RE: NANFA-- ichthyology's not that bad... really!

Bruce Stallsmith (
Tue, 05 Jun 2001 17:59:00 -0400

>Drift nets are rectangular, fine mesh (350u) nylon nets. Standard size is
>12x18" mouth and 40" length. Drift nets have a reinforced frame at the
>opening that is anchored into the stream bottom with stakes (like long tent
>stakes). They work on the same principle as a Wisconsin plankton net, or a
>Surber net, excpet that they remain at a fixed location. By measuring
>of water at the opening and measuring flow, you can use collections to
>estimate density of organisms passing through the net (e.g., number/m3).
Thanks, Jan. That's what I thought but I wanted an outside opinion. The key
is to find a safe, private place to install it (as usual!).

--Bruce Stallsmtih
Huntsville, AL

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