Write the importance of such cycles in ecosystems.

Explanation

1. The Natural reservoir of phosphorus is rock, in the form of phosphates.
2. Minute quantities of phosphates get dissolved in the soil solution during weathering of rock.
3. Phosphates enter the plants through their roots into the food chain.
4. The Organic wastes and dead organisms are decomposed by phosphate- solubilising bacteria, which release phosphorus back.
5. The atmospheric input of phosphorus through rain fall, or gaseous exchange of phosphorus between organisms as an evviroment is negligible.
6. Re-cycling of nutrients time and again.
this mining of phosphate and use of phosphate as fertilizer greatly accelerates the sphosphorous cycle and may cause local overabundance of phosphorus, particularly in coastal regions, at the mouths of rivers, and anyplace where there is a lot of sewage released into the water, Local abundance of phosphate can cause overowth of algae in the water, the algae can use up all the oxygen in the water and kill other aquatic life. this is called eutrophication. The other animals that play a unique role in the phosphorous cycle are marine birds. these birds take phosphorous containing fish out of the ocean and return to land, where they defecate. their guano contains high levels of phosphorous and in this way marine birds return phosphorous from the ocean to the land. The guano is often mined and may from the basis of the economy in some areas.