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This dataset depicts indices of forest fragmentation within the U.S. Great Lakes region. This dataset can help inform prioritization of landscapes for conservation through identification of more intact forested areas. Forest fragmentation was assessed using information derived from the National Land Cover Dataset (NLCD) and USGS 1:100,000 scale roads. Within each forested ecoregion in the World Wildlife Fund ecoregions dataset, landscape units (land units) were defined using U.S. Census Bureau TIGER highway networks. Land units were blocks of forested land bounded by highways and were required to be at least 2,000 hectares in size. Land units smaller than 2,000 hectares or areas within urban areas were excluded...
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This dataset depicts forest fragmentation in central Africa by roads. This dataset includes roads. This study, or Pilot Analysis of Global Ecosystems (PAGE), examines forest ecosystems of the world using a large collection of spatial and temporal data. This study analyzes datasets at the global, national, and subnational levels, and draws on published and unpublished scientific studies. It develops selected indicators that describe the condition of the world's forests, where condition is defined as the current and future capacity of forests to provide the full range of goods and services that humans need and consume.
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This study focuses on Endangered Forests and the biological components of the High Conservation Value Forest concept. High Conservation Value and Endangered Forests are identified and mapped based on several ecological components that are globally, regionally, or locally important. These ecological components can be landscape level features or biodiversity related. These components sometimes overlap and at other times are mutually exclusive. Any one component can be enough to identify a specific forest area as a High Conservation Value or Endangered Forest depending on the circumstance, but a full assessment using readily available spatial data of all of the ecological components is warranted before a forest is...
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This dataset depicts indices of forest fragmentation within the U.S. Northeast region. This dataset can help inform prioritization of landscapes for conservation through identification of more intact forested areas. Forest fragmentation was assessed using information derived from the National Land Cover Dataset (NLCD) and USGS 1:100,000 scale roads. Within each forested ecoregion in the World Wildlife Fund ecoregions dataset, landscape units (land units) were defined using U.S. Census Bureau TIGER highway networks. Land units were blocks of forested land bounded by highways and were required to be at least 2,000 hectares in size. Land units smaller than 2,000 hectares or areas within urban areas were excluded from...
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This dataset depicts indices of forest fragmentation within the western U.S. This dataset can help inform prioritization of landscapes for conservation through identification of more intact forested areas. Forest fragmentation was assessed using information derived from the National Land Cover Dataset (NLCD) and USGS 1:100,000 scale roads. Within each forested ecoregion in the World Wildlife Fund ecoregions dataset, landscape units (land units) were defined using U.S. Census Bureau TIGER highway networks. Land units were blocks of forested land bounded by highways and were required to be at least 2,000 hectares in size. Land units smaller than 2,000 hectares or areas within urban areas were excluded from this analysis....
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This map service presents spatial information about the Coastal Change Analysis Program (C-CAP) land cover data in the Web Mercator projection. The service was developed as part of the National Oceanic and Atmospheric Administration (NOAA) Coastal Services Center’s C-CAP Land Cover Atlas. NOAA provides the information “as-is” and shall incur no responsibility or liability as to the completeness or accuracy of this information. NOAA assumes no responsibility arising from the use of this information. For additional information, please contact the NOAA Coastal Services Center (http://csc.noaa.gov/contact/contactform.htm). These spatial layers represent forest fragmentation categories (i.e., patch forest, perforated...
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These value-added, raster-based maps of forest fragmentation were produced using Coastal Change Analysis Program (C-CAP) regional land cover data. The analysis was performed using the Landscape Fragmentation Tool from the University of Connecticut’s Center for Land Use Education and Research (CLEAR). Intact forests are ecologically important but are becoming increasingly susceptible to development pressures and conversion. Forest fragmentation is the breaking up of large contiguous forest tracts into smaller, or less contiguous, areas. It is important to look at not only the net change in forest area, but also the spatial pattern of the observed changes. In these data, forest fragmentation is classified into four...
