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Shrub Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-3 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, Black Hills, CO, All tags... Geospatial Products, ID, MT, Montana, ND, NE, Remote Sensing, SD, SageDAT-data, Sate of Idaho, Shrubland, South Dakota, State of Colorado, State of Montona, State of Nebraska, State of North Dakota, State of South Dakota, State of Utah, State of Wyoming, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, WY, Wyoming, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Bare Ground Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-3 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, Black Hills, CO, All tags... Geospatial Products, ID, MT, Montana, ND, NE, Remote Sensing, SD, SageDAT-data, Sate of Idaho, Shrubland, South Dakota, State of Colorado, State of Montona, State of Nebraska, State of North Dakota, State of South Dakota, State of Utah, State of Wyoming, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, WY, Wyoming, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Shrub Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Great Basin Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-2 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, AZ, CA, All tags... Geospatial Products, Great Basin, Great Basin, ID, NV, OR, Remote Sensing, SageDAT-data, Shrubland, State of Arizona, State of California, State of Idaho, State of Nevada, State of Oregon, State of Utah, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Herbaceous Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-3 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, Black Hills, CO, All tags... Geospatial Products, ID, MT, Montana, ND, NE, Remote Sensing, SD, SageDAT-data, Sate of Idaho, Shrubland, South Dakota, State of Colorado, State of Montona, State of Nebraska, State of North Dakota, State of South Dakota, State of Utah, State of Wyoming, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, WY, Wyoming, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Shrub Height - Provisional Remote Sensing Shrub/Grass NLCD Products for the Great Basin Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-2 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, AZ, CA, All tags... Geospatial Products, Great Basin, Great Basin, ID, NV, OR, Remote Sensing, SageDAT-data, Shrubland, State of Arizona, State of California, State of Idaho, State of Nevada, State of Oregon, State of Utah, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Do soil characteristics or microhabitat determine field emergence and success of Bromus tectorum? In southeastern Utah, Bromus tectorum occurs where Hilaria jamesii is dominant and rarely where Stipa hymenoides/S. comata dominate. To determine whether this distribution is due to soil characteristics or microhabitat, we transplanted H. jamesii soil to a Stipa site and vice versa during a severe drought (2001) and a wetter year (2002). Additionally, we planted B. tectorum under H. jamesii and Stipa canopies, with or without H. jamesii litter, and with or without herbivory. Bromus tectorum emergence and biomass in reciprocal transplants were similar at both sites; there were no site differences for all microhabitat treatments. Being under a plant canopy increased emergence in 2001 and decreased survival during... Categories: Publication; Types: Citation, Journal Citation; Tags: Hilaria jamesii, Journal of Arid Environments, Stipa, herbivory, litter, All tags... plant canopy, soil chemistry, Fewer tags Bare Ground Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Great Basin Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-2 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, AZ, CA, All tags... Geospatial Products, Great Basin, Great Basin, ID, NV, OR, Remote Sensing, SageDAT-data, Shrubland, State of Arizona, State of California, State of Idaho, State of Nevada, State of Oregon, State of Utah, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Sagebrush Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Great Basin Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-2 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, AZ, CA, All tags... Geospatial Products, Great Basin, Great Basin, ID, NV, OR, Remote Sensing, SageDAT-data, Shrubland, State of Arizona, State of California, State of Idaho, State of Nevada, State of Oregon, State of Utah, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Big Sagebrush Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Great Basin Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-2 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, AZ, CA, All tags... Geospatial Products, Great Basin, Great Basin, ID, NV, OR, Remote Sensing, SageDAT-data, Shrubland, State of Arizona, State of California, State of Idaho, State of Nevada, State of Oregon, State of Utah, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Annual Herbaceous Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-3 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, Black Hills, CO, All tags... Geospatial Products, ID, MT, Montana, ND, NE, Remote Sensing, SD, SageDAT-data, Sate of Idaho, Shrubland, South Dakota, State of Colorado, State of Montona, State of Nebraska, State of North Dakota, State of South Dakota, State of Utah, State of Wyoming, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, WY, Wyoming, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Sagebrush Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-3 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, Black Hills, CO, All tags... Geospatial Products, ID, MT, Montana, ND, NE, Remote Sensing, SD, SageDAT-data, Sate of Idaho, Shrubland, South Dakota, State of Colorado, State of Montona, State of Nebraska, State of North Dakota, State of South Dakota, State of Utah, State of Wyoming, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, WY, Wyoming, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Annual Herbaceous Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Great Basin Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-2 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, AZ, CA, All tags... Geospatial Products, Great Basin, Great Basin, ID, NV, OR, Remote Sensing, SageDAT-data, Shrubland, State of Arizona, State of California, State of Idaho, State of Nevada, State of Oregon, State of Utah, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Sagebrush Height - Provisional Remote Sensing Shrub/Grass NLCD Products for the Great Basin Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-2 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, AZ, CA, All tags... Geospatial Products, Great Basin, Great Basin, ID, NV, OR, Remote Sensing, SageDAT-data, Shrubland, State of Arizona, State of California, State of Idaho, State of Nevada, State of Oregon, State of Utah, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Exotic plant invasion alters nitrogen dynamics in an arid grassland The