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

Aerial surveys were conducted in the Elbe Estuary, Germany, to count harbour seals on their haul-out sites. Haul-out sites were located within the intertidal zone, usually close...研究人员在德国易北河口（Elbe Estuary）开展航空调查，以统计港海豹（harbour seals）在其上岸休憩位点（haul-out sites）的个体数量。该类上岸休憩位点均位于潮间带（intertidal zone）内，通常紧邻……