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  2. Phosphorus cycle - Wikipedia

    en.wikipedia.org/wiki/Phosphorus_cycle

    The phosphorus cycle is the biogeochemical cycle that involves the movement of phosphorus through the lithosphere, hydrosphere, and biosphere.Unlike many other biogeochemical cycles, the atmosphere does not play a significant role in the movement of phosphorus, because phosphorus and phosphorus-based materials do not enter the gaseous phase readily, [1] as the main source of gaseous phosphorus ...

  3. Marine biogeochemical cycles - Wikipedia

    en.wikipedia.org/wiki/Marine_biogeochemical_cycles

    The phosphorus cycle is the movement of phosphorus through the lithosphere, hydrosphere, and biosphere. Unlike many other biogeochemical cycles, the atmosphere does not play a significant role in the movement of phosphorus, because phosphorus and phosphorus-based compounds are usually solids at the typical ranges of temperature and pressure ...

  4. Biogeochemistry - Wikipedia

    en.wikipedia.org/wiki/Biogeochemistry

    Biogeochemistry is the scientific discipline that involves the study of the chemical, physical, geological, and biological processes and reactions that govern the composition of the natural environment (including the biosphere, the cryosphere, the hydrosphere, the pedosphere, the atmosphere, and the lithosphere).

  5. Phosphorus a food supply time bomb? - AOL

    www.aol.com/news/2010-03-20-phosphorus-a-food...

    Without phosphorus, plants and animals couldn't function, so I find it troubling to read that production of the element is projected to peak in 2035, and that we are already experiencing market ...

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  7. Ocean fertilization - Wikipedia

    en.wikipedia.org/wiki/Ocean_fertilization

    In the very long term, phosphorus "is often considered to be the ultimate limiting macronutrient in marine ecosystems" [21] and has a slow natural cycle. Where phosphate is the limiting nutrient in the photic zone , addition of phosphate is expected to increase primary phytoplankton production.

  8. Stephen R. Carpenter - Wikipedia

    en.wikipedia.org/wiki/Stephen_R._Carpenter

    He received a B.A. in biology in 1974 [1] and then entered the graduate programs in Botany and Oceanography and Limnology at the University of Wisconsin-Madison where he participated in the lab of Michael Adams to examine the role played by macrophytes in the phosphorus cycle of lake ecosystems. During his graduate years he met his wife, Susan ...

  9. Biogeochemical cycle - Wikipedia

    en.wikipedia.org/wiki/Biogeochemical_cycle

    A biogeochemical cycle, or more generally a cycle of matter, [1] is the movement and transformation of chemical elements and compounds between living organisms, the atmosphere, and the Earth's crust. Major biogeochemical cycles include the carbon cycle , the nitrogen cycle and the water cycle .