What is PHOSPHORUS? Second most abundant mineral in the body DNA molecules Nucleic acids “ATP” and “ADP” Fats/Phospholipids Bones, teeth and shells.

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Presentation transcript:

What is PHOSPHORUS? Second most abundant mineral in the body DNA molecules Nucleic acids “ATP” and “ADP” Fats/Phospholipids Bones, teeth and shells Energy and impulses

What is the Phosphorus Cycle? Circulation of phosphorus among rocks, soil, water, plants, and animals of earth. a sedimentary cycle. phosphate deposits on land and shallow water  living organisms  slowly back to land and ocean.

Phosphorus in Land and Ocean Sediments Phosphate salts contain phosphate ions PO is a subscript for PO 4 3- Weathering of phosphate rock  soil, which plants absorb  eaten by humans and other animals  re-enters soil from bacteria in dead body of human/animal  washed from soil back into sea.

Phosphorus Cycle Diagrams

More Diagrams (woohoo!)

Human Effect…PART 1 Mining of phosphate rock for inorganic fertilizers and detergents. Causes pollution. Expensive to reclaim.

Human Effects…PART 2! Decreasing productivity of tropical forests by cutting them Phosphorus and other nutrients washed away by heavy rains Land becomes unproductive

Human Effects…PART 3!! Over fertilization of bodies of water. Explosive growth of cyanobacteria algae, and aquatic plants. Rooted plants on bottom die because of no sunlight

Eutrophication in Wisconsin Because of fertilizer overuse in Lake Mendota, the lake is becoming a eutrophic lake. Eutrophic- concentrations of excess nutrients in water causes a lot of algae.

Mendota Continued... Eutrophication causes green blanketing of water. Suffocates life, diminishes biodiversity and emits noxious odors. Example: In Mendota, killed native species and increased non-native species (Eurasian milfoil and carp).

Bibliography 1. Bennett, Elena and Steve R. Carpentar. “P Soup”. World Watch, Miller, G. Tyler, Jr. Living in the Environment: Principles Connections, and Solutions. Pacific Grove: Brooks/Cole Publishing Company, Reiners, William A. “Phosphorus Cycle”. World Book Encyclopedia. Chicago: World Book, 2002.