MetaData for AI - Stream Habitat Conditions on Industrial Forest Lands in Coastal Oregon
AI - Stream Habitat Conditions on Industrial Forest Lands in Coastal Oregon
Identification Information
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Citation
- Originator: Barry A. Thom, Kim K. Jones
- Publish Date: January 20, 2000
- Online Link:
http://nrimp.dfw.state.or.us/crl/Reports/AI/ofic9899.pdf
- BPA Project #:
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Contact Information
- Agency: Oregon Department of Fish and Wildlife
- Name: Kim Jones
- Job Position: Project Leader
- Telephone: (541)757-4263 x260
- E-Mail Address: kim.jones@oregonstate.edu
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Description
- Abstract: In the summer of 1998 and 1999, watersheds in western Oregon were randomly sampled for stream habitat conditions. Sites were selected using a random tessellation stratified design. Oregon Department of Fish and Wildlife Aquatic Inventories methods were used to quantify indicators of sediment supply and quality, riparian forest connectivity and health, habitat structure, in-stream complexity, and presence of salmonid species. As part of the overall sampling 47 sites in 1998 and 70 sites in 1999 were sampled on industrial forest lands. Of these sites 13 were sampled both in 1998 and 1999, and 37 sites were sampled for fish presence/absence. Approximately 44% of the sites sampled for habitat were within the range of anadromous salmonids.
Upstream catchment area and gradient were the two major factors driving the overall patterns of habitat variables. Secondarily, land ownership and geology were other factors correlated with the habitat variables analyzed. The private non-industrial land ownership type was characterized by slightly higher fine sediment levels, lower wood volumes and number of key wood pieces, lower densities of deep pools, and lower levels of stream shading. State and industrial forest lands show
moderate wood levels in the stream channel, although they show low levels of conifers in riparian zones. The sedimentary geologic type was characterized by higher levels of fine sediments in riffle units. Twelve, high quality, unconstrained stream reaches occurred in the 1998 and 1999 habitat sample on Industrial forest lands.
Conditions on industrial forest lands in 1998-1999 were compared to conditions in 1993-1994 to detect any potential change over the five-year period. Three different datasets were analyzed. No significant changes in aquatic habitat or riparian conditions were detected.
Electrofishing surveys were conducted at 37 sites outside or the expected range of coho salmon to determine fish presence/absence. Salmonid species were present at 19 of the sites that were electrofished.
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- Purpose:
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- Time Period of Content: 1998-1999
- Geographic Extent: Western Oregon
- Status: Final
- Use Constraints:
- Format: PDF File
Data Quality Information
- Lineage-Source:
Data Information
- No data information was supplied.
Entity and Attribute Information
- Attributes Description:
Is a physical copy maintained for reference at Headquarters?
No
Files
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ofic9899.pdf
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8/8/2006 10:16:11 AM |
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