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Fish assemblage Salmonids Cyprinids Benthic fishes Coldwater fishes

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Presentation on theme: "Fish assemblage Salmonids Cyprinids Benthic fishes Coldwater fishes"— Presentation transcript:

1 Fish assemblage Salmonids Cyprinids Benthic fishes Coldwater fishes
Catostomids Benthic fishes Coldwater fishes

2 Scaling of fish assemblages and habitat relationships

3 Patchiness in fish distribution (WARM stream)

4 COOL stream

5 COLD stream

6 Spatial variability of juvenile chinook in a WARM stream
Middle Fork John Day River

7 COOL stream North Fork John Day River

8 COLD stream Wenaha River

9 Multivariate analysis of community structure in a WARM stream
Middle Fork John Day River

10 COOL stream North Fork John Day River

11 COLD stream Wenaha River

12 Within-stream variability
North Fork John Day River Downstream section

13 Scale-dependent relationships
Effects of spatial extent on ecological relationships (Nekola and Wagner 2001) Thermal crossover between warm- and coldwater species 20-22°C

14 Torgersen, C. E. , C. V. Baxter, H. W. Li, and B. A. McIntosh. 2006
Torgersen, C. E., C. V. Baxter, H. W. Li, and B. A. McIntosh Landscape influences on longitudinal patterns of river fishes: Spatially continuous analysis of fish-habitat relationships. Pages in R. M. Hughes, L. Wang, and P. W. Seelbach, editors. Landscape influences on stream habitats and biological assemblages. American Fisheries Society, Bethesda, Maryland.


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