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691 results for “vegetation data”
Plant aboveground biomass data: Effect of Herbivores on Vegetation Treated with Different N Levels and the Effect of N Addition on Herbivore Populations.
The purpose of this experiment is to study the effect of NH4NO3 addition on vegetation and herbivore populations and the effects of various herbivores on vegetation treated with different nitrogen levels. This experiment is being conducted in fields A, B, and C and is nested within the macroplots of E004. There are 4 fence exclosures each designed to exclude a specific group of herbivores, a fence exclosure to exclude all 4 groups, a fence that should exclude no herbivores to measure fence effects, and a plot with no fence as a control. Exclosures are 2 by 4 meters and are located in macroplot subsections 3 and 8. Herbivore treatments are randomly placed in the grid. For a description of fertilizer added to E005, see file fertilization details. For a list of treatments, see the treatment layouts in file trmte05.
Tree data: Effects of Deer on Growth and Establishment of Woody Vegetation in Old Fields
The purpose of this experiment is to measure the effects of deer on the growth and establishment of woody vegetation in old fields. This experiment is located in fields A and B. There are 6 plots in each field. Each plot is 10 by 30 meters, with the long axis perpendicular to the field/woods margin. Plots within a field are spaced at least 5 meters apart. Approximately 5 meters of the 30 meters length extends into the woods, the remaining 25 meters extend out into the field. Each plot is divided into twelve, 5 by 5 meter sections. Six quadrats were placed within each exclosure in each 5 meters of length. Plots are located randomly within each of those blocks. To assign locations randomly a grid was set up from 0 - 4 along the length and 0 - 9 along the width of each plot and random numbers were drawn in pairs, one from each of the random distributions. The plots were marked with rebar. Three plots in each field are fenced with poultry netting, approximately 2 meters high, to exclude deer.
Plant aboveground biomass data: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Grasshopper data: Effect of N Addition on Vegetation with Mammalian Herbivory
The purpose of this experiment is to look at the effect of NH4NO3 addition in an unfenced area. The experiment is located in field E. There are 4 different treatments C, F, H, and I as defined in fertilization details in the "microplot" strategy. The plots are 4 by 4 meters and are laid out in an 8 by 8 grid with 1 meter aisles. From 1989-1994 plots with fertilizer treatment 1 were treated as complete controls, receiving no nutrients at all.
Plant aboveground biomass data: Effect of N Addition on Vegetation With Mammalian Herbivory Initially on Disked Ground
This experiment is identical to E008 except the ground was disked thoroughly before the plots were laid out. From 1989-1994, plots with fertilizer treatment 1 were treated as complete controls (treatment 9), receiving no nutrients at all.
Grasshopper data: Effect of N Addition on Vegetation With Mammalian Herbivory Initially on Disked Ground
This experiment is identical to E008 except the ground was disked thoroughly before the plots were laid out. From 1989-1994, plots with fertilizer treatment 1 were treated as complete controls (treatment 9), receiving no nutrients at all.
Plant aboveground biomass data: Effects of Nitrogen on Vegetation Under Herbivore Pressure
The purpose of this experiment is to measure the effect of NH4NO3 addition on vegetation under herbivore pressure. This experiment is located in fields A, B, and C. There are 3 treatments, 2 nitrogen levels and a control. The treatments are E, G, and I as defined in fertilization details under the "microplot" category. There are 16 reps of the 3 treatments for a total of 48 plots in each field. Treatments are randomly assigned to the plots. The plots are 4 by 4 meters and are laid out in a 6 by 8 grid with 1 meter aisles. For a list of treatments, /see the treatment layouts in files trmte11. In 1987, experiment E053 was established on top of E011 in field C. For a list of treatments, see E053. Also is 1992, experiment (Walt Carson's) was established on top of E011 in field C. In the spring of 1992, experiment E100 was established on top of E011, in fields A, and B. For a list of treatments, see the treatment layouts in file trmte100.
Grasshopper data: Effects of Nitrogen on Vegetation Under Herbivore Pressure
The purpose of this experiment is to measure the effect of NH4NO3 addition on vegetation under herbivore pressure. This experiment is located in fields A, B, and C. There are 3 treatments, 2 nitrogen levels and a control. The treatments are E, G, and I as defined in fertilization details under the "microplot" category. There are 16 reps of the 3 treatments for a total of 48 plots in each field. Treatments are randomly assigned to the plots. The plots are 4 by 4 meters and are laid out in a 6 by 8 grid with 1 meter aisles. For a list of treatments, /see the treatment layouts in files trmte11. In 1987, experiment E053 was established on top of E011 in field C. For a list of treatments, see E053. Also is 1992, experiment (Walt Carson's) was established on top of E011 in field C. In the spring of 1992, experiment E100 was established on top of E011, in fields A, and B. For a list of treatments, see the treatment layouts in file trmte100.
