| Main Title |
IBI: A Quantitative, Easily Communicated Assessment of the Health and Complexity of Entire Fish Communities. |
| Author |
Hughes., R. M. ;
|
| CORP Author |
NSI Technology Services Corp., Corvallis, OR.;Corvallis Environmental Research Lab., OR. |
| Publisher |
c1990 |
| Year Published |
1990 |
| Report Number |
EPA-068-C8-0006; EPA/600/D-90/194; |
| Stock Number |
PB91-136614 |
| Additional Subjects |
Assessments ;
Health ;
Fishes ;
Abundance ;
Populations ;
Scoring ;
Standards ;
Sites ;
Reliability ;
Water resources ;
Ecosystems ;
Index of Biotic Integrity ;
Fish assemblages
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB91-136614 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
5p |
| Abstract |
Data on species and their abundances be made understandable to the public and to water resource regulators while retaining the ecological information that is meaningful to biologists. A recent attempt to communicate such information is the Index of Biotic Integrity, or IBI (Karr 1981; Karr et al. 1986). The IBI is a means of quantifying ichthyologists' judgments of the relative quality of a fish assemblage. It is based on a sample of the entire fish assemblage, not just game fish. The index incorporates professional judgment of fish assemblage health in 12 metrics and their scoring criteria, which are based on regional ideals. These regional standards are determined from historical data and data from minimally affected sites that characterize the region. The individual metrics differ in their range of sensitivity for detecting perturbations, and a degree of redundance is built into the IBI because no single metric can reliably indicate integrity. |
| Supplementary Notes |
Pub. in Biological Report, v90 n5 p26-28 1990. Sponsored by Corvallis Environmental Research Lab., OR. |
| NTIS Title Notes |
Symposium paper. |
| Category Codes |
98F; 57Z |
| NTIS Prices |
PC A01/MF A01 |
| Primary Description |
600/02 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
105325050 |
| Origin |
NTIS |
| Type |
CAT |
