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3,105 results for “Vegetation =”
Regional plot x species data for alpine vegetation
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LT-Brazil: A database of leaf traits across biomes and vegetation types in Brazil
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Vegetation structure and fuel dynamics in fire-prone, Mediterranean-type Banksia woodlands
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Data from: Vegetation biomass and landscape context shape web-building spider dietary niche breadth in urban vacant lots
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Large contribution of woody plant expansion to recent vegetative greening of the Northern Great Plains
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Sediment, crab, and vegetation data from Sapelo Island, Georgia: 2017 - 2019
Sediment samples, Sesarma reticulatum gut and tissue samples, Spartina alterniflora leaves, and benthic diatoms were analyzed for a suite of biogeochemical parameters, including total carbon, total nitrogen, stable isotopes of carbon and nitrogen, and a subset of samples were analyzed for total hydrolyzable amino acids. Samples were collected between 2017 and 2019 on Sapelo Island, Georgia, USA. Samples were collected from Sesarma-grazed and un-grazed creeks. Analyses were conducted at the University of Florida and are associated with the manuscript by Morrison et al. entitled Influence of the keystone grazer, Sesarma reticulatum, on the hydrology and organic matter cycling of salt marshes in the southeastern United States.
United States Pacific Northwest surveys of coastal foredune topography and vegetation abundance, 2012-2014
These datasets document our measurements of dune plant species abundance and topography from paired vegetation and topographic cross-shore foredune surveys in the United States Pacific Northwest (Oregon and southern Washington coastlines) in Summer 2012 and Summer 2014. In 2012, we conducted cross-shore paired topographic and vegetation surveys at 126 transect locations, and performed three replicate cross-shore transects per location (for a total of 378 transects). Of these surveys, 58 transect locations were positioned within Habitat Restoration Areas (as described in Biel et al. 2017). In 2014, we repeated these topographic and vegetation surveys at 83 of the 2012 transect locations (performing a single transect survey per location). Within each transect, we measure elevation (using RTK GPS) and plant species abundance (using 0.25 m^2 quadrats) at 5 m intervals between the vegetation line and the foredune heel. Within each quadrat, we measure the percent cover of all plant species present, and the tiller abundance of the three dune building grasses, Ammophila arenaria (invasive), Ammophila breviligulata (invasive), and Elymus mollis (native). Together, these datasets encompass measurements of elevation and plant abundance from 7953 quadrats in 2012, and 1616 quadrats in 2014.
Response of humic acids and soil organic matter to vegetation replacement in subtropical high mountain forests
In this study, we used solid-state 13 C NMR spectroscopy, photometric analyses, and chemical fractionation to examine carbon (C) components and lability of SOM in a Japanese cedar (Cryptomeria japonica) forest and moso bamboo (Phyllostachys edulis) plantation reforested on a cutover primary broadleaf forest in Taiwan. The data was collected in Feb 2014.
Cellulose, Peat, and Mixed Vegetation in situ Decomposition in a Fen Exposed to Increasing Nitrogen Treatments, 2012-2015
Development of the oil sands has led to increasing atmospheric N deposition, with values as high as 17 kg N ha-1 yr-1; regional background levels <2 kg N ha-1 yr-1. To examine responses to N deposition, over five years, we experimentally applied N (as NH4NO3) to a fen near Mariana Lake, Alberta, at rates of 0, 5, 10, 15, 20, and 25 kg N ha-1 yr-1, plus controls (no water or N addition). We examined the effects of N addition on cellulose, peat, and mixed vegetation placed in the fen from 2012-2015 and collected after 5 and 17 months. Decomposition of cellulose filter paper increased with increasing N addition; the slopes of the responses did not differ between years, although decomposition was faster for filter paper placed in the field in 2014 than in either 2012 or 2013. In contrast, decomposition of Sphagnum moss was unaffected by N addition. Vascular plant litter decomposition decreased with N addition in 2015, but not 2014, Water addition alone had no significant effect on cellulose decomposition k values in any of the three years (p > 0.26) or on vascular plant litter mass in either year (p = 0.81). However, Sphagnum mass loss was significantly higher in the control treatment than in 0 kg N ha-1 yr-1 treatment (p = 0.0046) averaged over the two years of decomposition. Assessment of decomposition and its controls may be especially important in peatlands, as the development and persistence of peat depends on an excess of NPP over decomposition throughout the peat profile. There is evidence that increasing N deposition/availability stimulates cellulose decomposition in surface fen peat, as we found previously at Mariana Lake Bog, however, bog material decomposition appears to be more complicated.
Estimated wetland vegetation cover comparing reference and muskrat disturbed areas
Biota that act as ecosystem engineers are increasingly recognized as effective components of habitat restoration as they can continuously alter and shape their environments without human intervention. Muskrats are considered ecosystem engineers and are relatively common in North American wetlands. While muskrat impacts to large areas have been documented, few studies have quantified the impact of muskrats on ecosystem biodiversity. We conducted a field study in wetlands along the Upper St. Lawrence River (New York, USA) to investigate the effects of muskrat herbivory and structure building on plant biodiversity in cattail-invaded wetlands. The data collected are separated into two main groups, i.e. “reference” vegetation surveys and “muskrat” vegetation surveys. “Reference” surveys were conducted for the partial grant fulfillment funded by the New York Department of Environmental Conservation [contract AM10165] and the National Fish and Wildlife Foundation special project administered by the United States Fish and Wildlife Service, Partners for Fish and Wildlife Program, New York Field Office, Cortland, NY [grant number #2005-0129-055/58859]. “Muskrat” surveys were conducted for the Masters project by Z.X. Kua. The five datasets include 1) Reference quadrat plant taxa estimated cover (n = 1912), 2) Reference quadrat cattail measurements (n = 737), 3) Muskrat-disturbed quadrat plant taxa estimated cover (n = 1886), 4) Muskrat-disturbed quadrat cattail measurements (n = 582), and 5) Wetland plant taxa lookup table for vegetation survey (n = 135).
