Benthic Macroinvertebrate Analysis of Twelve Sites in Point Reyes National Seashore Using the California Stream Bioassessment Procedure
Jon Lee Consulting and Ketcham B. 2001. Benthic Macroinvertebrate Analysis of Twelve Sites in Point Reyes National Seashore Using the California Stream Bioassessment Procedure
Thirty-six benthic macroinvertebrate samples were collected from twelve stream sites in Point Reyes National Seashore. Sample collection, laboratory processing, and taxa determination followed the California Stream Bioassessment Procedure for Point Source Pollution. Six biological metrics (Taxa Richness, EFT Taxa Richness, Modified EPT Index, Percent Dominant Taxon, Tolerance Value, Shannon's Diversity Index) were used for analysis. Metric scores from Olema Creek sample sites were compared individually while metric scores from the remaining sample sites were compared in pairs, above and below a disturbance. Metric scores were moderate to low for the sample sites evaluated. Metric scores suggest greater impairment at many of the downstream sites in comparison to upstream sites.
- Type
- Unpublished Report
- Authors
- Jon Lee Consulting; Ketcham, Brannon
- Date of Issue
- 2001-04
- Units
- PORE , SFAN
- Keywords
- Benthic Macroinvertebrates, creeks, procedures, streams, water quality, water resources
- Subjects
- Ecological Framework: Biological Integrity | Focal Species or Communities | Freshwater Invertebrates