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BIBI Data 2012

Sampling Date: September 22, 2012
Sample Collection: Lake Forest Park Stream Keepers
Analysis: Mindy Allen

In summary:

Lyon Cr. near 178th - 28 (Fair)
Lyon Cr. along 35th - 22 (Poor)
McAleer Cr. at Animal Acres - 24 (Poor)
McAleer Cr. along Perkins - 24 (Poor)

A little disappointing in that one of the McAleer Cr. locations often scores in the Fair range; but encouraging in that the 28 on Lyon Cr. is the first time any Lyon Cr. sample has scored in the Fair range. Interesting to note that the residents immediately upstream from the sample location undertook a major project two years ago to stabilize the stream bank and reduce erosion. Since sedimentation is a major culprit in low BIBI scores, there could certainly be a connection.

There are two files for each of the four locations. The "Raw Data" File contains the individual macro invertebrate counts for each of three replicate (samples) from the site. The "Scoring" file contains scoring for each of three replicates and a composite (average) score. Scores are determined with reference to 10 indicators which are assigned points based upon the array of critters found in the sample. Pointwise, only a 1, 3, or 5 are assigned to each indicator.
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  14k v. 1 Dec 10, 2012, 9:23 PM Derek Brown
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