Thumbnail Icon Science Keywords > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NITROGEN COMPOUNDS


Refine by Category
 
Refine by Full text

 

136 Titles Match Your Query
Showing 1 through 50 of 136 Next
1. LBA-ECO ND-30 Water Chemistry, Rainfall Exclusion, km 67, Tapajos National Forest [ND30_REE_WATER_CHEMISTRY]
This data set reports the results of chemical analyses of rainfall, throughfall, litter leachate, and soil water samples collected before, during, and after a rainfall exclusion experiment conducted ...


2. LBA-ECO CD-06 Carbon Cycling in Rivers in Amazonas and Acre, Brazil: 2005-2006 [CD06_CARBON_RESPIRATION]
This data set provides measured and calculated variables describing the carbon pools in river waters, CO2 respired from the water and total amount of CO2 evaded, dissolved oxygen isotopes (delta 18O-O2), ...


3. Bacterioplankton dynamics in Antarctic lakes [ASAC_2154]
---- Public Summary from Project ---- Bacteria are an important part of the planktonic community of lakes and other aquatic environments. They use dissolved organic carbon in the water as a ...


4. Europe's Waterbase - Lakes [EEA_WATERBASE_LAKES]
Waterbase is the generic name given to the EEA's databases on the status and quality of Europe's rivers, lakes, groundwater bodies and transitional, coastal and marine waters, and on the quantity ...


5. Estuarine and Coastal Water Quality in Ireland Dataset [Ireland_EPA_H2O_Quality]
The dataset comprises a series of datafiles, in spreadsheet format (MS Works and MS Excel), relating to each of approximately 200 field surveys carried out in 17 estuarine and coastal water bodies. ...


6. Compendium of Environmental Sustainability Indicator Collections: Complete Collection, Version 1.1 [CIESIN_SEDAC_CESIC_COMPLETE_V11]
The Compendium of Environmental Sustainability Indicator Collections contains 426 indicators for 239 countries from five major environmental sustainability indicator efforts: the 2006 Environmental ...


7. 2000 Pilot Environmental Sustainability Index (ESI) [CIESIN_SEDAC_ESI_2000]
The 2000 Pilot Environmental Sustainability Index (ESI) is an exploratory effort to construct an index that measures the ability of a nation's economy to achieve sustainable development, with the ...


8. Pilot 2006 Environmental Performance Index (EPI) [CIESIN_SEDAC_EPI_2006]
The Pilot 2006 Environmental Performance Index (EPI) centers on two broad environmental protection objectives: (1) reducing environmental stresses on human health, and (2) promoting ecosystem vitality ...


9. Lake Fryxell benthic ecology [K081_2009_2013_NZ_2]
In 2012/2013 we collected Samples and data collected along a depth transect at Lake Fryxell. This samples were collected by a dive team. The samples included water chemistry and microbial mat sampling. ...


10. Geochemistry of Wetland Sediments from South Florida [USGS_SOFIA_metorem]
This project is examining (1) sources of nutrients (nitrogen and phosphorus), sulfur, and carbon to wetlands of south Florida, (2) the important role of chemical and biological processes in the wetland ...


11. Field measurement, major ion, and nutrient data for water from the Big Cypress National Preserve [USGS_SOFIA_field_data_bicy]
The data catagories include site name, date, time, station ID, record #, agency analyzing sample, agency collecting sample, discharge (daily mean), gage height, lab spec condition, field spec condition, ...


12. Concentration of Nitrogen (NO3+NO2) in Rivers, Lakes and Groundwater [geodata_1825]
In water, nitrogen (N) occurs as nitrates (NO3-) and nitrites (NO2-). These are naturally occurring ions that are part of the nitrogen cycle. Nitrate is used mainly in inorganic fertilizers, and sodium ...


13. GIS Coverage for the National Water-Quality Assessment (NAWQA) Program Retrospective Database for Nutrients in Surface Water: Monitoring Locations [NAWQAHIS]
The retrospective database is a compilation of historical water-quality and ancillary data collected before NAWQA Study Units initiated sampling in 1993. This coverage contains the point locations ...


