Survival

Lower Columbia River Fish Population Indexing 2023

The suggested citation for this analytic appendix is:

Thorley, J.L. (2024) Lower Columbia River Fish Population Indexing 2023. A Poisson Consulting Analytic Appendix. URL: https://www.poissonconsulting.ca/f/25988200.

Background

In the mid 1990s BC Hydro began operating Hugh L. Keenleyside (HLK) Dam to reduce dewatering of Mountain Whitefish and Rainbow Trout eggs.

Cowichan Lake Cuththroat Trout Exploitation Analysis 2023

The suggested citation for this analytic appendix is:

Dalgarno, S. & Thorley, J.L. (2024) Cowichan Lake Cuththroat Trout Exploitation Analysis 2023. A Poisson Consulting Analytic Appendix. URL: https://www.poissonconsulting.ca/f/1638637752.

Background

Cowichan Lake supports an important Cutthroat Trout fishery. To provide information on the natural and fishing mortality, Cutthroat Trout were caught by angling and tagged with acoustic transmitters and/or a $100 reward tag. Some acoustic transmitters were equipped with depth and temperature sensors.

Lower Columbia River Fish Population Indexing 2022

The suggested citation for this analytic appendix is:

Thorley, J.L., Dalgarno, S., Lyons, S. (2023) Lower Columbia River Fish Population Indexing 2022. A Poisson Consulting Analytic Appendix. URL: https://www.poissonconsulting.ca/f/1392245070.

Background

In the mid 1990s BC Hydro began operating Hugh L. Keenleyside (HLK) Dam to reduce dewatering of Mountain Whitefish and Rainbow Trout eggs.

Quesnel Exploitation Analysis 2022

The suggested citation for this analytic appendix is:

Dalgarno, S. & Thorley, J.L. (2023) Quesnel Exploitation Analysis 2022. A Poisson Consulting Analytic Appendix. URL: https://www.poissonconsulting.ca/f/1230088647.

Background

Quesnel Lake supports a recreational fishery for Rainbow Trout. To provide information on the natural and fishing mortality, Rainbow Trout were caught by angling and tagged with acoustic transmitters and/or a $100 and $10 reward tag.

Cowichan Lake Cuththroat Trout Exploitation Analysis 2022

The suggested citation for this analytic appendix is:

Dalgarno, S. & Thorley, J.L. (2023) Cowichan Lake Cuththroat Trout Exploitation Analysis 2022. A Poisson Consulting Analytic Appendix. URL: https://www.poissonconsulting.ca/f/86098464.

Background

Cowichan Lake supports an important Cutthroat Trout fishery. To provide information on the natural and fishing mortality, Cutthroat Trout were caught by angling and tagged with acoustic transmitters and/or a $100 reward tag. Some acoustic transmitters were equipped with depth and temperature sensors.

Quesnel Exploitation Analysis 2021

The suggested citation for this analytic appendix is:

Dalgarno, S. & Thorley, J.L. (2022) Quesnel Exploitation Analysis 2021. A Poisson Consulting Analytic Appendix. URL: https://www.poissonconsulting.ca/f/978976227.

Background

Quesnel Lake supports a recreational fishery for Rainbow Trout. To provide information on the natural and fishing mortality, Rainbow Trout were caught by angling and tagged with acoustic transmitters and/or a $100 and $10 reward tag.

Lower Columbia River Fish Population Indexing 2021

The suggested citation for this analytic report is:

Thorley, J.L. & Hussein, N. (2022) Lower Columbia River Fish Population Indexing 2021. A Poisson Consulting Analytic Appendix. URL: https://www.poissonconsulting.ca/f/1314086833.

Background

In the mid 1990s BC Hydro began operating Hugh L. Keenleyside (HLK) Dam to reduce dewatering of Mountain Whitefish and Rainbow Trout eggs.

Horse Lake Exploitation Analysis 2021

The suggested citation for this analytic appendix is:

Thorley, J.L. & Pearson, A.D. (2022) Horse Lake Exploitation Analysis 2021. A Poisson Consulting Analytic Appendix. URL: https://www.poissonconsulting.ca/f/556371688.

Background

Horse Lake supports a recreational fishery for Lake Trout (Salvelinus namaycush). To estimate their natural and fishing mortality, individuals were caught by angling and tagged with acoustic transmitters and/or external reward tags. Acoustically tagged fish were detected by a series of seven receivers distributed through the lake as well as annual or biannual mobile detection surveys. The mobile detection survey was conducted by deploying receivers for approximately 10 minutes at 90 locations arranged on a 400 m x 400 m grid. The external reward tags included a phone number for anglers to report their recaptures. In 2009 and 2021, a summer profundal index netting (SPIN) survey was done on the lake.

Lower Columbia River Fish Population Indexing 2020

The suggested citation for this analytic report is:

Thorley, J.L. & Hussein, N. (2021) Lower Columbia River Fish Population Indexing 2020. A Poisson Consulting Analytic Appendix. URL: https://www.poissonconsulting.ca/f/392669554.

Background

In the mid 1990s BC Hydro began operating Hugh L. Keenleyside (HLK) Dam to reduce dewatering of Mountain Whitefish and Rainbow Trout eggs.

Lower Columbia River Rainbow Trout Spawning 2020

The suggested citation for this analytic appendix is:

Thorley, J.L. and Amies-Galonski, E. (2021) Lower Columbia River Rainbow Trout Spawning 2020. A Poisson Consulting Analytic Appendix. URL: https://www.poissonconsulting.ca/f/626789785.

Background

Each spring in the Lower Columbia River (LCR) below Hugh L. Keenleyside Dam (HLK) and in the Lower Kootenay River (LKR) below Brilliant Dam, thousands of Rainbow Trout spawn.