Skip to main content
Advanced Search

Filters: Tags: Ecosystems (X) > Date Range: {"choice":"year"} (X)

126 results (59ms)   

Filters
Date Types (for Date Range)
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
thumbnail
This dataset provides bi-monthly data on seed biomass collected in shallow water habitats across the fresh to saline gradient at coastal sites in Barataria Bay, Louisiana. This project was co-funded by the Gulf Coast Prairie and the Gulf Coastal Plains and Ozarks Landscape Conservation Cooperatives and the South Central Climate Adaptation Science Center. An alternate reference to this product can be found here: https://www.sciencebase.gov/catalog/item/5a78c158e4b00f54eb1e84a6.
thumbnail
Advancing our mechanistic understanding of ecosystem responses to climate change is critical to improve ecological theories, develop predictive models to simulate ecosystem processes, and inform sound policies to manage ecosystems and human activities. Manipulation of temperature in the field, or the “ecosystem warming experiment,” has proved to be a powerful tool to understand ecosystem responses to changes in temperature. No comprehensive synthesis has been conducted since the last one more than 10 years ago. A new synthetic analysis is critically needed to advance our understanding of ecosystem responses to warming, to highlight experimental artifacts and appropriate interpretations, and to guide development...
thumbnail
Tropical forests contain > 50% of the world’s known species (Heywood 1995), 55% of global forest biomass (Pan et al. 2011), and exchange more carbon (C), water and energy with the atmosphere than any other ecosystem type (e.g., Saugier et al. 2001). Despite their importance, there is more uncertainty associated with predictions of how tropical forests will respond to warming than for any other biome (Randerson et al. 2009). This uncertainty is of global concern due to the large quantity of C cycled by these forests and the high potential for biodiversity loss. Given the importance of tropical forests, decision makers and land managers around the globe need increased predictive capacity regarding how tropical forests...
thumbnail
This cultural resource indicator is an index of sites on the National Register of Historic Places surrounded by limited urban development. It identifies significant historic places that remain connected to their context in the natural world.Reason for SelectionLow-urban historic landscapes indicate significant cultural landscapes whose cultural context has been less impacted by urban growth. Cultural landscapes are “properties [that] represent the combined works of nature and of man” (UNESCO 2012). Reductions in natural habitat within these cultural landscapes reduce their overall historic and cultural value.Input DataThe National Register of Historic Places reflects what Americans value in their historic built...
thumbnail
This part of DS 781 presents data for the acoustic-backscatter map of Offshore of Aptos map area, California. Backscatter data are provided as two separate grids depending on mapping system and processing method. This metadata file refers to the data included in "BackscatterB_EM300_OffshoreAptos.zip," which is accessible from https://doi.org/10.5066/F7K35RQB. These data accompany the pamphlet and map sheets of Cochrane, G.R., Johnson, S.Y., Dartnell, P., Greene, H.G., Erdey, M.D, Dieter, B.E., Golden, N.E., Hartwell, S.R., Ritchie, A.C., Kvitek, r.G., Maier, K.L., Endris, C.A., Davenport, C.W., Watt, J.T., Sliter, R.W., Finlayson, D.P., and Krigsman, L.M., (G.R. Cochrane and S.A. Cochran, eds.), 2016, California...
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Acoustic Reflectivity, Aptos, Backscatter, Bathymetry, CMHRP, All tags...
thumbnail
This indicator measures the number of aquatic species within each watershed that are listed as G1 (globally critically imperiled), G2 (globally imperiled), or threatened/endangered under the U.S. Endangered Species Act.Reason for SelectionThis indicator identifies areas with abundant rare and endemic aquatic species that would benefit from conservation actions. It captures patterns of rare and endemic species diversity not well-represented by other freshwater indicators.Input Data– Estimated Floodplain Map of the Conterminous U.S. from the EPA EnviroAtlas (see this factsheet for more information)– [National Hydrography Dataset Plus Version 2] (http://www.horizon-systems.com/NHDPlus/NHDPlusV2_home.php) (NHD Plus...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS, ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS, ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS, ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS, BIOSPHERE, All tags...
thumbnail
This indicator is a continuous index of highly productive areas for birds that feed exclusively or mainly at sea. It uses seasonal predictions of relative abundance for sixteen species of marine birds. Note: This indicator is at a 200 m resolution, which is coarser than other indicators used in the 2020 Blueprint.Reason for SelectionMarine birds help identify key areas of ocean productivity and overall ocean health, are regularly monitored, and resonate with a variety of audiences. This indicator complements the marine mammal index by providing finer spatial resolution and stronger connections to forage fish productivity.Input Data– Blueprint 2.1 ecosystem map (see Appendix A)– Potential species to include in this...
