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Global population of Black-faced Spoonbill continues to break new record
© Jay Kong/HKBWS Coordinated by EAAFP Partner, The Hong Kong Bird Watching Society (HKBWS), the International Black-faced Spoonbill Census 2023 was conducted from 6th to 8th January 2023. Global population of Black-faced Spoonbills (BFSs) reaches another record high of 6,603, a rise of 7.2% (i.e. 441 individuals) from last year. However, 299 individuals were recorded in the Deep Bay area across Hong Kong and Shenzhen, which is 70 individuals less compared to last year. The number shows a decline of 11% and 19% from 2021 and 2022 respectively. Steady growth in Taiwan, Mainland China and Korea while moderate decline in Japan and almost 20% drop in Deep Bay The census covered about 130 sites all over the world. Taiwan, Mainland China and the Republic of Korea are the major regions which attribute to the growth in the overall population. Taiwan remains the largest congregation site with 4,228 individuals comprising 64% of the global population. The year-on-year growth is 10.6%. In Mainland China, 1,307 individuals and 15.1% year-on-year growth were recorded. The number comprised 20% of the global population. In Ro Korea, the number of BFS reaches 54 individuals with an increase of 45.9%, i.e. 17 individuals. Contrarily, in Japan 610 individuals are recorded which shows a decline of 10.7% from last year, i.e. 73 individuals less. The results this year shows that the global population of Black-faced Spoonbills has increased steadily. The numbers in Taiwan and Mainland China have been setting new records in recent years, which suggests the conditions in those habitats are favourable for a larger number of Black-faced Spoonbills to stay or to gather. Favourable conditions may refer to a safe environment, and sufficient food sources in nearby feeding grounds. The decline in Japan might be related to the loss of stopover sites and the outbreak of bird flu, according to local experts. In Deep Bay area, 299 individuals were recorded, which is the second lowest record in the last decade. Compared to last year, there were 70 individuals les, that is 19% decline. Having reached its record high of 462 individual in 2010, the number of BFS in Deep Bay has not advanced since then and remained above 300 from 2016 until it dropped to 299 this year. The result this year is worrying. Fig. 1 Black-faced Spoonbill Census results 1989-2023 © HKBWS Fig. 2 Black-faced Spoonbill Population size and distribution © HKBWS Fig. 3 Black-faced Spoonbill Census results regional breakdown 1989-2023 © HKBWS The problem of habitat degradation must be confronted, and conservation should be prioritized in the Northern Metropolis Development Strategy The decline in the number of Black-faced spoonbills in Deep Bay area is alarming to Hong Kong. Black-faced Spoonbills mainly forage in the intertidal mudflats of Deep Bay, shallow waters in Gei Wai, and drained fishponds. As the Ramsar Wetland in Mai Po Inner Deep Bay is relatively adequately protected by law, these habitats can be maintained in relatively good conditions. However, the habitats outside the nature reserve are facing different threats. Without immediate measures, they may become unsuitable for Black-faced Spoonbills to loaf and feed. For instance, the expansion of mangroves, including the invasive species Sonneratia caseolaris, continues to eat up the mudflats resulting in a reduction in the habitat available to Black-faced Spoonbills. On the other hand, nearly 30% of the fishpond wetlands and the buffer zones in Deep Bay are hoarded by real estate developers or held privately. These lands have been abandoned or the land use has been altered, which continuously causes habitat degradation in the Deep Bay area. If proactive conservation and management actions are not taken immediately, there is a risk for losing these important winter habitats of the Black-faced Spoonbills’. In order to protect the Black-faced Spoonbill, many countries and cities put great effort into different conservation actions in the past 30 years, and finally the decline of the species is successfully reversed. "It is especially important to establish comprehensive protection laws, long-term conservation strategies and good land use planning, which can restore endangered species and even biodiversity around the world." Mr. Yu Yat-tung, Director of The Hong Kong Bird Watching Society, continued, "The future of the Deep Bay wetlands is determined by the conservation and planning of the Northern Metropolis Development Strategy. To protect the ecological integrity of this internationally important wetland, the Northern Metropolis must comply with the guidelines to protect "Wetland Conservation Area" and "Wetland Buffer Area". The wetland conservation park system must fully cover the "Inner Deep Bay and Shenzhen River catchment area" Important Bird Area recognized by BirdLife International, and ensure them to be protected by stricter laws and regulations; also a management model that is people and ecology oriented must be applied.” Hong Kong is responsible for the proper protection of wetlands and biodiversity, the maintenance of the important ecological corridors for migratory birds, and the assistance to China in fulfilling its obligations under the “Convention on Biological Diversity” and the “Convention on Wetlands”. The Hong Kong Bird Watching Society hopes that the Northern Metropolis can practice "ecological priority", through proper management and conservation of the Deep Bay wetlands, turn crisis into opportunity, and maximize the benefits of bird conservation. Fig. 4 Trend of Black-faced Spoonbill population in Deep Bay © HKBWS About The International Black-faced Spoonbill Census Black-faced Spoonbill is listed as "Endangered" on the International Union for Conservation of Nature's (IUCN) Red List of Threatened Species. The International Black-faced Spoonbill Census takes place every January ever since it was first launched in 1994. During Census 2023, more than 200 veteran birdwatchers, conservationists, researchers and ornithologists were mobilized to record the number of wintering Black-faced Spoonbills at about 130 sites. Reposting of news article from Hong Kong Bird Watching Society with permission, original article (link). Learn about EAAFP Black-faced Spoonbill Working Group: https://www.eaaflyway.net/black-faced-spoonbill-working-group/
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Watch the award-winning movie
to help conserve wetlands! EAAFP Foundation is pleased to invite you to the special screening of <Sura: A love Song > at CGV Incheon Yeonsu on 15 April at 10:30 am. <Sura> is a documentary about the Sura Tidal Flat, which is the last remaining tidal flat in the Saemangeum reclamation area in Ro Korea. Over the period of 30 years, area of tidal flats same as the size of two-thirds of Seoul, have been destroyed to make new dry land in Saemanguem, many migratory waterbirds, including Critically Endangered Spoon-billed Sandpiper, disappeared from the site Sura Tidal Flat could be reclaimed at any time to build a new military airport, but globally endangered and protected species still call it home. The movie is telling the story of a citizen who loves the birds and devoted to protect the last piece of wetland Sura. In this special screening hosted by EAAFP Foundation and BFS Eco-Center, you will see the life of the migratory waterbirds and other organisms in the Sura Tidal Flat besieged by the constant threat of reclamation and the people who are fighting for the restoration of the tidal flat. The screening will then be followed by a dialogue with the film director and a youth monitoring member and an optional, first-come, first-served, Black-faced Spoonbill (IUCN status: Endangered) birdwatching program at Namdong Reservoir in Incheon. English subtitles and interpretation will be provided. *Pre-registration is required. Synopsis: In the tidal flats dried up by reclamation projects, Dong-pil, a citizen scientist, records the remaining birds in photographs. He cannot forget the enchanting group dance of shorebirds that he saw a long time ago. Filmmaker Yun hears Dong-pil’s story and feels his fascination conveyed to her. She resumes making a documentary, which she gave up on in the past. Date: 15 April, 2023 (Sat) 10:30 am Venue: CGV Incheon Yeonsu Hall 3 Organizers: EAAFP Foundation, <Sura> producers, BFS Eco-Center Registration: Scan the QR code or follow the link [https://forms.gle/gMtJpVAxUaeQxoFy5] Registration Deadline: 14 April 2023 Entry fee: KRW 24,000 (*Part of the fee will be donated for the conservation of migratory waterbirds and their habitats and for making the small gifts for the participants) Souvenirs for the participants Program Contact: EAAFP Foundation (foundation@eaaflyway.net | 032-458-6507) [Korean version] [관객이 만드는 특별시사회: 당신의 수라는 무엇입니까?]에 초대합니다 (인천연수 CGV, 4/15) 간척으로 말라버린 갯벌에서, 시민과학자 동필은 남아있는 새들을 사진으로 기록한다. 그는 오래전 보았던 도요새의 군무를 잊지 못하고 그리워한다. 영화감독 윤은 동필의 이야기를 듣고 매혹이 전이되는 것을 느낀다. 그녀는 과거에 포기했던 영화를 다시 만들기 시작한다. 인간과 동물의 공생을 모색하고 환경 생태 운동에 지속적인 관심을 두어온 황윤 감독이 운명처럼 ‘새만금의 도시’ 군산으로 이사를 갔다. 십수 년 전 새만금척사업으로 갯벌에 관한 영화를 찍다가 덮었던 그였다. <수라>는 20여년간 활동을 이어온 새만금시민생태조사단과 걸음을 같이하며 갯벌의 아름다움을 재발견하는 과정을 담았다. 여기에는 내셔널지오그래픽 영상을 능가하는 미려한 이미지들로 가득하다. 감독은 카메라 뒤가 아니라 프레임 안에서 그걸 지켜본다. 친밀하고 진솔한 1인칭 보이스오버를 따라 수라 갯벌의 작고 아름다운 생명체들을 보는 일은 분명 경이로운 경험이지만, 영화는 남아있는 것들에서 어떤 시급함, 절박함도 보길 요청한다. 마지막 씬의 장관, ‘도요새의 군무’가 잊기 힘든 이유이기도 하다. 출처: 네이버 영화 줄거리 -------------------------------------------------------------------------------------------------------------------------- 재단법인 EAAFP, 영화<수라> 제작진, 저어새 생태학습관이 함께 주최하는 <수라> 특별시사회가 4월 15일 인천연수 CGV에서 열린다. 시사회는 영화관람 후 관객과의 대화와 별도의 사전신청이 필요한 저어새 탐조 프로그램으로 진행될 예정이다. 영문자막과 통역이 제공되므로 누구나 참여 및 연사들과 소통할 수 있다. <수라> 특별시사회는 사전신청자에 한해 참여가능하다. 사전신청을 마친 신청자에게 신청 확정 이메일이 발송되며, 4월 14일까지 신청 가능하다. 일시: 2023년 4월 15일(토) 오전 10:30 주최: 영화<수라>제작진, 재단법인EAAFP, 저어새생태학습관 장소: 인천연수CGV 3관 참가비: 24,000원/ 만18세미만 18,000원 (*참가비 일부는 기념품 증정 및 이동성 물새와 서식지 보전을 위해 재단법인EAAFP에 기부됩니다./ 참가비 전액 기부금 영수증 발행) 등록: QR코드 스캔 또는 아래 신청하기 버튼 클릭 후 구글 폼 제출(~4/14) 프로그램: 영화관람, 관객과의 대화, 조류생태환경프로그램 (영문자막 및 통역 제공) 문의: 재단법인EAAFP (foundation@eaaflyway.net | 032) 458-6507) 재단법인EAAFP 정기기부자들께는 좌석 우선선택권과 조류생태환경프로그램 등록 우선권의 혜택이 주어집니다. 신청하기 영문포스터 보기 예고편 보기 감독인사말 보기
