Differences in migration phenology of warblers at two stopover sites in eastern Russia suggest a longitudinal migration pattern  

作　　者：LászlóBozó Yury Anisimov Wieland Heim 

机构地区：[1]Eötvös Loránd University,Department of Systematic Zoology and Ecology,1117,Budapest,Páazmány Péter sétány1/C,Hungary [2]Baikalsky State Nature Biosphere Reserve,Tankhoy,Russia [3]Turku University,Department of Biology,FI-20014,Turku,Finland [4]Münster University,Institute of Landscape Ecology,Münster,Germany

出　　处：《Avian Research》2023年第1期7-12,共6页鸟类学研究（英文版）

基　　金：Funding supply on Baikal Bird Ringing Station was conducted by Baikalsky State Nature Reserve。

摘　　要：Long-distance migratory birds often face major geographical barriers on their journey.While some species are able to cross them,others use longer routes to avoid such barriers.Little is known about the strategies of Siberian landbird migrants,which either cross or circumvent the deserts and mountain ranges of Central Asia en route to their non-breeding sites in Southeast Asia.Here we compare data on migration phenology and morphology from two bird ringing stations in eastern Russia,situated at similar latitudes but with a longitudinal difference of 1500 km,to hypothesise migration patterns.We found significant differences in timing between the two sites(birds migrated significantly earlier in spring and significantly later in autumn in the east),suggesting longitudinal migration as a result of migration detour.However,morphological differences show a less clear pattern.We argue that most Siberian landbirds might opt for a detour through the Russian Far East instead of a direct route in order to avoid unfavourable stop-over habitat in Central Asia.However,tracking studies will be necessary to prove this.

关 键 词：East Asian flyway Barrier DETOUR MIGRATION PASSERINE PHYLLOSCOPUS 

分 类 号：Q958[生物学—动物学]