Harbour and grey seal counts in the Elbe Estuary, Germany, between Wedel and ...

Aerial surveys were conducted in the Elbe Estuary, Germany, to count seals on their haul-out sites. Haul-out sites were located within the intertidal zone, usually close to the...本研究于德国易北河口实施航空调查，以统计海豹在其上岸休憩位点（haul-out sites）上的数量。此类上岸休憩位点均位于潮间带范围内，通常紧邻……