Nutrient content (water) in the context of environmental and water science topics refers to the concentration and speciation of dissolved and particulate nutrients—primarily nitrogen (e.g., nitrate, nitrite, ammonium, dissolved organic nitrogen) and phosphorus (e.g., orthophosphate, dissolved and particulate organic phosphorus), as well as ancillary elements such as silica—within freshwater, marine, or wastewater systems. It is quantitatively assessed using chemical and sometimes bioassay methods to characterize trophic status, evaluate eutrophication risk, model biogeochemical cycles, and inform regulatory standards for water quality, ecological health, and resource management.
In northern California, salmon are more than just fish—they're a cornerstone of tribal traditions, a driver of tourism and a sign of healthy rivers. So it may not come as a surprise that NAU and University of California Berkeley ...
Ecology
Sep 8, 2025
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238
Seagrass has the potential to be one of the world's most effective sponges at soaking up and storing carbon, but we don't yet know how nutrient pollution affects its ability to sequester carbon.
Plants & Animals
Sep 3, 2025
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Modern crops are often excessively fertilized, which boosts yields in the short term but also harms the environment due to nutrient runoffs and greenhouse gas emissions.
Biotechnology
Aug 21, 2025
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28
Hotspots of bacteria and phosphorus at England's most famous lake must be addressed urgently, the authors of a study into its water quality warned on Tuesday.
Environment
Aug 19, 2025
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Tile drainage is a common practice used in agricultural fields to remove excess water, but it also transports harmful nutrients into water bodies, contributing to algal blooms that deprive aquatic life of oxygen. Woodchip ...
Biotechnology
Aug 11, 2025
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24
Climate change is starving the Arctic Ocean of essential nutrients, with the region's six largest rivers now delivering far less of the type of nitrogen that marine ecosystems need to survive, according to new research in ...
Earth Sciences
Aug 4, 2025
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138
A new study published in Nature Geoscience has revealed that the global ocean's chemical makeup is undergoing a transformation, with key nutrient ratios critical to marine life shifting away from the long-accepted Redfield ...
Earth Sciences
Jul 21, 2025
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52
An effective measure to fight nutrient deficiency is to increase the nutrient content of food, particularly staples that are cheap to produce and widely consumed. Scientists do this by breeding crop varieties that are higher ...
Agriculture
Jul 17, 2025
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29
Wheat contains many valuable nutrients—and can help to make a diet with bread even healthier. However, the nutrient content depends on the type of wheat. A rapid test method could help to increase the nutrient content of ...
Agriculture
Jul 1, 2025
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26
NOAA is forecasting this summer's Gulf of America (formerly Gulf of Mexico) "dead zone" to be average-sized, covering approximately 5,574 square miles—an area roughly three times the size of Delaware. The dead zone, or hypoxic ...
Environment
Jun 12, 2025
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