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Re: Nymph Survey Through the Seasons
2006/9/11 8:26
From Chester County
Posts: 2645

Maurice wrote:
I don’t know why you gotta poke me in the eye to make your point. I am one of the biggest proponents of turning over rocks. And to your point, there is a thing called biological/behavioral drift that occurs at sunrise and sunset for about an hour where the “homeless” macros roam the currents looking for new places to habitate.

Some of those are aquatic worms of the pink variety...I hope anyway.

Behaviorial drift is an interesting as well as complex thing. It depends on the types of insects, time of day, season, predators, O2 content, temperature......

My point is, checking out the bugs under the rocks is definitely a smart thing, but it really doesn't solve the puzzle, for the most part it just lays out some the pieces of the puzzle.

And yes aquatic worms are a piece of the puzzle....DaveW seined up a whole bunch in the Letort a few years ago as I recall. All fun.

Posted on: 2017/11/18 10:03

Re: Nymph Survey Through the Seasons
2006/9/9 9:29
From Monessen, PA
Posts: 2739
Dave, I am curious about your seining technique. Do you have pictures of your net and how you use it?

As for Maurice's eye, I am reminded of the late great comedian Rodney Dangerfield: "My wife has all these marks all over her from people touching her with an eleven foot pole."

Posted on: 2017/11/19 10:25
"If the grandfather of the grandfather of Jesus had known what was hidden within him, he would have stood humble and awe-struck before his soul."

---Khalil Gibran

Re: Nymph Survey Through the Seasons
2016/1/24 14:30
From Gettysburg
Posts: 2243

JackM wrote:
Dave, I am curious about your seining technique. Do you have pictures of your net and how you use it?

I use what is commonly referred to as a "kick seine." Mine is homemade using soft window screen material between a couple of poles about 4' in length. The net part itself is about 20"x24 inches. I believe in PA such a seine must not exceed 4' square in total net size(?).

The way you use this is you stand in shallow current and put the net downstream of your body so that the mesh is down on the stream bottom. While holding the handles, you then use your feet to shuffle ("kick") the rocks just upstream of the net. To be consistent in this survey, I made three side to side kicks and three forward and backward kicks followed by a 10 second count before lifting up the net.

Posted on: 2017/11/19 20:52

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