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Saturday, August 8, 2020 | History

3 edition of Disturbance departure and fragmentation of natural systems in the interior Columbia basin found in the catalog.

Disturbance departure and fragmentation of natural systems in the interior Columbia basin

Wendel Hann

Disturbance departure and fragmentation of natural systems in the interior Columbia basin

by Wendel Hann

  • 91 Want to read
  • 37 Currently reading

Published by U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station in Portland, Or .
Written in English

    Places:
  • Columbia River Watershed.
    • Subjects:
    • Forest ecology -- Columbia River Watershed.,
    • Ecological disturbances -- Columbia River Watershed.,
    • Fragmented landscapes -- Columbia River Watershed.

    • Edition Notes

      StatementWendel J. Hann, Michael J. Wisdom, and Mary M. Rowland.
      SeriesInterior Columbia Basin Ecosystem Management Project--scientific assessment, Research paper PNW ;, RP-545, Research paper PNW ;, 545.
      ContributionsWisdom, Michael J., Rowland, Mary M., Pacific Northwest Research Station (Portland, Or.)
      Classifications
      LC ClassificationsSD11 .A45614 no. 545, QH104.5.C64 .A45614 no. 545
      The Physical Object
      Pagination19 p. :
      Number of Pages19
      ID Numbers
      Open LibraryOL3748942M
      LC Control Number2003431144

      The impacts of roads on natural systems (habitat fragmentation, interruption of natural flows of water, and disturbances to animals, plants, soils, and other resources) were not well understood or considered. Lack of awareness about these factors led to a largely antagonistic perception of the relationships between natural systems and road systems. Habitat fragmentation creates landscapes made of altered habitats or developed areas fundamentally different from those shaped by natural disturbances that species have adapted to over evolutionary time (Noss and Cooperrider in Meffe et al. ). Adverse effects of habitat fragmentation to both wildlife populations and species include.

      Natural Disturbances. Natural disturbances are one way an ecosystem can become unbalanced. As the name implies, natural disturbances have natural causes, such as weather, geological forces, or. A clear understanding of natural disturbance is a prerequisite for emulating natural disturbance within the forest landscape. In addition to adopting an acceptable set of terms and concepts related to disturbance, we must understand how human and the forest’s natural disturbance regimes function.

        1 Introduction The Interior Columbia Basin Ecosystem Management Project (ICBEMP) was chartered, in part, to develop an overall assessment of ecosystems within the interior Columbia River basin (hereafter, Basin) 1 The Basin is defined as that portion of the Columbia River basin within the United States and east of the crest of the Cascades, and. Forests in the Interior Northwest. p. Bull, Evelyn L. Catherine G. Parks, and T. R. Torgersen, , Trees and Logs Important to Wildlife in the Interior Columbia River Basin, USDA Forest Service, Pacific Northwest.


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Disturbance departure and fragmentation of natural systems in the interior Columbia basin by Wendel Hann Download PDF EPUB FB2

Disturbance departure and fragmentation of natural systems in the interior Columbia basin. Res. Pap. PNW-RP Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station.

19 p. We integrated landscape data from science assessments of the interior Columbia basin (basin) into. Disturbance Departure and Fragmentation of Natural Systems in the Interior Columbia Basin Article (PDF Available) in USDA Forest Service - Research Papers RMRS March with 40 Reads.

Get this from a library. Disturbance departure and fragmentation of natural systems in the interior Columbia basin. [Wendel Hann; Michael J Wisdom; Mary M Rowland; Pacific Northwest Research Station (Portland, Or.)] -- We integrated landscape data from science assessments of the interior Columbia basin (basin) into one variable that functions as a robust index of departure from native.

Disturbance departure and fragmentation of natural systems in the interior Columbia basin. Portland, Or.: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [].

United States Department of Agriculture Forest Service Pacific Northwest Research Station United States Department of the Interior Bureau of Land Management Research Paper PNW-RP March Disturbance Departure and Fragmentation of Natural Systems in the Interior Columbia Basin Wendel J.

Hann, Michael J. Wisdom, and Mary M. Rowland Authors Wendel J. Hann is a landscape Read: We integrated landscape data from science assessments of the interior Columbia basin (basin) into one variable that functions as a robust index of departure from native conditions.

This variable, referred to as the disturbance departure and fragmentation index, is a spatially explicit measure of landscape quality and resiliency. Reference: Disturbance Departure and Fragmentation of Natural Systems in the Interior Columbia Basin ICBEMP: Using an Ecoregion Assessment for Integrated Policy Analysis Citing article.