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Juvenile distribution pattern and conservation of the endangered Black-faced Spoonbill
EAAFP Small Grant Fund Project by Chi Yeung Choi, Jimmy Duke Kunshan University The individually-marked Black-faced Spoonbill ‘Y75’, was one of the twenty individuals tagged with satellite tracker. Y75 was ringed on Chilsando, Korea, 2nd July 2020, then seen on Taiwan Island 26th October 2020 ©Yi-Cheng Chen Among the threatened migratory waterbird species in the East Asian–Australasian Flyway (EAAF), the Black-faced Spoonbills (BFS) Platalea minor stands out as one of the very few species showing a recovering trend, from just a few hundred to more than 6,000 over the last 30 years partly due to the extensive conservation effort and BFSs’ ability to utilise artificial wetlands. Over the years, the foraging ecology (Yu et al. 2004a), habitat use (Yu et al. 2004b), threats (Sung et al. 2018) and migration routes (Wood et al. 2013) of BFS have been studied in various locations. Yet relatively little is known about their movement ecology, especially juveniles. In this proposed project, we aim to quantify the wintering distribution pattern of juvenile BFS in their first boreal winter using GPS-GSM transmitters. The ultimate goal is to identify the key regions where juvenile BFS winter and safeguard these areas for the continuous recovery of this endangered population. In 2020 June and July, juvenile BFS were captured near their nests from breeding islands along the west coast of South Korea. Measurements were recorded and unique colour ring combination on the tibia of BFS was used for individual marking. Solar-powered GPS/GSM satellite trackers (19g or 1.3% of juvenile BFS body weight) were deployed to the back of spoonbills using backpack method. Twenty juvenile BFS were captured and equipped with satellite trackers on their back during June and July 2020. Five individuals died without leaving Korea while one individual with tracker failure. In the remaining 14 individuals that left Korea and migrated, 10 of them (71.4%) spent their first winter in mainland China, two (14.3%) on Taiwan Island and two (14.3%) in southeast Japan. Among the 10 individuals that spent their first winter in mainland China, three individuals (30%) stayed in Jiangsu province and another three individuals (30%) in Zhejiang province, while two individuals (20%) resided in Guangdong, one individual in Hainan and one in Anhui. About half of these 14 wintering sites were protected. Among the 14 individuals that left Korea, the one that spent its first winter at the highest latitude (Jiangsu Lianyungang) and the one at the lowest latitude (Hainan) eventually died during their first winter. Our results showed the importance of the coastal wetlands in mainland China, especially those along the Jiangsu, Shanghai and Zhejiang coasts, for juvenile BFS during their southward migration and first winter. All tracked individuals that flew across the Yellow Sea from the west coast of Korea made their first landfall in coastal wetlands along the Jiangsu, Shanghai and Zhejiang coasts. The tracking results indicated the importance of coastal wetlands in Zhejiang Zhoushan, Hangzhou Bay and Wenzhou Bay to juvenile BFS. Moreover, two of the tracked birds that migrated successfully to mainland China for their first winter, eventually died at Lianyungang and Hainan. The cause of mortality was unclear but 35% of tracked BFS died within 6 months after released, showing the challenges that young BFS faced in their early years. It is important to record the potential cause of mortality and mitigate those threats to ensure the continuous population recovery of this endangered species. This project laid the important foundation for further tracking projects that will help researchers to determine the potential drivers for the observed juvenile wintering distribution pattern. This could be achieved by combining the tracking data with findings with annual synchronized censuses. Moreover, the tracking data could also be used to evaluate the extent to which protected areas along the flyway encompass the full range of habitats used by BFS during non-breeding season. The southward migration pathway and wintering distribution of satellite-tracked Black-faced Spoonbills in 2020 References: Sung Y-H, Tse IW-L, & Yu Y-T. 2018. Population trends of the Black-faced Spoonbill Platalea minor: analysis of data from international synchronised censuses. Bird Conservation International, 28(1), 157-167. Wood, C., Tomida, H., Jin-Han, K., Lee, K.S., Cho, H.J., Nishida, S., Ibrahim, J., Hur, W.H., Kim, Yu YT, & Swennen C. 2004a. Feeding of wintering Black-faced Spoonbills in Hong Kong: When and how long? Waterbirds, 27(2), 135-140. Yu YT, & Swennen C. 2004b. Habitat use of the Black-faced Spoonbill. Waterbirds, 27(2), 129-134. The project was funded through the 2020 EAAFP WG/TF Small Grant Fund. View the report, Click here.
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Conservation of Spoon-billed Sandpiper in the Gulf of Mottama and Tanintharyi Coastal of Myanmar
EAAFP Small Grant Fund Project by Pyae Phyo Aung, Shane Thu Lwin and Thura Soe Min Htike Nature Conservation Society – Myanmar (NCS) LCG members are looking the spotting the scope and binocular during the bird watching training © Nature Conservation Society – Myanmar Participation of local communities in conservation is crucial for long-term conservation management. Two local Conservation Groups(LCGs) newly established in The Tanintharyi region are improved their conservation skills through five consecutive bird-watching training sessions. Two LCGs from the area of the Gulf of Mottama are also trained to elaborate their bird-watching, patrolling and conservation skills. Vinyl billboards were installed in the public areas of Myeik and Boke Pyin to raise the awareness of the conservation of migratory shorebirds during their wintering season. This year, 2021-2022 a total of nine national surveyors conducted an annual wintering census survey of Spoon-billed Sandpiper and migratory shorebirds at the Gulf of Mottama and Tanintharyi coastal accompanied by the LCGs members. For the Gulf of Mottama Ramsar site, the survey team covered upper Gulf located in east coastal where recorded 17 and estimated 80 critically endangered Spoon-billed Sandpiper (SBS), based on the SBS proportion in 173 flock counts of over 34,914 birds extrapolated to an estimated 160,000 birds of small waders in the area. These birds were encountered by the team at low tide feeding and widespread across the vast mudflat habitats. Former hunters of the Local Conservation Groups (LCGs) joined the survey and guided the survey team onto the small wader flocks. They were trained and informed about the survey techniques, biology and significance of the species in a regional, national and global context. Providing binoculars to LCG team © Nature Conservation Society – Myanmar Survey team members with LCG at the Gulf of Mottama © Nature Conservation Society – Myanmar Three sites located at the North of Myeik mudflat, recorded ten globally threatened species such as Nordmann’s Green Shank, Great Knot, Chinese Egret, Black-headed Ibis, Bar-tailed Godwit, Black-tailed Godwit, Eurasian Curlew, Curlew Sandpiper, Red-necked/Little Stint and Red-breasted Parakeet. Three sites located at the Bokepyin mudflat, recorded twelve globally threatened species such as single Spoon-billed Sandpiper, Black-tailed Godwit, Bar-tailed Godwit, Eurasian Curlew, Nordmann’s Greenshank. During the project implementation period, NCS keep communicating with the existing LCG members in the Gulf of Mottama for the conservation actions and formation the new LCG team at Tanintharyi coastal region. Tanintharyi costal region is also important for migratory water birds and needs to be conserved as a legal flyway network site or Ramsar Site. Moreover, the NCS team is coordinating with Tanintharyi region Forest Department for the Spoon-billed Sandpiper conservation activities and introducing Tanintharyi coastal as a new flyway network site. Discussion between NCS and Officers from Forest Department for shorebird conservation, Tanintharyi Region via Zoom on 30 November 2021© Nature Conservation Society – Myanmar The project was funded through the 2021 EAAFP WG/TF Small Grant Fund. View the report, Click here.
