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•What adds to the concerns is data provided by
USGS fall forage trawling offshore in 1999
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•Most abundant at 37 m and found in abundance
all the way out to 73 m
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•This presents concerns for lake trout and other
LH species that spawn offshore
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•Overall more concerned with goby trends and
potential impacts to fish communtiy
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- aggressive behavior, proliferation
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Catch at depth
of round gobies at three sites in southern Lake Huron (data from all sites
were pooled)
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Spread in
distribution to deepwater areas in southern areas of lake
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-up to 70 m
depth but most abund at 37m; small
<100mm
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-offshore waters
warm in 99 (9-10C), could be depth/temp phenomenon
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97=1, 98=3,
99=480 - only at southern lake sites (temp trends offshr in N?)
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