14. Chesapeake Bay Program Nutrient Point Source Database [CBP_PSDB]
The Chesapeake Bay Program Nutrient Point Source Database contains data from about 600 nutrient dischargers in the Bay watershed. This database provides facility information, average flow data, average ...


15. European Diatom Database-Caspian Saline Lake Dataset [uk_nc_eddi_caspian]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


16. European Diatom Database-East African Dataset [uk_nc_eddi_africae]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


17. European Diatom Database-Finnish Dataset [uk_nc_eddi_Finland]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication ...


18. European Diatom Database-Italian Mountain Lake Dataset [uk_nc_eddi_alpi]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


19. European Diatom Database-Kola Peninsula pH Dataset [uk_nc_eddi_kola]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication ...


20. European Diatom Database-Norwegian Dataset [uk_nc_eddi_Bergen]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


21. European Diatom Database-Spanish Mountain Lake Dataset [uk_nc_eddi_alps]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


22. European Diatom Database-Spanish Saline Lake Dataset [uk_nc_eddi_spain]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


23. European Diatom Database-Surface Waters Acidification Programme [uk_nc_eddi_swap]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


24. European Diatom Database-UCL Mountain Lake Dataset [uk_nc_eddi_alpu]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


25. European Diatom Database-Welsh TP Dataset [uk_nc_eddi_wales]   PARENT DIF
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


26. Maryland Biological Stream Survey [MD_DNR_BSS]
The Maryland Biological Stream Survey developed as a response to questions raised by the Maryland Synoptic Stream Survey of 1987 (see "Acid Deposition" pages for full discussion) and the MBSS Pilot ...


27. Surface-Water-Quality Assessment of the Yakima River Basin, Washington [WRIR_98_4113]
Surface-water-quality conditions were assessed in the Yakima River Basin, which drains 6,155 square miles of mostly forested, range, and agricultural land in Washington. The Yakima River Basin is ...


28. Lake Water Quality Monitoring in Washington State [wa_de_lakewaterquality]
Ecology has monitored rivers and streams since before 1959 and, due largely to federal grants, were able to monitor lakes from 1989 through 1999. During that period, they collected ...


29. Biological Atlas of the Arctic Seas 2000-Plankton of the Barents and Kara Seas [NOAA_bioatlas_arctic]
Presented are (a) physical and biological data collected during 158 scientific cruises carried out in the period 1913-1999 and (b) data on phytoplankton collected in 1994-1999 during cruises ...


30. Major-Ion, Nutrient, and Trace-Element Concentrations in the Steamboat Creek Basin [WIR_98_4105]
In September 1996, a water-quality study was done by the U.S. Geological Survey, in coordination with the U.S. Forest Service, in headwater streams of Steamboat Creek, a tributary to the North Umpqua ...


31. Modeling Water Quality in the Tualatin River, Oregon, 1991-1997 [WRIR_01_4062]
The calibration of a model of flow, temperature, and water quality in the Tualatin River, Oregon, originally calibrated for the summers of 1991 through 1993, was extended to the summers of 1991 through ...


32. River and Stream Water Quality Monitoring in Washington State [wa_de_riverandstreamwaterqual]
The Washington State Department of Ecology has conducted monthly water quality monitoring at hundreds of stream stations throughout the state since before 1959. Currently, the Stream Monitoring Unit ...


33. Upper Klamath Lake Basin Nutrient-Loading Study-Assessment of Historic of Flows in the Williamson and Sprague Rivers [WRIR_98_4198]
The Williamson River Basin, located in south-central Oregon, has a drainage area of approximately 3,000 square miles. The Sprague River, which flows into the Williamson River Basin, has a drainage ...


34. Distribution of Dissolved Pesticides and Other Water Quality Constituents in Small Streams, and their Relation to Land Use, Willamette River Basin, Oregon [WRIR_97_4268]
Water quality samples were collected at sites in 16 randomly selected agricultural and 4 urban subbasins as part of Phase III of the Willamette River Basin Water Quality Study in Oregon during 1996. ...


35. PRE-LBA CARBON IN THE AMAZON RIVER EXPERIMENT (CAMREX) DATA [PRE-LBA_CAMREX]
The objective of CAMREX (Carbon in the Amazon River Experiment) project which was conducted from 1982 through 1991, was been to define by mass balances and direct measurements those processes which ...


