Data from: Sonar estimation of summer chum and pink salmon in the Anvik River, Alaska, 2018
Brodersen, Naomi B. (2020), Data from: Sonar estimation of summer chum and pink salmon in the Anvik River, Alaska, 2018, Dryad, Dataset, https://doi.org/10.5061/dryad.8gh0135
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 15 to July 26, 2018. Apportionment to species was determined using data collected from tower counts. A total of 305,098 (SE 5,926) summer chum and 1,122,346 (SE 7,588) pink salmon were estimated to have passed the sonar site. A beach seine sample fishery was conducted to collect age, sex, and length information. Both sonar systems functioned well with minimal interruptions to operation. Range of ensonification was considered adequate for most fish that migrated upstream.