Author: United States. Bureau of Land Management. Dillon Field Office
Publisher:
ISBN:
Category : Land use
Languages : en
Pages : 55

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Author: Monica Brelsford
Publisher:
ISBN:
Category : Watershed management
Languages : en
Pages : 17

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The Governor's Upper Yellowstone River Task Force was interested in land use changes over time as a gauge of cumulative effects for the Upper Yellowstone River basin. This project is a follow up to the work of Harrison and Potter (2001) that used satellite imagery to assess land cover change. Due to quality of imagery from the 1970s relative to imagery from the 1990s, they were unable to map the watershed at a level of detail required to assess land use change that occurred along the Upper Yellowstone River. The goal of this study was to map portions of the Upper Yellowstone River basin, focusing on private and public lands adjacent to the river, as well as map into the foothills for the years 1948, 1979, and 1998. -- Introduction.

Author: Richard T. Di Giulio
Publisher: CRC Press
ISBN: 0203647297
Category : Science
Languages : en
Pages : 1102

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When looking for a book on fish toxicology, you might find one that discusses the biochemical and molecular aspects, or one that focuses aquatic toxicology in general. You can find resources that cover human and animal toxicology or ecotoxicology in general, but no up-to-date, comprehensive monograph devoted to the effects of chemical pollution on

Author:
Publisher:
ISBN:
Category : Habitat (Ecology)
Languages : en
Pages : 83

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We used three basic indicators of watershed integrity: hydrologic function, water quality, and upland wildlife habitat to evaluate potential land cover changes within the upper Yellowstone River watershed. A satellite-based land cover classification was completed for 2,474,141 acres within the Yellowstone River basin (10070001-Yellowstone Headwaters and 10070002-Upper Yellowstone 4th code subbasins) using Landsat satellite imagery dated July 13, 1999, and July 12, 1985. Differences in spectral attributes between 1999 Enhanced Thematic Mapper (ETM+) and 1985 Thematic Mapper (TM) scenes, in addition to excessive cloud cover on the 1985 scenes prevented accurate comparison of land cover change over time. The land cover assessment was performed solely on the 1999 classification. Post-stratification accuracy was 72.2 percent. A Geographic Information System (GIS) analyzed the distribution and intersection of key resource theme attributes (soil, climate, ownership, topography, census, and important wildlife habitat) with the 1999 land cover classification. Results indicated that the very diverse landscape was largely composed of federally managed, coniferous forest, and shrub/grasslands. Urban or Developed and Agricultural Land-Irrigated land cover together accounted for less than 2 percent of the watershed area. Broadleaf Riparian represented the next to least in extent of the 15 cover classifications identified. Differences in land cover characteristics were measured between 5th code hydrologic units (HUCs). Low/Moderate Cover Grasslands, Agricultural Lands/Irrigated, Urban or Developed, and Broadleaf Riparian cover categories increased in relative composition in a downstream direction and in proximity to the river corridor. Low/Moderate Cover Grasslands surprisingly were the most prevalent land cover category within the 1/2 mile wide corridor bisected by the river. Evaluations of land cover related to hydrologic function, water quality characteristics, and upland wildlife habitat are also presented and discussed. Although land cover composition at the watershed scale appears to be relatively uninfluenced by human activity at present, we recommend periodic reassessment of land cover at the watershed and stream corridor scale in conjunction with monitoring common biotic indicators to track and evaluate the effect of land cover trends over time on stream and watershed function.

Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 1016

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 482

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Author: United States. Bureau of Land Management. Dillon Field Office
Publisher:
ISBN:
Category : Horse Prairie (Mont.)
Languages : en
Pages :

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Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 582

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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 380

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Author: David L. Rosgen
Publisher:
ISBN: 9780979130816
Category : Geomorphology
Languages : en
Pages :

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