36. Aquatic Cycling of Mercury in the Everglades Project Database [USGS_SOFIA_ACME_DB]
Between 1995 and 2008, the Aquatic Mercury Cycling in the Everglades (ACME) project examined in detail the biogeochemical parameters that influence methylmercury (MeHg) production in the Florida Everglades. ...


37. Zooplankton of the Arctic Seas 2002 on CD-ROM [NOAA_ATLAS_ARCTIC_2002]
Zooplankton of the Arctic Seas 2002 This disc contains physical and biological data from the Arctic and sub-Arctic regions from the Barents Sea to the Northwest Pacific. The data is based on 2,045 ...


38. Characterisation of aquatic resources in McMurdo Sound region of Antarctica: water chemistry, biological identity and genomic samples [K081_2009_2010_NZ_1]
Aquatic environments in Antarctica have changes over time with a changing climate. Small aquatic zones on the surface of glaciers ablation zones are comparatively constant and represent perhaps the ...


39. State of the Chesapeake Bay Report [CBF_StateofChesapeake]
The State of the Bay Report is an annual report that provides the results on the health and environmental condition of the Chesapeake Bay. To create the ...


40. Water-Quality Assessment of the Potomac River Basin: Water-Quality and Selected Spatial Data, 1992-1996 [CBP_PNAQWA]
The U.S. Geological Survey (USGS) implemented the National Water-Quality Assessment (NAWQA) Program to describe the status and trends in the quality of the Nation's surface water and ground water ...


41. BOREAS TE-01 SSA-FEN SOIL PROFILE NUTRIENT DATA [BOREAS_TE1FENNT]
The BOREAS TE-01 team collected various data to characterize the soil-plant systems in the BOREAS SSA. Particular emphasis was placed on nutrient biochemistry, the stores and transfers of organic ...


42. Risk of nitrate contamination in ground waters of the United States-- A national perspective [USGS_gwrisk]
This map was designed to present patterns of risk for nitrate contamination at large regional or national scales. Knowing where and what type of risks to ground water exist can alert water-resources ...


43. European Diatom Database-Combined pH dataset [uk_nc_eddi_ph]   PARENT DIF
This is a composite dataset derived from the following original datasets: Dataset Id Name N ALPI Italian mountain lake dataset 31 ALPS Spanish mountain lake dataset 28 ALPU ...


44. European Diatom Database - NW Europe Dataset [uk_nc_eddi_NWEuro]
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


45. European Diatom Database - Northern Irish Dataset [uk_nc_eddi_NI]
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


46. European Diatom Database-Danish TP Dataset [uk_nc_eddi_DK]
The European Diatom Database (EDDI) is a web-based information system designed to enhance the application of diatom analysis to problems of surface water acidification, eutrophication and climate ...


47. Influence of Tillage Management on Soil Quality and Fate of Agricultural Nitrogen [USDA.ARS.NRI.ECL.TillMngt]
(adapted from project description) Problem: The use of no-tillage cropping systems has increased as their advantages in sustainable crop production have been documented. This includes better maintenance ...


48. Eurasian River Historical Nutrient and Sediment Flux Data [ARCSS092]
The Russian Federal Service for Hydrometeorology and Environmental Monitoring (Roshydromet) measured sediment fluxes and nutrient concentrations of sixteen Russian rivers between 1938 and 2000. This ...


49. Water Quality in the Yukon River Basin, Alaska, Water Years 2006-2008 [USGS_OFR_2010_1241]
The Yukon River Inter-Tribal Watershed Council and the U.S. Geological Survey developed a water-quality monitoring program to address a shared interest in the water quality of the Yukon River and ...


50. Hydrological and hydrochemical observation status in the pan-Arctic drainage basin [SMHI_IPY_BRING01]
By synthesizing and analyzing all openly accessible water discharge and water quality data, we present in this dataset an updated, quantitative picture of the status of observational data on hydrological ...


Showing 1 through 50 of 136 Next
Click here for a static view of records.

Link to Web Site