Background:GPS/GSM tracking data were used to contrast use of(i)habitats and(ii)protected areas between three Arctic-nesting Greater White-fronted Geese(Anser albifrons,GWFG)populations throughout the annual cycle.We ...Background:GPS/GSM tracking data were used to contrast use of(i)habitats and(ii)protected areas between three Arctic-nesting Greater White-fronted Geese(Anser albifrons,GWFG)populations throughout the annual cycle.We wished to demonstrate that the East Asian Continental Population(which winters on natural wetlands in the Chinese Yangtze River floodplain and is currently declining)avoids using farmland at multiple wintering sites.We also gath-ered tracking evidence to support general observations from two increasing population of GWFG,the North Sea-Baltic(which winters in Europe)and the West Pacific(which winter in Korea and Japan)winter mostly within farmland landscapes,using wetlands only for safe night roosts.Methods:We tracked 156 GWFG throughout their annual cycle using GPS/GSM transmitters from these three popu-lations to determine migration routes and stopover staging patterns.We used Brownian Bridge Movement Models to generate summer,winter and migration stopover home ranges which we then overlaid in GIS with land cover and protected area boundary at national level to determine habitat use and degree of protection from nature conserva-tion designated areas.Results:Data confirmed that 73%of European wintering GWFG homes ranges were from within farmland,com-pared to 59%in Japan and Korea,but just 5%in China,confirming the heavy winter use of agricultural landscapes by GWFG away from China,and avoidance of farmland at multiple sites within the Yangtze River floodplain.The same GWFG used farmland in northeast China in spring and autumn,confirming their experience of exploiting such habi-tats at other stages of their annual cycle.Chinese wintering birds showed the greatest overlap with protected areas of all three populations,showing current levels of site safeguard are failing to protect this population.Conclusions:Results confirm the need for strategic planning to protect the East Asian Continental GWFG popu-lation.While the site protection network in place to protect the species seems adequate,it has failed 展开更多
China produces more food than any other country on earth,but that's not the whole story.From buying swathes of Australia to keeping a frozen pork reserve and from organic fads to a patchwork of underworked farmlan...China produces more food than any other country on earth,but that's not the whole story.From buying swathes of Australia to keeping a frozen pork reserve and from organic fads to a patchwork of underworked farmland,the Middle Kingdom finds itself in a curious place in the agriculture sector.Experts,officials,and farmers alike tackle these questions to fix the fields of the nation.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.31970433)China Biodiversity Observation Networks(Sino BON)+1 种基金funded by the DLR(ICARUS directive)the Lower Saxony Ministry of Food and Agriculture and Consumer Protection。
文摘Background:GPS/GSM tracking data were used to contrast use of(i)habitats and(ii)protected areas between three Arctic-nesting Greater White-fronted Geese(Anser albifrons,GWFG)populations throughout the annual cycle.We wished to demonstrate that the East Asian Continental Population(which winters on natural wetlands in the Chinese Yangtze River floodplain and is currently declining)avoids using farmland at multiple wintering sites.We also gath-ered tracking evidence to support general observations from two increasing population of GWFG,the North Sea-Baltic(which winters in Europe)and the West Pacific(which winter in Korea and Japan)winter mostly within farmland landscapes,using wetlands only for safe night roosts.Methods:We tracked 156 GWFG throughout their annual cycle using GPS/GSM transmitters from these three popu-lations to determine migration routes and stopover staging patterns.We used Brownian Bridge Movement Models to generate summer,winter and migration stopover home ranges which we then overlaid in GIS with land cover and protected area boundary at national level to determine habitat use and degree of protection from nature conserva-tion designated areas.Results:Data confirmed that 73%of European wintering GWFG homes ranges were from within farmland,com-pared to 59%in Japan and Korea,but just 5%in China,confirming the heavy winter use of agricultural landscapes by GWFG away from China,and avoidance of farmland at multiple sites within the Yangtze River floodplain.The same GWFG used farmland in northeast China in spring and autumn,confirming their experience of exploiting such habi-tats at other stages of their annual cycle.Chinese wintering birds showed the greatest overlap with protected areas of all three populations,showing current levels of site safeguard are failing to protect this population.Conclusions:Results confirm the need for strategic planning to protect the East Asian Continental GWFG popu-lation.While the site protection network in place to protect the species seems adequate,it has failed
文摘China produces more food than any other country on earth,but that's not the whole story.From buying swathes of Australia to keeping a frozen pork reserve and from organic fads to a patchwork of underworked farmland,the Middle Kingdom finds itself in a curious place in the agriculture sector.Experts,officials,and farmers alike tackle these questions to fix the fields of the nation.
