Fishing with Rod Discussion Forum

Fishing in British Columbia => Fishing-related Issues & News => Topic started by: wildmanyeah on December 06, 2017, 01:42:48 PM

Title: Salish Sea Marine Survival Project
Post by: wildmanyeah on December 06, 2017, 01:42:48 PM
This video sums up a lot of the issues at hand.

https://www.youtube.com/watch?time_continue=510&v=F_ApX5twtSE (https://www.youtube.com/watch?time_continue=510&v=F_ApX5twtSE)
Title: Re: Salish Sea Marine Survival Project
Post by: Fisherbob on December 16, 2017, 05:59:01 PM
This is interesting also.
https://www.youtube.com/watch?v=nT82d_kB3NE&app=desktop
Title: Re: Salish Sea Marine Survival Project
Post by: RalphH on December 16, 2017, 06:37:29 PM
Radio tag studies done in the Salish sea indicate coho and chinook smolts raised and released from hatcheries have lower survival rates than wild fish.

People seem to forget we had a an earlier collapse in the 70s when seal stocks were about 1/8th of today's seal population.  We then switched over to heavy hatchery enhancement at a time ocean survival rates were very high. This disguised the original collapse. Surprisingly seal #s increased perhaps subsidized by hatchery salmon production.  In the early 90s rates declined dramatically and stayed low.