thumbnail
This indicator is an index of habitat suitability for twelve upland hardwood and forested wetland bird species based on patch size and other ecosystem characteristics such as proximity to water and proximity to forest and ecotone edge.Reason for SelectionThis index represents a variety of ecosystem features and is already being modeled and monitored for the entire region by the Atlantic Coast Joint Venture. The needs of these forest bird species are increasingly restrictive at higher index values, reflecting better quality habitat.Input Data– Southeast GAP species models:Chuck-will’s widow (bCWWI)Red-headed woodpecker (bRHWO)Wood Thrush (bWOTH)Whip-poor-will (bWPWI)American Woodcock (bAMWO)Hooded Warbler (bHOWA)Kentucky...
thumbnail
Ecosystems are changing worldwide and critical decisions that affect ecosystem health and sustainability are being made every day. As ecologists, we have a responsibility to ensure that these decisions are made with access to the best available science. However, to bring this idea into practice, ecology needs to make a substantial leap forward towards becoming a more predictive science. Furthermore, even for basic, conceptual questions there is a lot to be gained by addressing problems from a forecasting perspective, with more frequent data-model comparisons helping to highlight misunderstandings and reframe long-standing questions. Ecological forecasting is occurring across a wide range of ecological sub-disciplines,...
thumbnail
Non-native insect invasions increasingly cause widespread ecological and economic damage in natural and agricultural ecosystems. Non-native insects specialized for feeding on specific plant groups are particularly problematic as they can potentially eliminate an entire genus of native plant species across a wide area. For example, emerald ash borer has killed hundreds of millions of ash trees in North America since its accidental introduction from Asia, including more than 99% of all trees in forests near the epicenter of the invasion. However, most introduced insects do not become high-impact pests. Our goal is to develop a framework that allows us to predict whether non-native herbivorous insects in natural ecosystems...
thumbnail
Migratory species may provide more ecosystem goods and services to humans in certain parts of their range than others. These areas may or may not coincide with the locations of habitat on which the species is most dependent for its continued population viability. This situation can present significant policy challenges, as locations that most support a given species may be in effect subsidizing the provision of services in other locations, often in different political jurisdictions. The ability to quantify these spatial subsidies could be used to develop economic incentives that internalize the costs and benefits of protecting migratory species, enhancing cross-jurisdictional cooperative management. Targeted payments...
thumbnail
Plants convert carbon dioxide into sugars for food during photosynthesis, and this provides food for all animal life. However, photosynthesis is inhibited when a plant’s enzymes use oxygen instead of carbon dioxide. To avoid this use of oxygen, some plants developed a photosynthetic adaptation – called C4 photosynthesis – to concentrate carbon dioxide around the enzymes. While less than 5% of plants use the C4 photosynthetic pathway, they make up ~20% of global terrestrial gross primary productivity. Due to their high productivity, C4 plants have a profound impact on ecosystems, economies, the carbon cycle, and our climate. Corn and sugarcane are both C4 plants, as are foundational western livestock and wildlife...
thumbnail
Amphibian populations are declining globally at unprecedented rates but statistically rigorous identification of mechanisms is lacking. Identification of reasons underlying large-scale declines is imperative to plan and implement effective conservation efforts. Most research on amphibian population decline has focused on local populations and local factors. However, the ubiquity of declines across species and landscapes suggests that causal factors at a broader scale are also important. Elucidation of the mechanisms driving population change has lagged, mainly because data have been unavailable at continental scales. We propose to address this need by assembling data to answer questions about broad-scale drivers...
thumbnail
Carbon storage by ecosystem type and protection status was derived from total ecosystem carbon estimates provided by Sleeter et al. 2018 and used to estimate terrestrial carbon storage in developed, forested, shrub/scrub, grassland/herbaceous, and agricultural land in the Southeast United States. It does not include estimates for wetland carbon storage. Sleeter, B.M., Liu, J., Daniel, C., Rayfield, B., Sherba, J., Hawbaker, T.J., Zhu, Z., Selmants, P.C. and Loveland, T.R., 2018. Effects of contemporary land-use and land-cover change on the carbon balance of terrestrial ecosystems in the United States. Environmental Research Letters, 13(4), p.045006.