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Over 150 delegates meet in Brisbane, Australia to discuss the conservation of migratory waterbirds
The East-Australasian Asian Flyway Partnership (EAAFP), a partnership of governments, NGOs, and experts working to conserve migratory waterbirds and their habitats, is pleased to announce the upcoming 11th Meeting of Partners (MOP11) in Brisbane, Australia, from 12th to 17th March, 2023. The global migratory waterbird population is experiencing declines of up to 80% over the last 30 years, with the East Asian-Australasian Flyway (EAAF), which stretches from the Russia Far East and Alaska to Australia and New Zealand in the south, having the highest proportion of globally threatened species among all flyways. The destruction and degradation of wetlands along the Flyway impact the waterbirds’ survival. The MOP11 is co-hosted by the Department of Climate Change, Energy, the Environment and Water of the Australian Government and BirdLife Australia, and sponsored by the Australasian Wader Study Group and Faunatech. The theme of the MOP is “We are all part of the East-Asian Australasian Flyway!” and brings together over 150 partners and collaborators from across the 18 range countries and beyond to discuss the latest developments in migratory waterbird conservation. Established in 2006, the EAAFP aims to conserve migratory waterbirds, their habitats and the livelihood of local people depending on them along the East Asian-Australasian Flyway (EAAF). The Partnership includes government bodies, inter-governmental organizations, INGOs, international organizations, corporations, scientific experts, site managers, and local communities. The importance of protecting migratory waterbirds and wetlands The East Asian-Australasian Flyway is home to over 50 million migratory waterbirds of more than 210 species, using various types of wetland habitats to breed, rest and forage. Many of them, such as Bar-tailed Godwit, and Far Eastern Curlew, fly over thousands of kilometres for migration twice every year. Globally, wetlands are being cleared and damaged, and their water is diverted and drained for agriculture or aquaculture, and to make way for development. They are also threatened by the growing impact of climate change, like increasing droughts and fires, as well as growing pressures from overgrazing and invasive species, and more recently diseases like Avian Influenza. 11th Meeting of Partners encourages synergies to take conservation actions This upcoming meeting is the first since the establishment of the EAAFP Strategic Plan 2019 – 2028. It will be an opportunity to understand how the Partners are aligning our actions to the strategic plan, and allow participants to share knowledge and experiences, discuss new and ongoing initiatives, and plan for future conservation efforts. The week-long meeting will feature discussions of key issues raised by Partners, and interactive side events covering regional collaboration, allowing partners to exchange ideas and build strong networks to support the partnership's work. In addition, MOP11 will include a field trip to the Moreton Bay wetland, a Flyway Network Site of the EAAFP, and critical for migratory birds like the endangered Far Eastern Curlew. About MOP11, click here. Far Eastern Curlew © Maria Coleman
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Activities of the EAAFP Secretariat for Hwaseong Wetlands Conservation Projects 2020-2022
The scenery of the Hwaseong Wetlands Flyway Network Site © EAAFP Secretariat In November 2018, Hwaseong Wetlands was nominated as the East Asian-Australasian Flyway Network Site (FNS) as its importance as a habitat for migratory waterbirds has been acknowledged. With its designation, Hwaseong City and the EAAFP Secretariat signed an MOU [article] and proceeded with the project called “Collaboration for Conservation of the Hwaseong Wetlands” for three consecutive years, from 2020 to 2022. This article demonstrates the project activities that were carried out in chronological order. <2020> The Project was carried out in six major activities. EAAFP, Birds Korea, Federation for Environmental Movements of Hwaseong (KFEM Hwaseong), Korea Federation for Environmental Movements (KFEM), and Hwaseong City together prepared for the event from June, proceeding with the international symposium online in December 2020. About 300 concurrent users with 2400 views participated and discussed the management of Hwaseong Wetlands together with citizens, farmers, fishermen, the Rural Community Corporation, the Ministry of Oceans and Fisheries, the Ministry of Environment, researchers, international organizations, and overseas experts. Article: Link Follow-up Actions to the Symposium: Production of Guidelines for Hwaseong Wetland Management Plan and Workshops. Based on discussions on the management of Hwaseong Wetlands at the symposium in December 2020, the EAAFP Secretariat presented guidelines for Hwaseong Wetland Management Plan after two workshops and one advisory meeting in February and March 2021. Hwaseong City, Hwaseong Eco Foundation, and the Symposium Task Force team (the EAAFP Secretariat, KFEM, KFEM Hwaseong, and Birds Korea) participated in the workshop to reach an agreement on the direction of Hwaseong Wetland management in 2021 and beyond. The title of the guideline is ‘The Proposal for the Management Directions for the Sustainable use of the Hwaseong Wetlands’ and was referred to domestic and international wetland management plans and management guidelines. This suggestion presents the scope of management, direction of wetland management, partnership establishment, and setting of goals and implementations. It also proposes to form a consultative body when establishing a partnership, to have an implementation organization accordingly, and to entrust it to civic groups, which has not been attempted in Korea. The authors of the guidelines are Ms. Yeonah Ku (EAAFP Secretariat), (KFEM Hwaseong), and Ms. Hyeseon Do (EAAFP Secretariat), members of the Symposium TF. The external manuscript of Han Donguk, the Director of the PGA Wetland Ecology Research Institute, was also included. Article: Link Hwaseong Wetlands Conservation Resident Project The resident project organized by HEFM initially considered the formation of a symposium preparatory committee, but because of the rising number of COVID-19 cases, it was more carried out as an awareness-raising-oriented activity. From July 2020 to March 2021, six meetings, seven campaigns, eight club activities, two discussions, three lectures, five civic ecological research group activities, and one ecological exploration activity were held. Article: Link International Cooperation Project for the Conservation of Far Eastern Curlew The EAAFP Secretariat discussed with EAAFP Far Eastern Curlew Task Force and decided to support the “Far Eastern Curlew Conservation Project in Sumatra Island” and funded the EKSAI Foundation in Indonesia. Through this research, a full investigation of Far Eastern Curlew and waterbirds in northern Sumatra including Sembilang National Park (South Sumatra Province), Pantai Cemara (Jambi Province) and Bagan Serdang (North Sumatra Province) was made, and training was conducted to local guards. Moreover, a report that compares and analyzes with waterbirds data has been written, which is uploaded on the EAAFP website. Article: Link Waterbird-oriented Ecological Survey and Far Eastern Curlew Network Construction Project Organized by Birds Korea and KFEM, ecological surveys at the Hwaseong Wetlands were carried out from June 2020 to March 2021. Through the survey, migration behavior and habitat of migratory waterbirds and their juvenile were identified. Based on the findings, guideline directions were proposed, and the Far Eastern Curlew Network was formed in December 2020. Among the findings, a report written in 2020 is uploaded on the EAAFP website. Related article 1: “Flyway: connecting people and migratory waterbirds” story series #6– Interview with Dr. Nial Moores Related article 2: The Hwaseong Wetlands Project Related article 3: The Launch of Far Eastern Curlew Network of the Korean Peninsula Promotional and Educational Materials Production Project The EAAFP Secretariat produced key species factsheets for public-raise awareness purposes in the East-Asian Australasian Flyway. The nine species were produced in both Korean and English. Article: Link Moreover, EAAFP Secretariat operated Hwaseong Wetlands FNS Facebook from July 2020 and is promoting Hwaseong Wetlands conservation activities. Article: Link Furthermore, prizes for the Hwaseong Wetland Promotion Contest winner were delivered. [Prize-winner] <2021> The Project was carried out in four major activities. International Cooperation Project for the Conservation of Far Eastern Curlew Following the previous activity of the Far Eastern Curlew surveys in Sumatra in Indonesia, the EKSAI Foundation took another series of surveys as well as training local communities in Sumatra. See the results and the reports in the separate article: Link Local Cooperation Project: Far Eastern Curlew Network in the Korean Peninsula Following the suggestion from the EAAFP Secretariat and Birds Korea in 2020 based on the ecological survey in the Hwaseong Wetlands Flyway Network Site (FNS) in 2020 and existing data from the National Institute of Biological Resources (NIBR), three local governments in ROK, Hwaseong City, Seocheon County, Yeonsu District of Incheon City, initiated the Far Eastern Curlew Network in the Korean Peninsula since 1st December 2020. As a secretariat of the network, Hwaseong City supported the Far Eastern Curlew survey held in July 2021, following the advice of Birds Korea and the EAAFP Secretariat. From July 21st to 25th 2021, 26 survey participants counted Far Eastern Curlews and other species at 34 sites in three areas: parts of coastal Incheon (Ganghwa Island, Yeongjong Island and Songdo, the Han Estuary); the adjacent Gyeonggi Coast (the Hwaseong Wetlands and Asan Bay); and the Geum Estuary (Figure 1). Participants are experienced counters with specialist knowledge of their areas. A total of 9,642 Far Eastern Curlews were recorded with 3,746 in Incheon; 3,255 in parts of Gyeonggi mainland coast; and 2,641 in Geum Estuary. This is around a third of the world’s population of the species, which was estimated to be 32,000 individuals (range: 20,000 – 49,000 individuals, source: https://www.iucnredlist.org/) Article: Link Local Residents Support Project: Citizen Ecological Survey, Marine Waste Cleaning, Civic Forum, and Walking Event To promote the importance of the Hwaseong Wetlands and to conserve wetlands in the hands of the local people, the EAAFP Secretariat and the Korean Federation of Environmental Movement–Hwaseong (KFEM Hwaseong) implemented the Local Residents Project for Conservation of the Hwaseong Wetlands from April to December 2021. Through the Project a citizen-based ecological survey group was formed, and ecological surveys and on-site monitoring activities were conducted with the guide led by experts in waterbirds, large benthos, wild animals, and amphibians. The Youth at Durae Natural High School near the Hwaseong Wetlands and instructors working in the region formed a small group (Dingo Club) together and conducted 5 times of indoor and field education activities regarding the Hwseong Wetlands. The students participated in the “Hwaseong Youth Policy Proposal Contest” and proposed policies for establishing the “Hwaseong Wetland Education Center” and won the Excellence Award. A local birdwatching and marine waste cleaning events were also held for the local citizens, providing sufficient education regarding marine waste problems and the importance of waterbirds. Furthermore, A civic forum was held with wetland NGOs, experts, and residents, titled ‘Benefits of the Hwaseong Wetlands, Shared with Together.’ Through the Forum, it was an opportunity to resolve conflicts over wetland development & conservation, seek new directions for reclaimed land in the Hwaseong Wetlands, and emphasize the importance of the Hwaseong Wetlands in and outside Hwaseong City. Lastly, Hwaseong Wetland Citizens’ Walking Event: Life and Peace Road was organized in solidarity with 17 civil society organizations in Suwon and Hwaseong Cities. Walking along the 5km section of the Hwaseong seawall, citizens toured the Hwaseong Wetlands, where numerous lives are alive and breathing, and shared the meaning of peace by listening to the story of the village suffering from 54 years of combat airfield at Maehyang-ri History Hall. Article: Link 2021 International Symposium for the Hwaseong Wetlands – “All Connected through the Hwaseong Wetlands: One World, One Future” On 26th November, the 2021 International Symposium for the Hwaseong Wetlands hosted by Hwaseong City took place at Purmir Hotel, Hwaseong City. Hwaseong Eco Foundation, EAAFP Secretariat, Birds Korea, and Korea Federation for Environmental Movements (KFEM) of Hwaseong co-organized the event, with support from the Ministry of Environment Ministry of Oceans and Fisheries, Cultural Heritage Administration of the Republic of Korea, and Hanns Seidel Foundation Korea. Based on the ideas drawn from the forum, the speakers raised the management and restoration plan on Tidal Flats in ROK with a policy proposal and discussed how to join force for the UNESCO World Natural Heritage Site Phase II. In addition, international experts presented the importance of designating the inland wetlands along the Hwaseong Lake as a Wetland Protected Area and the future management guidelines of the Hwaseong Wetlands with moderation by, Ms. Choony Kim, Secretary General of KFEM. During the panel discussion, the panelists emphasized the importance of designating the inland wetlands along the Hwaseong Lake as a Wetland Protected Area and the future management guideline of the Hwaseong Wetlands. Article: Link Symposium Video Links: Korean, English <2022> The Project was carried out in four major activities. International Cooperation Project for the Conservation of Far Eastern Curlew & domestic cooperation The afterwork has been conducted for the Far Eastern Curlew Conservation Project in Sumatra, Indonesia from January and February. The report document was revised according to the updated information provided by the EKSAI Foundation, the leading organization of the Fare Eastern Curlew Conservation Project in Sumatra. FEC Survey has been conducted in the Philippines from October to December 2022. The surveys were conducted in Bulacan, Malolos City, Pamarawan; National Capital region, Navotas City, Tansa; Cebu, Mandaue City; Negros Island, Negros Occidental; Iloilo City, Iloilo Province; Masbate State, Bicol Region; Oriental Mindoro; and La Union. With this survey there was an opportunity to introduce potentially important habitats for FEC in the Philippines and share survey data. It was reported that further support is required for the continuous implementation of the survey. In the other hand, the Secretariat supported the Hwaeong Eco Foundation and Hwaseong City by holding several meetings/ participating in several education trainings as a domestic cooperation activity. Hwaseong Wetlands Visioning Project In consultation with Wildfowl and Wetlands Trust (WWT) Based in UK, Hwaseong City and the EAAFP Secretariat have discussed the need for developing a visioning plan for the wise use of the Hwaseong Wetlands, which could positively support both wildlife and local residents that rely on the wetland areas. From January 2022, virtual meetings between WWT and the EAAFP Secretariat were held to discuss WWT’s site visit and the organization of stakeholder meeting to receive comprehensive data on the Hwaseong Wetlands for the development of the visioning report. The WWT’s visit (4 days) to the Hwaseong wetlands were proceeded in May, accessed relevant information of the site and two local stakeholder meetings were organized to gather perceptions and advice to reflect on the visioning report. Furthermore, the EAAFP Secretariat provided supplementary data to support the drafting of the visioning report. The final drafts were made in early 2023. Article: Link Local Residents Support Project: Citizen Ecological Survey Training Following theory-based training provided by experts in March 2022, a citizen-based ecological survey group was formed, and ecological surveys and on-site monthly monitoring activities were conducted with the guide led by experts in waterbirds, large benthos, halophytes, wild animals, and amphibians, from March to November 2022. The Citizen Ecological Survey Workshop was held on 27~28 November 2022 to share the survey activities and discuss strengths, weaknesses, and future improvements for the project. Article: Link Prepared by Ms. Yeonah Ku (Local Project Coordinator) & Mr. Yong June Kim (Programme Assistant) from EAAFP Secretariat
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International Workshop on Geese Conservation and Management in East Asia
Group photo © Katsumi Ushiyama/Japanese Committee of the Anatidae Working Group On 27 – 29th January, 2023, the Japanese Committee of Science and Technology of the Anatidae Working Group hosted the “International Workshop on Geese Conservation and Management in East Asia” with the support of The Miyagi Prefectural Izunuma-Uchinuma Environmental Foundation. The three-day workshop included experts’ meeting, an open symposium and an excursion. Dr. David Ward of USGS Alaska, Dr. Hansoo Lee of KoEco, Dr. Cao Lei of Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, were invited as international experts. The experts’ meeting started with an information-sharing session on the situation of geese conservation and management of each country, particularly on responsible organizations, protective status, population trends, monitoring and research. Nextly, Yusuke Sawa of Yamashina Institute of Ornithology reported the progress of the Brent geese action plan and recent tracking studies performed in Japan. The meeting was concluded with a fruitful discussion on finding research gaps, management framework and future actions for advancing geese conservation and management in East Asia. The symposium, live streamed and archived in YouTube , started with a plenary lecture from Dr. David Ward titled “Population Trends and Conservation of Geese in the Eastern Pacific Flyway” with recommendations for evidence-based conservation and management in the East Asian region. In the following session on “Geese of Japan”, Mr. Masayuki Kurechi of Japanese Association for Wild Geese Protection reported the achievements on the recovering cackling geese and snow geese, Dr. Tetsuo Shimada of The Miyagi Prefectural Izunuma-Uchinuma Environmental Foundation reported the issues concerning the abundant greater white-fronted goose, and Mr. Yusuke Sawa reported the recent progress of the geese tracking project in Japan. The next session was on “Geese in East Asia”, where Dr. Hansoo Lee introduced the outcomes of the nationwide water bird census and international cooperative research works for tracking migratory geese. Dr. Cao Lei introduced the status of 5 geese species in China, emphasizing the need to protect the Yangtze lakes, especially Poyang and Dongting Lake and their hydrological progress. © Katsumi Ushiyama/Japanese Committee of the Anatidae Working Group The symposium closed with a panel discussion building up on the conversation in the experts’ meeting. One of the main conclusion was to make a comprehensive international plan which can share goals, roles and principles for geese conservation and management in the East Asian region, as in the North American Waterfowl Management Plan. The major gaps to fill in for effective management were: 1) coordinated monitoring and analysis of population parameters, such as the survival rate based on banding survey and reproductive rate based on juvenile ratio monitoring 2) data sharing on tracking studies; 3) natural habitat conservation for declining specialist species, and 4) agricultural habitat management for increasing generalist species. To establish methods for evidence-based management of East Asian geese populations, the greater white-fronted goose was chosen as a model species for population modeling. The final day of the workshop was a field trip to three Ramsar sites, Izunuma, Kabukurinuma, Shizugawa-wan. The three-day workshop was funded by the Keidanren Nature Conservation Fund, Japan Fund for Global Environment, and Tsudo Fund of the Ornithological Society of Japan. Morning flight of geese in Izunuma © Katsumi Ushiyama/Japanese Committee of the Anatidae Working Group Rewatch the Symposium on Youtube: Prepared by Katsumi Ushiyama, Coordinator of Anatidae Working Group
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Literature list (Jul-Dec 2022)
1) Biology & Ecology Murray, N. J., T. A. Worthington, P. Bunting, S. Duce, V. Hagger, C. E. Lovelock, R. Lucas, M. I. Saunders, M. Sheaves, M. Spalding, N. J. Waltham, and M. B. Lyons. 2022. High-resolution mapping of losses and gains of Earth's tidal wetlands. Science 376:744-749. Kuang, F. L., W. Wu, D. V. Li, C. J. Hassell, G. Maglio, K. S. K. Leung, J. T. Coleman, C. Y. Cheng, P. S. Tomkovich, and Z. J. Ma. 2022. Detecting the non-breeding region and migration route of Whimbrels (Numenius phaeopus rogachevae) in the East Asian-Australasian Flyway. Avian Research 13. Lagasse, B. J., R. B. Lanctot, S. Brown, A. G. Dondua, S. Kendall, C. J. Latty, J. R. Liebezeit, E. Y. Loktionov, K. S. Maslovsky, A. I. Matsyna, E. L. Matsyna, R. L. McGuire, D. C. Payer, S. T. Saalfeld, J. C. Slaght, D. V. Solovyeva, P. S. Tomkovich, O. P. Valchuk, and M. B. Wunder. 2022. Migratory network reveals unique spatial-temporal migration dynamics of Dunlin subspecies along the East Asian-Australasian Flyway. PLoS ONE 17. Nicol, S., M. J. Cros, N. Peyrard, R. Sabbadin, R. Trepos, R. A. Fuller, and B. K. Woodworth. FlywayNet: A hidden semi-Markov model for inferring the structure of migratory bird networks from count data. Methods in Ecology and Evolution. Zhu, B. R., M. A. Verhoeven, N. Velasco, L. Sanchez-Aguilar, Z. W. Zhang, and T. Piersma. 2022. Current breeding distributions and predicted range shifts under climate change in two subspecies of Black-tailed Godwits in Asia. Global Change Biology 28:5416-5426. Joo, S., Y. S. Choi, and S. Y. Lee. 2022. Home Range and Habitat Use of the Swan Goose (Anser cygnoides 1758) during Wintering in the Seocheon Tidal Flat, South Korea, Using GPS-Based Telemetry. Animals 12. Du, F., S. Y. Wang, Z. Han, X. B. Liu, C. Liu, A. P. Huang, K. Q. Chen, S. L. Zhao, L. Wang, and Z. Jiang. 