Data from: Sonar estimation of summer chum and pink salmon in the Anvik River, Alaska, 2018 ...

• Main Author: Brodersen, Naomi B.
• Format: Dataset
• Language: English
• Published: Dryad 2019
• Subjects: dual-frequency identification sonar DIDSON; Anvik River; pink salmon; Oncorhynchus keta; Oncorhynchus gorbuscha; chum salmon; Pink salmon; Alaska
• Online Access: https://dx.doi.org/10.5061/dryad.8gh0135; https://datadryad.org/stash/dataset/doi: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. ... : 2018 Anvik River Summer Chum Salmon Estimates Summer chum salmon daily and cumulative passage estimates at the Anvik River sonar project, 2018. 2018 Anvik River Pink Salmon Estimates Pink salmon daily and cumulative passage estimates at the Anvik River sonar project, 2018. 2018 Anvik River Tower Counts Salmon species and proportion of summer chum salmon observed migrating upstream during tower counts by day and bank at the Anvik River sonar project, 2018. 2018 Anvik River Climatic Observations Climatic observations recorded daily at 1600 hours at the Anvik River sonar project site, 2018. 2018 Anvik River Water Temperature Daily water temperatures on the left bank at the Anvik River sonar project, 2018. ...