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KRIS West Marin-Sonoma: Chart Page

Area Drakes Bay
Topic Aquatic Invertebrates: Drakes Bay Tributaries RRIBI Scores 1999
 
Caption:  The results displayed show the mean total RRIBI (Russian River Index of Biological Integrity) score at several locations in Drakes Bay tributaries during fall 1999. The reference value shown in the graph provides a regional comparison to preliminary scores developed by the California Department of Fish and Game for the Russian River Index of Biological Integrity using California Stream Bioassessment Procedure (CSBP) for first to third order streams (Harrington et al., 1999). This study found that IBI scores between 6 and 11 reflected poor biotic conditions (6 is the minimum score possible). The Point Reyes National Seashore collected these aquatic invertebrates according to the CSBP protocols and they were identified by aquatic entomologist John Lee. See Map for the location of sampling sites and Info Links for more information.


To learn more about this topic click Info Links .
To view additional information (data source, aquisition date etc.) about this page, click Metadata .
To view the table with the chart's data, click Chart Table web page.
To download the table with the chart's data, click invert_pore_sum_1999_drakes.db (size 4,096 bytes) .
To view the table with the chart's source data, click Source Table web page.
To download the table with the chart's source data, click invert_pore_sum_1999.xls.db (size 6,144 bytes)
 
 
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