The Interior Columbia Basin Ecosystem Management Project (ICBEMP) was chartered, in part, to develop an overall assessment of ecosystems within the interior Columbia River basin (hereafter, Basin) 1 (), to determine their status and trend, and to describe the ecological risks and opportunities associated with federal management activities, see Haynes et al.

() for a. Disturbance departure and fragmentation of natural systems in the interior Columbia basin. Res. Pap. PNW-RP Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station.

19 p. We integrated landscape data from science assessments of the interior Columbia basin into one variable that functions as a. consequences relate to which process.

All of these have made the study of ―fragmentation‖ a ―panchreston‖. Lindenmayer & Fischer, ,p.2). To describe the disturbance, we should add that Natural disturbance occurs in a wide variety of biomes, affecting both animals and plants, thus disturbance deals with biotic and vitality.

Fragmentation also decreases the area of interior habitat (Figure ). Interior habitat is the area far enough from the edge to maintain communities of the original larger habitat. For example, when large tracts of sage/grassland are cleared and seeded into grasses or alfalfa, sage/grassland patch size and interior habitat are reduced.

One major interest in soil systems ecology is to maintain ecosystem functions. As soil is exposed to disturbances of different spatial configurations, identifying disturbance characteristics that still allow for maintaining functions is crucial.

In macro-ecology, the influence of fragmentation on ecosystems is continuously debated, especially in terms of extinction thresholds on the landscape. marily of oil and natural gas in this area. By contrast, we included southwestern Montana to incorporate sagebrush ecosys-tems and associated species omitted from the broad-scale assessment of the Interior Columbia Basin (Hann et al.Wisdom et al.

Southwestern Montana sup-ports some of the most extensive stands of. Disturbance departure and fragmentation of natural systems in the Interior Columbia Basin. Portland, OR: USDA and USDI Research Paper PNW-RP Google Scholar.

Forest Lands Assessments, Southern California Natural Community Conservation Planning, Interior Columbia Basin Ecosystem Management Project, and Sierra Nevada Ecosystem Management Project. This book examines the challenges inherent in the assessment of complex regional systems, and the role of science in the assessment process.

Known as bioregional. Ecosystems and landscapes depend on “natural” disturbances: • Natural disturbances perform critical functions (e.g., nutrient recycling) that maintain ecosystem/landscape structure and processes (e.g., initiating succession).

Many forest species, for example, persist only because of periodic disturbances. For example, without. Todd J. Hawbaker received his B.S. degree in animal ecology in from Iowa State University. After receiving his B.S., he worked for a couple of years burning and restoring tallgrass prairie in southwestern Minnesota and then pursued graduate school.

Landscape ecology has been defined in various ways partly because the word ‘landscape’ means quite different things to people with different scientific and cultural backgrounds.

Landscapes are spatial mosaics of interacting biophysical and socioeconomic components (Figure 1).Just as in other ecological disciplines, a spectrum of views exists as to the relative salience or prominence of the.

The greatest extent of alteration to natural fire regimes has occurred in forests that historically had an understory fire regime. These forests are ponderosa pine and some mixed conifer forest types in the East Cascades, Blue Mountains, and eastern (interior) portion of the Klamath Mountains ecoregions.

Human intervention, particularly fire. Abstract. As we stated in our introduction, this collection of chapters was intended to characterize human disturbance in relation to the fragmentation of American landscapes and to help integrate concepts from several disciplines including ecology, anthropology, theoretical ecology, and conservation biology, all of which are necessary in order to create a common and comprehensive framework.

allowing them to cut timber if doing so restores natural ecological conditions and fire regimes. FACT: Roadless Forests are not where fires are burning or likely to burn in Utah.

Out of o fires that occurred in Utah between and75% started outside of National Forest lands and less than 10% originated in Roadless Areas.Hann WJ, Wisdom MJ, Rowland MM (b) Disturbance departure and fragmentation of natural systems in the Interior Columbia Basin.

USDA Forest Service, Pacific Northwest Research Station, Research Paper PNW-RPto meaningfully assess the degree and impact of habitat fragmentation. • A Methodology for Analyzing Habitat Fragmentation and Wildlife Impacts.

We describe an analytical framework that uses geographic information systems (GIS) to aid in examining the direct, indirect, and cumulative impacts of proposed oil and gas development alternatives.