2022. Impact of hydrological processes on wetland landscapes and wintering migratory birds in a large floodplain lake (Poyang Lake, China). Ecohydrology 15. Jang, M., W. J. Shim, G. M. Han, S. Y. Ha, Y. Cho, M. Kim, and S. H. Hong. 2022. Spatial distribution and temporal trends of classical and emerging persistent organic pollutants (POPs) in black-tailed gull (Larus crassirostris) eggs from Korea. Science of the Total Environment 845. Hansen, B. D., D. I. Rogers, D. Watkins, D. R. Weller, R. S. Clemens, M. Newman, E. J. Woehler, T. Mundkur, and R. A. Fuller. 2022. Generating population estimates for migratory shorebird species in the world’s largest flyway. Ibis 164:735-749. 2) Conservation & management Shi, X., C. Hu, J. Soderholm, J. Chapman, H. F. Mao, K. Cui, Z. J. Ma, D. L. Wu, and R. A. Fuller. Prospects for monitoring bird migration along the East Asian-Australasian Flyway using weather radar. Remote Sensing in Ecology and Conservation. Duan, H. L., and X. B. Yu. 2022. Linking landscape characteristics to shorebird habitat quality changes in a key stopover site along the East Asian-Australasian Flyway migratory route. Ecological Indicators 144. Xu, H. F., B. Dong, X. Gao, Z. L. Xu, C. Q. Ren, L. Fang, Z. Z. Wei, X. Liu, and Z. P. Lu. Habitat quality assessment of wintering migratory birds in Poyang Lake National Nature Reserve based on InVEST model. Environmental Science and Pollution Research. Shumway, N., M. I. Saunders, S. Nicol, R. A. Fuller, N. Ben-Moshe, T. Iwamura, S. W. Kim, N. J. Murray, J. E. M. Watson, and M. Maron. 2022. Exploring the risks and benefits of flexibility in biodiversity offset location in a case study of migratory shorebirds. Conservation biology : the journal of the Society for Conservation Biology:e14031. La Sorte, F. A., M. F. J. Aronson, C. A. Lepczyk, and K. G. Horton. 2022. Assessing the combined threats of artificial light at night and air pollution for the world's nocturnally migrating birds. Global Ecology and Biogeography 31:912-924. Yang, Y. W., F. F. Sun, K. Liu, J. F. Chen, T. Zheng, and M. Z. Tang. 2022. Influence of heavy metals on Saunders's Gull (Saundersilarus saundersi) reproduction in the Yellow River Estuary: risk assessment and bioaccumulation. Environmental Science and Pollution Research 29:82379-82389. Mukherjee, A., S. Pal, P. Das, and S. K. Mukhopadhyay. 2022. Heavy metal exposure to a migratory waterfowl, Northern Pintail (Anas acuta), in two peri-urban wetlands. The Science of the total environment 851:158238. Yang, X. T., Z. Z. Duan, S. S. Li, C. X. Zhang, M. Qu, G. D. Hua, X. A. Niu, H. J. Hu, and D. M. Yu. 2022. Factors Driving the Abundance of Wintering Waterbirds in Coastal Areas of Guangdong Province, China. Frontiers in Ecology and Evolution 9. Moores, N., H. Jung, H.-J. Kim, B.-Y. Hwang, W.-H. Hur, and A. Borzée. 2022. The Hwaseong Wetlands Reclamation Area and Tidal Flats, Republic of Korea: A Case of Waterbird Conservation in the Yellow Sea. Conservation 2:526-549. 3) Avian Influenza /Others Yin, S. L., Y. J. Xu, M. S. Xu, M. C. M. de Jong, M. R. S. Huisman, A. Contina, H. H. T. Prins, Z. Y. X. Huang, and W. F. de Boer. 2022. Habitat loss exacerbates pathogen spread: An Agent-based model of avian influenza infection in migratory waterfowl. PLoS Computational Biology 18. Yao, Z. Z., H. B. Zheng, J. S. Xiong, L. P. Ma, R. Gui, G. L. Zhu, Y. Li, G. X. Yang, G. Chen, J. Zhang, and Q. J. Chen. Genetic and Pathogenic Characterization of Avian Influenza Virus in Migratory Birds between 2015 and 2019 in Central China. Microbiology Spectrum. 1) Biology & Ecology High-resolution mapping of losses and gains of Earth’s tidal wetlands Murray, Nicholas J.; Worthington, Thomas A.; Bunting, Pete; Duce, Stephanie; Hagger, Valerie; Lovelock, Catherine E.; Lucas, Richard; Saunders, Megan I.; Sheaves, Marcus; Spalding, Mark; Waltham, Nathan J.; Lyons, Mitchell B. Abstract: Tidal wetlands are expected to respond dynamically to global environmental change, but the extent to which wetland losses have been offset by gains remains poorly understood. We developed a global analysis of satellite data to simultaneously monitor change in three highly interconnected intertidal ecosystem types—tidal flats, tidal marshes, and mangroves—from 1999 to 2019. Globally, 13,700 square kilometers of tidal wetlands have been lost, but these have been substantially offset by gains of 9700 km2, leading to a net change of −4000 km2 over two decades. We found that 27% of these losses and gains were associated with direct human activities such as conversion to agriculture and restoration of lost wetlands. All other changes were attributed to indirect drivers, including the effects of coastal processes and climate change. Detecting the non-breeding region and migration route of Whimbrels (Numenius phaeopus rogachevae) in the East Asian-Australasian Flyway Fenliang Kuang, Wei Wu, David Li, Chris J. Hassell, Grace Maglio, Kar-Sin K. Leung, Jonathan T. Coleman, Chuyu Cheng, Pavel S. Tomkovich, Zhijun Ma Abstract: Determining the migration routes and connections of migratory birds at the population level helps clarify intraspecific differences in migration. Five subspecies have been recognized in the Whimbrel (Numenius phaeopus) in Eurasia. Ssp. rogachevae is the most recently described subspecies. It breeds in Central Siberia, while its non-breeding region and migration routes are still unclear. We tracked the migration of Eurasian Whimbrels captured at three non-breeding sites (Moreton Bay in east coast of Australia, Roebuck Bay in Northwest Australia and Sungei Buloh Wetland in Singapore) and two migration stopover sites (Chongming Dongtan and Mai Po Wetland in China). We determined the breeding sites and inferred the subspecies of the tagged birds in the East Asian - Australasian Flyway (EAAF) based on the known breeding distribution of each subspecies. Of the 30 tagged birds, 6 and 21 birds bred in the breeding range of ssp. rogachevae and variegates, respectively; one bred in the presumed transition area between the breeding range of ssp. phaeopus and rogachevae, and two bred in the region between the breeding range of ssp. rogachevae and variegates. The birds that bred in the ssp. rogachevae breeding range spent their non-breeding season in the northern Sumatra, Singapore, East Java and Northwest Australia and mainly stopped over along China's coasts during migration. None of our birds bred in the exclusive breeding range of the phaeopus subspecies. Previous studies have predicted that rogachevae whimbrels migrate along the Central Asian Flyway and spend the non-breeding season in West India and East Africa. We found that at least some rogachevae whimbrels migrate along the EAAF and spend the non-breeding season in Southeast Asia and Australia. The ssp. phaeopus is at best sparsely distributed in the EAAF in the west region, or possibly does not occur at all. Migratory network reveals unique spatial-temporal migration dynamics of Dunlin subspecies along the East Asian-Australasian Flyway Benjamin J. Lagasse, Richard B. Lanctot, Stephen Brown, Alexei G. Dondua, Steve Kendall, Christopher J. Latty, Joseph R. Liebezeit, Egor Y. Loktionov, Konstantin S. Maslovsky, Alexander I. Matsyna, Ekaterina L. Matsyna, Rebecca L. McGuire10, David C. Payer, Sarah T. Saalfeld, Jonathan C. Slaght, Diana V. Solovyeva, Pavel S. Tomkovich, Olga P. Valchuk, Michael B. Wunder Abstract: Determining the dynamics of where and when individuals occur is necessary to understand population declines and identify critical areas for populations of conservation concern. However, there are few examples where a spatially and temporally explicit model has been used to evaluate the migratory dynamics of a bird population across its entire annual cycle. We used geolocator-derived migration tracks of 84 Dunlin (Calidris alpina) on the East Asian Australasian Flyway (EAAF) to construct a migratory network describing annual subspecies-specific migration patterns in space and time. We found that Dunlin subspecies exhibited unique patterns of spatial and temporal flyway use. Spatially, C. a. arcticola predominated in regions along the eastern edge of the flyway (e.g., western Alaska and central Japan), whereas C. a. sakhalina predominated in regions along the western edge of the flyway (e.g., N China and inland China). No individual Dunlin that wintered in Japan also wintered in the Yellow Sea, China seas, or inland China, and vice-versa. However, similar proportions of the 4 subspecies used many of the same regions at the center of the flyway (e.g., N Sakhalin Island and the Yellow Sea). Temporally, Dunlin subspecies staggered their south migrations and exhibited little temporal overlap among subspecies within shared migration regions. In contrast, Dunlin subspecies migrated simultaneously during north migration. South migration was also characterized by individuals stopping more often and for more days than during north migration. Taken together, these spatial-temporal migration dynamics indicate Dunlin subspecies may be differentially affected by regional habitat change and population declines according to where and when they occur. We suggest that the migration dynamics presented here are useful for guiding on-the-ground survey efforts to quantify subspecies' use of specific sites, and to estimate subspecies' population sizes and long-term trends. Such studies would significantly advance our understanding of Dunlin space-time dynamics and the coordination of Dunlin conservation actions across the EAAF. FlywayNet: A hidden semi-Markov model for inferring the structure of migratory bird networks from count data Sam Nicol, Marie-Josée Cros, Nathalie Peyrard, Régis Sabbadin, Ronan Trépos, Richard A Fuller, Bradley K Woodworth Abstract: Every year, millions of birds migrate between breeding and nonbreeding habitat, but the relative numbers of animals moving between sites are difficult to observe directly. Here we propose FlywayNet, a discrete network model based on observed count data, to determine the most likely migration links between regions using statistical modelling and efficient inference tools. Our approach advances on previous studies by accounting for noisy observations and flexible stopover durations by modelling using interacting hidden semi-Markov Models. In FlywayNet, individual birds sojourn in stopover nodes for a period of time before moving to other nodes with an unknown probability that we aim to estimate. Exact estimation using existing approaches is not possible, so we designed customised versions of the Monte Carlo expectation-maximisation and approximate Bayesian computation algorithms for our model. We compare the efficiency and quality of estimation of these approaches on synthetic data and an applied case study. Our algorithms performed well on benchmark problems, with low absolute error and strong correlation between estimated and known parameters. On a case study using citizen science count data of the Far Eastern Curlew (Numenius madagascariensis), an endangered shorebird from the East Asian-Australasian Flyway, the ABC and MCEM algorithms generated contrasting recommendations due to a difference in optimisation criteria and noise in the data. For ABC, we recovered key features of population-level movements predicted by experts despite the challenges of noisy