Skip to main content
USGS - science for a changing world
Advanced Search

Filters: Tags: Population and Habitat Evaluation/Projection (X)

170 results (14ms)   

Filters
Date Range
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
thumbnail
The North Atlantic Region of the United States and Canada boasts diverse habitats, from coasts to mountains, that support endemic and rare plant species. However, recent conservation actions and prioritization efforts in this region have neglected to include plants. We have conducted a conservation assessment for vascular plants that occur in the North Atlantic Landscape Conservation Cooperative. Using the best scientific data, we have developed a list of vascular plant species of concern for the region. We have refined the list with the input of Natural Heritage and other regional botanists and experts. For each species, we have determined regional conservation responsibility, developed regional ranks, updated...
Vernal or seasonal pools are small, temporary bodies of water that can serve as critical habitat for frogs, salamanders, reptiles, invertebrates, and other species. The first step in developing effective conservation strategies for vernal pools and associated wildlife species is to know where on the landscape these small wetlands exist. Although several several states and organizations in the Northeast region have initiated coordinated vernal pool mapping projects, this information has never been assembled in one place.Currently, the Vernal Pool Data Cooperative (VPDC) consists of over 60,000 vernal pool locations submitted by cooperators representing ten states and two Canadian provinces from Virginia to Quebec’s...
Determining species occurrence in ecosystems of high conservation concern is especially important for recommending habitat management techniques and identifying suitable restoration sites. We investigated (1) how stand- and landscape-scale attributes affect occupancy of priority bird species associated with longleaf pine (Pinus palutris) ecosystems, (2) if these priority birds can be used as indicator species for desired open pine forest structure, and (3) if these indicator species are positively correlated with greater avian richness. We compared priority bird occupancy among 12 stand types (habitat types) throughout the historic range of longleaf pine in Mississippi. We found stands resembling the historic longleaf...
Concurrent with the geographic expansion of the Southeast GAP land cover mapping will be a change detection effort that will provide updated land cover for portions of the Gulf Coastal Plains and Ozarks geography previously mapped based on 2001 imagery.
This report enumerates the methodology and results of mapping glades in a total of 173 7.5 minute quadrangle maps for the Ozark Highlands Section of northern Arkansas during the 11 month reporting period commencing June of 2014 and ending May 20, 2015. When combined with the previous mapping during 2013-2014, the grand totals for all glades mapped in Arkansas are 29,810 glade polygons totaling 44,107 acres in 221 7.5 minute quadrangle maps. The Ozark Highlands Ecological Section was completed.The latest resulting glade shapefile reflects assignment of rock substrates that correspond to the Missouri glade rock types. The author decided to assign rock types based on accumulated knowledge, actual field verifications,...
The balance between economic needs and natural resource conservation will become more tenuous in the future as a result of a myriad of environmental stressors. We propose a methodology that can help guide forest management practices whenever adequate species locational data and quality forest or land use data exist. More specifically, the results of this study can be used to evaluate alternative land and silviculture management scenarios in terms of creating or maintaining high-quality forest habitat for a specific species. We used data collected on radiotelemetered black bears from 1988 to 2015 to develop a regional habitat model throughout Louisiana and Arkansas using Mahalanobis distance (D2) statistic. We created...
thumbnail
Collection of 4 assessments for Upland Streams and Rivers. The Condition Index ranks stream segments according to how well they meet the Desired State described qualitatively and quantitatively in the draft Integrated Science Agenda (v4). From the Condition Index, 3 assessments are derived that rank opportunities for management and restoration of conditions included in the Condition Index – Watershed Land Use, Riparian Cover, and Stream Meander. Watershed Land Use management opportunities are based on the proportion of undisturbed land in the contributing (i.e. cumulative) watershed such that stream segments meeting the Desired State are considered Maintenance opportunities (values 5-6). Those that do not meet the...
thumbnail
The purpose of this data set is support resource allocation decisions (i.e. where to invest conservation effort) within the Gulf Coastal Plains and Ozarks Landscape Conservation Cooperative. The Protection Opportunity action map for the Upland Hardwood (Woodland) habitat system ranks pixels (250-m) based primarily on the Upland Hardwood (Woodland) Condition Index such that unprotected sites within healthy landscapes are ranked higher than those in very fragmented landscapes. Ranks are increased by information on existing partner interest (i.e. stated priority areas), elevated risk of change by 2060, and predicted occupancy of a majority of species identified in the GCPO LCC’s draft Integrated Science Agenda (v4)....
thumbnail
In large river ecosystems, the timing, extent, duration and frequency of floodplain inundation greatly affect the quality of fish and wildlife habitat and the supply of important ecosystem goods and services. Seasonal high flows provide connectivity from the river to the floodplain, and seasonal inundation of the floodplain governs ecosystem structure and function. River regulation and other forms of hydrologic alteration have altered the connectivity of many rivers with their adjacent floodplain – impacting the function of wetlands on the floodplain and in turn, impacting the mainstem river function. Conservation and management of remaining floodplain resources can be improved through a better understanding of...
