Search Help
Did you find what you were looking for? Yes No
Thumbnail Icon [Keyword='Nitrogen']


Refine by Category
 
Refine by Full text

 

100 Titles Match Your Query
Showing 1 through 50 of 100 Next
1. UV climate over the Southern Ocean south of Australia, and its biological impact - Particulate Organic Carbon (POC) results [ASAC_2210_POC]
Minicosm design: Three successive experiments to a maximum incubation of 14 days were performed from mid November to early January in the summer of 2002/03 in a temperature controlled shipping container ...


2. Long-Term Ecological Research (LTER)/CDR014: Monoculture and Competition Gardens at Cedar Creek Natural History Area [LTER_CDR014]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR014 [Summary adapted from the LTER Core Data Set Catalog]: This experiment ...


3. Long-Term Ecological Research (LTER)/CDR015: Effect of NH4NO3 and Light Shading on Vegetation (UNFLN) at Cedar Creek Natural History Area [LTER_CDR015]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR015 [Summary adapted from the LTER Core Data Set Catalog]: The purpose of ...


4. Long-Term Ecological Research (LTER)/CDR017: Effect of Nitrogen Levels on Vegetation at Cedar Creek Natural History Area [LTER_CDR017]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR017 [Summary adapted from the LTER Core Data Set Catalog]: There are four ...


5. Long-Term Ecological Research (LTER)/HBR012: Revegetation Surveys on a Disturbed Watershed (WS 2) at the Hubbard Brook [LTER_HBR012]
LTER - Long-Term Ecological Research Program/Hubbard Brook Experimental Forest (HBEF). LTER/HBR012: During the winter of 1965-1966, watershed 2 at HBEF was clearcut and all trees left on site. During ...


6. Interplanetary Monitoring Platform (IMP-8) Cosmic Ray Nuclear Composition (CRNC) Data [IMP8_UNH]
IMP-8 (IMP-J) was launched by NASA on October 26, 1973 to measure the magnetic fields, plasmas, and energetic charged particles (e.g., cosmic rays) of the Earth's magnetotail and magnetosheath and ...


7. Long-Term Ecological Research (LTER)/HFR006: Hurricane Simulation [LTER_HFR006]
HFR006: Trees will be pulled down to simulate hurricane damage in two mixed hardwood plots: (1) 0.35 ha, September 1989; (2) 0.6 ha, September 1990. In the first plot, the extent of damage, changes ...


8. Long-Term Ecological Research (LTER)/KBS003: Kellogg Biological Station Baseline Variability Study [LTER_KBS003]
LTER - Long-Term Ecological Research Program/Kellogg Biological Station (KBS) LTER/KBS003 [Summary adapted from the LTER Core Data Set Catalog]: Results from a study of spatial variability conducted ...


9. Long-Term Ecological Research (LTER)/NTL004: Sediment Deposition in North Temperate Lakes Primary Study Lakes [LTER_NTL004]
LTER - Long-Term Ecological Research Program/North Temperate Lakes (NTL) LTER/NTL004 [Summary adapted from the LTER Core Data Set Catalog]: Settling particulate matter is collected using ...


10. A Spatial Model of Atmospheric Deposition For the Northeastern U.S. [EOSWEBSTER_CLIMCALC_NE_US]   PARENT METADATA
CLIMCALC is a simple model of physical and chemical climate for the northeasten United States (New York and New England) that can be incorporated into a geographic information system (GIS) for integration ...


11. A Study of the Nitrogen-fixing Microbiota of Macquarie Island Plant Communities [ASAC_194]
The nitrogen fixing biota of Macquarie Island are dominated by cyanobacteria growing epiphytically or symbiotically with plants or lichens. Highest rates of acetylene reduction (N-fixation) were found ...


12. Acidic Surface Waters of the Conterminous United States GIS Data for the EPA Clean Air Mapping and Analysis Program (C-MAP) [A_Water_EPA]
This coverage contains information about estimates of current acid-base status of surface waters in National Surface Water Survey regions in the conterminous U.S., as reported in the National Acid ...


13. Agricultural, Geographic and Population data for Counties in the Contiguous United States [EOSWEBSTER_US_County_Data]   CHILD METADATA
Annual crop data from 1972 to 1998 are now available on EOS-WEBSTER. These data are county-based acreage, production, and yield estimates published by the National Agricultural Statistics ...


14. Analysis of Factors Affecting Historical Dissolved Oxygen Trends in Western Long Island Sound [LISES_HistDOtrends]
The purpose of this dataset is to assess the historical decline in dissolved oxygen concentrations in the bottom region of the Western Long Island Sound. The primary factors ...


15. Analysis: low oxygen concentrations and biogenic elements associated with Equatorial Subsurface water, and variability in Humboldt Current System off Chile [GLOBEC_039_CHL_003]   PARENT METADATA
Analysis of the distribution of low oxygen concentrations and biogenic elements associated with the Equatorial Subsurface water and characterization of seasonal and inter-annual variability in the ...


