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51. Last of the Wild Project, Version 1, 2002 (LWP-1): Top One Percent Wild Areas Dataset (Geographic) [CIESIN_SEDAC_LWP_TOPWA_GEOG]
The Top One Percent Wild Areas Dataset of the Last of the Wild Project, Version 1, 2002 (LWP-1) is derived from the LWP-1 Human Footprint Dataset. The gridded data are classified according to their ...


52. U.S. Geological Survey (USGS) and the American Geological Institute (AGI) Global GIS Database [Global_GIS]
The U.S. Geological Survey (USGS) and The American Geological Institute (AGI) announced a cooperative agreement that will focus on making the USGS Global Geographic ...


53. GLOBSCAR: ATSR World Burned Surface Atlas [GLOBSCAR]
Background: Due to the environmental consequences of vegetation fires on a global scale (atmospheric emissions, greenhouse effect), regular maps of burned surfaces at a global scale are required ...


54. Global EVI derived from AVHRR, SPOT, and MODIS 1981-present [MEaSUREs_VIP_EVI]
MEaSUREs VIP Enhanced Vegetation Index products are supported by a NASA Making Earth Science Data Records for Use in Research Environments (MEaSUREs) collaborative agreement. The EVI is a two-band ...


55. Land Use in Europe [EEA_LANDUSE]
The Land Use Database for Europe is the total area excluding area under inland water bodies (major rivers and lakes). Agricultural Area is the sum of Arable land, Permanent crops and Permanent pastures. ...


56. Climate Quality Index [EEA_CLIMATE_INDEX]
Structural analysis 1961-1990. Climate data in DISMED will be based on the aridity index, which requires a harmonized way of computing evapotransipration, that at present differs among ...


57. Physiographic Subdivisions in Utah [AGRC_Physiographic]
This data set represents the physiographic subdivisions of Utah as defined by W.L. Stokes on his 1977 map published in "Geology in Utah," Utah Geological and Mineral Survey, 1986. The ...


58. African Elephant Specialist Group (AfESG) African Elephant Database [AEDd0001_155]
Summary of AfESG Protected Areas "This dataset is part of the African Elephant Database (AED), which is the most up-to-date ...


59. 1:250,000 Scale Quadrangles of Land Use/Land Cover GIRAS Spatial Data in the Conterminous U.S. [EPA_GIRAS]
This is land use/land cover digital data collected by USGS and converted to ARC/INFO by the EPA. This data is useful for environmental assessment of land use patterns with ...


60. Agricultural Online Access (AGRICOLA) Database [USDA_AGRICOLA]
AGRICOLA (AGRICultural OnLine Access) is a bibliographic database of citations to the agricultural literature created by the National Agricultural Library and its cooperators. Production ...


61. BIOME 6000: Reconstructed Biomes from Palaeoecological Data [NOAA_NCDC_PALEO_2001-046]
The Global Palaeovegetation Mapping (BIOME 6000) Project is a community-wide collaboration inaugurated in 1994 under the joint auspices of four of the elements of the International Geosphere-Biosphere ...


62. History Database of the Global Environment - HYDE [HYDE]   CHILD DIFs
The first version of this data base originally was set up for testing and validation of the so-called Integrated Model of the Greenhouse Effect (the IMAGE model; see Alcamo, ...


63. Northern Hemisphere Biome- and Process-Specific Changes in Forest Area and Gross Merchantable Volume: 1890-1990, CDIAC/DB1017 [CDIAC_DB1017]
The database DB1017 consists of annual values (1890 through 1990) of the areal extent (Ha) and gross merchantable (wood) volume (GMV in m3) of depletion and accrual processes in Northern ...


64. British Columbia Endangered Species and Ecosystems Information [Canada_BCCDC_EndangeredSpecies]
The British Columbia Conservation Data Centre (CDC) systematically collects and disseminates information on species and ecosystems at risk in British Columbia. This information ...


65. U.S. Long-Term Ecological Research (LTER) Network [LTER]
The Long Term Ecological Research (LTER) Network is a collaborative effort involving more than 1100 scientists and students investigating ecological processes over long temporal and broad ...


66. IAI-FinalReport_IAI-Final Report_ISP3_018: Effects of species and functional diversity on ecosystem function [IAIDIS518]
This dataset refers to the Final Report of the ISP round III project number 018, which has the name "Effects of species and functional diversity on ecosystem function: a comparison between ...


67. Coastal Change Analysis Project: Columbia River Estuary 1989-1992 [NOAA_CSC_CCAP_COLUMBIARIVER]
The Coastal Change Analysis Program (C-CAP) entered into a cooperative project with the Columbia River Estuary Study Task Force (CREST), the National Marine Fisheries Service (NMFS) Point ...


68. Coastal Change Analysis Project: St. Croix Estuary 1985-1992 [NOAA_NODC_CCAP_STCROIX]
A land cover change analysis data set is available on CD-ROM for the St. Croix Estuary region of Maine (United States) and New Brunswick (Canada). The data set uses Landsat Thematic Mapper ...


