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The effects of climate and land use change on the potential distribution and nesting habitat of the Lesser Adjutant in Nepal

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Avian Research 2023年第3期14卷 326-335页

作者： Hem Bahadur Katuwal Hari Prasad Sharma Prashant Rokka Krishna Prasad Bhusal Bishnu Prasad Bhattarai Sabina Koirala Sandeep Chhetri Luitel Shailendra Yadav Ganesh Sah Hem Sagar Baral Laxman Prasad Poudyal Lin Wang Rui-Chang Quan Center for Integrative Conservation Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnan666303China Southeast Asia Biodiversity Research Institute Chinese Academy of SciencesYezinNay Pyi Taw05282Myanmar Yunnan International Joint Laboratory of Southeast Asia Biodiversity Conservation MenglaYunnan666303China Nepal Zoological Society Kathmandu44600Nepal Central Department of Zoology Institute of Science and TechnologyTribhuvan UniversityKathmandu44600Nepal Faculty of Forestry Agriculture and Forestry UniversityHetaudaMakwanpur44107Nepal IUCN SSC bird Red List Authority Rue Mauverney1196GlandSwitzerland Mithila Wildlife Trust JanakpurdhamDhanusa45600Nepal Zoological Society of London-Nepal Office Kathmandu44600Nepal Institute of Land Water and SocietySchool of Environmental SciencesCharles Sturt UniversityAlbury-WodongaAustralia Shivapuri-Nagarjun National Park Department of National Parks and Wildlife ConservationKathmanduNepal

Climate change and land use change pose a threat to the world’s biodiversity and have significant impacts on the geographic distribution and composition of many bird species,but little is known about how they affect threatened large-sized waterbird species that rely on agricultural *** address this gap,we investigated how climate and land use changes influence the distribution and nesting habitats of the globally vulnerable Lesser Adjutant(Leptoptilos javanicus) in *** 2012 and 2023,we collected distribution data from 24 districts and nesting site information from 18 *** a nation-wide breeding survey conducted in 2020,we documented a total of 581 fledglings from 346 nests in 109 *** ensemble model predicted a current potential distribution of 15%(21,637 km2) and a potential nesting habitat of 13%(19,651 km2) for the species in *** highest predicted current suitable distribution and nesting habitat was in Madhesh Province,while none was predicted in Karnali *** majority of this predicted distributional and nesting habitat falls on agricultural landscapes(>70%).Our model showed a likely range expansion of up to 15%(21,573 km2) for the distribution and up to 12%(17,482 km2) for the nesting habitat under SSP5-8.5 scenarios for the *** range expansion is expected to occur mainly within the current distribution and breeding range(Tarai and some regions of Siwalk),particularly in Lumbini and Sudurpashchim provinces,and extend to the northern portions(Siwalik and Mid-hill regions) in other ***,the current Protected Areas and Important bird and Biodiversity Areas are inadequate for providing optimal habitats for the *** the model suggests range expansion,the use of such novel habitats is primarily contingent on the availability and protection of large-sized trees(particularly Bombax ceiba,observed in 65% of colonies) in agricultural regions where nesting ***,our research sugges

关键词： Agricultural landscapes Bombax ceiba Ensemble modeling farmland bird IBA Nest site

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