16. Askov Long-Term Experiments on Animal Manure and Mineral Fertilizers - Lermarken [Denmark.Askov]
The ASKOV Long-term Experiments on Animal manure and Mineral Fertilizers began in 1894. This area was first cultivated around 1800, and was previously open mixed heath and deciduous scrubland. The ...


17. Atlantic DSDP Lower Cretaceous Carbonate Geochemistry Data [NOAA_NCDC_PALEO_1999-031]
Striking cyclic interbeds of laminated dark-olive to black marlstone and bioturbated white to light-gray limestone of Neocomian (Early Cretaceous) age, the Blake-Bahama Formation, have been recovered ...


18. Bryophyte species composition over moisture gradients in the Windmill Islands, East Antarctica; development of a baseline for monitoring climate change impacts [ASAC_1313_Baseline]   PARENT METADATA
This metadata record describes supplementary material to accompany the listed publication, and the data described in the paper and the supplementary material relates to AAS (ASAC) project 1313, as ...


19. CEAMARC marine sediment samples [CEAMARC-200708_V3_MARINE_SEDIMENT_SAMPLES]   PARENT METADATA
Marine sediment samples were obtained from box corer, Smith-MacIntyre and Van Veen grabs. Samples were named by: 1. CEAMARC site (e.g. 16) 2. Instrument (e.g. box corer = BC; Smith-MacIntyre = GRSM; ...


20. CTD Niskin data for the BROKE_WEST survey [BROKE-West_CTD_Niskin]   PARENT METADATA
3 litres of seawater were collected every 2nd CTD (conductivitiy, temperature and depth) cast on every CTD transect of the BROKE-West voyage. 7 CTD transects were completed on the BROKE-West voyage, ...


21. Carbon Sequestration by Switchgrass Managed as an Energy Crop [USDA0395]
The objective of the "Carbon Sequestration by Switchgrass Managed as an Energy Crop" dataset is to monitor carbon sequestration over time in switchgrass and to compare the economic and carbon sequestration ...


22. Carbon-Isotopic Composition of Atmospheric CO2 since the Last Glacial Maximum [NSIDC-0108]
These data describe the concentration and carbon-isotopic composition (d13CO2) of atmospheric CO2 from air trapped in ice between 27,000 and 1,300 years before present from Taylor Dome, Antarctica. ...


23. Casco Bay Air Deposition Monitoring Project [gomc_97]   PARENT METADATA
The Casco Bay Estuary Partnership is devoted to protecting and restoring the water quality, and fish and wildlife habitat of the Casco Bay ecosystem, while ensuring compatible human uses. ...


24. 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 ...


25. Chesapeake Bay Program Water Quality Database [CBP_WQDB]
The Water Quality Monitoring database is a compilation of data for 19 parameters at 49 mainbay and approximately 150 tributary stations for Maryland, Virginia, and the District of Columbia ...


26. Chesapeake Bay Program Watershed Model Scenario Output Database [CBP_WSM43]
The Watershed model is an application of HSPF (Hydrologic Simulation Program - Fortran ) run on a unix workstation. The model divides the 64,000 square mile Chesapeake Bay drainage basin into 87 model ...


27. Collaborative Research: Molecular Level Characterization of Organic Matter in Ice Cores using High-resolution FTICR mass spectrometry [hatcher_0739684]
This award supports a project to fully develop the analytical protocols needed to exploit a relatively new technique for the analysis of soluble organic matter in ice core samples. The technique couples ...


28. Concentration and Isotopic Composition of O2 and N2 in Trapped Gases of the Vostok Ice Core [NSIDC-0107]
These data describe the d18O of O2, d15N of N2, d18Oatm, and O2/N2 ratios of trapped gases in the Vostok ice core from East Antarctica. The investigator used a mass spectrometer to measure gas concentrations ...


29. County-based estimates of nitrogen and phosphorus content of animal manure in the United States for 1982, 1987, and 1992. [USGS_manure]
These estimates are intended for large-scale ground- and surface-water analyses of nutrient sources or changes in these sources. These data on nutrients in manure can be compared to fertilizer inputs ...


30. Crop Modeling Data Sets [USDA0076]
Provide database to build process-level crop simulation models. Database is for all crops, but focus is currently on cotton. Crop, plant and weather data are collected. Collection Organization: ...


31. Daily Estuarine Surface Water Nutrient And Water Quality, Suspended Sediment, and Chlorophyll a Data for the North Inlet Estuary, 1978-1993 [baruch_1978]
A one 1000 ml (one Liter) water sample was collected daily (at approximately 1000 hrs EST - but see note below in section 1.2.3 Supplemental Information) at a depth of 0.5 meter below the water's ...


32. Effects of CO2 and Nitrogen Fertilization on Growth and Nutrient Content of Juvenile Ponderosa Pine (ORNL/CDIAC-107, NDP-061A) [CDIAC_NDP061A]
This data set presents measured values of plant diameter and height, biomass of plant components, and nutrient (carbon, nitrogen, phosphorus, sulfur, potassium, calcium, magnesium, boron, copper, ...


