Sonar estimation of summer chum and pink salmon in the Anvik River, Alaska, 2019

Naomi Brodersen
Dual-frequency identification sonar (DIDSON) was used to estimate adult summer chum salmon Oncorhynchus keta and pink salmon O. gorbuscha passage in the Anvik River from June 16 to July 26, 2019. Apportionment to species was determined from data collected from tower counts. A total of 249,014 (SE 2,034) summer chum and 241 (SE 81) pink salmon were estimated to have passed the sonar site. A beach seine sample fishery was conducted to collect age, sex,...
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2 downloads reported since publication in 2020.

These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
What does this mean?