NANFA-- Quantative Sampling?

Todd Crail (
Sun, 6 Apr 2003 15:04:04 -0400

Greetings all,

It appears I'm going to be working with a professor and his grad students at
the University of Toledo a sampling study they're doing on the effect of a
low head dam on species distribution (Thank you Dr. Ceas, this could turn
out *seriously* cool :) The area in question presents some issues in taking
quantative samples and we weren't real sure how to go about this with
sampling method and preventing putting anyone's life in danger with spring
stream levels.

The area adjacent above and below the dam are very very channelized. They
did a sample last fall after drought, and the water in some places (even
below the dam) was up to their chests, which blew my mind. They were able
to block off sections, however, because the pools were very narrow, and get
an accurate sample. Spring provides an entirely different situation with
it's high water.

The best idea at this point is to work the flood plains of the area at high
water (there are large flood plains clearly marked by stabalizing brush that
wouldn't have us in any danger of slipping into the channel). He had
thought of electroshocking, but really doesn't want to go that route. He
feels that it's going to be a monsterous hassle (1 because he doesn't have
the equipment, 2 he doesn't really want to cause mortalities).

We were discussing how we could quantatively seine a flood plain, and
wondered if others had done this in their research, and more directly....
How did you go about this? Is there a standard practice or length of time
for pulling the seine? Things of that nature. How would you / have you
approached this?

He has seines galore, so that won't be an issue of availability.

Any suggestions are very welcomed, and I thank you for any help you have in
advance :)


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