• Organization: Department of the Interior
• Updated: 2022-05-26T00:00:00Z

Legacy mine waste from the Clark Fork River in Western Montana has contributed 100 million tons of tailings into the watershed between 1880 and 1982 (E.D. Andrews, Longitudinal dispersion of...

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• Organization: Department of the Interior
• Updated: 2021-09-08T00:00:00Z

Tributary inputs to lakes and seas are measured at riverine gages, upstream of lentic influence. Between these riverine gages and the nearshore zones of large waterbodies lie rivermouths, which...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2025-10-08T18:29:55.000+00:00

Seston data with phytoplankton and size fractioned non-living particles counted by flow cytomter from Penebscot River, Maine in April, May, and June of 2015. High frequent chlorophyll, dissolved...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2021-08-19

Data were created in order to examine mercury concentrations, cycling, and biotic transfer in the Great Lakes and is in response to mercury concentrations in fish that are above consumption...

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• Organization: Department of the Interior
• Updated: 2024-09-17T00:00:00Z

As part of the larger Great Lakes Cooperative Science and Monitoring Initiative (CSMI) , the U.S. Geological Survey Mercury Research Laboratory (MRL) completed a binational assessment partnering...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2013-03-15T00:00:00.000+00:00

Micro-zooplankton populations in the upper 100 m were sampled from 5 marine environments in the northeast Pacific Ocean extending from slope waters off San Diego to an oceanic site near Isla...

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• Organization: Department of the Interior
• Updated: 2022-04-28T00:00:00Z

This dataset includes information from multiple taxa collected from four main reaches in the Upper Mississippi River Basin, including La Grange reach of Illinois River, Pool 2 of Mississippi...

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• Organization: Department of the Interior
• Updated: 2023-09-12T00:00:00Z

This data release includes results of raw water, soil, seston, and fish tissue samples collected from 14 lakes within Lake Clark National Park and Katmai National Park between 2007 and 2017....

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2013-03-18T00:00:00.000+00:00

These data compromise the Kiel Atlas containing 2 files; indian1.dat, 2/3/60- 6/18/66 and indian2.dat, 7/20/60-12/5/69 of primary productivity data from the University of South Florida as received...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2022-03-18

This data release includes results of raw water, soil, seston, and fish tissue samples collected from lakes in southwestern Alaska between 2011 and 2016. Specifically, these data include total...

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• Organization: Department of the Interior
• Updated: 2021-09-08T00:00:00Z

Increased nutrient and sediment loading have caused observable changes in algal community composition, and thereby, altered the quality and quantity of food resources available to native...

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• Organization: Department of the Interior
• Updated: 2020-08-31T00:00:00Z

This dataset includes the field measurements and laboratory analyses of surface water, seston, and sediment collected from Lake Powell, within Glen Canyon National Recreation area (GLCA), during...

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• Organization: Department of the Interior
• Updated: 2025-07-18T00:00:00Z

This data release includes sampling location data; field-collected stream attribute data; laboratory-analyzed chemistry concentrations (total mercury, methyl mercury) and isotopic composition...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2022-12-23T00:00:00.000+00:00

This dataset contains the biological response for Atlantic sea scallops (Placopecten magellanicus) exposed to three different levels of carbon dioxide enrichment (low, medium, high). The...

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• Organization: Department of the Interior
• Updated: 2020-08-18T00:00:00Z

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 fluctuations in plant isotopic...

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• Organization: Department of the Interior
• Updated: 2021-04-22T00:00:00Z

Inferences about ecological structure and function are often made using elemental or macromolecular tracers of food web structure. For example, inferences about food chain length are often made...

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• Organization: Department of the Interior
• Updated: 2020-08-31T00:00:00Z

This dataset includes the field measurements and laboratory analyses of surface water, seston, fish tissue, and sediment samples collected from Bighorn Lake, within Bighorn Canyon National...

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• Organization: Department of the Interior
• Updated: 2021-07-30T00:00:00Z

Here we archive data collected during a nitrogen addition field experiment in the Sacramento River Deep Water Ship Channel. Calcium nitrate was added on 8 dates to a segment of the ship channel...

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