17 datasets found
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Federal
LTAR Phosphorus Budget Summary
Department of Agriculture —
Surface agronomic P budgets for 61 cropping systems using field-scale P flux data across 24 research sites in the United States and Canada. Data are representative of... -
Federal
Chemical Data From 40 Years of Monitoring a Treated-Wastewater Groundwater Plume in a Sand and Gravel Aquifer, Cape Cod, Massachusetts, 1978-2018 (ver. 1.1, April 2025)
Department of the Interior —
This U.S. Geological Survey data release provides a comprehensive dataset of water-quality data and sampling-site characteristics collected in 1978–2018 during a... -
Federal
Effects of nitrapyrin (0 to 32 micrograms per liter) on oxidation of ammonia by a diverse nitrifier-enriched microbial community
Department of the Interior —
These data were collected to determine the effect of nitrapyrin, a commercial nitrification inhibitor, on nitrification by a diverse nitrifier-enriched microbial... -
Federal
Quantification of nitrogen-fixing microorganisms (targeting nifH gene) in Cladophora algae by quantitative polymerase chain reaction (qPCR)
Department of the Interior —
Data were collected to determine the abundance of nitrogen-fixing microorganisms in Cladophora algae growing on rocks, breakwall structures, or submerged dreissenid... -
Federal
Physical, Chemical, and Invertebrate Data from Chipp North Pond Manipulations, North Slope, Alaska, 2013
Department of the Interior —
These data are in five tables related to a series of ponds, visited weekly over the summer of 2013, in the Chipp River Basin on the Arctic Coastal Plain of northern... -
Federal
Poultry production houses identified using aerial imagery from 1968 to 2018 in the Upper Choptank Watershed
Department of the Interior —
Dataset contains a polygon shapefile representing poultry houses in the Upper Choptank watershed in Queen Anne's County, Maryland, and Kent County, Delaware. -
Federal
Water Quality Analysis Simulation Program (WASP) eutrophication model for the Barnegat Bay-Little Egg Harbor Estuary, New Jersey, USA.
Department of the Interior —
The U.S. Geological Survey (USGS) developed and calibrated a Water Quality Analysis Simulation Program (WASP) model (version 8.4) for the Barnegat Bay-Little Egg... -
Federal
Gulf of Alaska Shelf and Slope Iron and Nitrate Data, Copper River Region, 2010
Department of the Interior —
These are data from cruises carried out in April, May and July 2010 from the Copper River (AK) mouth to beyond the shelf break, approximately 150 km from shore. The... -
Federal
Geochemical data supporting analysis of geochemical conditions and nitrogen transport in nearshore groundwater and the subterranean estuary at a Cape Cod embayment, East Falmouth, Massachusetts, 2013
Department of the Interior —
This data release provides analytical and other data in support of an analysis of nitrogen transport and transformation in groundwater and in a subterranean estuary... -
Federal
Total carbon, organic carbon, and nitrogen data from a subset of soils within the Yukon River Basin
Department of the Interior —
Total and organic carbon values from soil samples taken from the Yukon River Basin, Alaska. These samples were used to create a relationship between total carbon and... -
Federal
Phosphorus, nitrogen, carbon, calcium, pH, and dissolved oxygen data from incubations of Colorado River water and sediment and associated ambient river water measurements
Department of the Interior —
Lake Powell retains most of the phosphorus that it receives, leading to downstream phosphorus limitation. These data were compiled to examine controls on phosphorus... -
Federal
Geochemical Data Supporting Analysis of Fate and Transport of Nitrogen in the Nearshore Groundwater and Subterranean Estuary near East Falmouth, Massachusetts, 2015-2016
Department of the Interior —
Geochemical data were obtained to investigate the fate and transport of nitrogen in a subterranean estuary near East Falmouth, Massachusetts. The goal of this... -
Federal
Global gridded dataset of terrestrial biological nitrogen fixation across natural and agricultural biomes: High-resolution rasters
Department of the Interior —
This dataset includes global rasters of terrestrial biological nitrogen fixation (BNF) rates (in kgN/(ha*y)) for each major N-fixing niche in natural biomes (trees,... -
Federal
Lake depth profile, water quality, sediment, periphyton, tadpole (Pseudacris regilla), and landscape data from six lakes and two stream sites of the Tokopah Basin in Sequoia National Park, California, 2021-2022
Department of the Interior —
This dataset includes a collection of files related to a project investigating the ecology of six lakes in the Tokopah Basin. The primary purpose of the research... -
Federal
Estimates of burrowing shrimp densities and habitat area in Yaquina estuary, Oregon, in 2002
U.S. Environmental Protection Agency —
Estimates of the abundance and habitat area for two species of burrowing shrimps in Yaquina Bay estuary, Oregon. This dataset is associated with the following... -
Federal
Termite casing data from the long-term Small Mammal Exclosure Study (SMES) at Jornada Basin LTER, 1995-2005
Department of Agriculture —
This data package contains termite activity data in plots with a range of herbivore exclusion treatments on Jornada Experimental Range (JER) and Chihuahuan Desert... -
Federal
A global dataset of terrestrial biological nitrogen fixation
Department of the Interior —
This dataset includes field measurements of biological nitrogen fixation (BNF) in all major N-fixing niches across natural terrestrial biomes globally. The dataset...
17 datasets found