1984-2003, Abundance and Diversity Statistics of Sampled Fish in USEPA Region 7 - Rivers and Streams


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	1984-2003, Abundance and Diversity Statistics of Sampled Fish in USEPA Region 7 - Rivers and Streams
Date	2008-11-05T16:31:00
Date type	Publication: Date identifies when the resource was issued
Presentation form	Digital map: Map represented in raster or vector form
Abstract	This database contains the biological indices from the fish data collected from 16 Oct. 1984 to 09 Sep 2003 and compiled by CPCB from state agencies in USEPA Region 7 for the Biocriteria Technical Assistance Group, project FED35850 and FED41920. Six sources of data were merged: IDNR Ecoregions - Iowa Dept. of Natural Resource IDNR REMAP2 - Iowa Dept. of Natural Resource KDWP All - Kansas Dept. of Wildlife and Parks MDNR REMAP2 - Missouri Dept. of Conservation NDEQ pre-2002 - Nebraska Dept. of Environmental Quality Tristate CPCB - Kansas Biological Survey From the fish data, we calculated the following indices for each sampling event. 1) Total Taxa Richness: Count of all taxa found at that site on that date. 2) Simpsons D: Measures the probability that two individuals randomly selected from a sample will belong to the same species, 0 represents infinite diversity and 1 represents no diversity. The formula is D = [?n(n-1)]/N(N-1) where n = the total number of organisms of a particular species and N = the total number of organisms of all species. 3) Proportion Sensitive: Count of all sensitive taxa found at that site on that date divided by total taxa richness expressed as a proportion (i.e., 0.083 is 8.3%). Taxa were marked as sensitive based on two documents that list sensitivities: 1. EPA Rapid BioAssessment Protocols for Use in Wadeable Streams and Rivers Appendix C: Tolerance and Trophic Guilds of Selected Fish Species. In that document, were assigned tolerance values of I = intolerant (sensitive), M = intermediate, and T = tolerant. 2. USEPA Dave Peck's Fish Autecology table used in EMAP studies. If the two documents differed for a taxon, we used either the more sensitive category or the category for the "corn belt" region. NOTE: For further information regarding the Taxonomic Serial Number, TSN, please contact the point of contact below.
Purpose	Research Central Plains Center for BioAssessment, CPCB, at the Kansas Biological Survey at the University of Kansas.
Credit	When you use this data, we request that you acknowledge Central Plains Center for BioAssessment at the Kansas Biological Survey at the University of Kansas and any agency mentioned in the abstract, as appropriate.
Status	Ongoing: Data is continually being updated