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.
New research investigating whether nitrogen fertilizer run-off affects marine sponges suggests these animals have a high tolerance to nitrogen, but some species may be better able to cope than others.
Plants & Animals
Oct 13, 2025
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As the climate warms and nutrient inputs shift, algal communities in cool, clear mountain lakes like Lake Tahoe will likely experience seasonal changes, according to a study from the University of California, Davis, published ...
Ecology
Oct 6, 2025
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14
The algal blooms increasingly seen in Canadian lakes have been linked to both nutrient pollution from agricultural runoff and climate change. However, a new Concordia-led study using DNA sequencing of lakebed microbes reveals ...
Environment
Sep 30, 2025
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While publicly registered drinking water must meet government standards and regulations, people accessing private groundwater bores and springs supplying 25 or fewer people have no requirements to test their drinking water. ...
Earth Sciences
Sep 30, 2025
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25
A new study has revealed how tiny microbes in rivers and wetlands across China help clean up excess nitrogen pollution, offering fresh insights into the health of freshwater ecosystems and the global nitrogen cycle.
Ecology
Sep 25, 2025
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21
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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237
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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55
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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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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19
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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