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Fragmentation, which is often defined as the breaking apart of habitat (Fleishman and Mac Nally, 2007), represents an important aspect of the landscape spatial pattern and can greatly affect biodiversity. Specifically, forest fragmentation can be characterized by the amount and spatial configuration of forests (Wulder et al., 2009). This dataset comprises of six forest fragmentation metrics, selected from among 90 plus metrics (Wulder et al., 2008), suitable for representing forest fragmentation over large areas: (i) Edge density (m/ha), (ii) Mean patch size [ha], (iii) Number of forest patches, (iv) Proportion of forest patches [%], (v) Relative area [%], (vi) Standard deviation of patch size [ha]. These metrics...
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This dataset is a fine resolution (1:24,000 scale) analysis of New England and serves as a companion to the original forest intactness analysis (Heilman et al. 2002), which was uploaded to Data Basin as an ecoregional series of U.S. Forest Fragmentation datasets. This analysis was done using Landsat TM based MRLC (Multi-Resolution Landscape Characteristics) data and 1:24,000 scale road data sets. Forest intactness was mapped within the landunits selected at 1:100,000 scale as having high intactness values (regional landunit score = 20-25). For each landunit, road density was calculated as well as a suite of class and landscape level fragmentation metrics using FRAGSTATS, a spatial analysis software program. For...
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Conclusions: Although there was not a detectable decrease in bird communitiy species richness resulting from experimental forest fragmentation, community structure was altered, and maintaining connections between fragments significantly mitigated these effects. Thresholds/Learnings: Synopsis: This study examined the effects of forest fragmentation on the richness, diversity, turnover, and abundance of breeding bird communities in old boreal mixed-wood forest by creating experimental forest fragments of 1, 10, 40, and 100 ha. Connected fragments were linked by 100 m wide buffer strips. The study detected no significant change in species richness as a result of forest harvesting, except in the 1 ha connected fragments...
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Synopsis: This study attempts to build a forest fragmentation database for the conterminous United States by utilizing high-resolution NLCD data, roads, and a series of fragmentation indices that quantify forest landscape patterns. The paper outlines a methodology for assessing forest fragmentation and provides a comprehensive data set to be used as a base for further investigation at smaller scales. Conclusions: A forest fragmentation database for the conterminous United States was built to quantify forest landscape patterns nationwide. The paper outlines a methodology for assessing forest fragmentation and provides a comprehensive data set to be used as a base for further investigation at smaller scales. Thresholds/Learnings:...
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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...


    map background search result map search result map Coastal Change Analysis Program Forest Fragmentation, 1996, 2001, and 2006 Are boreal birds resilient to forest fragmentation? An experimental study of short-term community responses. Fragments are not islands: patch vs landscape perspectives on songbird presence and abundance in a harvested boreal forest. Forest fragmentation of the coterminous United States: assessing forest intactness through road density and spatial characteristics. Forest_Fragmentation_06 Forest Fragmentation Results from the Alberta Foothills Decision Support Model Canadian Boreal Forest Fragmentation U.S. Forest Fragmentation - Northeast Northeast U.S. Forest Intactness U.S. Forest Fragmentation - Great Lakes Region Central Africa: Forest Fragmentation by Roads (including roads) Forest Fragmentation in the western USA Are boreal birds resilient to forest fragmentation? An experimental study of short-term community responses. Fragments are not islands: patch vs landscape perspectives on songbird presence and abundance in a harvested boreal forest. Northeast U.S. Forest Intactness Forest Fragmentation Results from the Alberta Foothills Decision Support Model U.S. Forest Fragmentation - Northeast Coastal Change Analysis Program Forest Fragmentation, 1996, 2001, and 2006 U.S. Forest Fragmentation - Great Lakes Region Forest Fragmentation in the western USA Central Africa: Forest Fragmentation by Roads (including roads) Forest fragmentation of the coterminous United States: assessing forest intactness through road density and spatial characteristics. Forest_Fragmentation_06 Canadian Boreal Forest Fragmentation