大虾帮忙翻一下这段话，GWD一套里的，逻辑意思我搞不懂，谢谢

Although no one has quantified

changes in the rate of straying

as a result of the disturbances

caused by humans, there is no

(70)      reason to suspect that the effect

would be qualitatively different

than what was seen in the

aftermath of the laceType w:st="on">MountlaceType> laceName w:st="on">SaintlaceName>

Helens eruption.  Such a dra-

(75)      matic increase in straying from

damaged areas to more pristine

streams results in substantial

gene flow, which can in turn lower

the overall fitness of subsequent

generations.

http://forum.chasedream.com/dispbbs.asp?boardID=25&ID=87902&page=1

看看这下面的帖子，供参考。

人类的行为在本质上与火山爆发对salmon的影响差不多。更多的错误回流导致基因的流失。