unstructured data. Understanding connectivity places local conservation efforts and threat mitigation in the global context, yet it has proven difficult to rigorously quantify connectivity at the population level. Our approach provides a flexible framework to infer the structure of migratory networks in birds and other organisms. Current breeding distributions and predicted range shifts under climate change in two subspecies of Black-tailed Godwits in Asia Zhu, Bing-Run; Verhoeven, Mo; Velasco Saragoni, Nicolás; Sanchez Aguilar, Lisa; Zhang, Zhengwang; Piersma, Theunis Abstract: Habitat loss and shifts associated with climate change threaten global biodiversity, with impacts likely to be most pronounced at high latitudes. With the disappearance of the tundra breeding habitats, migratory shorebirds that breed at these high latitudes are likely to be even more vulnerable to climate change than those in temperate regions. We examined this idea using new distributional information on two subspecies of Black-tailed Godwits Limosa limosa in Asia: the northerly, bog-breeding L. l. bohaii and the more southerly, steppe-breeding L. l. melanuroides. Based on breeding locations of tagged and molecularly assayed birds, we modelled the current breeding distributions of the two subspecies with species distribution models, tested those models for robustness and then used them to predict climatically suitable breeding ranges in 2070 according to bioclimatic variables and different climate change scenarios. Our models were robust and showed that climate change is expected to push bohaii into the northern rim of the Eurasian continent. Melanuroides is also expected to shift northward, stopping in the Yablonovyy and Stanovoy Ranges, and breeding elevation is expected to increase. Climatically suitable breeding habitat ranges would shrink to 16% and 11% of the currently estimated ranges of bohaii and melanuroides, respectively. Overall, this study provides the first predictions for the future distributions of two little-known Black-tailed Godwit subspecies and highlights the importance of factoring in shifts in bird distribution when designing climate-proof conservation strategies. Home Range and Habitat Use of the Swan Goose (Anser cygnoides L. 1758) during Wintering in the Seocheon Tidal Flat, South Korea, Using GPS-Based Telemetry Joo, Sungbae; Choi, Yu-Seong; Lee, Sang-Yeon Abstract: Simple Summary Due to the rapid environmental changes in the Seocheon Tidal Flat, South Korea, important staging and wintering sites of the vulnerable Far East Russin population of Swan Goose are threatened. To provide practical information for establishing protection strategies based on Swan Goose behavioral characteristics, we estimated core home range and habitat use patterns over time at the Seocheon Tidal Flat during wintering. Based on the GPS tracking data, the core home range and habitat use characteristics of the Swan Goose differed significantly between daytime and nighttime (Day: 59.9 km(2), Night: 40.3 km(2), on average, 100% MCP). In addition, our data indicated that Swan Goose has two important overnight resting areas in the Seocheon Tidal Flat, South Korea, namely the Janggu Bay and sand dune areas in Yubu Island. The Seocheon Tidal Flat is an important staging and wintering site for the Far East Russian population of Swan Goose (Anser cygnoides) in the East Asian-Australasian Flyway. However, rapid environmental changes for tourism in this area can threaten the survival of this vulnerable population by hindering sufficient rest and wintering; therefore, establishing protection strategies based on Swan Goose behavioral characteristics is necessary. Here, we estimated Swan Goose core home ranges and habitat use based on GPS tracking data collected at the Seocheon Tidal Flat in South Korea from 2017-2018. The home range of Swan Geese was estimated to be an area from Yubu Island in the south to Janggu Bay in the north; however, the core home range and habitat use characteristics differed significantly between daytime and nighttime (Day: 59.9 km(2), Night: 40.3 km(2), on average, 100% MCP). During the day (08:00-18:00), Swan Geese mostly spent time resting or feeding on tidal flats, especially those around tidal channels or paddy fields near Janggu Bay, whereas they mostly rested on sand dunes near Yubu Island along with the mudflats at Janggu Bay at night. Our results provide practical information on the habitat use of wintering Swan Geese population over time and indicate that Yubu Island is an important resting place. Hence, these results can contribute to evaluating threats to Swan Geese and establishing management and protection strategies for the Seocheon Tidal Flat, a major wintering site for the Far East Russian population of Swan Geese. Impact of hydrological processes on wetland landscapes and wintering migratory birds in a large floodplain lake (Poyang Lake, China) Fei Du, Shiyan Wang, Zhen Han, Xiaobo Liu, Chang Liu, Aiping Huang, Kaiqi Chen, Shilin Zhao, Liang Wang, Zhi Jiang Abstract: Hydrological processes are an important factor influencing the wetland landscapes and the quality of wintering migratory birds habitat in Poyang Lake. However, most of the research on a small spatiotemporal scale and there is a lack of studies on the impact of hydrological processes on migratory bird habitats. This study analysed the response of the Poyang Lake wetland landscape to low water levels from 1990 to 2016 and determined the relationship between hydrological processes, wetland landscape characteristics and migratory bird habitats. According to the results, the number of days during the study period when the maximum water level was higher than the current water level (MaxDay) and the average water level from the 40th to 50th day prior to the current day (D50) are two critical factors affecting the area of grassland in Poyang Lake. In particular, a D50 value of 9.5-11.0 m is important for maintaining the grassland area and growth of wetland vegetation. Besides, the water level should not exceed 11 m from mid-late October to early November and should be maintained between 7.58 and 7.97 m in mid-late December that can maximize the habitat area of migratory birds. Furthermore, this study used ecological threshold to propose the optimal inundation period of Cyperus rotundus L. community, Leersia japonica community, Polygonum criopolitanum community, Phragmites australis community, Triarrhena lutarioriparia community, Carex spp. community and Phalaris arundinacea community, which are 124-174, 31-101, 199-249, 65-147, 51-121, 110-190 and 175-253 days, respectively. Spatial distribution and temporal trends of classical and emerging persistent organic pollutants (POPs) in black-tailed gull (Larus crassirostris) eggs from Korea Mi Jang, Won Joon Shim, Gi Myung Han, Sung Yong Ha, Youna Cho, Miran Kim, Sang Hee Hong Abstract: This study monitored the spatiotemporal trends of persistent organic pollutants (POPs) contamination along the Korean coasts using eggs of the black-tailed gull, a resident bird that occupies a high trophic position in the marine food web. Black-tailed gull eggs were collected from three breeding islands located in the western (Seoman-do), southern (Hong-do), and eastern (Dok-do) seas of Korea during 2015-2019, and egg contents were analyzed for classical and emerging POPs. Among the target analytes, levels of emerging POPs such as brominated flame retardants (BFRs) and perfluoroalkyl acids (PFAAs) were significantly higher in eggs from Seoman-do than other islands. Global positioning system tracking data show that seagulls from Seoman-do traveled frequently to two neighboring major cities (Incheon and Seoul), indicating that the accumulation of BFRs and PFAAs in bird eggs is directly affected by the pollution characteristics of urban areas. Overall, the ratios of PFAA and BFR to the total POPs in eggs from the islands increased over time, while the proportion of classical POPs decreased. A shift from classical POPs to BFRs and PFAAs in seagull eggs was identified. Interestingly, perfluorooctanoic acid (PFOA), which exhibits limited bioaccumulation, was detected at higher levels in eggs from Seoman-do, indicating widespread use of PFOA and maternal transfer to seabird eggs. Continuous monitoring of PFAAs in marine environments of Korea is needed. This study demonstrates that monitoring of seabird eggs is effective for detecting spatial and temporal trends of POPs in the marine environment, and provides insights into emerging POPs such as PFAAs. Generating population estimates for migratory shorebird species in the world’s largest flyway Birgita D. Hansen, Danny I. Rogers, Doug Watkins, Dan R. Weller, Robert S. Clemens, Mike Newman, Eric J. Woehler, Taej Mundkur, Richard A. Fuller Abstract: Population estimates are widely used to underpin conservation decisions. However, determining accurate population estimates for migratory species is especially challenging, as they are often widespread and it is rarely possible to survey them throughout their full distribution. In the East Asian–Australasian Flyway (EAAF), this problem is compounded by its size (85 million square kilometres) and the number of migratory species it supports (nearly 500). Here, we provide analytical approaches for addressing this problem, presenting a revision of the EAAF population estimates for 37 migratory shorebird species protected under Australian national environmental legislation. Population estimates were generated by (1) summarizing existing count data in the non-breeding range, (2) spatially extrapolating across uncounted areas, and (3) modelling abundance on the basis of estimates of breeding range and density. Expert review was used to adjust modelled estimates, particularly in under-counted areas. There were many gaps in shorebird monitoring data, necessitating substantial use of extrapolation and expert review, the extent of which varied among species. Spatial extrapolation to under-counted areas often produced estimates that were much higher than the observed data, and expert review was used to cross-check and adjust these where necessary. Estimates of population size obtained through analyses of breeding ranges and density indicated that 18 species were poorly represented by counts in the non-breeding season. It was difficult to determine independently the robustness of these estimates, but these breeding ground estimates were considered the best available data for 10 species that mostly use poorly surveyed freshwater or pelagic habitats in the non-breeding season. We discuss the rationale and limitations of these approaches to population estimation, and how they could be modified for other applications. Data available for population estimates will vary in quality and extent among species, regions and migration stage, and approaches need to be flexible enough to provide useful information for conservation policy and planning. 