Found 268 datasets matching "Nitrogen isotopes".
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Use of table isotope in surficial sediments and bivalves for assessing anthropogenic development in watersheds of lakes and estuaries. This dataset is associated with the following...
Search relevance: 156.38 | Views last month: 0 -
The St Louis River (SLR) is the second largest tributary to Lake Superior and a designated area of concern (AOC) due to past industrial contamination of organic chemicals and heavy metals,...
Search relevance: 109.30 | Views last month: 0 -
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI...
Search relevance: 91.46 | Views last month: 0 -
Total carbon and nitrogen concentrations, and delta carbon-13 and delta nitrogen-15 stable isotope ratios, were determined in sediment samples to potentially identify the sources of organic matter...
Search relevance: 89.78 | Views last month: 0 -
Stable Isotope Ratios of Nitrate from the National Aquatic Resource Survey 2023 and 2024. We analyzed 163 samples with nitrate concentrations above 2 mg-N/L for oxygen and nitrogen isotopes of...
Search relevance: 88.07 | Views last month: 0 -
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI...
Search relevance: 86.19 | Views last month: 0 -
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI...
Search relevance: 84.52 | Views last month: 0 -
This dataset contains the nutrient analysis (carbon, nitrogen, stable isotopes) for estuary water, leaf detritus, container habitat water, larvae within containers, and adult mosquitos, as well as...
Search relevance: 83.58 | Views last month: 0 -
Coastal eutrophication is a prevalent threat to the healthy functioning of ecosystems globally. While degraded water quality can be detected by monitoring oxygen, nutrient concentrations, and...
Search relevance: 80.71 | Views last month: 0 -
Atmospheric mercury (Hg) deposition, which has been declining in North America since 1985, is the preeminent delivery pathway to the Great Lakes, making them sentinels for tracking shifts in...
Search relevance: 79.52 | Views last month: 0 -
Following Hurricane Sandy, scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center conducted a seasonal collection of estuarine, marsh, and sandy overwash...
Search relevance: 78.45 | Views last month: 0 -
Following Hurricane Sandy, scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center conducted a seasonal collection of estuarine, marsh, and sandy overwash...
Search relevance: 77.62 | Views last month: 0 -
Following Hurricane Sandy, scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center conducted a seasonal collection of estuarine, marsh, and sandy overwash...
Search relevance: 76.06 | Views last month: 0 -
Following Hurricane Sandy, scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center conducted a seasonal collection of estuarine, marsh, and sandy overwash...
Search relevance: 75.92 | Views last month: 1 -
This data set reports the measurement of stable carbon, nitrogen, and oxygen isotope ratios in organic material (plant, litter and soil samples) in forest canopy profiles and pasture (grasses and...
Search relevance: 74.83 | Views last month: 0 -
This dataset includes carbon and nitrogen isotope concentrations measured in polar bear hair and marine mammal prey muscle and blubber samples collected 1978-2019 in the Beaufort and Chukchi Seas....
Search relevance: 74.68 | Views last month: 0 -
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI...
Search relevance: 73.25 | Views last month: 0 -
Located in south-central Texas, the Geronimo Creek and Plum Creek watersheds have long been characterized by elevated nitrate concentrations. From April 2015 through March 2016, an investigation...
Search relevance: 70.49 | Views last month: 0 -
NOAA/WDS Paleoclimatology - Central Great Barrier Reef, Porites lutea nitrogen isotopes 1681-1987 CE
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI...
Search relevance: 69.39 | Views last month: 0 -
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI...
Search relevance: 69.28 | Views last month: 0
