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22,549 results for “AND LTER”
River Nutrient Uptake and Transport at North Temperate Lakes LTER (2005-2011)
These data were collected by Stephen Michael Powers and collaborators for his Ph.d. research, documented in his dissertation: River Nutrient Uptake and Transport Across Extremes in Channel Form and Drainage Characteristics. A major goal of this research was to better understand how ecosystem form and landscape setting dictate aquatic biogeochemical functioning and elemental transport through rivers. To achieve this goal, major and minor ions were measured in both northern and southern Wisconsin streams located in a variety of land use settings. In total, 27 different streams were sampled at 104 different stations (multiple stations per system) from both groundwater and surface water sources. Organic and inorganic carbon and nitrogen pools were also measured in northern and southern Wisconsin streams. The streams that were sampled in northern Wisconsin flow through wetland ecosystems. In sampling such streams, the goal was to better understand how wetland ecosystems influence river nutrient deliveries. There is a large amount of stream chemistry data for Big Spring Creek, WI; where the influence of a small reservoir on solute transportation and transformation was studied in an agricultural watershed. All stream chemistry data is incorporated in a single data file, Water Chemistry 2005-2011. While the data is not included in the dissertation, a sediment core study was also done in the small reservoir and channel of Big Spring (BS) Creek, WI. The results of this study are featured in three data tables: BS Creek Sediment Core Analysis, BS Creek Sediment Core Chemistry, and BS Creek Longitudinal Profile. Finally, two data tables list the geospatial information of sampling sites for stream chemistry and sediment coring in Big Spring Creek. Documentation: Powers, S.M., 2012. River nutrient uptake and transport across extremes in channel form and drainage characteristics. ProQuest Dissertations and Theses. The University of Wisconsin - Madison, United States -- Wisconsin, p
Long-term fish abundance data for Wisconsin Lakes Department of Natural Resources and North Temperate Lakes LTER 1944 - 2012 (Reformatted to a Darwin Core Archive)
This data package is formatted as a Darwin Core Archive (DwC-A, event core). For more information on Darwin Core see https://www.tdwg.org/standards/dwc/. This Level 2 data package was derived from the Level 1 data package found here: https://pasta.lternet.edu/package/metadata/eml/knb-lter-ntl/346/6, which was derived from the Level 0 data package found here: https://pasta.lternet.edu/package/metadata/eml/knb-lter-ntl/356/3. The abstract below was extracted from the Level 0 data package and is included for context: This dataset describes long-term (1944-2012) variations in the relative abundance of fish populations representing nine species in Wisconsin lakes. Data were collected by Wisconsin Department of Natural Resource fisheries biologists as part of routine lake fisheries assessments. Individual survey methodologies varied over space and time and are described in more detail by Rypel, A. et al., 2016. Seventy-Year Retrospective on Size-Structure Changes in the Recreational Fisheries of Wisconsin. Fisheries, 41, pp.230-243. Available at: http://afs.tandfonline.com/doi/abs/10.1080/03632415.2016.1160894
North Temperate Lakes LTER: Southern Lake Spiny Water Flea 2016 - present
Beginning in 2016, vertical tows with a special zooplankton net were collected in the lakes of the Yahara River specifically for the invasive Bythotrephes longimanus (spiny water flea). The net has a 400 micrometer mesh with a 0.5 meter diameter opening. Individuals are simply counted, and density is determined to be the number of individuals divided by the total water volume of each tow. The depth of the tow, and therefore the tow volume, varies by lake. Additional sampling for spiny water flea occurred 2009 - 2014 as a part of graduate student research (dataset knb-lter-ntl.343). Spiny water flea are also captured occasionally during our standard zooplankton tows of the southern lakes (knb-lter-ntl.90).
North Temperate Lakes-LTER Core Research Lakes Information
Lake information for our eleven core NTL-LTER study lakes. These include seven in the Trout Lake area (Allequash, Big Muskellunge, Crystal Lake, Crystal Bog, Sparkling, Trout Bog and Trout Lake), and four lakes in the Madison area (Mendota, Monona, Wingra, and Fish). Data includes lake identifiers for various water-body databases, geographic location, general lake characteristics, watershed and shoreline land cover descriptions, and long-term averages of select water quality measurements.
