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Peepers like this one (right) were installed across the slough last summer.
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Michelle Lorah (left) and Tracey Spencer (right) from USGS Baltimore using microelectrodes to measure redox species.
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Janet Herman (left) from UVA and OK District Chief Kim Winton (right) are two of the scientists convinced to join the fun.
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Scott Christenson rigs up a super peeper extractor in order to remove a peeper from the slough.
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Scott Christenson retrieves a peeper from the snake-filled slough (left). A close-up of the peeper being sampled (right).
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Tracey Spencer measures potentials with the microelectrode while Michelle Lorah collects water for Fe, CH4, SO42-, DOC, and HCO3-.
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Peeper samples were analyzed by both standard geochemical techniques and by electrochemical techniques.
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Isabelle Cozzarelli measures NH4+ and H2S.
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Wells were sampled along the transect (MLS 35 through MLS 80) and in the slough. Slough wells were sampled with a syringe because of low yield.
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Jeanne Jaeschke (left) and Robin Krest (right) sample MLS wells along the transect.
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