2) Conservation & Management Prospects for monitoring bird migration along the East Asian-Australasian Flyway using weather radar Xu Shi, Cheng Hu, Joshua Soderholm, Jason Chapman, Huafeng Mao, Kai Cui, Zhijun Ma, Dongli Wu, Richard A. Fuller Abstract: Each year, billions of birds migrate across the globe, and interpretation of weather radar signals is increasingly being used to document the spatial and temporal migration patterns in Europe and America. Such approaches are yet to be applied in the East Asian-Australasian Flyway (EAAF), one of the most species-rich and threatened flyways in the world. Logistical challenges limit direct on-ground monitoring of migratory birds in many parts of the EAAF, resulting in knowledge gaps on population status and site use that limit evidence-based conservation planning. Weather radar data have great potential for achieving comprehensive migratory bird monitoring along the EAAF. In this study, we discuss the feasibility and challenges of using weather radar to complement on-ground bird migration surveys in the flyway. We summarize the location, capacity and data availability of weather radars across EAAF countries, as well as the spatial coverage of the radars with respect to migrants' geographic distribution and migration hotspots along the flyway, with an exemplar analysis of biological movement patterns extracted from Chinese weather radars. There are more than 430 weather radars in EAAF countries, covering on average half of bird species' passage and non-breeding distributions, as well as 70% of internationally important sites for migratory shorebirds. We conclude that the weather radar network could be a powerful resource for monitoring bird movements over the full annual cycle throughout much of the EAAF, providing estimates of migration traffic rates, site use, and long-term population trends, especially in remote and less-surveyed regions. Analyses of weather radar data would complement existing ornithological surveys and help understand the past and present status of the avian community in a highly threatened flyway. Linking landscape characteristics to shorebird habitat quality changes in a key stopover site along the East Asian-Australasian Flyway migratory route Houlang Duan, Xiubo Yu Abstract: The area and quality of shorebird stopover habitat along the key East Asian-Australasian Flyway migratory route has decreased. The cause is not fully understood. We apply an InVEST (Integrated Valuation of Ecosystem Services and Trade-offs) model to examine shorebird habitat quality between 1975 and 2020 in the Yellow River Delta (YRD), and link landscape characteristics to habitat quality. Mean habitat quality declined from 0.42 to 0.20, areas of high habitat quality declined by 31.75%, and those of low and medium quality increased by 18.67% and 12.98%, respectively. Increased percentages of landscape (PLAND) and largest patch index (LPI) for city, industrial mining, reservoir/pond, and mariculture land-usage categories, and decreased PLAND and LPI for coastal wetlands significantly contribute to decreased mean habitat quality. Increased mean patch area (AREA_MN) and area-weighted mean patch fractal dimension (FRAC_AM) for city and reservoir/pond also greatly contribute to habitat quality decrease. For Spartina alterniflora, increased PLAND, LPI, number of patches (NP), AREA_MN, FRAC_AM and aggregation index (AI) contribute to reduced mean habitat quality. In the Shandong YRD National Nature Reserve, the impact of increased S. alterniflora invasion on shorebird habitat quality is greater than that of other forms of land use. In contrast, in Non-Reserve, the increased area of degraded land poses a greater threat to habitat quality than other factors. Managing S. alterniflora in Reserve, and reducing human activity in Non-Reserve, is required to curtail further decreases in habitat quality. Habitat quality assessment of wintering migratory birds in Poyang Lake National Nature Reserve based on InVEST model Haifeng Xu, Bin Dong, Xiang Gao, Zhili Xu, Chunqiu Ren, Lei Fang, Zezhu Wei, Xiao Liu & Zhipeng Lu Abstract: Poyang Lake National Nature Reserve (PLNNR) is an important resting place for wintering migratory birds on the East Asian-Australasian Flyway (EAAF). In recent years, due to human activities and climate change, the area of wetlands has shown a downward trend, and the number and habitat of wintering migratory birds have been threatened. It is urgent to evaluate the habitat quality of wintering migratory birds in PLNNR. Therefore, the InVEST model and landscape index were used to evaluate the habitat quality of wintering migratory birds, and the grey correlation theory was used to reveal the response of typical wintering migratory bird population to habitat quality. The results showed that the habitat quality of the PLNNR was still at a high level, but showed a downward trend, with the average index of habitat quality decreasing from 0.872 to 0.817. The area of the highest quality habitat decreased by 3394.92 hm(2), the area of the lowest, low, and medium quality habitats increased by 3112.11 hm(2), and the area of the high quality habitat remained stable. The lowest, low, and medium quality habitat expanded from the middle to the south of the PLNNR mainly because of the expansion of construction land and cultivated land. The area with deterioration in habitat quality was 10,477.53 hm(2), mainly concentrated in the center and south of the PLNNR. The area with restoration in habitat quality was 6148.26 hm(2), mainly concentrated in the Bang Lake and Dacha Lake. The area with no change in habitat quality remained stable. The fragmentation degree and shape complexity of highest and high quality habitats increased, dominance degree and connectivity decreased, and the landscape pattern of habitat quality showed a downward trend. Typical wintering migratory birds have a strong correlation with highest, high, and low habitat quality, and there is a downward trend with the deterioration of habitat quality. Finally, this paper puts forward constructive suggestions on the degradation of habitat quality caused by land-use change. Exploring the risks and benefits of flexibility in biodiversity offset location in a case study of migratory shorebirds Nicole Shumway, Megan I Saunders, Sam Nicol, Richard A Fulle, Noam Ben-Moshe, Takuya Iwamura, Sun W Kim, Nicholas J Murray, James E M Watson, Martine Maron Abstract: Biodiversity offsets aim to counterbalance the residual impacts of development on species and ecosystems. Guidance documents explicitly recommend that biodiversity offset actions be located close to the location of impact because of higher potential for similar ecological conditions, but allowing greater spatial flexibility has been proposed. We examined the circumstances under which offsets distant from the impact location could be more likely to achieve no net loss or provide better ecological outcomes than offsets close to the impact area. We applied a graphical model for migratory shorebirds in the East Asian-Australasian Flyway as a case study to explore the problems that arise when incorporating spatial flexibility into offset planning. Spatially flexible offsets may alleviate impacts more effectively than local offsets; however, the risks involved can be substantial. For our case study, there were inadequate data to make robust conclusions about the effectiveness and equivalence of distant habitat-based offsets for migratory shorebirds. Decisions around offset placement should be driven by the potential to achieve equivalent ecological outcomes; however, when considering more distant offsets, there is a need to evaluate the likely increased risks alongside the potential benefits. Although spatially flexible offsets have the potential to provide more cost-effective biodiversity outcomes and more cobenefits, our case study showed the difficulty of demonstrating these benefits in practice and the potential risks that need to be considered to ensure effective offset placement. Assessing the combined threats of artificial light at night and air pollution for the world's nocturnally migrating birds Frank A. La Sorte, Myla F. J. Aronson, Christopher A. Lepczyk, Kyle G. Horton Abstract: Aim Two important environmental hazards for nocturnally migrating birds are artificial light at night (ALAN) and air pollution, with ambient fine particulate matter (PM2.5) considered to be especially harmful. Nocturnally migrating birds are attracted to ALAN during seasonal migration, which could increase exposure to PM2.5. Here, we examine PM2.5 concentrations and PM2.5 trends and the spatial correlation between ALAN and PM2.5 within the geographical ranges of the world's nocturnally migrating birds. Location Global. Time period 1998-2018. Major taxa studied Nocturnally migrating birds. Methods We intersected a global database of annual mean PM2.5 concentrations over a 21-year period (1998-2018) with the geographical ranges (breeding, non-breeding and regions of passage) of 225 nocturnally migrating bird species in three migration flyways (Americas, n = 143; Africa-Europe, n = 36; and East Asia-Australia, n = 46). For each species, we estimated PM2.5 concentrations and trends and measured the correlation between ALAN and PM2.5, which we summarized by season and flyway. Results Correlations between ALAN and PM2.5 were significantly positive across all seasons and flyways. The East Asia-Australia flyway had the strongest ALAN-PM2.5 correlations within regions of passage, the highest PM2.5 concentrations across all three seasons and the strongest positive PM2.5 trends on the non-breeding grounds and within regions of passage. The Americas flyway had the strongest negative air pollution trends on the non-breeding grounds and within regions of passage. The breeding grounds had similarly negative air pollution trends within the three flyways. Main conclusions The combined threats of ALAN and air pollution are greatest and likely to be increasing within the East Asia-Australia flyway and lowest and likely to be decreasing within the Americas and Africa-Europe flyways. Reversing PM2.5 trends in the East Asia-Australia flyway and maintaining negative PM2.5 trends in the Americas and Africa-Europe flyways while reducing ALAN levels would likely be beneficial for the nocturnally migrating bird populations in each region. Influence of heavy metals on Saunders's Gull (Saundersilarus saundersi) reproduction in the Yellow River Estuary: risk assessment and bioaccumulation Yuewei Yang, Fengfei Sun, Kai Liu, Junfeng Chen, Tong Zheng & Meizhen Tang Abstract: The heavy metal migration in the food chain exerted significant influence on the survival and reproduction of wetland birds and then disturbed and threatened the balance and health of the estuary ecosystem. In this study, the concentration of heavy metals (Cu, Cr, Fe, Mn, Cd, Ni, and Pb) in surface sediment of the Yellow River Estuary (YRE), the food sources of Saunders's Gull (Saundersilarus saundersi) nestlings, and the egg structure of birds were analyzed to determine the bioaccumulation and reproductive influence on wetland bird. The results indicated higher mean concentrations of sediment heavy metals than their corresponding background values in 2019, with the exception of Fe. Notably, the metal Cd exceeded geochemical background value by 1561.5% in 2018 and 1353.9% in 2019, resulting in severe contamination associated with Cd in the YRE (with geo-accumulation indexes of 3.44 and 3.23). Biomagnification factor (BMF) of heavy metals demonstrated that the concentrations of Cr, Ni, and Cu decreased with the trophic level rising while Cd, Mn, Pb, and Fe denoted bio-amplification in the food chain. The residual