Eutrophication is a biological process in aquatic ecosystems driven by excess input of bioavailable nutrients, primarily nitrogen and phosphorus, that stimulates rapid primary production, especially phytoplankton and cyanobacterial blooms. The resulting high biomass alters food-web structure and increases particulate organic matter sedimentation, enhancing microbial respiration in bottom waters and sediments. This elevated oxygen demand often exceeds resupply via mixing and diffusion, leading to hypoxia or anoxia and associated shifts in community composition, loss of aerobic organisms, and promotion of anaerobic microbial pathways. Eutrophication thereby modifies biogeochemical cycling, including nitrogen and phosphorus regeneration, trace gas production, and redox dynamics across water column and sediment interfaces.
Implementing novel management practices in dairy farming, one of the commonwealth's major agricultural industries, could help alleviate a large source of both nutrient pollution and greenhouse gas emissions, according to ...
Biotechnology
Feb 6, 2026
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64
Nitrogen pollution is a serious concern for the agriculture industry. Agricultural fertilizers contain nitrogen, an essential nutrient for plant health. However, these fertilizers also produce nitrogen runoff, which occurs ...
Ecology
Jan 26, 2026
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20
Charophytes are extremely beneficial to lakes, improving water quality and biodiversity. However, their abundance was found to decline in many lakes without clear signs of eutrophication during recent decades.
Plants & Animals
Jan 10, 2026
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103
The cultivation of rice—the staple grain for more than 3.5 billion people around the world—comes with extremely high environmental, climate and economic costs.
Biotechnology
Sep 23, 2025
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125
For seaside communities reducing their pollution, nitrogen is a prime target. Often found in agricultural runoff and human waste, nitrogen and the nitrogen-containing nitrate molecule can enter coastal waters as a critical ...
Environment
Aug 4, 2025
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29
Monash University scientists have uncovered how invasive plants like white clover rapidly adapt to new environments, revealing genetic changes that underpin their global success.
Evolution
Jul 8, 2025
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23
Seagrasses are critical to coastal ecosystems—offering habitat, stabilizing the seafloor and buffering wave energy—but globally they're increasingly under threat. Beginning in 2011, a series of intense algal blooms—fueled ...
Ecology
Jun 11, 2025
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28
Eutrophication and oxygen depletion are well-known threats to the ecological balance of the Baltic Sea, which is increasingly under pressure due to climate change. In this context, large saltwater inflows from the North Sea ...
Earth Sciences
Apr 3, 2025
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