East Asia–Australasia Flyway

East Asia–Australasia Flyway
Name	East Asia–Australasia Flyway

East Asia–Australasia Flyway is a major avian migratory route linking the Arctic and temperate regions of East Asia with Australasia across vast coastal, inland, and marine habitats. The flyway supports millions of migratory waterbirds and shorebirds moving between breeding grounds and non‑breeding areas, connecting regions such as the Russian Far East, Mongolia, China, Japan, Korea, Philippines, Indonesia, Papua New Guinea, Australia, and New Zealand. Conservation of this route involves cooperation among national agencies, non‑governmental organizations such as BirdLife International, and multilateral instruments like the Convention on Migratory Species.

Overview and Geography

The flyway extends from Arctic and subarctic breeding sites in Siberia, Chukotka Autonomous Okrug, and the Kamchatka Peninsula through staging and stopover areas along the Yellow Sea, Bohai Sea, East China Sea, and the Gulf of Thailand to Australasia, including Torres Strait, Gulf of Carpentaria, and the coasts of Queensland and New South Wales. Key geographic features include tidal flats, estuaries, lagoons, mangroves, and inland wetlands such as the Songhua River, Mekong River, Murrumbidgee River, and Lancang River. Important administrative and conservation jurisdictions along the route include Heilongjiang, Jilin, Liaoning, Hokkaidō Prefecture, Gyeonggi Province, Palawan, and the Northern Territory (Australia).

Migratory Species and Ecology

The flyway supports iconic species including the Bar-tailed Godwit, Red Knot (Calidris canutus), Spoon-billed Sandpiper, Great Knot, Curlew Sandpiper, and Asian Dowitcher, alongside waterfowl such as the Tundra Swan, Swan Goose, Eastern Spot-billed Duck, and raptors like the Osprey. Breeding, moulting, and foraging ecology link northern tundra sites including Yamal Peninsula and Taymyr Peninsula with temperate and tropical non‑breeding areas such as the Yellow Sea Ecoregion, Mangrove Forests of the Sundarbans, and Kakadu National Park. Feeding strategies involve intertidal probing, visual foraging in mudflats, and long‑distance endurance flights demonstrated by tracked individuals studied by teams from the Australasian Wader Studies Group, Wetlands International, and universities such as Australian National University and Peking University.

Key Stopover Sites and Wetlands

Critical stopover and staging sites include the Yalu Jiang National Nature Reserve, the Bohai Bay tidal flats, Saemangeum reclamation area, Chongming Dongtan, Moreton Bay, Takahama Bay, Roebuck Bay, Broome, Sungei Buloh Wetland Reserve, Ramsar Convention‑listed wetlands such as Sundarbans Reserved Forest, Patcha‑Islands, and the East Asian-Australasian Flyway Partnership focal sites. These locations are essential for refuelling during migration and sustain populations that use sites under the jurisdictions of authorities like the Ministry of Ecology and Environment (China), Department of Environment and Natural Resources (Philippines), Department of Agriculture, Water and the Environment (Australia), and provincial agencies in Jiangsu and Zhejiang.

Threats and Conservation Measures

Threats include habitat loss from land reclamation and industrial development at sites such as Saemangeum Seawall, pollution events impacting Yellow Sea mudflats, climate change effects observed in Arctic Council assessments, overfishing altering food webs near Bohai Bay, invasive species pressures in New Zealand and Australia, and unsustainable hunting documented in parts of Southeast Asia. Conservation responses encompass protected area designation under national laws of China, Japan, Korea, and Australia, restoration projects at Roebuck Bay and Yalu Jiang, pollution regulation by bodies including Ministry of Environment (Japan), and community‑based stewardship led by organizations like WWF International and Conservation International.

International Agreements and Management

Management frameworks include the Ramsar Convention on Wetlands, the Convention on Biological Diversity, bilateral memoranda among China and Australia, the East Asian‑Australasian Flyway Partnership (a network of governments, NGOs, and intergovernmental agencies), and migratory species listings under the Convention on Migratory Species and the IUCN Red List processes. Regional coordination involves the Secretariat of the Pacific Regional Environment Programme, provincial administrations such as Jiangsu Provincial Government, and research collaborations with institutions like CSIRO, National University of Singapore, and Korean National Institute of Ecology.

Research, Monitoring, and Citizen Science

Research employs satellite telemetry by teams at Australian National University, banding programmes by the Japanese Bird Banding Association and Korean Bird Banding Centre, population surveys by Wetlands International and national bird societies such as BirdLife Australia, Royal Society for the Protection of Birds, Japanese Society for the Preservation of Birds, and long‑term datasets contributing to assessments by UNEP and the Intergovernmental Panel on Climate Change. Citizen science platforms including eBird, local volunteer groups in Broome, Moreton Bay Marine Park citizen monitors, and RSPB‑linked initiatives provide crucial observational data supporting adaptive management and policy decisions by ministries and conservation NGOs.

Category:Bird migration Category:Wetlands