indexes showed that the food resources of Saunders's Gull were polluted by Cr, Pb, and Cu. Additionally, a higher enrichment of heavy metals was observed in the eggshell membrane. Metal concentrations had significant influences on the reproduction of Saunders's Gull, except for Cd, among which Ni, Pb, Cu, and Fe may have contributed to the reproductive success of birds, whereas the hatching failure of birds may be caused by Cr and Mn. It is of great importance to monitor the contamination of the wetland ecosystem and provide effective management and protection of the wildlife in the YRE. Heavy metal exposure to a migratory waterfowl, Northern Pintail (Anas acuta), in two peri-urban wetlands Mukherjee, Arkajyoti; Pal, Sudin; Das, Papita; Mukhopadhyay, Subhra Kumar Abstract: In this study, the heavy metal exposure risk model was employed to assess the exposure risk to a predominantly herbivore waterfowl, Northern Pintail, wintering in two wetland habitats in the Purulia district of West Bengal, located on overlapping Central Asian Flyway (CAF) and East Asian-Australasian Flyway (EAAF). Both wetlands were important staging and roosting grounds for migratory waterfowl for ages. The exposure model was used to quantify the risk of exposure to metals through oral ingestion. Exposure doses of Cu, Zn, Pb, and Cr through food plants ingestion and food-associated sediment consumption pathways were two potent sources of heavy metal exposure in the waterfowl under study. Exposure through water intake was ignored as metals were either of negligible concentrations or below the detection limit in water samples. Heavy metal concentrations showed significant positive correlations between bottom sediment and plant at both sites. At Purulia Sahebbandh (Site 1), the total exposure dose of all four metals was much higher than their conforming tolerable daily intake (TDI), and thereby, the metals might pose threats to the migratory wintering herbivorous waterfowl populations. However, in Adra Sahebbandh (Site 2), total exposure doses of Pb, Zn and Cu were much below their corresponding TDI. The Hazard Quotient (HQ) of Cr was highest followed by nonessential toxic Pb and these two elements could be considered as priority pollutants at Site 1. Prioritize threats were decreased in the following sequence: Cr > Pb > Cu > Zn at Site 1 and Cr > Zn > Pb > Cu at Site 2. Hazard Index was found to be >5 at Site 1 and for much higher metal loads a significant correlation between metal concentrations in plants, bottom sediment and exposure doses were also recorded. Therefore, the peri-urban Purulia Sahebbandh wetland could immediately be considered for risk control and demanded holistic management of important waterfowl habitats. Factors Driving the Abundance of Wintering Waterbirds in Coastal Areas of Guangdong Province, China Xitao Yang, Zhizhao Duan, Shuangshuang Li, Chunxia Zhang, Ming Qu, Guodong Hua, Xiaonan Niu, Huijian Hu and Dongmei Yu Abstract: The diverse habitat of the coastal areas of Guangdong, China, supports important waterbird populations, thereby contributing to the conservation of waterbirds in China and globally. The sensitivity of different waterbirds to environmental driving factors results in differences in habitat selection, which in combination affect waterbird abundance. This study investigated the effects of environmental and human disturbance factors on the abundance of waterbirds based on a survey of waterbirds in coastal areas of Guangdong Province, China. Redundancy analysis (RDA) was mainly used to study the relationships between the abundance of waterbirds and environmental and human factors. The results showed that the areas of mangrove and tidal flats were the main factors driving the abundance of shorebirds and open water waterbirds, whereas the areas of mangrove and water bodies were the main factors driving the abundance of wading birds and waterfowl, respectively. Road length and the areas of construction land were found to have negative effects on the abundance of waterbirds. A waterbird protection and management strategy was proposed based on the results. The Hwaseong Wetlands Reclamation Area and Tidal Flats, Republic of Korea: A Case of Waterbird Conservation in the Yellow Sea Nial Moores, Hanchul Jung, Hwa-Jung Kim, Bo-Yeon Hwang, Wee-Haeng Hur and Amaël Borzée Abstract: The reclamation of tidal flats is implicated in the declines of a large number of migratory waterbird species along the East Asia-Australasian Flyway, and has resulted in the assessment of Yellow Sea tidal flats as an Endangered habitat by the IUCN. Created in their present form by large-scale reclamation, the Hwaseong Wetlands on the Yellow Sea coast of the Republic of Korea are comprised of tidal flats, a large reclamation lake, and extensive areas of rice-fields and fallow land. As part of preparation for increased protections for these wetlands, we conducted bird surveys between late June 2020 and mid-June 2021. During this period, we recorded more than 150,000 waterbirds in the wetland and concentrations of 1% or more of 25 populations of waterbird. We also recorded a total of 16 globally threatened wetland species. As at many other coastal wetlands in the Yellow Sea, tidal flat obligate waterbird species used the tidal flats for foraging; and roosted in artificial wetlands which had been created through the reclamation process. The extensive areas of rice-field and other freshwater habitats in the Hwaseong Wetlands were also internationally important in their own right, supporting globally threatened amphibians and internationally important concentrations of foraging geese and floodplain-associated waterbird species. The movements of waterbirds between foraging and roosting areas we recorded make clear that conservation of the site’s biodiversity either as a Ramsar site or within a serial World Heritage Property would require protection of all the contiguous tidal flats and also of the most biodiverse rice-field and freshwater wetland areas. As elsewhere in the coastal zone of the Republic of Korea, this would first require the support of local stakeholders and also a reduction in jurisdictional issues between various local and national decision-making bodies. 3) Avian Influenza /Others Habitat loss exacerbates pathogen spread: An Agent-based model of avian influenza infection in migratory waterfowl Shenglai Yin, Yanjie Xu, Mingshuai Xu, Mart C M de Jong, Mees R S Huisman, Andrea Contina, Herbert H T Prins, Zheng Y X Huang, Willem F de Boer Abstract: Habitat availability determines the distribution of migratory waterfowl along their flyway, which further influences the transmission and spatial spread of avian influenza viruses (ATVs). The extensive habitat loss in the East Asian-Australasian Flyway (EAAF) may have potentially altered the virus spread and transmission, but those consequences are rarely studied. We constructed 6 fall migration networks that differed in their level of habitat loss, wherein an increase in habitat loss resulted in smaller networks with fewer sites and links. We integrated an agent-based model and a susceptible-infected-recovered model to simulate waterfowl migration and AIV transmission. We found that extensive habitat loss in the EAAF can 1) relocate the outbreaks northwards, responding to the distribution changes of wintering waterfowl geese, 2) increase the outbreak risk in remaining sites due to larger goose congregations, and 3) facilitate AIV transmission in the migratory population. In addition, our modeling output was in line with the predictions from the concept of "migratory escape", i.e., the migration allows the geese to "escape" from the location where infection risk is high, affecting the pattern of infection prevalence in the waterfowl population. Our modeling shed light on the potential consequences of habitat loss in spreading and transmitting AIV at the flyway scale and suggested the driving mechanisms behind these effects, indicating the importance of conservation in changing spatial and temporal patterns of AIV outbreaks. Genetic and Pathogenic Characterization of Avian Influenza Virus in Migratory Birds between 2015 and 2019 in Central China Zhongzi Yao, Huabin Zheng, Jiasong Xiong, Liping Ma, Rui Gui, Gongliang Zhu, Yong Li, Guoxiang Yang, Guang Chen, Jun Zhang, and Quanjiao Chen Abstract: Active surveillance of avian influenza virus (AIV) in wetlands and lakes is important for exploring the gene pool in wild birds. Through active surveillance from 2015 through 2019, 10,900 samples from wild birds in central China were collected, and 89 AIVs were isolated, including 2 subtypes of highly pathogenic AIV and 12 of low-pathogenic AIV; H9N2 and H6Ny were the dominant subtypes. Phylogenetic analysis of the isolates demonstrated that extensive intersubtype reassortments and frequent intercontinental gene exchange occurred in AIVs. AIV gene segments persistently circulated in several migration seasons, but interseasonal persistence of the whole genome was rare. The whole genomes of one H6N6 and polymerase basic 2 (PB2), polymerase acidic (PA), hemagglutinin (HA), neuraminidase (NA), M, and nonstructural (NS) genes of one H9N2 virus were found to be of poultry origin, suggesting a spillover of AIVs from poultry to wild birds. Importantly, one H9N2 virus only bound to human-type receptor, and one H1N1, four H6, and seven H9N2 viruses possessed dual receptor-binding capacity. Nineteen of 20 representative viruses tested could replicate in the lungs of mice without preadaptation, which poses a clear threat of infection in humans. Together, our study highlights the need for intensive AIV surveillance. IMPORTANCE Influenza virus surveillance in wild birds plays an important role in the early recognition and control of the virus. However, the AIV gene pool in wild birds in central China along the East Asian-Australasian flyway has not been well studied. Here, we conducted a 5-year AIV active surveillance in this region. Our data revealed the long-term circulation and prevalence of AIVs in wild birds in central China, and we observed that intercontinental gene exchange of AIVs is more frequent and continuous than previously thought. Spillover events from poultry to wild bird were observed in H6 and H9 viruses. In addition, in 20 representative viruses, 12 viruses could bind human-type receptors, and 19 viruses could replicate in mice without preadaption. Our work highlights the potential threat of wild bird AIVs to public health. Influenza virus surveillance in wild birds plays an important role in the early recognition and control of the virus. However, the AIV gene pool in wild birds in central China along the East Asian-Australasian flyway has not been well studied.
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Webinar on Chinese Crested Tern in the Yellow Sea and Seabird Conservation in China
Listed as Critically Endangered on the IUCN’s Red List, the Chinese Crested Tern’s global…
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Conserving Critically Endangered Christmas Island Frigatebird
The Christmas Island Frigatebird (Fregata andrewsi) is a globally threatened migratory seabird; listed as Vulnerable by the International Union for the Conservation of Nature (IUCN). In Australia, the species…
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