Stock-Recruitment

Kaslo Bull Trout Productivity 2017

The suggested citation for this analytic report is: Thorley, J.L. and Dalgarno, S.I.J. (2018) Kaslo Bull Trout Productivity 2017. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/443864882. Background The Kaslo River and Keen Creek, which is a tributary of the Kaslo River, are important Bull Trout spawning and rearing tributaries on Kootenay Lake. From 2012 to 2017, field crews have night-snorkeled both systems in the fall and recorded all juvenile Bull Trout between 30 mm and 350 mm in length.

Duncan Lardeau Juvenile Rainbow Trout Abundance 2017

The suggested citation for this analytic report is: Thorley, J.L., Muir, C.D., Dalgarno, S. and Hogan P.M. (2017) Duncan Lardeau Juvenile Rainbow Trout Abundance 2017. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/492093238. Background Rainbow Trout rear in the Lardeau and Lower Duncan rivers. Since 2006 (with the exception of 2015) annual spring snorkel surveys have been conducted to estimate the abundance and distribution of age-1 Rainbow Trout. From 2006 to 2010 the surveys were conducted at fixed index site.

Lower Columbia River Fish Population Indexing Analysis 2016

The suggested citation for this analytic report is: Thorley, J.L. and Muir, C.D. (2017) Lower Columbia River Fish Population Indexing Analysis 2016. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/589633601. Background In the mid 1990s BC Hydro began operating Hugh L. Keenleyside (HLK) Dam to reduce dewatering of Mountain Whitefish and Rainbow Trout eggs. The primary goal of the Lower Columbia River Fish Population Indexing program is to answer two key management questions:

Kaslo Bull Trout Productivity Analysis 2016

The suggested citation for this analytic report is: Thorley, J.L. and Hogan P.M. (2017) Kaslo Bull Trout Productivity Analysis 2016. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/1827953676. Background The Kaslo River and Keen Creek, which is a tributary of the Kaslo River, are important Bull Trout spawning and rearing tributaries on Kootenay Lake. From 2012 to 2016, field crews have night-snorkeled both systems in the fall and recorded all juvenile Bull Trout between 30 mm and 350 mm in length.

Lardeau-Lower Duncan River Juvenile Rainbow Trout Abundance and Stock-Recruitment Analysis 2016

The suggested citation for this analytic report is: Thorley, J.L. and Hogan, P.M. (2016) Lardeau-Lower Duncan River Juvenile Rainbow Trout Abundance and Stock-Recruitment 2016. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/6848898. Background Juvenile Age-1 Gerrard Rainbow Trout from Kootenay Lake rear in the Lardeau and Lower Duncan rivers. From 2006 to 2014 and in 2016 spring snorkel surveys were done to estimate the abundance of Age-1 fish. From 2006 and 2010 the surveys were conducted at fixed index site.

Alouette Reservoir Kokanee Population Analysis 2015

The suggested citation for this analytic report is: Thorley, J.L., Hogan, P.M., Irvine, R.L. and Campos, M. (2016) Alouette Reservoir Kokanee Population Analysis 2015. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/1819975990. Background The Kokanee Age Structure Population Analysis (ALUMON #6) is a multi-year study to address potential impacts of reservoir operations on the reservoirs’ kokanee (Oncorhynchus nerka) population (Andrusak 2014). As part of the Alouette Reservoir Water Use Plan (WUP), the study’s focus is to address whether the current kokanee population is recruitment limited and if any identified recruitment limitation is related to BC Hydro operations.

Lower Columbia River Rainbow Trout Spawning Analysis 2015

The suggested citation for this analytic report is: Thorley, J.L. and Hogan, P.M. (2016) Lower Columbia River Rainbow Trout Spawning Analysis 2015. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/1611032936. Background Each spring in the Lower Columbia River (LCR) below the Hugh L. Keenleyside Dam (HLK) and in the Lower Kootenay River (LKR) below the Brilliant Dam, thousands of Rainbow Trout spawn. Since 1992, BC Hydro has stabilized the spring discharge releases from HLK to protect Rainbow Trout redds from dewatering.

Lardeau-Lower Duncan River Age-1 Rainbow Trout Abundance and Stock-Recruitment Analysis 2015

The suggested citation for this analytic report is: Thorley, J.L. and Hogan, P.M. (2015) Lardeau-Lower Duncan River Age-1 Rainbow Trout Abundance and Stock-Recruitment Analysis 2015. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/1007329429. Background Juvenile Gerrard Rainbow Trout from Kootenay Lake rear in the Lardeau and Lower Duncan rivers. Between 2006 and 2014 spring snorkel surveys have been undertaken to estimate the abundance of the age-1 fish. Between 2006 and 2010 the surveys were conducted at fixed index site.

Lower Columbia River Rainbow Trout Spawning Analysis 2014

The suggested citation for this analytic report is: Thorley, J.L. (2015) Lower Columbia River Rainbow Trout Spawning Analysis 2014. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/1157179155. 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. Since 1992, BC Hydro has stabilized the spring discharge releases from HLK to protect Rainbow Trout redds from dewatering.

Lardeau and Lower Duncan River Juvenile Rainbow Trout Analysis 2014

The suggested citation for this analytic report is: Thorley, J.L. and Hogan, P.M. (2014) Lardeau and Lower Duncan River Juvenile Rainbow Trout Analysis 2014. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/493327817. Background Juvenile Gerrard Rainbow Trout from Kootenay Lake rear in the Lardeau and Lower Duncan Rivers. The aims of the current analysis are to: Estimate the spring abundance of age-1 juvenile rainbow trout by year from snorkel survey data.