Soil Moisture and vegetation cover patterns after logging and burning an old-growth Douglas-fir forest in the Andrews Experimental Forest, 1960-1983
This soil moisture study was initiated in 1960 to investigate the effects of patch clearcut logging and slash burning (1962-63) in an old-growth Douglas-fir forest in the Oregon Cascade Range. Since soil moisture and vegetation sampling continued regularly until 1980, this is a unique data set that represents nearly two decades of post-treatment information. Plant cover exerts a profound influence on soil moisture levels through its effects on interception, infiltration, evaporation, and transpiration. In the Douglas-fir forests of the Pacific Northwest, clearcut logging and slash burning are common practices that can dramatically alter plant cover and soil moisture. Logging can increase soil moisture by temporarily reducing cover and associated water use, and burning may further augment soil moisture levels by suppressing the survival and regrowth of vegetation. Indeed, part of the rationale for slash burning in the region is to control shrubs and other vegetation that would otherwise compete with conifer seedlings for available moisture, light, and nutrients. Within a few years after burning, however, invading vegetation may deplete soil moisture to levels comparable to forested areas. Such observations point to the value of long-term information to better understand dynamic soil moisture and plant cover responses to forest practices.
Vegetation indices calculated for ITEX flux plots in 2004-2009 at Toolik, Alaska; Abisko, Sweden; Svalbard, Norway; Zackenberg, Northeast Greenland; and Barrow, Alaska
A spectrophotometer was used to scan the canopy vegetation of ITEX flux plots. The resulting reflectance spectra were used to calculate several vegetation indices of interest (NDVI, EVI, EVI2, PRI, WBI, Chlorophyll Index). Average values of these vegetation indices for each ITEX flux plot are presented here.
Vegetation indices calculated for ITEX harvest plots in 2004-2009 at Toolik, Alaska; Abisko, Sweden; Svalbard, Norway; Zackenberg, Northeast Greenland; and Barrow, Alaska
A spectrophotometer was used to scan the canopy vegetation of ITEX harvest plots. The resulting reflectance spectra were used to calculate several vegetation indices of interest (NDVI, EVI, EVI2, PRI, WBI, Chlorophyll Index). Average values of these vegetation indices for each ITEX harvest plot are presented here. These plots also had biomass harvests performed and were analyzed for leaf area and nitrogen content (see 2003-2009gsharvest.csv, 2003-2009gsharvestLAI-N.csv).
13C and 15N Content in Arctic Tussock Tundra and Wet Sedge Vegetation
This file contains 13C and 15N content from tussock tundra and wet sedge vegetation collected from experiemental plots during the years 2001-2006.
14C Uptake by Arctic Tussock Tundra Vegetation from 2002-2006
This file contains the 14C content of tussock tundra vegetation from 2002-2006. The 14C labeling occurred the summer of 2002.
14C Uptake by Arctic Wet Sedge Vegetation from 2002-2005
This file contains the 14C content of tussock tundra vegetation from 2002-2005. The 14C labeling occurred the summer of 2002.
Biomass from six vegetation types along a toposequence on a floodplain terrace of the Sagavanirktok River, Alaswka,1988, Arctic LTER.
Biomass was harvested from six vegetation types along a toposequence on a floodplain terrace of the Sagavanirktok River in the northern foothills of the Brooks Range , Alaska (68degrees 46' N, 148 degrees 51' W 50m). The vegetation sites are; upland tussock tundra, "hilltop heath", a "hillslope shrub-lupine", a "footslope Equisetum", a wet sedge tundra, and a "riverside willow".
Carbon, nitrogen and phosphorus content in the seasonally thawed soils are described for four arctic tundra vegetation types located near the Toolik Field Station, Arctic LTER 1993.
Carbon, nitrogen and phosphorus content in thawed soils are described for four arctic tundra vegetation types located near the Toolik Field Station.
GPS coordinates and vegetation descriptions for the ITEX circumarctic flux survey plots 2003-2009
GPS locations and vegetation descriptions for the ITEX flux survey plots. Survey plots were located in the Toolik Lake LTER fertilization experiment in Alaska; at Imnavait Creek, Alaska; at Paddus, Latnjajaure and the Stepps site near Abisko in northern Sweden; at various sites in Adventdalen, Svalbard; in the Zackenberg valley, Northeast Greenland; at BEO near Barrow, Alaska and at the Anaktuvuk River Burn in Alaska. Measurements were made during the growing seasons 2003 to 2009.
Analysis of vegetation distribution in interior Alaska and sensitivity to climate change using a logistic regression approach
All data are used in the following manuscript which is in prep Analysis of vegetation distribution in interior Alaska and sensitivity to climate change using a logistic regression approach Calef et al.
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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.