69. Web Fire Mapper GIS Data Products [WFM_GIS]
Web Fire Mapper is an internet based mapping tool that delivers locations of active fires in near real time. For selected regions and countries you can view an interactive map showing active fires ...


70. Digital Data Sets Describing Water Use, Toxic Chemical Releases, Metropolitan Areas, and Population Density of the Conterminous United States [USGS_OFR_99-78]
This report contains digital data sets describing water use, toxic chemical releases, metropolitan areas, and population density of the conterminous United States. The data source for the water-use ...


71. Species and Elements of Conservation Concern for Alberta, Canada [Canada_ANHIC_ConservationConcrn]
The Alberta Natural Heritage Information Centre (ANHIC) systematically collects and disseminates information on the location of plants, animals and vegetation communities of conservation concern in ...


72. US Wildland Fire Update [US_wildland_fireupdate]
This data set provides users with daily wild land fire updates for the United States. Statistical measurements used in this data set include number of new large fires, number of active large fires, ...


73. New Jersey Landscape Change Research [RUTGERS_LANDSCAPE_CHANGE]
A group of researchers at Rutgers is collaborating to study and address one of New Jersey's most pressing issues: the rapid development of the state's landscapes. Building on existing research, like ...


74. A New High-Resolution National Map of Vegetation Ecoregions Produced Empirically Using Multivariate Spatial Clustering [ORNL_MGC]
A parallel supercomputer was used to divide the conterminous 48 states of the United States into 1000, 2000, 3000, 5000, and 7000 ecoregions with relatively homogeneous values of elevation, edaphic, ...


75. Jornada Experimental Range Quadrants [MSU0021]
The "Jornada Experimental Range Quadrats" data contains reduced-scale maps of vegetation on one-meter by one-meter areas were made with a pantograph. A planimeter was used to measure the basal area ...


76. Atlas of Relations Between Climatic Parameters and Distributions of Important Trees and Shrubs in North America [USGS_P1650-a]
This atlas explores the continental-scale relations between the geographic ranges of woody plant species and climate in North America. A 25-km equal-area grid of modern climatic and bioclimatic parameters ...


77. Ecoregions of the United States and the World USDA/FS/IMI [USDA_ECOREGIONS]
"Description of the Ecoregions of the United States" is a volume that was originally published in 1978 to provide a general description of the ecosystem geography of the Nation as shown on the 1976 ...


78. National Landscape Conservation System [BLM_NLCS]
The Bureau of Land Management's National Landscape Conservation System offers some of the most remarkable landscapes found on the public lands in the American West. Many of these places have already ...


79. Toxic Chemicals in Canadian Seabirds [gomc_39]
The Canadian Wildlife Service (CWS) mandate includes, in addition to wildlife legislation, the laws and programs of Canada governing the use and release of toxic chemicals which may harm wildlife ...


80. Oregon/Washington Major Plant Groupings [BLM_OR_WASH_GIS_PLANT_GROUP]   PARENT DIF
This theme shows the areas where thirteen major plant groups may be found on all lands in Western Oregon. Ponderosa Pine/Snowbrush-Manzanita/Herbaceous Shasta Fir/Shrub/Herbaceous Douglas fir-Ponderosa ...


81. BIOME 6000 (v4.2): Vegetation Maps for the Mid-Holocene and Last Glacial Maximum [BIOME6000]
The Palaeovegetation Mapping Project (generally known as BIOME 6000: Prentice and Webb, 1998) was inaugurated in 1994 with the aim of providing global maps describing the vegetation patterns at 6000?500 ...


82. Mega-Biome Maps for the Mid-Holocene and Last Glacial Maximum [BIOME6000_MEGABIOME]
Most dynamic vegetation models (DGVMs) simulate far fewer PFTs, and hence discriminate far fewer biomes, than the palaeodata allow. In order to facilitate direct comparison with model output, we have ...


83. IAI-Science-ISP3-077-008:Patterns and controls of primary production in the Patagonian steppe: a remote sensing approach [IAIDIS680]   PARENT DIF
"We took advantage of regional gradients to study the spatial relationships between aboveground net primary production (ANPP) and climate in the Patagonian steppe of South America. We explored the ...


84. Global Potential Vegetation Dataset [SAGE_GLOBAL_POTVEG]
The Global Potential Vegetation data set shows historical changes in global land cover and specifically vegetation cover and changes to its characteristics over time. The data is available in two ...


85. Sevilleta LTER: 1986-1989 [USDA0392]
"Sevilleta LTER: 1986-1989" is a study of Sevilleta National Wildlife Refuge; confluence of three arid/semiarid biomes in New Mexico. This dataset includes vegetation dynamics, soil/vegetation relations, ...


