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Nitrogen (N) and phosphorus (P)-related impaired waters for which a TMDL has been developed (Cycle Year 2010) within the Mississippi River Basin. For purposes of identifying N/P-related TMDLs, EPA used the following national impairment categories: algal growth, ammonia, noxious aquatic plants, nutrients, organic enrichment/oxygen depletion. Source : EPA Nitrogen and Phosphorus Pollution Data Downloads <http://gispub2.epa.gov/NPDAT/DataDownloads.html> Downloaded June 2014.
* 1 Patch structural complexity affects local species richness and population densities. Anthropogenic disturbance may alter complexity and heterogeneity, resulting in changes in community structure. Most studies in this area have dealt with human-induced habitat degradation. We investigated a converse situation, in which anthropogenic activity increases productivity and complexity of an arid habitat. * 2 Recently, large areas in the northern Negev Desert have been altered: a series of contour catchments was constructed to accumulate run-off to support planted trees. We examined the effect of patch alteration by focusing on the lizard assemblage in the planted plots. Seven pairs of plots were established, one plot...
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Conclusions: Summarizes findings from a review of literature intended to identify critical thresholds for conservation based in empirical studies of landscape fragmentation. Presents a conceptual overview of landscape fragmentation and habitat loss, as well as guidelines and thresholds relating to landscape indicators such as patch size, habitat amount, edge effects, riparian buffers, and habitat connectivity. Thresholds/Learnings: Many. See Kennedy et al. 2003. Synopsis: This report summarizes findings from a review of literature intended to identify critical thresholds for conservation based in empirical studies of landscape fragmentation. In presenting a conceptual overview of landscape fragmentation and habitat...
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Ducks Unlimited CPC (Conservation Program Committee) approved focus areas for conservation easements and land acquisitions within the Mississippi River Basin. These regions are very important to DU's habitat restoration and enhancement.Focus areas are designated by DU Board for acquiring conservation easements and land acquisitions without going through three board committees for approval. Only DU's internal board reviews any new easements or acquisitions in focus areas.
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Areas in which Ducks Unlimited wants to do the bulk of their conservation work - restorations, enhancements, and protection (acquisitions/easements) within the Mississippi River Basin. The data was last updated on May 10, 2013. The Platte River LCP boundary was changed to include Big Thompson Ponds SWA.
Climate change is a global phenomenon, but natural selection occurs within landscapes. Many global analyses predict how climate change will shape behavior and physiology, but few incorporate information from the landscape scales at which animals actually respond to selective pressure. We compared cold-water fish (redband trout Oncorhynchus mykiss newberrii) from neighboring habitats in a naturally warm, recently fragmented basin to understand how different responses to warming may arise from landscape constraints. Trout in warm, hydrologically connected Upper Klamath Lake fled summer temperatures and sought refuge in cool tributaries, while trout in an equally warm but fragmented reach of the Klamath River endured...
Aim Using survey data for North American birds, we assess how well historical patterns of species richness are explained by stacked species distribution models and macroecological models. We then describe the degree to which projections of future species richness differ, employing both modelling approaches across multiple emissions scenarios. Location USA and Canada. Methods We use Audubon Christmas Bird Count and North American Breeding Bird Survey data to estimate current and future species richness of birds using two distinct approaches. In the first, we model richness by stacking predictions from individual species distribution models. In the second, we model richness directly, ignoring the contributions of...
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This digital version of the original vegetation cover map can be used to identify regional changes in land cover since the time when the state was first surveyed. This data is not intended for landscape-scale analysis.This is a polygon shapefile derived from a 1:500,000-scale map showing the original, pre-settlement vegetation cover in Wisconsin. The original vegetation cover data was digitized from a 1976 map created from land survey notes written in the mid-1800s when Wisconsin was first surveyed. Linework representing lakes and other hydrographic areas in other data sets were subsequently merged with the original vegetation cover data set to more closely match the source map.
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Ecosystem engineering by animals can create new habitats and increase the heterogeneity of the habitat mosaic that in turn can increase plant and animal diversity. Prairie dogs in North America alter both the above- and below-ground structure of the landscape and create novel habitats in grassland ecosystems. The ground-dwelling arthropod community associated with Gunnison's prairie dog modified habitats is compositionally different from that found in the surrounding grassland. Individual arthropod families and species have different distributions in both active prairie dog towns and inactive towns, compared to unmodified grasslands. These different responses to ecosystem engineering increase beta (between-habitat)...