thumbnail
This database is the result of an extensive literature search aimed at identifying documents relevant to the emerging field of dam removal science. In total the database contains 214 citations that contain empirical monitoring information associated with 181 different dam removals across the United States and abroad. Data includes publications through 2016 and supplemented with the U.S. Army Corps of Engineers National Inventory of Dams database, U.S. Geological Survey National Water Information System and aerial photos to estimate locations when coordinates were not provided. Publications were located using the Web of Science, Google Scholar, and Clearinghouse for Dam Removal Information.
thumbnail
This indicator is a continuous index that measures the percent of non-impervious cover by catchment.Reason for SelectionImpervious cover is easy to monitor and model, and is widely used and understood by diverse partners. It is also strongly linked to water quality, estuary condition, eutrophication, and freshwater inflow (Schueler et al. 2009, Wenger et al. 2008, Uphoff et al. 2011).Input Data– 2016 National Land Cover Database: Percent developed imperviousness– National Hydrography Dataset Plus Version 2 (NHD Plus Version 2)Mapping Steps1) We calculated percent impervious for each NHD Plus catchment using the NLCD 2016 impervious surface layer and the ArcGIS Zonal Statistics as Table tool.2) We converted percent...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS, ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS, ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS, ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS, ANTHROPOGENIC/HUMAN INFLUENCED ECOSYSTEMS, All tags...
thumbnail
This indicator draws from the Priority Amphibian and Reptile Conservation Areas (PARCAs), an expert-driven, nonregulatory designation that captures places capable of supporting viable amphibian and reptile populations.Reason for SelectionReptiles and amphibians provide an indicator of the condition and arrangement of embedded isolated wetlands.Input DataSouth Atlantic Priority Amphibian and Reptile Conservation Areas (PARCAs) served as input data for this indicator. PARCA is a nonregulatory designation established to raise public awareness and spark voluntary action by landowners and conservation partners to benefit amphibians and/or reptiles. Areas are nominated using scientific criteria and expert review, drawing...
thumbnail
This dataset includes ten years of emissions and sequestration estimates (2005-2014) in two separate tables, 1) the combustion and extraction of fossil fuels on Federal lands and 2) processes from the ecosystems on those Federal lands. The fossil fuel related estimates include the greenhouse gases carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), and the ecosystems estimates include only CO2. The results are presented by State and year, including the Pacific and Gulf offshore areas in the fossil fuel associated estimates. In addition to total emissions, the estimates are broken into categories by the sector of the economy where the combustion or extraction related emissions occurred or the biologic process...
thumbnail
Nitrogen deposition is altering forest dynamics, terrestrial carbon storage, and biodiversity. However, our ability to forecast how different tree species will respond to N deposition, especially key response thresholds, is limited by a lack of synthesis across spatial scales and research approaches. To develop our best understanding of N deposition impact on tree growth and survival, we will integrate plot-­‐ level studies describing plant growth and survival responses to N inputs and plant-­‐ available soil nutrients with a continental scale analysis across a N deposition gradient. Our primary outcome will be estimates of tree response to N deposition with explicit representation of uncertainty and the identification...
map background search result map search result map Animal Migration and Spatial Subsidies: Establishing a Framework for Conservation Markets BackscatterB [EM300]--Offshore Aptos, California Indicator: Marine Birds Seed biomass from shallow coastal water areas along a salinity gradient in Barataria Bay, Louisiana (2015) Federal Lands Greenhouse Gas Emissions and Sequestration in the United States: Estimates 2005-14 - Data Release USGS Dam Removal Science Database v3.0 Total ecosystem carbon storage in the Southeast United States Blueprint 2020 Data Download Indicator: Permeable Surface Indicator: Imperiled Aquatic Species Indicator: Amphibian and Reptile Areas Indicator: Low Urban Historic Indicator: Forest Birds BackscatterB [EM300]--Offshore Aptos, California Animal Migration and Spatial Subsidies: Establishing a Framework for Conservation Markets Seed biomass from shallow coastal water areas along a salinity gradient in Barataria Bay, Louisiana (2015) Blueprint 2020 Data Download Indicator: Permeable Surface Indicator: Imperiled Aquatic Species Indicator: Amphibian and Reptile Areas Indicator: Low Urban Historic Indicator: Forest Birds Indicator: Marine Birds Total ecosystem carbon storage in the Southeast United States USGS Dam Removal Science Database v3.0 Federal Lands Greenhouse Gas Emissions and Sequestration in the United States: Estimates 2005-14 - Data Release