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Ecological damage by goldfish/letters & web "facts"

To: GWL subscribers
From: Gardenlit@aol.com
Subject: Ecological damage by goldfish

Further to the topic of ecological damage by goldfish, if any of you are 
interested in reading correspondence from a fish biologist, and the web 
posting that prompted me to contact him, please let me know.

The fish biologist believes there is "a real ecological catastrophe" with 
exotic fish and it's pretty clear to me now that we also have an issue 
related to gardeners and the garden industry, that ornamental fish owners 
have contributed to the problem, and we as garden writers have an obligation 
to inform the public, to suggest ways to alleviate the problem and recommend 
alternatives.

After an extensive web search, I selected and made a sequenced list of 
"points" which are excerpts from a report at http://nas.er.usgs.gov/ and 
other web findings chosen to illustrate some of the many aspects to this 
problem (14 items). 

I made the list for my own education, but I am happy to share it with anyone 
on this listserve who requests it, with the understanding that it is simply a 
starting point for further research and thought. Of my list, the biologist 
says "You have done a nice job of covering many potential consequences of 
stocking nonnative fish: direct effects on native fish via competition for 
food, and a host of indirect effects like spread of disease and parasites, 
impacts to aquatic plants and water clarity, and

other impacts like harm to non-fish biota like amphibians, etc. As you

probably suspect, you've only scratched the surface of the issue."

The biologist also calls attention to a recent book "Nonindigenous Fishes 
Introduced into Inland Waters of the United States" available from: 
http://www.fisheries.org/publications/catbooks/x51027.shtml

which he has not yet seen himself, but suspects may be one of the best 
sources of

reliable information on this topic.

Sally Williams
Editor and publisher
Garden Literature Press
gardenlit@aol.com

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