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The field of biogeochemistry involves scientific study of the chemical, physical, geological, and biological processes and reactions that govern the composition of the natural environment (including the biosphere, the hydrosphere, the pedosphere, the atmosphere, and the lithosphere), and the cycles of matter and energy that transport the Earth's chemical components in time and space. Biogeochemistry is a systems science closely related to Systems ecology.

Biogeochemistry research

There are biogeochemistry research groups in many universities around the world. Since this is a highly inter-disciplinary field, these are situated within a wide range of host disciplines including: atmospheric sciences, biology, ecology, geomicrobiology, environmental chemistry, geology, oceanography and soil science. These are often bracketed into larger disciplines such as earth science and environmental science.

Many researchers investigate the biogeochemical cycles of chemical elements such as carbon, oxygen, nitrogen, phosphorus and sulfur, as well as their stable isotopes. The cycles of trace elements such as the trace metals and the radionuclides are also studied. This research has obvious applications in the exploration for ore deposits and oil, and in remediation of environmental pollution.

Some important research fields for biogeochemistry include:

• modelling of natural systems
• soil and water acidification recovery processes
• increased eutrophication of surface waters
• carbon sequestration
• soil remediation
• climate change
• biogeochemical prospecting for ore deposits

History

Vladimir Vernadsky - Russian geochemist.

The founder of biogeochemistry is Russian scientist Vladimir Vernadsky, a Russian who, with his 1926 book The Biosphere, in the tradition of Mendeleev, is credited with formulating a physics of the earth, as a living whole. Vernadsky distinguished three spheres in the universe domain, where a sphere is a concept similar to the Riemman concept of a space-phase. He observed that each sphere has its own laws of evolution, and that the higher spheres modify and dominate the lowers:

1. Abiotic sphere - all the non-living energy and material processes
2. Biosphere - the life processes that live within the abiotic sphere
3. Nöesis or Nösphere - the sphere of the cognitive process of man

Human activities (e.g., agriculture and industry) modify the Biosphere and Abiotic sphere. In the contemporary environment, the amount of influence humans have on the other two spheres is comparable to a geological force (see Anthropocene).

Early development of biogeochemistry

The American limnologist and geochemist G. Evelyn Hutchinson is credited with outlining the broad scope and principles of this new field. More recently, the basic elements of the discipline of biogeochemistry were restated and popularized by the British scientist and writer, James Lovelock, under the label of the Gaia Hypothesis. Lovelock emphasizes a concept that life processes regulate the Earth through feedback mechanisms to keep it habitable.

Representative books and publications

• Vladimir I. Vernadsky, 2007, Essays on Geochemistry & the Biosphere, tr. Olga Barash, Santa Fe, NM, Synergetic Press, ISBN 0-907791-36-0 (originally published in Russian in 1924)
• Schlesinger, W. H. 1997. Biogeochemistry: An Analysis of Global Change, 2nd edition. Academic Press, San Diego, Calif. ISBN 012625155X.
• Schlesinger, W.H., 2005. Biogeochemistry. Vol. 8 in: Treatise on Geochemistry. Elsevier Science. ISBN 0080446426
• Vladimir N. Bashkin, 2002, Modern Biogeochemistry. Kluwer, ISBN 1-4020-0992-5.
• Samuel S. Butcher et al. (Eds.), 1992, Global Biogeochemical Cycles. Academic, ISBN-0-12-147685-5.
• Susan M. Libes, 1992, Introduction to Marine Biogeochemistry. Wiley, ISBN 0-471-50946-9.
• Dmitrii Malyuga, 1995, Biogeochemical Methods of Prospecting. Springer, ISBN 978-0306106828.
• Global Biogeochemical Cycles[1]. A journal published by the American Geophysical Union.
• Biogeochemistry [2]. A journal published by Springer.

See also

• Atlantic Data Base of Exchange Processes at the Deep Sea Floor
• Biosphere
• Biogeochemical cycle
• Ecology
• Ecosystem model
• Edaphology
• Environmental chemistry
• Geochemistry
• Geomicrobiology
• Noosphere
• Pedology (soil study)

External links

• What is Biogeochemistry? - University of California´s California Space Institute page.
• Treatise on Geochemistry Volume 8. Biogeochemistry

Example research institutes

• Biogeochemistry and isotope geochemistry, University of Vienna
• Biogeochemistry and environmental biocomplexity, Cornell University
• Biogeochemical Dynamics Program, Florida State University
• Biogeochemistry group, Department of Atmospheric and Oceanic Sciences, UCLA
• Biogeochemistry Lab, Smithsonian Environmental Research Center
• Biogeochemistry group, Chemical engineering, Lund University
• Max-Planck-Institute for Biogeochemistry
• Complex Systems Research Center, University of New Hampshire
• Wetland Biogeochemistry Laboratory, Soil and Water Science Department, University of Florida
• Oxford University Biogeochemistry group
• Watershed Biogeochemistry, Trent University see also

Wikipedia content modification information:

• This page was last modified on 10 July 2008, at 11:13.

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