86. IAI-Data-CRN_012_Austin_BIOD-MESOF: Relationship between above- and belowground diversity in an undisturbed temperate forest in southern Argentina (Patagonia) [IAIDIS762]   PARENT DIF
Recent interest in the relationship between biodiversity and ecosystem functioning has resulted in a multitude of large-scale manipulative experiments examining the effect of aboveground diversity ...


87. IAI-Data-CRN_012_Austin_BIOD-NITR: Effects of autotrophic nitrification on C and N cycling in the Patagonian steppe [IAIDIS764]   PARENT DIF
Human activities are altering biodiversity and the N cycle globally, affecting marine and terrestrial carbon cycling. Only a few specialized bacteria carry out nitrification in terrestrial ecosystems, ...


88. IAI-Data-CRN_012_Austin_GRASS-DEC: Relative importance of dominant grass species in a water-limited ecosystem in the Patagonian steppe [IAIDIS758]   PARENT DIF
Changes in biodiversity due to human impact of domestic grazers are occurring in many parts of the world, and the net effect of this change could have detrimental effects on ecosystem functioning. ...


89. IAI-Data-CRN_012_Austin_POSIT-DEC: The importance of position of senescent material on decomposition and nutrient release [IAIDIS760]   PARENT DIF
The importance of standing dead material, including coarse woody debris in forests, has been shown to be important in the regeneration of forests, and critical for maintaining a variety of ecosystem ...


90. IAI-Data-CRN_012_Baruch_Invaders: Response of a native Neotropical savanna grass and two African invaders to high CO2, drought, herbivory and fire [IAIDIS754]   PARENT DIF
The invaders project analyzed the response of a native Neotropical savanna grass (Trachypogon plumosus) and two African invaders (Hyparrhenia rufa and Melinis minutiflora) to high CO2, drought, herbivory ...


91. IAI-Data-CRN_012_Covalschi_hs: Regional and local controls of vegetation spatial-heterogeneity in the Patagonian steppe [IAIDIS742]   PARENT DIF
The objective of this study was to determine regional and local controls of vegetation spatial-heterogeneity in the Patagonian steppe. We considered two possible factors, rainfall and ovine herbivory. ...


92. IAI-Data-CRN_012_GPolo_CL72: Vegetation effects on soil in an arid ecosystem in the Patagonian steppe [IAIDIS734]   PARENT DIF
The vegetation affects the soil beneath, and these changes could be important in arid ecosystems. The patagonian steppe is characterized by patches of grasses and shrubs. The objective of this study ...


93. Range Plant Community Changes 1940-1978 in Northwest Oklahoma [USDA0092]
Document the dynamics of plant communities in Northwest Oklahoma and relate it to climate changes. Collection Organization: Southern Plains Range Research Station. Collection Methodology: Plant ...


94. SKCDC Element Occurrence Database [Canada_SKCDC_ElementOccurrence]
The Saskatchewan Conservation Data Centre (SKCDC) collects data on rare and imperiled species and plant communities in Saskatchewan. The SKCDC collects information on the Elements of biodiversity ...


95. European Land Surface Conditions 6K Reconstruction [NOAA_NCDC_PALEO_96-022]
These biomes are interpolated from 2014 pollen surface samples, for the Present, and from 343 pollen sites for 6000 yr BP. The coverage is relatively well balanced for the modern data, but the region ...


96. African 6000 Years B.P. Land Surface Conditions, WDC Paleoclimatology [NOAA_NGDC_PALEO_AFRICA6K]
This dataset describes land surface conditions at 6000 years B.P. on a 1 degree x 1 degree grid across northern Africa and the Arabian Peninsula. It includes information on the percentage in each ...


97. Species and Plant Community Database, Manitoba, Canada [Canada_MBCDC_SpeciesPlantComm]
The Manitoba Conservation Data Centre (MBCDC) systematically collects and disseminates information on the rare and endangered plant and animal communities of Manitoba. The data set includes ...


98. IAI-Data-CRN_012_Sala_PozosN: Aboveground and belowground nitrogen cycle in the Patagonian steppe [IAIDIS740]   PARENT DIF
The general objective of this experiment was to describe the aboveground and belowground nitrogen cycle in the Patagonian steppe. We used the Patagonian steppe as a model ecosystem because of the ...


99. IAI-Data-CRN_012_Yahdjian_drought: Drought effects on ecosystem functioning in a semiarid grass-shrub steppe South of Argentina [IAIDIS744]   PARENT DIF
We studied drought effects on ecosystem functioning in a semiarid grass-shrub steppe South of Argentina. We designed a 2-year rainfall manipulation experiment where we decreased water input with rainout ...


100. IAI-Science-ISP-3-077-001: Biozones of Patagonia (Argentina) [IAIDIS666]   PARENT DIF
"We present a classification of Patagonian ecosystems basedon functional attributes derived from the seasonal curves of Normalized Difference Vegetation Index (NDVI), calculated from spectral data ...


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