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Phosphorus cycle
389
Transcript
Farming
- Phosphorus is transferred by food webs from producers to consumers.
- Soil that is eroded from fertilized crop fields carries large quantities of phosphates into streams, lakes, and the ocean, where it stimulates growth of producers.
Decomposition
Phosphorus gets decomposed and enters back into the ecosystem every time anything that was living dies. Every living thing contains phosphorus in their bodies whether it be a plant or an animal.
The Phosphorus Cycle
- The movement of phosphorus through the lithosphere, hydrosphere, and biosphere.
- Notice that the atmosphere doesn't play a role in the cycle because Phosphorus is only solid in nature.
- The phosphorus cycle can also be called a biogeochemical cycle
Phosphorus and mining
- mining phosphorus is essential to the production of food in the modern era
- however over thousands of years less and less phosphorus is available for use
- runoff is a major issue associated with the process of mining phosphorus
- runoff from mining is very dangerous and kills aquatic ecosystems
Fertilizer
- fertilizer is essential to the production of food
- phosphorus is the main element in fertilizer
- without phosphorus mining we wouldn't have fertilizer to grow the plants we need to support the human population
Steps of the Phosphorus Cycle
1. Phosphate is released through the erosion of sediments.
2. Plants absorb the phosphate through their roots.
3. Phosphorus is moved up the food chain when animals eat the plants.
4. Phosphorus is released back into the soil when animals die.
Animals and the phosphorus cycle
- Animals play a key role in the Phosphorus cycle
- The animals get their phosphorus from plants.
- As animals decay in the earth the phosphorus from the animal is put back into the soil.
Pollution in the cycle
We remove phosphates from mines and use it on farmland as fertilizers. The runoff from the fertilizers causes high concentrations of phosphorus in the water. Which causes eutrophication, a process in which water becomes too high in nutrients. This attracts massive amounts of green algae. The algae then uses up all the oxygen in the water and causes marine life to die.
Works Cited
- http://12-xav-bio-e4.wikispaces.com/Phosphorus+Cycle
- Miller and Spool man textbook
- wikipedia.com
- google.com
- mosaicco.com
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