Phosphorus cycle | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-21

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Phosphorus_cycle


00:01:32 1 Phosphorus in the environment
00:01:43 1.1 Ecological function
00:04:02 1.2 Biological function
00:05:00 1.3 Phosphorus cycling
00:09:23 1.4 Phosphatic minerals
00:12:10 1.4.1 Phosphorus and Eutrophication
00:13:24 1.4.2 Wetland
00:14:15 2 Human influences
00:17:37 3 See also



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SUMMARY
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The phosphorus cycle is the biogeochemical cycle that describes 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 found on Earth. The production of phosphine gas occurs in only specialized, local conditions. Therefore, the phosphorus cycle should be viewed from whole Earth system and then specifically focused on the cycle in terrestrial and aquatic systems.
On the land, phosphorus gradually becomes less available to plants over thousands of years, since it is slowly lost in runoff. Low concentration of phosphorus in soils reduces plant growth, and slows soil microbial growth - as shown in studies of soil microbial biomass. Soil microorganisms act as both sinks and sources of available phosphorus in the biogeochemical cycle. Locally, transformations of phosphorus are  chemical, biological and microbiological: the major long-term transfers in the global cycle, however, are driven by tectonic movements in geologic time.Humans have caused major changes to the global phosphorus cycle through shipping of phosphorus minerals, and use of phosphorus fertilizer, and also the shipping of food from farms to cities, where it is lost as effluent.