Stream Monitoring Popes Head Creek Town of Clifton

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The team assembles!

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Method of collection using a kick net

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Above: netted macros taken to a table for sorting

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Above:Students begn the tedious process of sorting  invertebrates into sampling trays for analysis

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Above: a volunteer Id’s and records the number of each type  macroinvertebrate collected

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Above: Sometimes ID requires careful scrutiny. Here a student uses a field microscope to properly ID a specimen

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Sampling tray (above) Hellgramite larva (below)

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 Students from Lake Braddock High School practice utilize acquired skills in AP Environmental Science this year to collect macroinvertebrates in Popes Head Creek.  A sample of size of 700+ macroinvertebrates were collected.  Prior collections indicated a rich diversity of macroinvertebrates in comparison to other Fairfax County streams.  However, diversity doesn’t always equate to “good” stream quality. The abundance or dominance of  pollution tolerant species over less pollution tolerant species collected  indicate a poor rating for stream quality on this occasion.

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