A semi-regular description of what’s going on at the drift fences on the Savannah River Site. Most will refer to Rainbow Bay--an isolated wetland completely encircled by a drift fence with pitfall traps. The Rainbow Bay fence has been “run” every day since September of 1978! We'll also talk about all types of fieldwork occurring at the Carolina Bays and other wetlands on site.
"The last word in ignorance is the man who says of an animal or plant: ‘What good is it?’”--Aldo Leopold
“No matter how intently one studies the hundred little dramas of the woods and meadows, one can never learn all the salient facts about any one of them”--Aldo Leopold
Monday, January 31, 2011
Constructed wetlands...part 4
As I mentioned the other day, we've found 13 different frog and toad species that have colonized the constructed H-02 wetlands on site. So far no salamander species have shown up. We also have seen several snake species including garter snakes and banded water snakes (shown in photos). I've also seen marsh hawks hanging around and we usually see a good number of red winged blackbirds. I hadn't realized how many until we went to the wetlands the other night and as we walked around we were blown away by how many birds were in the bulrush in the wetlands. Literally had to be over 1,000 red-winged blackbirds. There have also been some ducks and quite the surprise this summer a juvenile alligator showed up for a while. It's clear that the wetlands have attracted a lot of wildlife, now our job is to figure out whether the habitat is ok for amphibian reproduction or whether it is an ecological trap. We've started looking at this question for three species: the southern leopard frog, the eastern narrowmouth toad, and the southern toad. Next we'll start talking about those studies.
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