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Author Burnett, Kelly M. ♦ Reeves, Gordon H. ♦ Clarke, Sharon E. ♦ Christiansen, Kelly R.
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Spatial Scale ♦ Stream Habitat ♦ Catchment Influence ♦ Arnericd Fishery Society Symposium ♦ American Fishery Society Comparing Riparian ♦ Landscape Characteristic ♦ Montane Landscape ♦ Physical Process ♦ Percent Area ♦ Riparian Spatial Scale ♦ Fuced-width Buffer ♦ Catchment Scale ♦ Many Landscape Characteristic ♦ Land Management ♦ Stream Segment ♦ Catchment Spatial Scale ♦ Mean Density ♦ 30-m Digital Elevation Data ♦ Sedimentary Rock Type ♦ Primary Land Use ♦ 30-m Satellite Imagery ♦ Large Wood ♦ Montane Basin ♦ Catchment Area ♦ Multiscale Analysis ♦ Mountainous Area ♦ Stream Habitat Feature ♦ Mean Maximum Depth
Abstract Abstract.-Multiscale analysis of relationships with landscape characteristics can help iden-tify areas and physical processes that affect stream habitats, and thus suggest where and how land management is likely to influence these habitats. Such analysis is rare for mountainous areas where forestry is the primary land use. Consequently, we examined relationships in a forested, montane basin between stream habitat features and landscape characteristics that were summarized at five spatial scales (three riparian and two catchment scales). Spatial scales varied in the area encompassed upstream and upslope of surveyed stream segments and, presumably, in physical processes. For many landscape characteristics, riparian spatial scales, approximated by fuced-width buffers, could be differentiated from catchment spatial scales using forest cover from 30-m satellite imagery and 30-m digital elevation data. In regression with landscape characteristics, more variation in the mean maximum depth and volume of pools was explained by catchment area than by any other landscape characteristic summarized at any spatial scale. In contrast, at each spatial scale except the catchment, varia-tion in the mean density of large wood in pools was positively related to percent area in older forests and negatively related to percent area in sedimentary rock types. The regres-
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study