Filters: Tags: timber harvest (X) > Types: OGC WMS Layer (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Citation (5) Types Citation (5) Map Service (5) OGC WFS Layer (5) OGC WMS Service (5) Contacts Baker, William L. Beauvais, Gary P. Bernt Matheussen Bissonette, John A. Dennis P Lettenmaier More... Categories Publication (5) Tag Types Subject (4) Taxa Keyword (5) Landscape Patterns Category (5) Location Keyword (5) Context Keyword (5) Scale Keyword (5) Tag Schemes https://www.sciencebase.gov/vocab/category/Landscape%20Patterns%20Catalog/TaxaKeywords (4) https://www.sciencebase.gov/vocab/category/Landscape%20Patterns%20Catalog/LandscapePatternsCategory (5) https://www.sciencebase.gov/vocab/category/Landscape%20Patterns%20Catalog/LocationKeywords (5) https://www.sciencebase.gov/vocab/category/Landscape%20Patterns%20Catalog/ContextKeywords (5) https://www.sciencebase.gov/vocab/category/Landscape%20Patterns%20Catalog/ScaleKeywords (5) View Results as: JSON ATOM CSV

Effects of land cover change on streamflow in the interior Columbia River Basin (USA and Canada). Synopsis: This study analyzed the effects of vegetation change on hydrological fluctuations in the Columbia River basin over the last century using two land cover scenarios. The first scenario was a reconstruction of historical land cover vegetation, c. 1900. The second scenario was more recent land cover as estimated from remote sensing data for 1990. The results show that, hydrologically, the most important vegetation-related change has been a general tendency towards decreased vegetation maturity in the forested areas of the basin. This general trend represents a balance between the effects of logging and fire suppression. In those areas where forest maturity has been reduced as a result of logging, wintertime... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: British Columbia, Idaho, Land use configuration, Montana, Natural cover amount, All tags... Nevada, Oregon, Utah, Washington, Wyoming, evapotranspiration, forest cover, forests, logging, meso-regional, snow processes, stream flow, streamflow, timber harvest, vegetation change, water quantity, Fewer tags Watershed analysis of forest fragmentation by clearcuts and roads in a Wyoming forest Synopsis: Remotely sensed data and GIS were used to compare the effects of clear-cutting and road-building on the landscape pattern of the Bighorn National Forest, Wyoming. Landscape patterns were quantified for each of 12 watersheds on a series of four maps that differed only in the degree of clear-cutting and road density. Researchers analyzed several landscape pattern metrics for the landscape as a whole and for the lodgepole pine and spruce/fir cover classes across the four maps to determine the relative effects of clear-cutting and road building on the pattern of each watershed. At both the landscape and cover class scales, clear-cutting and road building resulted in increased fragmentation as represented... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Land use configuration, Landscape fragmentation, Natural cover amount, Wyoming, configuration, All tags... conifer forest, forest cover, landscape structure, pattern, roads, sub-regional, timber harvest, Fewer tags Distribution of bark beetle, Trypodendron lineatum in a harvested landscape Synopsis: This study monitored the response of a species of pine bark beetle, Trypodendron lineatum, to direct and indirect measures of habitat availability in a forest subjected to various levels of harvest intensities. Four stand types (conifer dominated, mixed, deciduous dominated, and deciduous dominated with conifer understory) were treated with four levels of harvest intensity (unharvested, 50%, 80%, and 90% harvested). Prior to harvest, the pine bark beetle was most abundant in stands with many host trees (conifer dominated stands). In the first and second summers after harvest, pine beetle abundance increased exponentially with percent spruce cover and the number of spruce stumps in the stand. Beetles were... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alberta, Land use configuration, Landscape fragmentation, Natural cover amount, Natural cover heterogeneity, All tags... Peace/Wabaska lowlands, Trypodendron lineatum, boreal forest, conifer forest, ecosystem intactness, mid-boreal uplands, percent cover, perforation, resource concentration hypothesis, sub-regional, terrestrial micro-fauna, timber harvest, Fewer tags The influence of forest fragmentation and landscape pattern on American martens. Conclusions: Marten capture rates were negatively correlated with increasing proximity of open areas and increasing extent of high-contrast edges. Forested landscapes were unsuitable for martens when the average nearest-neighbor distance between open, non-forested patches was <100m. Thresholds/Learnings: Synopsis: This study aimed to determine whether American marten abundance changed with incremental increases in habitat fragmentation caused by the combined effects of natural openings and timber clearcuts. Researchers evaluated differences in marten capture rates in 18 study sites with different levels of fragmentation. Martens appeared to respond negatively to low levels of habitat fragmentation, even with remaining... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: American martens, Land use configuration, Landscape fragmentation, Natural cover amount, Utah, All tags... edge, edge density, forest, forest cover, fragmentation, habitat fragmentation, local/site, proximity index, terrestrial mammals, timber harvest, Fewer tags Fragments are not islands: patch vs landscape perspectives on songbird presence and abundance in a harvested boreal forest. Conclusions: In response to logging, songbirds demonstrated “habitat compensation” by moving into different adjacent habitats across a fragmented landscape. Thresholds/Learnings: Synopsis: This study investigates the degree to which species respond differently to logging across different scales in Alberta’s boreal mixed-wood forests. Researchers tracked changes in the composition and abundance of songbirds at the patch-level and landscape level, finding significant variation between the two spatial scales. The results suggest that predictions of organism response based on the island biogeographic model are limited, and that—while responses varied across species—songbirds demonstrated “habitat compensation” by moving... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alberta, Land use configuration, Landscape fragmentation, Natural cover amount, birds, All tags... boreal forest, boreal forest, forest fragmentation, island biogeography, local/site, logging, logging, songbird abundance, spatial scale, timber harvest, Fewer tags