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NymphnutJanuary 4th, 2008, 5:21 am
Berks Co. PA

Posts: 2
Hi.... I'm new to this Forum. Next month my Trout Unlimited Chapter is going to have a discussion on global warming and its effects on trout. Now, I dont want to start any big argument on who or what is causing global warming. BUT, my question is- Does anyone know and have Proof that global warming has already caused harm to any natural trout stream anywhere here in North Eastern USA ? And if so, how has it effected that stream ? Were is and whats the name of that stream ?
Thanks for the help .. Bob
TaxonJanuary 4th, 2008, 9:40 am
Site Editor
Plano, TX

Posts: 1294
Bob-

This is not intended as a statement either supporting or debunking global warning. However, it seems to me that global warming would be virtually impossible to demonstrate on an individual stream basis.

Just for the purpose of discussion, let us pretend that the average stream temperature for all streams in the US increased by .1 degrees from 2006 to 2007. And let us further pretend that the average temperature for your favorite local stream decreased by 2 degrees from 2006 to 2007. Does this mean that your favorite local stream was immune from the effects of global warming? This may not be particularly well stated, but you probably understand what I'm trying to say.
Roger Rohrbeck
www.FlyfishingEntomology.com
MartinlfJanuary 4th, 2008, 7:50 pm
Moderator
Palmyra PA

Posts: 2907
Yes, I'd suspect that there are too many variables that affect stream temperature to account for all of them. For example, a rainy spring could lead to increased plant growth, a more dense canopy, and cooler water temperatures, even if the overall air and ground temperature had increased.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

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