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Abiotic component

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Abiotic component
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(File:Abiotic components.svg|thumb|Abiotic factors are non living components found in an ecosystem which influence living things (biotic factors).)In biology and ecology, abiotic components or abiotic factors are non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems. Abiotic factors and the phenomena associated with them underpin all biology. Abiotic components include physical conditions and non-living resources that affect living organisms in terms of growth, maintenance, and reproduction. Resources are distinguished as substances or objects in the environment required by one organism and consumed or otherwise made unavailable for use by other organisms.Ricklefs, R.E. 2005. The Economy of Nature, 6th edition. WH Freeman, USA.Chapin, F.S. III, H.A. Mooney, M.C. Chapin, and P. Matson. 2011. Principles of terrestrial ecosystem ecology. Springer, New York.(File:Abiotic Factors.tif|thumb|These are different settings on earth that are abiotic factors, which mean they are not living organisms, that contribute to the earth in many different ways.)Component degradation of a substance occurs by chemical or physical processes, e.g. hydrolysis. All non-living components of an ecosystem, such as atmospheric conditions and water resources, are called abiotic components.Water Quality Vocabulary. ISO 6107-6:1994.

Examples

In biology, abiotic factors can include availability of water, light intensity, radiation, temperature, humidity, atmosphere, pH of soil and water, and salinity of soil and water. The macroscopic climate often influences each of the above. Pressure and sound waves may also be considered in the context of marine or sub-terrestrial environments.WEB,weblink Abiotic factor, National Council for Science and the Environment, 2010, Hogan, C. Benito, Washington, D.C., Encyclopedia of Earth, yes,weblink" title="web.archive.org/web/20130608071757weblink">weblink 2013-06-08, Abiotic factors in ocean environments also include aerial exposure, substrate, water clarity, solar energy and tides.WEB,weblink Ocean Abiotic Factors, National Geographic Society, 2011, Consider the differences in the mechanics of C3, C4, and CAM plants in regulating the influx of carbon dioxide to the Calvin-Benson Cycle in relation to their abiotic stressors. C3 plants have no mechanisms to manage photorespiration, whereas C4 and CAM plants utilize a separate PEP Carboxylase enzyme to prevent photorespiration, thus increasing the yield of photosynthetic processes in certain high energy environments.JOURNAL, Wang, Chuali, Guo, Longyun, Li, Yixue, Wang, Zhuo, Systematic Comparison of C3 and C4 Plants Based on Metabolic Network Analysis, BMC Systems Biology, 2012, 6, 59, S9, 10.1186/1752-0509-6-S2-S9, 23281598, 3521184, WEB, Rubisco and C4 Plants,weblink RSC: Advancing the Chemical Sciences, RSC, Many Archea require very high temperatures, pressures or unusual concentrations of chemical substances such as sulfur; this is due to their specialization into extreme conditions. In addition, fungi have also evolved to survive at the temperature, the humidity, and stability of their environment.WEB,weblink Abiotic Components, Department of Biodiversity and Conservation Biology, University of the Western Cape, yes,weblink" title="web.archive.org/web/20050425160041weblink">weblink 2005-04-25, For example, there is a significant difference in access in both water and humidity between temperate rain forests and deserts. This difference in water availability causes a diversity in the organisms that survive in these areas. These differences in abiotic components alter the species present both by creating boundaries of what species can survive within the environment, as well as influencing competition between two species. Abiotic factors such as salinity can give one species a competitive advantage over another, creating pressures that lead to speciation and alteration of a species to and from generalist and specialist competitors.JOURNAL, Dunson, William A., November 1991, The Role of Abiotic Factors in Community Organization, The American Naturalist, 138, 5, 1067–1091, 10.1086/285270, 2462508,

See also

References

{{reflist}}{{Modelling ecosystems}}

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