Appendix B. A detailed description of the sampling frame and design used to estimate diurnal salmonid predation by harbor seals in the Alsea River estuary, Oregon, USA.

A detailed description of the sampling frame and design used to estimate diurnal salmonid predation by harbor seals in the Alsea River estuary, Oregon, USA.

本说明详细介绍了用于估算美国俄勒冈州阿尔西河河口（Alsea River estuary）港海豹（harbor seals）日间捕食鲑科鱼类（salmonid）情况的抽样框（sampling frame）与抽样设计（sampling design）方案。