489 datasets found
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Federal
SGS-LTER Earthwatch - In situ Nitrogen Mineralization on Native, Abandoned and Cultivated Fields in eastern Colorado, USA in 1991
Department of Agriculture —
This data package was produced by researchers working on the Shortgrass Steppe Long Term Ecological Research (SGS-LTER) Project, administered at Colorado State... -
Federal
NRSA data 2000-2014 Deposition Largest N Source Lin et al.
U.S. Environmental Protection Agency —
NRSA is part of EPA’s National Aquatic Resource Surveys which samples different surface waters on a 5-year cycle during the growing season. For logistical reasons,... -
Federal
Data on annual total nitrogen loads and watershed characteristics used to develop a method to estimate the total nitrogen loads in small streams
Department of the Interior —
This USGS Data Release represents the data used to develop multiple linear regression models for estimating the loads of total nitrogen in small streams. Recursive... -
Federal
GPS data of plots for study along Pocomoke River, Maryland, evaluating the effectiveness of floodplain reconnection on water quality functions
Department of the Interior —
Geospatial coordinates of plots. -
Federal
Pacific Island Network 2007-2023 Water Quality Data from 17 Projects as of 2025-07-25
Department of the Interior —
This data package was created 2025-07-25 13:47:37 by NPSTORET and includes selected project, location, and result data. Data contained in the Pacific Island Network... -
Federal
Chesapeake Bay River Input Monitoring Network 1985-2020: WRTDS input data
Department of the Interior —
Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed have been calculated using monitoring... -
Federal
Commercial Nitrogen Fertilizer Purchased
U.S. Environmental Protection Agency —
Amounts of fertilizer nitrogen (N) purchased by states in individual years 2003, 2005, 2007, 2009 and 2011, and the % change in average amounts purchased per year... -
Federal
NOAA RESTORE Science Program: Effects of nitrogen sources and plankton food-web dynamics on habitat quality for the larvae of Atlantic Bluefin Tuna in the Gulf of Mexico - biogeochemistry, dissolved inorganic nutrient, mesozooplankton, phytoplankton, and bacteria data from 2017-05-10 to 2018-05-19
National Oceanic and Atmospheric Administration, Department of Commerce —
This dataset presents results from surface-tethered drifting sediment traps, zooplankton net tows, dissolved inorganic nutrient concentration analyses made on water... -
Federal
Nitrogen, phosphorus, and suspended-sediment loads and trends measured at the Chesapeake Bay River Input Monitoring stations: Water years 1985-2020
Department of the Interior —
Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in major rivers across the Chesapeake Bay watershed have been calculated using monitoring... -
Federal
Nitrogen concentrations and loads and seasonal nitrogen loads in selected Long Island Sound tributaries, water years 1995-2016
Department of the Interior —
This U.S. Geological Survey data release presents tabular data on nitrogen concentrations and loads for multiple nitrogen species, and river discharge data used in... -
Federal
Vadose Zone Corvallis
U.S. Environmental Protection Agency —
This field study was designed to test different methods for measuring water and nutrient transport throughout the vadose zone. A pilot study was implemented to... -
Federal
LMR watershed temporal DNA metabarcoding 2016 study
U.S. Environmental Protection Agency —
LMR watershed temporal DNA metabarcoding 2016 study. This dataset is associated with the following publication: Smucker, N., E. Pilgrim, H. Wu, C. Nietch, J. Darling,... -
Federal
Improved mapping of coastal salt marsh habitat change at Barnegat Bay (NJ, USA) using object-based image analysis of high-resolution aerial imagery_data
U.S. Environmental Protection Agency —
Data for the classification of coastal land-cover of Barnegat Bay (Fig. 1) were downloaded from the USGS Earth Resources Observation and Science (EROS) Center via the... -
Federal
Specific Water Quality Sites for Sanpete County, Utah
Department of the Interior —
This map shows specific water-quality items and hydrologic data site information which come from QWDATA (Water Quality) and GWSI (Ground Water Information System).... -
Federal
Stable isotope analysis of San Francisco Bay-Delta primary producers (1990-2000)
Department of the Interior —
This dataset is a compilation of multiple studies over different periods and in many environments as described below. These data were collected to measure temporal... -
Federal
Nutrient balances, river loads, and a counterfactual analysis to determine drivers of Mississippi River nitrogen and phosphorus loads between 1975 and 2017
Department of the Interior —
This dataset consists of input and output datasets for estimating trends in river loads using the Weighted Regressions on Time Season and Discharge (WRTDS) model. The... -
Federal
Do Prescribed Burns of Phragmites Australis Increase Denitrification and Carbon Sequestration? - NERRS/NSC(NERRS Science Collaborative)
National Oceanic and Atmospheric Administration, Department of Commerce —
Coastal managers in Delaware examined whether biochar input from prescribed burns restores ecosystem services after removal of Phragmites australis, an invasive grass... -
Federal
Pre-restoration soils P release during experimental flood in laboratory and physico-chemistry data for study along Pocomoke River, Maryland, evaluating the effectiveness of floodplain reconnection on water quality function.
Department of the Interior —
Input and release of phosphate, nitrate, and ammonium measured using stacked ion-exchange resin bags on top of soil in floodplains along Pocomoke River, Maryland, in... -
Federal
SGS-LTER Effects of water and nitrogen additions on carbon and nitrogen in shortgrass ecosystems on the Central Plains Experimental Range, Nunn, Colorado, USA 1997-2011, ARS Study Number 143
Department of Agriculture —
This data package was produced by researchers working on the Shortgrass Steppe Long Term Ecological Research (SGS-LTER) Project, administered at Colorado State... -
Federal
Chesapeake Bay Nontidal Network 1985-2014: WRTDS Output Data
Department of the Interior —
Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in rivers across the Chesapeake Bay watershed have been calculated using monitoring data...
489 datasets found