Cascade Project at North Temperate Lakes LTER High Frequency Sonde Data from Spatial Dynamics Experiment 2018 - 2019
High-frequency continuous data for temperature, dissolved oxygen, pH, chlorophyll-a, and phycocyanin in Paul Peter lakes from mid-May to early September for the years 2018 and 2019. Inorganic nitrogen and phosphorus were added to Peter in 2019, while Paul Lake was an unfertilized reference.
Saddle snowfence grid points, Niwot Ridge LTER, Colorado
Point coverage of Saddle snow fence point grid. 1:500 scale. The Saddle snow fence is a 60-meter long, 2.6-meter high fence erected annually in the fall for manipulating winter snowpack and snow drift along a topoedaphic gradient. The fence was first installed in fall of 1993 and is taken down every summer to avoid influencing summer ambient wind. The fence is oriented along a north-south axis, as prevailing winds on Niwot Ridge come from the west, and delineates shrub and moist meadow communities on the windward (west) side and dry meadow communities on the leeward (east) side. The snowfence grid exists within a 60m x 125m area that contains the snowfence. Of the 146 points in the snowfence grid dataset, 84 are located on the leeward (east) side of the snowfence, 56 are located on the windward (west) side of the snowfence, and 6 are control locations outside of but near the snowfence experiment area. See Fig. 4 in Walker et al. (1999) for graphical depiction of the Saddle snow fence grid, snow fence, and vegetation communities within. Snow depth is measured annually at the snow fence grid points, and the grid has been used for locating experimental plots and instrumentation (e.g. see Walker et al. 1993b, Brooks et al. 1995, Walker et al. 1999). This dataset is part of the Saddle grid geographic information system (GIS). Additional information concerning the Niwot Ridge LTER hierarchical GIS can be found in Walker et al. (1993a).
Saddle grid boundary, Niwot Ridge LTER, Colorado
Polygon boundary coverage for Saddle grid. 1:500 scale. This dataset is part of the Saddle grid geographic information system (GIS). Additional information concerning the Niwot Ridge LTER hierarchical GIS can be found in Walker et al. (1993).
Saddle grid stake points, Niwot Ridge LTER, Colorado
Point coverage with the GPS data points for each of the 88 Saddle grid points. 1:500 scale. This dataset is part of the Saddle grid geographic information system (GIS). Additional information concerning the Niwot Ridge LTER hierarchical GIS can be found in Walker et al. (1993).
1:10,000 Vegetation, Niwot Ridge LTER Project Area, Colorado
Vegetation coverage digitized from 1:10,000 map. Vegetation classification follows Komarkova's (1979) classification system (Braun-Blanquet) units. See Peddle and Duguay (1995) for additional information on digitization and map production for this vegetation coverage. See Braun-Blanquet (1964), Komarkova and Webber (1978), and Komarkova (1979, 1980) for additional information on vegetation classification used in this dataset.
Landmarks, Niwot Ridge LTER Project Area, Colorado
Point shapefile of commonly referenced locations at Niwot Ridge, Green Lakes Valley, and surrounding area.
Nitrate (15N) Uptake from samples collected aboard Palmer LTER annual cruises off the Western Antarctic Peninsula, 2012-2014
Nitrate uptake by the bulk phytoplankton community was determined using tracer (<10%) additions of labeled 15-NO3. Samples were collected by Go-Flo from 5 depths 0, 5, 10, 20, 65 m and incubated for 24 h at light levels of 100%, 50%, 25%, 10%, and 0% surface irradiance, respectively.
PIE LTER measurements of the two tallest Phragmites australis stems per five meter interval along transects at the Argilla Rd. salt marsh restoration site (Ipswich, MA) and Rough Meadows reference marsh (Rowley, MA – Stackyard Road area).