thumbnail
This data represents an assessment of forest composition used in the ecological assessment of upland hardwood systems by the GCPO LCC. We used a combination of remote sensing products including 2011 National Land Cover Database (NLCD) forest classes and the 2011 MAV forest classification layer produced by the Lower Mississippi Valley Joint Venture to delineate patches of all forest types in the GCPO LCC. We used NLCD as the primary data source when assessing forests outside the GCPO LCC MAV subgeography, and the LMVJV forest classification as the primary data source for forest assessment within the MAV. NLCD was developed using 2011 Landsat TM imagery, with forest classes including only areas with trees exceeding...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: BIOSPHERE, BIOSPHERE, ECOSYSTEMS, ECOSYSTEMS, FORESTS, All tags...
This project will address species-habitat relationships for a priority aquatic system for the GCPO LCC, Mainstem Big Rivers. Specifically, the project will collect subsurface aquatic habitat data using side-scan sonar and high resolution bathymetry data in the Pearl River system of Louisiana. This project expands on current work ongoing in the Pearl River, and would extend habitat data collection for the purposes of making recommendations on restoration of aquatic habitat for species endpoints in this aquatic system. This project directly addresses landscape conservation design and will be used to inform Adaptation Strategies.
This project designed a monitoring program and protocol to detect the effects of climate change on tidal marsh bird population abundance and distribution. It is a companion to “Tidal Marsh Bird Population and Habitat Assessment for San Francisco Bay under Future Climate Change Conditions” and will build on its products, enabling evaluation of the long-term viability of four tidal-marsh bird species threatened by impacts of climate change: Clapper Rail, Black Rail, Common Yellowthroat, and Song Sparrow (three endemic subspecies: San Pablo, Suisun, and Alameda). Information is available through the California Avian Data Center. See also: http://data.prbo.org/apps/sfbslr/index.php?page=lcc-page
This project will use a Bayesian statistical framework to predict coastal erosion and inundation under a range of sea level rise scenarios. The Bayesian framework will also develop visualization products that will help natural resource managers anticipate sea level rise and adapt to the projected changes. Lastly, the frameworks will asses the potential impacts of sea level rise on coastal ecosystems and related wildlife resources.
This project integrates a reforestation decision support model for priority forest breeding birds and a restoration decision support tool for the federally-threatened Louisiana Black Bear. It was developed specifically to focus habitat restoration projects on frequently flooded agricultural lands within priority portions of the delta of Arkansas, Louisiana, and Mississippi, which were funded primarily by the Walton Family Foundation in 2010, 2011, 2012 and 2013.
thumbnail
Climate change vulnerability assessments are commonly used to identify species or populations at risk from global climate change, but few translate impact assessments to climate change adaptation actions. Furthermore, most climate change adaptation efforts emphasize where to implement management actions, whereas timing remains largely overlooked. The rate of modern climate change introduces urgency in evaluating whether delaying conservation actions compromises their efficacy for reaching important conservation targets. We evaluated the importance of multiple climate change adaptation strategies including timing of actions on preventing extinctions for a threatened climate-sensitive species, the Eastern Massasauga...
thumbnail
Habitat loss and fragmentation are widely recognized as among the most important threats to global biodiversity. New analytical approaches are providing improved ability to predict the effects of landscape change on population connectivity at vast spatial extents. This paper presents an analysis of population connectivity for three species of conservation concern [swift fox (Vulpes velox); lesser prairie-chicken (Tympanuchus pallidicinctus); massasuaga (Sistrurus catenatus)] across the American Great Plains region. We used factorial least-cost path and resistant kernel analyses to predict effects of landscape conditions on corridor network connectivity. Our predictions of population connectivity provide testable...
Categories: Data, Project, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2010, CO-01, CO-02, CO-03, CO-04, All tags...
This project maps glade complexes from aerial imagery at fine-scale resolution and ground truths the classified data. Phase I covers the Missouri Ozarks.


map background search result map search result map Climate change and connectivity: Assessing landscape and species vulnerability GCPO Inundation Frequency Mosaic Update of the Eastern Gulf Coastal Plains and Ozarks Land Cover Database to 2011 Using a LS2SRC Classification Approach Mean Forest Composition in 10 km Landscape (GCPO LCC) Upland Hardwood Woodland Protection Opportunities Upland Streams & Rivers Grouped Assessments Glades Habitat Mapping: Phase I Prioritization and Conservation Status of Rare Plants in the North Atlantic Region Vegetation dynamics related to climate and  land use in Puerto Rico and the US Virgin Islands Publication: Delaying conservation actions matters for species vulnerable to climate change Vegetation dynamics related to climate and  land use in Puerto Rico and the US Virgin Islands Climate change and connectivity: Assessing landscape and species vulnerability Upland Streams & Rivers Grouped Assessments Upland Hardwood Woodland Protection Opportunities Mean Forest Composition in 10 km Landscape (GCPO LCC) GCPO Inundation Frequency Mosaic Prioritization and Conservation Status of Rare Plants in the North Atlantic Region Publication: Delaying conservation actions matters for species vulnerable to climate change