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Related Concept Videos

The Phosphorus Cycle01:21

The Phosphorus Cycle

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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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Updated: Mar 24, 2026

Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment
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How will climate change influence phosphorus systems? An expert elicitation approach.

Camilla Negri1,2, Golnaz Ezzati3, Philip M Haygarth4

  • 1Department of Geography and Environmental Studies, Toronto Metropolitan University, Toronto, Canada.

Journal of Environmental Quality
|March 23, 2026
PubMed
Summary

Phosphorus (P) sustainability faces challenges exacerbated by climate change. Addressing P dynamics in agricultural systems requires more transdisciplinary research and data collection for effective climate adaptation strategies.

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Area of Science:

  • Agricultural Science
  • Environmental Science
  • Climate Science

Background:

  • Phosphorus (P) sustainability is a complex global challenge, significantly impacted by climate change.
  • Interdisciplinary evidence on climate change effects and adaptation strategies for P dynamics in agricultural systems is currently lacking.
  • Understanding baseline vs. managed system responses and biophysical-societal interactions is crucial for assessing climate change impacts on P.

Purpose of the Study:

  • To assess the current state of knowledge within the scientific and industrial community regarding the impacts of climate change on phosphorus dynamics in agricultural systems.
  • To identify knowledge gaps and confidence levels concerning climate change effects on P across soils, waters, and human dimensions.
  • To highlight the need for increased visibility of P in climate change discourse and the establishment of transdisciplinary relationships.

Main Methods:

  • A workshop involving academia and industry experts discussed climate change impacts on P.
  • Participant knowledge and data availability were assessed using a matrix of importance and confidence.
  • 320 statements were digitized, categorized into themes, and analyzed in the context of existing literature.

Main Results:

  • The analysis reveals a developing understanding of the connections between P systems and climate among experts.
  • Significant variation exists in the depth of topic-specific knowledge regarding climate change and P dynamics.
  • The community's confidence and knowledge levels were mapped across various P-related climate change impacts.

Conclusions:

  • Phosphorus management must be integrated into climate change discussions, necessitating transdisciplinary collaboration.
  • Further data collection on circular economy and climate adaptation is recommended.
  • Developing models and policies for adaptive P management, considering thresholds and socioeconomic factors, is essential to mitigate risks.