Skip to main content
Advanced Search

Filters: Tags: the nature conservancy (X)

183 results (88ms)   

Filters
Date Range
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
thumbnail
Seamounts and vents map citation: Kitchingman and Lai 2004, Ramirez-Llodra and Baker 2006. Map data source: Kitchingman, A. and S. Lai. 2004. “Inferences on potential seamount locations from mid-resolution bathymetric data.” In: Morato T, Pauly D (eds) Seamounts: Biodiversity and Fisheries. Fisheries Centre, University of British Colombia, Vancouver, Canada, pp 7-12 Ramirez-Llodra, E. and M.C. Baker. 2006. Data on the location of hydrothermal vents. Biogeography of Chemosynthetic Ecosystems (ChEss) Project (www.noc.soton.ac.uk/chess). Map Technical Notes Locations of seamounts are from (Kitchingman and Lai 2004) and were developed from a global GIS based analysis, which identifies a total of 14,000 seamounts....
thumbnail
Percent land area formally protected, by terrestrial ecoregion. We derived estimates of protected area coverage from the World Database of Protected Areas (WDPA, UNEP/IUCN 2007) with supplements for the United States (CBI 2006) and Australia (CAPAD 2006). The WDPA is the most comprehensive global catalog of protected areas and includes data about their sizes, locations, and IUCN classifications of management designation. The WDPA was assembled by a broad alliance of organizations that aimed to maintain a freely available, accurate, and current database that is accepted as a global standard by all stakeholders. The distribution of all protected areas was mapped in a Geographic Information System and then summarized...
thumbnail
Accessibility of natural habitats to humans, by terrestrial ecoregion. The human accessibility map provides an index of the level of effort it would take for a human on foot to access any given square kilometer of nonconverted land from existing infrastructure. We calculated human accessibility from a one-square-kilometer spatial grid of the terrestrial world consisting of a cost surface where the value of each cell was derived from topographic slope, vegetation type, and vegetation density. We developed a second matching spatial grid of infrastructure, depicting roads, railroads, navigable rivers, cities, and towns. Then we calculated a least cost path from each noninfrastructure grid cell to infrastructure grid...
thumbnail
Proportion of coral bleaching events that were high impact, by marine ecoregion. Data on coral bleaching is derived from ReefBase and represents bleaching from a single year (1998). This was the worst bleaching event on record, linked to an El Niño year. It was also very well monitored, partly because of its unprecedented nature. Bleaching has remained widespread since that time in locations around the world. The data was generously provided by Jamie Oliver from a subset that was prepared for another publication (Oliver et al. 2008), and we have only made minor corrections to errors for the Seychelles in this data set. Bleaching reports in ReefBase were derived from a broad range of sources, but each has been assigned...
thumbnail
Change in nitrogen flow to the coast since pre-industrial times, by marine ecoregion. The map shows the estimated change in coastal discharge of dissolved inorganic nitrogen (DIN) between preindustrial and contemporary times by marine ecoregion. We calculated this change using data from Green et al. (2005), which was developed using land surface runoff models that included agriculture, livestock, human sewage, and atmospheric deposition sources of DIN. The original spatial data set assigned discharge values to coastal pixels, and we summed the value of pixels within each ecoregion for each time period. We then calculated ecoregional values by subtracting preindustrial sums from contemporary values. These data...
thumbnail
Number of globally threatened marine mammal species, by marine ecoregion. Using the online IUCN resource, the threatened species for each ecoregion were filtered for marine species only. Threatened species refer to those listed by IUCN Red List as Vulnerable, Endangered, or Critically Endangered (www.redlist.org). We downloaded the digital GIS data and summarized it by marine ecoregion to result in the number of threatened species per marine ecoregion. These data were derived by The Nature Conservancy, and were displayed in a map published in The Atlas of Global Conservation (Hoekstra et al., University of California Press, 2010). More information at http://nature.org/atlas. Data derived from: International Union...
thumbnail
This database is a compilation database of all available land trust and TNC conservation data
This map depicts the density of "More Resilient" cells (defined as the top two quintiles from the stratified resilience dataset) within a 3-km radius of every cell. This provides important additional context when making land protection or restoration decisions. Cells with higher density values are embedded in a larger resilient landscape. These areas are more likely to support biodiversity and ecological function over time in a changing climate. To quantify resilience at the landscape scale, we used a density function, where all cells classified in the final top two resilience quintiles were included in the density calculations, regardless of their underlying Ecofacet, and all other cells were ignored. Looking...


map background search result map search result map Conservation Easements for Wyoming Seamounts, Vents, and Seeps Percent Land Area Formally Protected by Terrestrial Ecoregion (2007) Human Accessibility by Terrestrial Ecoregion Percent of High-Impact Bleaching Events by Marine Ecoregion Number of Threatened Marine Mammal Species by Marine Ecoregion Change in Nitrogen Flow by Marine Ecoregion Stake_10_Delta_14.1_2014.03.19 Conservation Easements for Wyoming Seamounts, Vents, and Seeps Percent of High-Impact Bleaching Events by Marine Ecoregion Number of Threatened Marine Mammal Species by Marine Ecoregion Change in Nitrogen Flow by Marine Ecoregion Percent Land Area Formally Protected by Terrestrial Ecoregion (2007) Human Accessibility by Terrestrial Ecoregion