| Abstract: | 1. The relationships between three habitat scales and lotic invertebrate species composition were investigated for the 15 540 km2 Yakima River basin in south-central Washington, U.S.A. 2. The three spatial scales were sample (the sampled riffle), reach (a length of ten-twenty stream widths) and segment (a length of stream of nearly uniform slope and valley form having no change in stream order). 3. Physical variables were highly correlated between scales and expressed a relationship between altitude, basin form and small-scale physical structure. 4. Multiple discriminant function analyses indicated that segment- and reach-scale variables discriminated among species-defined groups better than sample-scale variables. 5. Species composition varied along a complex altitudinal gradient of changing basin form and resultant land use. 6. There was no clear relationship between species richness and altitude on a site basis. However, when viewed at the basin scale, maximum richness was observed at the transition between montane and valley sites. |
| Genre: | Article |
| ProdID: | 70019304 |
| Citation Author: | Carter, J. L.; Fend, S. V.; Kennelly, S. S. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 124 |
| Citation Issue: | 1 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Freshwater Biology |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 16 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | The relationships among three habitat scales and stream benthic invertebrate community structure; 1996; Article; Journal; Freshwater Biology; Carter, J. L.; Fend, S. V.; Kennelly, S. S. |
| Citation Start Page: | 109 |
| Citation Volume: | 35 |
| Citation Year: | 1996 |
| Type: | citation/reference |
| Text: | The relationships among three habitat scales and stream benthic invertebrate community structure; 1996; Article; Journal; Freshwater Biology; Carter, J. L.; Fend, S. V.; Kennelly, S. S. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1996 00:00 -0600 |
| Publisher: | |
