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Related Concept Videos

The Phosphorus Cycle01:21

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Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
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Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
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Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
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The addition or removal of phosphate groups from proteins is the most common chemical modification that regulates cellular processes. These modifications can affect the structure, activity, stability, and localization of proteins within cells as well as their interactions with other proteins.
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Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment
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Wetland phosphorus dynamics and phosphorus removal potential.

Megan Skinner1

  • 1U.S. Fish and Wildlife Service, Klamath Falls Fish and Wildlife Office, Klamath Falls, Oregon, USA.

Water Environment Research : a Research Publication of the Water Environment Federation
|October 19, 2022
PubMed
Summary

Restored wetlands can remove up to 44% of inflowing phosphorus through mechanisms like particulate deposition. Effective wetland restoration for phosphorus sequestration requires careful design, vegetation management, and consideration of site-specific conditions.

Keywords:
nutrient sequestrationphosphorusrestoration planning and designwater quality managementwetland restoration

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Area of Science:

  • Environmental Science
  • Ecology
  • Hydrology

Background:

  • Wetlands act as crucial transitional zones between terrestrial and aquatic systems.
  • They offer significant ecosystem services, including the mitigation of surface water eutrophication.
  • Understanding phosphorus cycling in wetlands is key for effective water quality restoration.

Purpose of the Study:

  • To review the complex physical, chemical, and biological processes of phosphorus cycling in wetlands.
  • To provide recommendations for restoring permanent and semipermanent flow-through wetlands, focusing on phosphorus removal.
  • To assess phosphorus removal in existing wetland restoration studies.

Main Methods:

  • Literature review of wetland ecosystem functions and phosphorus cycling.
  • Analysis of wetland restoration studies focused on phosphorus sequestration.
  • Synthesis of findings to inform restoration strategies for specific regions like the Upper Klamath Basin.

Main Results:

  • Well-designed wetlands can remove 25% to 44% of incoming total phosphorus.
  • Primary sequestration mechanisms include particulate deposition, adsorption, biomass uptake, and peat accretion, varying by site conditions.
  • In regions with short growing seasons, particulate deposition is the dominant phosphorus sequestration pathway.

Conclusions:

  • Optimizing phosphorus sequestration involves designing for adequate hydraulic residence time and promoting vegetation like tule (hardstem bulrush) for peat accretion.
  • Flooding during cooler periods and initial isolation of restored wetlands minimize phosphorus release.
  • A combined approach of mitigation and restoration, alongside adaptive management through monitoring, is essential for achieving water quality goals.