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.
A microscopic green pigment can provide major insights into how severe tropical cyclones called typhoons impact water flow and ecosystems. Called chlorophyll a, the pigment is responsible for absorbing light and initiating ...
Earth Sciences
Apr 16, 2026
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Human urine—often flushed away without thought—could be key to making agriculture and wastewater treatment more sustainable and energy efficient, according to new research from the University of Surrey. Although urine only ...
Environment
Apr 14, 2026
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After months of relentlessly miserable weather for most of the UK, spring brings renewed enthusiasm for spending time outdoors hiking, wild swimming, paddling, or on walks.
Environment
Apr 10, 2026
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Algae blooms make a pond's surface shine in mesmerizing green hues. But if the microorganisms responsible are cyanobacteria, they can also release toxins that harm humans and wildlife alike. A team reporting in ACS ES&T Water ...
Cell & Microbiology
Apr 5, 2026
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93
From coral reefs and kelp forests to the open ocean and deep-sea zones, nutrients that support phytoplankton growth and marine productivity form the foundation of oceanic ecosystems. When levels of key nutrients—such as nitrate ...
Environment
Mar 12, 2026
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Canada's drinking water can remain at risk long after wildfires burn out, according to a UBC-led global review that found water-quality impacts often emerge months or years later—not just immediately after a fire. Researchers ...
Environment
Mar 4, 2026
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19
Scientists have developed a new edge-of-field water-treatment system that reduces the load of excess nutrients washing into waterways from farm drainage systems. Their method combines a woodchip bioreactor with a two-step ...
Biotechnology
Feb 26, 2026
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20
Public concern over the total failure of the Moa Point wastewater treatment plant on Wellington's south coast has been growing, despite this week's announcement of an independent review.
Plants & Animals
Feb 17, 2026
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20
The Baltic Sea has been under pressure for decades: Although phosphorus and nitrogen river loads, the main cause for its eutrophication, have been significantly reduced, adverse effects such as algal blooms and oxygen depletion ...
Environment
Feb 16, 2026
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46
CO2 that has been absorbed and accumulated in fresh water areas like lakes and reservoirs—is receiving attention for its potential contributions to achieving a carbon neutral society. Kobe University is a hub for freshwater ...
Earth Sciences
Jan 23, 2026
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