This report, released by the Energy andBiodiversity Initiative (EBI), is the resultof a collaborative effort by representa-tives of the nine member companiesand conservation organizations of theInitiative. The views expressed hereindo not necessarily represent the viewsof every EBI member.EBI members recognize that there is a continuing public debate aroundbiodiversity conservation and oil andgas operations. Although EBI was notintended to resolve all the issues in-volved in this debate, we believe theEBI products and process will make a significant contribution to con-structive dialogue to accompany thatdebate. We welcome your commentsand feedback on this document or any other EBI products.
This report, released by the Energy andBiodiversity Initiative (EBI), is the resultof a collaborative effort by representa-tives of the nine member companiesand conservation organizations of theInitiative. The views expressed hereindo not necessarily represent the viewsof every EBI member.EBI members recognize that there is a continuing public debate aroundbiodiversity conservation and oil andgas operations. Although EBI was notintended to resolve all the issues in-volved in this debate, we believe theEBI products and process will make a significant contribution to con-structive dialogue to accompany thatdebate. We welcome your commentsand feedback on this document or any other EBI products.
The Enqu~te-Commission on 'Preventive Measures to Protect the Earth's Atmosphere' of the German Bundestag has proposed a 30% reduction target for C02 emissions by the year 2005 for Germany, of 20-25% for the European Community and 5% worldwide, which would allow developing countries an increase in C02 emissions of 50%. The Enqu~te-Commission expects that one half of this reduction target could be achieved by more efficient energy-use (-17% on top of trend energy savings) and by modifications in consumer behaviour (-5%). This ambitious vision is not inconsistent with the available technical and theoretical potential for rational energy-use. The German Cabinet has taken up the issue and voted for a 25% reduction in...
A regularly raised concern for wind farms is the number of species and rate of bird and bat collisions with turbines. Australian regulators require, at some operating wind farms, the monitoring of bird and bat collisions. Although monitoring is becoming more commonplace, the area recommended for searching beneath turbines is inconsistent, with many guidelines both in Australia and overseas being based on conjecture rather than empirical evidence. This has the potential to bias survey results, reduce confidence in the data collected, and preclude meaningful comparisons between sites. By having a measure of the range of the fall zone of a bird or bat, a survey can be designed that ensures that an adequate area is...
Land used for agricultural production comprises a significant portion of the United States (US) land area and is increasingly the focus of conservation efforts. These efforts include programs to protect and improve the quality of water, soil, and wildlife habitat. Government conservation efforts in the US focus on voluntary conservation programs. As the success of these programs depends on the participation of agricultural producers, much research has examined factors influencing producer decision-making. This research has provided important insights regarding micro and meso-scale factors influencing participation, but has tended to overlook macro-scale political and economic factors that increasingly shape production...
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NRCS Common Resource Areas (CRA), version 1.2. A Common Resource Area is defined as a geographical area where resource concerns, problems, or treatment needs are similar. It is considered a subdivision of an existing Major Land Resource Area (MLRA) map delineation or polygon. Landscape conditions, soil, climate, human considerations, and other natural resource information are used to determine the geographic boundaries of a CRA. Features have been conflated with land cover attributes pertinent to the MRB/GHI e.g. cropland, forest, prairie, etc.
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The Greater Sage Grouse Focal Area represents an area of interest pertaining to the greater sage grouse under the U.S. Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) Working Lands for Wildlife (WLFW) Wildlife Habitat Incentive Program (WHIP).Working Lands for Wildlife is a partnership between NRCS and the U.S. Fish and Wildlife Service (FWS) to use agency technical expertise and financial assistance from the Wildlife Habitat Incentive Program to combat the decline of seven specific wildlife species whose decline can be reversed and will benefit other species with similar habitat needs. The WLFW project will target species whose decline can be reversed and will benefit other species...
map background search result map search result map Conservation of prairie dog ecosystem engineering may support arthropod beta and gamma diversity Conservation Thresholds for Land Use Planners Common Resource Areas (MRB) Major River (ERF1v2) - Mississippi River Basin Greater Sage Grouse Focal Area (WLFW) Ducks Unlimited - Land Acquisition/Easement Focus Areas Ducks Unlimited - Landscape Conservation Priority Areas Kentucky - Tier 1 Conservation Areas Reaches with Nutrient TMDLs (2010) Missouri - Quail Focus Areas Wisconsin - Original Vegetation Conservation of prairie dog ecosystem engineering may support arthropod beta and gamma diversity Kentucky - Tier 1 Conservation Areas Missouri - Quail Focus Areas Wisconsin - Original Vegetation Greater Sage Grouse Focal Area (WLFW) Ducks Unlimited - Land Acquisition/Easement Focus Areas Reaches with Nutrient TMDLs (2010) Major River (ERF1v2) - Mississippi River Basin Common Resource Areas (MRB) Ducks Unlimited - Landscape Conservation Priority Areas Conservation Thresholds for Land Use Planners