Editing Biogeochemical cycle (section)

==Some examples==
Some of the more well-known biogeochemical cycles are shown below:

<gallery mode="packed" style="float:left;" heights="140px">
File:Carbon cycle-cute diagram.svg|alt=Diagram of the carbon cycle|[[Carbon cycle]]
File:Oxygen Cycle.jpg| [[Oxygen cycle]]
File:Nitrogen_Cycle.jpg|alt=Diagram of the nitrogen cycle|[[Nitrogen cycle]]
File:WhalePump.jpg|alt=Diagram of the nutrient cycle|[[Nutrient cycle]]
File:Phosphorus cycle.png|alt=Diagram of the phosphorus cycle|[[Phosphorus cycle]]
File:Sulfur Cycle (Ciclo do Enxofre).png|alt=Diagram of the sulfur cycle|[[Sulfur cycle]]
File:Cycle of rocks 1.png|alt=Diagram of the rock cycle|[[Rock cycle]]
File:Water cycle.png|alt=Diagram of the water cycle|[[Water cycle]]
</gallery>

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Many biogeochemical cycles are currently being studied for the first time. [[Climate change]] and human impacts are drastically changing the speed, intensity, and balance of these relatively unknown cycles, which include:
* the [[mercury cycle]],<ref>{{cite web|title=Mercury Cycling in the Environment|url=http://wi.water.usgs.gov/mercury/mercury-cycling.html|website=Wisconsin Water Science Center|publisher=United States Geological Survey|date=10 January 2013|access-date=20 November 2017|archive-date=11 April 2021|archive-url=https://web.archive.org/web/20210411155926/https://wi.water.usgs.gov/mercury/mercury-cycling.html|url-status=live}}</ref> and 
* the human-caused cycle of PCBs.<ref>{{cite book |title=Organic contaminants that leave traces : sources, transport and fate |year=2006 |publisher=Ifremer |isbn=9782759200139 |pages=22–23}}</ref>
<gallery mode="packed" style="float:left;" heights="155px">
File:Plagiomnium affine laminazellen.jpeg|[[Chloroplasts]] conduct [[photosynthesis]] in [[plant cell]]s and other [[eukaryote|eukaryotic]] organisms.
File:Organic carbon cycle including the flow of kerogen.png|[[Kerogen]] cycle<ref>{{cite journal |doi = 10.1038/nature14400|title = Global carbon export from the terrestrial biosphere controlled by erosion|year = 2015|last1 = Galy|first1 = Valier|last2 = Peucker-Ehrenbrink|first2 = Bernhard|last3 = Eglinton|first3 = Timothy|journal = Nature|volume = 521|issue = 7551|pages = 204–207|pmid = 25971513|bibcode = 2015Natur.521..204G|s2cid = 205243485}}</ref><ref>{{cite journal |doi = 10.1016/S0146-6380(97)00056-9|title = Comparative organic geochemistries of soils and marine sediments|year = 1997|last1 = Hedges|first1 = J.I|last2 = Oades|first2 = J.M|journal = Organic Geochemistry|volume = 27|issue = 7–8|pages = 319–361| bibcode=1997OrGeo..27..319H }}</ref>
File:Coal anthracite.jpg|Coal is a reservoir of carbon
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Biogeochemical cycles always involve active 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 multidisciplinary.  The carbon cycle may be related to research in [[ecology]] and [[atmospheric sciences]].<ref>{{cite book|last1=McGuire|first1=1A. D.|last2=Lukina|first2=N. V.|chapter=Biogeochemical cycles|editor-last1=Groisman|editor-first1=P.|editor-last2=Bartalev|editor-first2=S. A.|editor-last3=NEESPI Science Plan Development Team|title=Northern Eurasia earth science partnership initiative (NEESPI), Science plan overview|date=2007|pages=215&ndash;234|series=Global Planetary Change|volume=56|chapter-url=http://neespi.org/science/NEESPI_SP_chapters/SP_Chapter_3.2.pdf|access-date=20 November 2017|archive-date=5 March 2016|archive-url=https://web.archive.org/web/20160305025005/http://neespi.org/science/NEESPI_SP_chapters/SP_Chapter_3.2.pdf|url-status=live}}</ref> Biochemical dynamics would also be related to the fields of [[geology]] and [[pedology]].<ref>{{cite web|title=Distributed Active Archive Center for Biogeochemical Dynamics|url=http://daac.ornl.gov/|website=daac.ornl.gov|publisher=Oak Ridge National Laboratory|access-date=20 November 2017|archive-date=11 February 2011|archive-url=https://web.archive.org/web/20110211040758/http://daac.ornl.gov/|url-status=live}}</ref>

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