33. Elemental and isotopic composition of trapped gases in the horizontal Moulton ice core [Moulton_Gas_Data]
Data are included for the elemental and isotopic composition of trapped gases in the A, E and F trenches. Specifically, the d15N of N2, d18O of atm O2, dO2/N2, dAr/N2, total gas content ...


34. Emissions of NOX - Total (National Reports, UNFCCC) [geodata_1846]
Nitrogen dioxide is a poisonous, pungent gas formed when nitric oxide combines with hydrocarbons and sunlight, producing a photochemical reaction. These conditions occur in both natural and anthropogenic ...


35. Fertilizer Use and Price Statistics, 1964-1991 [USDA0048]
The data contained on this disk includes most of the historical information pertaining to State and U.S. fertilizer use statistics for four major crops: corn, cotton, soybeans, and wheat from 1964 ...


36. 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 ...


37. Growth and Chemical Responses to CO2 Enrichment - Virginia Pine (Pinus Virginiana Mill.), CDIAC NDP-009 [CDIAC_NDP9]
Growth and chemical responses of Virginia pine grown in open-top growth chambers at elevated CO2 concentrations (+0, +75, +150, +300, +600 ppmv) were evaluated over a four-month period. The seedlings ...


38. Integrated Forest Study (IFS): Atmospheric Deposition and Forest Nutrient Cycling: Oak Ridge Loblolly Site [IFS_OAKRIDGE_SITE]
The Integrated Forest Study (IFS) was a project to evaluate the effects of atmospheric deposition on nutrient cycling in forest ecosystems. Deposition and nutrient cycling were monitored at 17 forested ...


39. LTER Georgia Coastal Ecosystems - Plant community response to fertilization at Sapelo Island, Georgia [newpag1_LTER_GCE_PLT_GCED_0409]   PARENT METADATA
Parallel fertilization experiments were performed in five different types of perennial plant mixtures found in the salt marsh habitat around Sapelo Island, Georgia, from May 1996 to September 1997. ...


40. Long Island Sound Interstate Sanitation Commission Data [ISC_ISCdata]
Monitor water quality on a monthly basis over the full annual cycle.


41. Long Island Sound Study [epa_longislandsound]
The Long Island Sound Study (LISS) is a cooperative effort involving researchers, regulators, user groups and other concerned organizations and individuals. These people are working together to protect ...


42. Long-Term Ecological Research (LTER)/CDR003: Effects of Nutrients on Vegetation at Cedar Creek Natural History Area [LTER_CDR003]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR003 [Summary adapted from the LTER Core Data Set Catalog]: This experiment ...


43. Long-Term Ecological Research (LTER)/CDR010: Old Field Survey (OFIELD) at Cedar Creek Natural History Area [LTER_CDR010]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR010 [Summary adapted from the LTER Core Data Set Catalog]: The purpose of ...


44. Long-Term Ecological Research (LTER)/CDR012: Effects of NH4NO3 and pH on Microorganism Populations (SORG) at Cedar Creek Natural History Area [LTER_CDR012]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR012 [Summary adapted from the LTER Core Data Set Catalog]: The purpose of ...


45. Long-Term Ecological Research (LTER)/CDR013: Phenology of Fertilization (PHEN) at Cedar Creek Natural History Area [LTER_CDR013]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR013 [Summary adapted from the LTER Core Data Set Catalog]: The purpose of ...


46. Long-Term Ecological Research (LTER)/CDR016: Old Field Allocation Survey (OFALLOC) at Cedar Creek Natural History Area [LTER_CDR016]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR016 [Summary adapted from the LTER Core Data Set Catalog]: Objective: to ...


47. Long-Term Ecological Research (LTER)/CDR018: Plant Competition Under Different Nitrogen Levels at Cedar Creek Natural History Area [LTER_CDR018]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR018 [Summary adapted from the LTER Core Data Set Catalog]: This is the new ...


48. Long-Term Ecological Research (LTER)/CDR019: Tree Competition at Cedar Creek Natural History Area [LTER_CDR019]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR019 [Summary adapted from the LTER Core Data Set Catalog]: This experiment ...


49. Long-Term Ecological Research (LTER)/CDR020: Legume Competition at Cedar Creek Natural History Area [LTER_CDR020]
LTER - Long-Term Ecological Research Program/Cedar Creek Natural History Area (CDR) LTER/CDR020 [Summary adapted from the LTER Core Data Set Catalog]: This experiment ...


50. Long-Term Ecological Research (LTER)/KBS004: Kellogg Biological Station Main Cropping System Experiment [LTER_KBS004]
LTER - Long-Term Ecological Research Program/Kellogg Biological Station (KBS) LTER/KBS004 [Summary adapted from the LTER Core Data Set Catalog]: Data for the main cropping system experiment at KBS. ...


Showing 1 through 50 of 100 Next
Click here for a static view of records.

Link to Web Site