Plant species percent cover data: Effect of Fire Frequency on Grassland Vegetation and Soils
The purpose of this experiment, begun in 1983 by Johannes Knops, is to determine what effect different fire frequencies have on grassland vegetation. This experiment is being conducted in field B. There are 4 different burn treatments: 1. plots burned every year 2. plots burned every other year 3. controls which are not burned 4. plots burned every fourth year There are 6 replicates of each treatment which were randomly assigned to the 24 plots. Plots are 8 by 8 meters and are placed in a 3 by 8 grid with 2 meter walkways. Plots are marked with colored rebar at each corner.
Plant aboveground biomass data: Effect of Fire Frequency on Grassland Vegetation and Soils
The purpose of this experiment, begun in 1983 by Johannes Knops, is to determine what effect different fire frequencies have on grassland vegetation. This experiment is being conducted in field B. There are 4 different burn treatments: 1. plots burned every year 2. plots burned every other year 3. controls which are not burned 4. plots burned every fourth year There are 6 replicates of each treatment which were randomly assigned to the 24 plots. Plots are 8 by 8 meters and are placed in a 3 by 8 grid with 2 meter walkways. Plots are marked with colored rebar at each corner.
Gunnison's Prairie Dog Relocation Project: Vegetation Cover Data from the Sevilleta National Wildife Refuge, New Mexico (2005-2013)
Prairie dogs are keystone species that impact both animals and plants in grassland habitats. They are a food resource for secondary consumers such as badgers, foxes, and raptors. Also, the mounds that they construct are home to many arthropod and reptile species that otherwise might not survive in grasslands. Both Gunnison’s and black-tailed prairie dogs can increase the number of plant species in grasslands and landscape heterogeneity with their ecosystem engineering that creates disturbed patches on the landscape. Gunnison’s prairie dogs, which were native herbivores at the Sevilleta National Wildlife Refuge (NWR) before their populations disappeared, were reintroduced at the Sevilleta NWR in 1997, 2005, and 2008. In 1998, a Gunnison’s prairie dog colony naturally established along the northern border on the east side of the Refuge. The naturally occurring colony and the colony that was reintroduced in 1997 have since then severely declined or gone locally extinct. Still, with the removal of cattle from the Sevilleta in 1973, the reintroductions of Gunnison’s prairie dogs in 2005 and 2008 provides an interesting opportunity to study how a native keystone herbivore affects a grassland habitat without the pressures and competition from livestock.
SGS-LTER Bouteloua gracilis Removal Experiment Vegetation Density Data on the Central Plains Experimental Range, Nunn, Colorado, USA 1997-2008
This data package was produced by researchers working on the Shortgrass Steppe Long Term Ecological Research (SGS-LTER) Project, administered at Colorado State University. Long-term datasets and background information (proposals, reports, photographs, etc.) on the SGS-LTER project are contained in a comprehensive project collection within the Digital Collections of Colorado (http://digitool.library.colostate.edu/R/?func=collections&collection_id=3429). The data table and associated metadata document, which is generated in Ecological Metadata Language, may be available through other repositories serving the ecological research community and represent components of the larger SGS-LTER project collection. Six sites approximately 6 km apart were selected at the Central Plains Experimental Range in 1997. Within each site, there was a pair of adjacent ungrazed and moderately summer grazed (40-60% removal of annual aboveground production by cattle) locations. Grazed locations had been grazed from 1939 to present and ungrazed locations had been protected from 1991 to present by the establishment of exclosures. Within grazed and ungrazed locations, all tillers and root crowns of B. gracilis were removed from two treatment plots (3 m x 3 m) with all other vegetation undisturbed. Two control plots were established adjacent to the treatment plots. Plant density was measured annually by species in a fixed 1m x 1m quadrat in the center of treatment and control plots. For clonal species, an individual plant was defined as a group of tillers connected by a crown Coffin & Lauenroth 1988, Fair et al. 1999). Seedlings were counted as separate individuals. In the same quadrat, basal cover by species, bare soil, and litter were estimated annually using a point frame. A total of 40 points were read from four locations halfway between the center point and corners of the 1m x 1m quadrat. Density was measured from 1998 to 2005 and cover from 1997 to 2006. All measurements were taken in late
