作者单位：
US Geol Survey, Maine Cooperat Fish & Wildlife Res Unit, Orono, ME USA
[1]
Nature Conservancy, Northern Cent Valley, Chico, CA USA
[2]
US Fish & Wildlife Serv, Migratory Bird Management Off, Anchorage, AK USA
[3]
Univ Maine, Dept Wildlife Fisheries & Conservat Biol, Orono, ME USA
[4]
Unity Coll, Sch Biodivers Conservat, Unity, ME 04988 USA
[5]
发布时间
2018-11-29
换一批
