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The Purse Seiner

Marine Conservation and Environmental Issues

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The Purse Seiner

Postby Max Ledbetter » Fri Nov 26, 2004 12:00 pm

In British Columbia, Canada, salmon purse seiners line up at fishing access points, forming well defined queues. These queues were measured over time, using a one-dimensional recording scale. Sixty-one overflights of Johnstone Strait and Queen Charlotte Strait were attempted; 51 flights were completed.

See http://www33.brinkster.com/ledbetter/ OR



And if you would like to post your Aquatic site, see my Aquatic Links page:

http://greenspun.com/boohoo/related.tcl ... %20Science

key words: Pacific Ocean, purse seine, fleet dynamics, overfishing, natural resource management, tragedy of the commons, extinction
Max Ledbetter
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Further references re. salmon fleet research

Postby Max Ledbetter » Sat Jan 22, 2005 9:53 pm

For further references to my work on salmon see


Max Ledbetter
Max Ledbetter
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Re: The Purse Seiner

Postby Max Ledbetter » Mon Apr 11, 2005 11:34 pm

More links can be found here:







These fisheries and aquatic science sites summarize field and statistical research and include an aquatic link directory and submission to 140 search engines for free.
Max Ledbetter
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It isn`t any better in the Columbia River

Postby robalo » Thu Nov 24, 2005 5:18 am

Even though native American peoples have done much to help restore salmon runs in the Columbia and Snake River systems, they refuse to act responsibly on a treaty agreement that gives them 50% of the salmon return. They use the number of fish raised in hatcheries to calculate their quota. A 4% return of adult salmon from the original number of fish raised is a pretty good return ratio. This allows the use of gillnets for a very extended period of time by the tribes,meaning that since there is no possibility of filling their quota, they can soak their nets all year long. The most damaging operations which impede salmon recovery are the dams. It is amazing these fish have not disappeared altogether. :roll:
"keep your head high and your pole straight in front of you." Captain John Brown, Marathon FL.1971
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