นิเวศวิทยาการอพยพของเหยี่ยวนกเขาสายพันธุ์เอเชียสองชนิดที่อพยพผ่านเส้นทางอพยพเอเชียตะวันออกผ่านแผ่นดินใหญ่
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สมาชิกทีมคนอื่น ๆ
รายละเอียดโครงการ
วันที่เริ่มโครงการ: 01/10/2021
วันที่สิ้นสุดโครงการ: 30/09/2022
คำอธิบายโดยย่อ
Migratory corridors play a crucial role for these species to successfully reach breeding and wintering areas. Because of accelerated land-use changes there is currently an urgent need to identify and protect migratory corridors to ensure the conservation of species using them, especially those species whose migratory ecology is poorly known.
Raptors are at the apex of the food chain, and are therefore important indicators of the state of the environment. Many species are threatened due to fragmentation and loss of habitat through conversion of forest to agricultural land. Defining their breeding grounds and wintering habitats, and the routes and staging areas they use in moving between these, is essential since all areas along their flightline are important for their conservation.
Several hundred thousand raptors migrate annually between breeding areas in temperate zones of Russia and China through East Asia to wintering grounds in SE Asia using two main flyways. These are the East Asian Oceanic Flyway, (north-eastern Siberia, eastern China, Korea and Japan to Taiwan, the Philippines and Indonesia); and the more westerly, mainly overland, East Asia Continental Flyway route from Siberia and China to mainland South-East Asia through peninsular Thailand, Malaysia and the Indonesian Archipelago. There are scant data on detailed migration routes, the spatial and temporal use of these, on the numbers of birds involved or their ecology in their (largely undefined) wintering grounds. The East Asian Flyway raptor migration remains the least understood in the world.
Since 2010 Khao Dinsor in Chumphon province has been recognized as the best site in Southeast Asia for monitoring the southward migration of raptors and other diurnal migrant landbirds. This current project intends to build on the information already gained from ringing and counting raptors at Khao Dinsor during 2011-2020, and expand our studies to follow the full migration routes of the sparrowhawks passing through the region.
Making use of advances in satellite technology we will fit small (<5 g) global positioning system transmitters to two sparrowhawk species, Chinese Sparrowhawks (Accipiter soloensis) and Japanese Sparrowhawks (A. gularis), enabling us to track them as they migrate south through Chumphon to their wintering grounds, assumed to be in Malaysia or Indonesia. We will then be able to identify the areas and habitats they use in winter, the routes taken on their return, including stopover sites used, and locate their breeding areas so as to complete our understanding of their migratory profile. It is anticipated that this study will reveal significant ecological and behavioural difference between these two species, presently reflected in their different morphology.
The data collected will be highly relevant to the conservation of the two study species and perhaps yield insights applicable to other raptor species. This research will put Khao Dinsor and Thailand in the spotlight of raptor migration studies, and gain worldwide publicity, benefitting both the local community and the nation’s wildlife research capacity. Most importantly we will be able to identify the areas used by raptors so as to target conservation efforts along the flyway.
คำสำคัญ
- Chinese Sparrowhawk
- Japanese Sparrowhawk
- migratory raptor
- mtDNA diversity
- tracking technology
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