introduction of nonnative plant species may decrease ecosystem stability by altering the availability of nitrogen (N) for plant growth. Invasive species can impact N availability by changing litter quantity and quality, rates of N2-fixation, or rates of N loss. We quantified the effects of invasion by the annual grass Bromus tectorum on N cycling in an arid grassland on the Colorado Plateau (USA). The invasion occurred in 1994 in two community types in an undisturbed grassland. This natural experiment allowed us to measure the immediate responses following invasion without the confounding effects of previous disturbance. Litter biomass and the C:N and lignin:N ratios were measured to determine the effects on... Categories: Publication; Types: Citation, Journal Citation; Tags: Bromus tectorum, Canyonlands National Park, Ecological Applications, N mineralization, Utah, All tags... changes in biomass and chemistry, denitrification enzyme activity, desert vegetation, ecosystem carbon, ecosystem nitrogen, grasslands, invasive species, litter, litter quality, plant invasion, plant-available N following plant invasion, Fewer tags Exotic plant invasion alters nitrogen dynamics in an arid grassland The introduction of nonnative plant species may decrease ecosystem stability by altering the availability of nitrogen (N) for plant growth. Invasive species can impact N availability by changing litter quantity and quality, rates of N2-fixation, or rates of N loss. We quantified the effects of invasion by the annual grass Bromus tectorum on N cycling in an arid grassland on the Colorado Plateau (USA). The invasion occurred in 1994 in two community types in an undisturbed grassland. This natural experiment allowed us to measure the immediate responses following invasion without the confounding effects of previous disturbance. Litter biomass and the C:N and lignin:N ratios were measured to determine the effects on... Categories: Publication; Types: Citation, Journal Citation; Tags: Bromus tectorum, Canyonlands National Park, Ecological Applications, N mineralization, Utah, All tags... changes in biomass and chemistry, denitrification enzyme activity, desert vegetation, ecosystem carbon, ecosystem nitrogen, grasslands, invasive species, litter, litter quality, plant invasion, plant-available N following plant invasion, Fewer tags Ecohydrological controls of soil evaporation in deciduous drylands: How the hierarchical effects of litter, patch and vegetation mosaic cover interact with phenology and season Soil evaporation, a critical ecohydrological process in drylands, can exhibit substantial spatio-temporal variation. Spatially, ecohydrological controls of soil evaporation may generally depend on a hierarchical structure spanning from the presence or absence of litter, through canopy patches of woody plants and intercanopy patches separating them, up to the overall vegetation mosaic characterized by density of woody plant cover in the landscape, although assessment of these factors in concert is generally lacking. Temporally, ecohydrological controls can be further complicated by not only seasonal climate, but also phenology, particularly in seasonally deciduous drylands. We experimentally assessed the interactive... Categories: Publication; Types: Citation, Journal Citation; Tags: Journal of Arid Environments, canopy cover, drylands, ecohydrology, hemispherical photography, All tags... litter, prosopis, shading, soil evaporation, vegetation cover, vegetation seasonality, Fewer tags Shrub Height - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-3 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, Black Hills, CO, All tags... Geospatial Products, ID, MT, Montana, ND, NE, Remote Sensing, SD, SageDAT-data, Sate of Idaho, Shrubland, South Dakota, State of Colorado, State of Montona, State of Nebraska, State of North Dakota, State of South Dakota, State of Utah, State of Wyoming, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, WY, Wyoming, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Sagebrush Height - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-3 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, Black Hills, CO, All tags... Geospatial Products, ID, MT, Montana, ND, NE, Remote Sensing, SD, SageDAT-data, Sate of Idaho, Shrubland, South Dakota, State of Colorado, State of Montona, State of Nebraska, State of North Dakota, State of South Dakota, State of Utah, State of Wyoming, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, WY, Wyoming, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags Litter Percent - Provisional Remote Sensing Shrub/Grass NLCD Products for the Montona/Wyoming Study Area Accurate and consistent estimates of shrubland ecosystem components are crucial to a better understanding of ecosystems condition in arid and semiarid lands. We developed an innovative approach by integrating multiple information to quantify shrubland components as continuous field products within the National Land Cover Database (NLCD). The approach consists of five major parts: field sample collection, high-resolution mapping of shrubland components using WorldView-3 imagery and regression tree models, Landsat 8 radiometric balancing and phenological mosaicking, coarse resolution estimate of shrubland components across a large geographic extent using Landsat 8 phenological mosaics and regression tree models, and... Types: Citation; Tags: 002, 007, 010, Black Hills, CO, All tags... Geospatial Products, ID, MT, Montana, ND, NE, Remote Sensing, SD, SageDAT-data, Sate of Idaho, Shrubland, South Dakota, State of Colorado, State of Montona, State of Nebraska, State of North Dakota, State of South Dakota, State of Utah, State of Wyoming, U.S., U.S. Geoloical Survery, US, USGS, UT, United States, WY, Wyoming, annual herbaceous, bare ground, big sagebrush, biota, digital spatial data, environment, herbaceous, imageryBaseMapsEarthCover, land cover, litter, sagebrush, shrub, Fewer tags The population biology of Bromus tectorum in forests: effect of disturbance, grazing, and litter on seedling establishment and reproduction The effect of tree canopy, understory, herbivores, and litter depth on seedling establishment, survival, and reproduction of the alien grass, Bromus tectorum (cheatgrass), was examined in a series of experiments in four forest habitat types in western North America. Higher recruitment, survival, and reproduction on clearcuts, which would be expected if the overstory alone is limiting the distribution of cheatgrass in forests, were not observed. Removing the understory in an otherwise undisturbed Pinus ponderosa forest did, however, increase the emergence of B. tectorum, but plants in these experimentally-created openings were more vulnerable to grazing by small mammals. In contrast, removing the sparse understory... Categories: Publication; Types: Citation, Journal Citation; Tags: Bromus tectorum, Oecologia, forest disturbance, grazing, herbivory, All tags... litter, Fewer tags 1 2 »