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A commonly cited example is the water cycle.

In Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through both biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth. A cycle is a series of change which comes back to the starting point and which can be repeated.[1][2] Water, for example, is always recycled through the water cycle, as shown in the diagram. The water undergoes evaporation, condensation, and precipitation, falling back to Earth. Elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another through biogeochemical cycles.[1][2]'

The term "biogeochemical" tells us that biological, geological and chemical factors are all involved. The circulation of chemical nutrients like carbon, oxygen, nitrogen, phosphorus, calcium, and water etc. through the biological and physical world are known as biogeochemical cycles. In effect, the element is recycled, although in some cycles there may be places (called reservoirs) where the element is accumulated or held for a long period of time (such as an ocean or lake for water).[1][2]

Important cycles[edit]

The most well-known and important biogeochemical cycles, for example, include

There are many biogeochemical cycles that are currently being studied for the first time as climate change and human impacts are drastically changing the speed, intensity, and balance of these relatively unknown cycles. These newly studied biogeochemical cycles include

Biogeochemical cycles always involve hot equilibrium states: a balance in the cycling of the element between compartments. However, overall balance may involve compartments distributed on a global scale.

As biogeochemical cycles describe the movements of substances on the entire globe, the study of these is inherently multidiciplinary. The carbon cycle may be related to research in ecology and atmospheric sciences.[4] Biochemical dynamics would also be related to the fields of geology and pedology (soil study).[5]

Global biogeochemical cycles critical for life
Diagram of the nitrogen cycle
Diagram of the water cycle
Diagram of the carbon cycle
Diagram of the oxygen cycle
Diagram of the phosphorus cycle

See also[edit]

References[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Biogeochemical_cycle — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

53 news items

 
Nature.com
Tue, 09 Jun 2015 07:15:00 -0700

Because of the complexity of its biogeochemical cycle, time lags in the response of many freshwater ecosystems to changes in atmospheric Hg levels can be expected (Brigham et al., 2014), hampering our ability to manage Hg contamination. This inability ...
 
Nature.com (subscription)
Wed, 05 Oct 2011 10:03:45 -0700

Excess phosphorus is polluting our environment while, ironically, mineable resources of this essential nutrient are limited. James Elser and Elena Bennett argue that recycling programmes are urgently needed.
 
Труд
Tue, 23 Jun 2015 07:48:45 -0700

... 2015 Г. ВКЛЮЧИТЕЛНО, ЗА ИЗВЪРШВАНЕТО НА ОКЕАНОГРАФСКА ЕКСПЕДИЦИЯ ВЪВ ВРЪЗКА С РЕАЛИЗАЦИЯТА НА ПРОЕКТ „RESPONSE OF THE BIOGEOCHEMICAL CYCLE ON CONTINENTAL SHELVES TO SEAWATER DEOXYGENATION” ...
 
News-Medical.net
Sat, 15 Oct 2011 06:18:26 -0700

In their commentary "The phosphorus cycle: a broken biogeochemical cycle" published in the Sept. 6 issue of Nature, the duo examine the lack of public and governmental discourse about the plight of the element phosphorus - and the potential social ...
 
National Science Foundation (press release)
Mon, 03 Aug 2009 23:23:57 -0700

A biogeochemical cycle is a pathway by which a chemical element, such as carbon, or compound, like water, moves through Earth's biosphere, atmosphere, hydrosphere and lithosphere. In effect, the element is "recycled," although in some cycles the ...

University of Wisconsin-Madison

University of Wisconsin-Madison
Thu, 15 Jan 2015 14:15:30 -0800

While the study focuses on several of these, including climate change and a troubling loss of biodiversity, Carpenter led the examination of biogeochemical cycle changes. Specifically, Carpenter looked at two elements essential to life as we know it: ...

The Daily Galaxy (blog)

The Daily Galaxy (blog)
Mon, 19 Jan 2015 08:38:18 -0800

While the study focuses on several of these, including climate change and a troubling loss of biodiversity, Carpenter led the examination of biogeochemical cycle changes. Specifically, Carpenter looked at two elements essential to life as we know it, ...
 
Freshare
Thu, 15 Jan 2015 13:33:45 -0800

While the study focuses on several of these, Carpenter led the examination of biogeochemical cycle changes. Specifically, Carpenter looked at two elements essential to life as we know it, phosphorus and nitrogen. Both are widely used to fertilize crops ...
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