Photos of Paramecium Pond/Sediments
















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acknowledgements (thoughts? :^) )

Acknowledgements The authors would like to thank Dan Brabander and Kathleen Gilbert for their tireless assistance and instruction, Jordan Tynes for providing impressive drone images of the pond system, and former GEOS 101 students for contributing useful data from prior years.
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Hopefully a Money Graph

Image
Hello! Here's my "money graph", and I can certainly make more, but this one raises questions that I hope we can draw conclusions about: why does Silver Thread, especially at the source, contain more manganese than the pond? Is manganese being trapped in ST sediment? Why is zinc concentration so high at the ST source, drop off in the rest of the ST, and get higher again in the pond? Where is zinc coming from? Chromium and copper are only present at detectable levels in the pond and not in the stream, which is interesting-- why? And finally, why are lead concentrations higher in the pond than in the silver thread? So many good questions to be explored!
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Methods (can be turned into bulletpoints if too wordy)

Methods Grab Samples Samples from the middle of the pond were taken by boat using a ponar-type grab sampler and samples from the edge were taken using a peat corer or by hand. These samples were then plated in petri dishes and left to dry in a furnace. Dry samples were ground using a (name of instrument) and divided into samples to be analyzed via XRF analysis. Core Samples Core samples were taken by students in earlier years by using a Russian peat corer. The peat corer is pushed into the sediment and twisted to collect a cylindrical core, which is then removed, photographed, measured, sliced into sections, and left to dry. Dry samples were ground using a mixer mill and prepared for XRF analysis. X-Ray Fluorescence (XRF) Analysis Methods Photons are shot at sample, causing inner-shell electrons to be ejected. Outer-shell electrons fill vacancy and emit more photons. Each element has a different signature, which is picked up by the XRF detector. XRF Analysis can show both ...
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