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So to explain this
observation, we can look at our temperature data. Here, temperature is in
˚C along the x-axis, and for now, you can ignore the blue line and
focus on the red line. The temperature shows a distinct thermocline, where
there is a period of rapid temperature decline. On this graph, this occurs
bewteen 5 and 10 meters. This stratification of the water column by
temperature only occurred at the deeper site 1 and was not observed for the
shallower sites.
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