Abundance

Lower Columbia River Rainbow Trout Spawning Analysis 2018

The suggested citation for this analytic report is: Thorley, J.L. and Dalgarno, S. (2018) Lower Columbia River Rainbow Trout Spawning Analysis 2018. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/934446658. 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.

Lower Columbia River Rainbow Trout Spawning Analysis 2017

The suggested citation for this analytic report is: Thorley, J.L., Muir, C.D. and Dalgarno, S. (2018) Lower Columbia River Rainbow Trout Spawning Analysis 2017. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/453582501. 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.

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.

Lower Duncan River Rainbow Trout Spawning Analysis 2017

The suggested citation for this analytic report is: Thorley, J.L. & Dalgarno, S.I.J. (2018) Lower Duncan River Rainbow Trout Spawning Analysis 2017. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/897442882. Background The Lardeau River (LAR) flows 45 km from Trout Lake to join the Lower Duncan River approximately 1 km downstream of Duncan Dam (DDM). The Duncan River downstream of the Lardeau River (DRL) then extends a further 11 km downstream to Kootenay Lake.

Curtis and Qua Creeks Productivity Analysis 2017

The suggested citation for this analytic report is: Thorley, J.L. and Dalgarno, S. (2018) Curtis and Qua Creeks Productivity Analysis 2017. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/611560309. Background Water chemistry, invertebrate and fish data were collected from Curtis and Qua Creeks from 2015 to 2017 and periphyton data were collected in 2015 and 2016 to assess their productivity. The fish data were collected by depletion electrofishing. Methods Data Collection The data were collected by the Salmo Streamkeepers and Poisson Consulting in 2015 and by the Salmo Streamkeepers in 2016 and 2017.

Lower Duncan River Kokanee AUC Analysis 2017

The suggested citation for this analytic report is: Thorley, J.L. (2018) Lower Duncan River Kokanee AUC Analysis 2017. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/1498798685. Background Every fall, Kokanee from Kootenay Lake spawn in the Duncan-Lardeau system. Since 2008 aerial surveys have been conducted in the Lower Duncan River (LDR) to enumerate the number of kokanee spawners. The management questions are: What is the spawn run timing, fry emergence timing, and relative intensity of kokanee spawning in the Lower Duncan River?

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:

Middle Columbia River Fish Indexing Analysis 2016

The suggested citation for this analytic report is: Thorley, J.L. and Campos M. (2017) Middle Columbia River Fish Indexing Analysis 2016. A Poisson Consulting Analysis Report. URL: http://www.poissonconsulting.ca/f/577548349. Background The key management questions to be addressed by the analyses are: Is there a change in abundance of adult life stages of fish using the Middle Columbia River (MCR) that corresponds with the implementation of a year-round minimum flow? Is there a change in growth rate of adult life stages of the most common fish species using the MCR that corresponds with the implementation of a year-round minimum flow?

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.