2011-05 - iyimtaak - n6 - em1 - ang
DESCRIPTION
to plants and wildlife Eastmain-1 HydroElEctric dEvElopmEnt In tributaries 4 3 In dike bays 3 A sense of commitment… number of spawning grounds developed Spawning grounds In 2005 and 2006, walleye, lake whitefish and brook trout spawning grounds were developed in tributaries of Eastmain 1 reservoir. Walleye/whitefish brook trout information bulletin — number 6, may 2011TRANSCRIPT
i y i m t a a k ᐊ ᔨ ᒥ ᐦ ᑖ ᒄ ᙮
A sense of commitment…to plants and wildlife
Eastmain-1 HydroElEctric dEvElopmEnt
information bulletin — number 6, may 2011
In 2005 and 2006, walleye, lake whitefish and brook trout spawning grounds were developed in tributaries of Eastmain 1 reservoir.
number of spawning grounds developed
Spawning grounds
Walleye/whitefish brook trout
In tributaries 4 3
In dike bays 3
Spawning grounds developed in tributaries of Eastmain 1 reservoir
For more information, please contact:martin DeSgagné, Advisor - Native Affairs and Projects 1 800 903-9705, ext. 4951
This Information Bulletin is published by Hydro-Québec Direction régionale La Grande Rivière
A sense of commitment…to plants and wildlife
The physical characteristics of the spawning grounds developed (picture 3), e.g., depth, flow velocity and substrate* quality (picture 1), were noted during the monitoring activities. Monitoring consisted in documenting the spawning of fish by collecting eggs using nets placed on or near the spawning grounds (picture 2).
Flow conditions at all spawning grounds met the requirements for target species reproduction and corresponded to design criteria.
It was confirmed at all sites that the spawning grounds were stable and clean, and that spawning actually occurred. Thus all spawning grounds were productive, but not necessarily for the target species intended (see table).
Walleye
Picture 1. cleanliness of the substrate in a streambed spawning ground
Picture 2. Harvesting brook trout eggs.
Picture 3. the red line traces the contour of the spawning ground.
lake whitefish
Brook trout
GLOSSARY*Substrate: rocky riverbed and bedrock
Confirmed spawning by species vs. type of spawning grounds developed
Spawning grounds developed for each target species
number of spawning grounds
Confirmed spawning
Walleye lake whitefish brook trout
Walleye/whitefish 7 5a 3 —
Brook trout 3 3 2b 1a) For example, it was thus confirmed that walleye spawned in 5 of the 7 walleye/whitefish spawning grounds.a) It was also confirmed that lake whitefish spawned in 2 of the 3 brook trout spawning grounds.