SGS-LTER Bouteloua gracilis Removal Experiment Vegetation Point of Intercept (Cover) Data on the Central Plains Experimental Range, Nunn, Colorado USA 1997-2005, ARS Study Number 155
This data package was produced by researchers working on the Shortgrass Steppe Long Term Ecological Research (SGS-LTER) Project, administered at Colorado State University. Long-term datasets and background information (proposals, reports, photographs, etc.) on the SGS-LTER project are contained in a comprehensive project collection within the Digital Collections of Colorado (http://digitool.library.colostate.edu/R/?func=collections&collection_id=3429). The data table and associated metadata document, which is generated in Ecological Metadata Language, may be available through other repositories serving the ecological research community and represent components of the larger SGS-LTER project collection. Six sites approximately 6 km apart were selected at the Central Plains Experimental Range in 1997. Within each site, there was a pair of adjacent ungrazed and moderately summer grazed (40-60% removal of annual aboveground production by cattle) locations. Grazed locations had been grazed from 1939 to present and ungrazed locations had been protected from 1991 to present by the establishment of exclosures. Within grazed and ungrazed locations, all tillers and root crowns of B. gracilis were removed from two treatment plots (3 m x 3 m) with all other vegetation undisturbed. Two control plots were established adjacent to the treatment plots. Plant density was measured annually by species in a fixed 1m x 1m quadrat in the center of treatment and control plots. For clonal species, an individual plant was defined as a group of tillers connected by a crown (Coffin and Lauenroth 1988, Fair et al. 1999). Seedlings were counted as separate individuals. In the same quadrat, basal cover by species, bare soil, and litter were estimated annually using a point frame. A total of 40 points were read from four locations halfway between the center point and corners of the 1m x 1m quadrat. Density was measured from 1998 to 2005 and cover from 1997 to 2006. All measurements were taken in l
Marsh vegetation burial experiment biomass data, August 2014
End of year biomass harvested from marsh vegetation burial experiment on Hog Island. Experiment was set up at two sites - one in the high marsh and one in the low marsh. Within each site, a 6x6 array of mesocosms was established with 6 replicates of 6 different burial treatments (0, 5, 10, 15, 30, and 60 centimeters). After one growing season, the biomass was clipped from the top of each mesocosm, the mesocosm and sand layer was removed, and the vegetation within the sand layer was clipped at the marsh surface. This biomass was then returned to the lab, washed, dried to a constant weight, and weighed.
Microclimate and growth data under three vegetation manipulations with and without Morella cerifera seedlings and grass clipping on Hog Island, Virginia, 2018
These data represent the growth, physiology, and microclimate measurements of 30 Morella cerifera seedlings in a south Hog Island swale. There were three manipulations: shrub seedlings with intact grass canopy, shrub seedlings with grasses clipped, and plots with no shrub seedlings but an intact grass canopy. Measurements include shrub seedlings dimensions, and isotopic characterizations for N and C.
Vegetation Cover Permanent Plot Data : Biomass at Upper Phillips Creek marsh at the Virginia Coast Reserve 1990
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Vegetation Cover Permanent Plot Data: Bulk Density at Upper Phillips Creek marsh at the Virginia Coast Reserve 1990-1992
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Vegetation Cover Permanent Plot Data : Macroorganic Material at Upper Phillips Creek at the Virginia Coast Reserve 1990-1992
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Data used in "Evaluation of topography and vegetation coverage impacts on watershed-scale active layer freeze-thaw processes with a simple algorithm in permafrost region on the Qinghai-Tibet Plateau"
<p>This is the data used in the manuscript "Evaluation of topography and vegetation coverage impacts on watershed-scale active layer freeze-thaw processes with a simple algorithm in permafrost region on the Qinghai-Tibet Plateau" (JGR earth surface 2020JF005564 ).</p>
Supporting data for "Quantifying fluid retention due to natural vegetation in a forest floodplain analogue using the Aggregated Dead Zone (ADZ) dilution approach"
<p>Raw fluorescence data and derived flow metrics from experimental work undertaken in a hydraulic flume facility in support of the publication:</p> <p>"<strong>Quantifying fluid retention due to natural vegetation in a forest floodplain analogue using the Aggregated Dead Zone (ADZ) dilution approach"</strong></p> <p>Water Resources Research <a href="https://doi.org/10.1029/2020WR027070">https://doi.org/10.1029/2020WR027070</a> </p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.