The file contains measurements of the two tallest Phragmites australis stems per five meter interval along transects at the Argilla Rd. salt marsh restoration site (Ipswich, MA) and Rough Meadows reference marsh (Rowley, MA – Stackyard Road area). The culvert feeding Argilla Marsh was enlarged in late November 1998, thus data from 1999 onward is considered as representing a hydrologically restored marsh. A long term study not directly part of the PIE LTER, but a companion study related to tidal restrictions and hydrological alterations of salt marshes in the Plum Island ecosystem.
PIE LTER plant species percent cover in quadrats along vegetation transects at the Argilla Rd. salt marsh restoration site (Ipswich) and Rough Meadows reference marsh (Rowley – Stackyard Road area), Massachusetts.
Plant species percent cover in quadrats along vegetation transects at the Argilla Rd. salt marsh restoration site (Ipswich) and Rough Meadows reference marsh (Rowley – Stackyard Road area), Massachusetts. A long term study not directly part of the PIE LTER, but a companion study related to tidal restrictions and hydrological alterations of salt marshes in the Plum Island ecosystem.
PIE LTER geographic information regarding vegetation transects set up at the Argilla Rd. Salt marsh restoration site in Ipswich and a reference marsh (Rough Meadows) in Rowley, Massachusetts.
A description of the vegetation transects set up at the Argilla Rd. Salt marsh restoration site in Ipswich, MA and a reference marsh (Rough Meadows) in Rowley, MA.
PIE LTER plant species presence along vegetation transects at the Argilla Rd. salt marsh restoration site (Ipswich) and Rough Meadows reference marsh (Rowley – Stackyard Road area), Massachusetts.
Plant species presence along vegetation transects at the Argilla Rd. salt marsh restoration site (Ipswich) and Rough Meadows reference marsh (Rowley – Stackyard Road area). A long term study not directly part of the PIE LTER, but a companion study related to tidal restrictions and hydrological alterations of salt marshes in the Plum Island ecosystem..
Birds observed in newly hayed and adjacent reference salt marsh sites in Rowley, MA, August through September 2000 and August 2001, PIE LTER.
Birds observed in newly hayed marsh and adjacent reference marsh sites near Stackyard Rd. and Patmos Rd, Rowley, Massachusetts. August through September 2000 and August 2001.
Descriptive data file for information regarding microbial genetic research in the environs of Plum Island Sound watersheds, PIE LTER, Massachusetts.
This is a descriptive, tabular dataset of publications related to microbial or genomic research conducted within PIE. Assession numbers for genetic sequences generated from PIE samples are provided where available, followed by a very brief description of analysis type and study objectives. Sampling locations within PIE, sampling dates, and habitat type (sea water, fresh water, sediment, marsh) are also given. Environmental data are included in some publications and are listed here (if brief) or availability is described. Links to sequence archives are given in Methods.
End of growing season percent cover and biomass data for hayed vs reference sites, Rowley, MA, PIE LTER
End of growing season percent cover and biomass data of marsh vegetation in hayed and reference marsh sites near Stackyard Rd. and Patmos Rd, Rowley, Massachusetts.
PIE LTER study of marsh vegetation percent cover and biomass at the end of the growing season at Greenwood Creek, Ipswich, MA effluent enrichment and Clubhead Creek, Rowley, MA reference sites
End of growing season vegetation percent cover and biomass data for effluent enrichment vs. reference marsh sites. Nutrient enrichment comes from the Ipswich Wastewater Treatment Facility on Greenwood Creek in Ipswich. The marsh around Clubhead Creek, Rowley, MA was used as a reference.
Surveys of salt marsh wading birds and shorebirds in Massachusetts at Plum Island Sound, PIE LTER and portions of Essex Bay
This data set is part of a study of how wading birds, primarily Great and Snowy Egrets are using different estuarine habitats at Plum Island Sound. It contains the results of count surveys of wading birds in the salt marshes of the Plum Island Estuary and parts of adjacent Essex Bay. Surveys were carried out from May to October in 2012 and 2013, additional sampling occurred in July 2014 and summer of 2018. Bird counts took place from 37 observation points around the bay and documented species, estimated distance from observer, habitat of each individual bird counted and its behavior (feeding, resting, etc.).
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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.