Eutrophication Sandor

Eutrophication

Annalie Sandor

What IS Eutrophication?

eu·troph·i·ca·tionyo͞oˌträfəˈkāSH(ə)n/nounnoun: eutrophication excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.

Where does it occur?

Eutrophic Lake Levels

› 53% lakes in Europe› 54% lakes in Asia

› 48% lakes in Noth America› 41% lakes in South America

› 28% lakes in Africa

Schindler's 1974Cultural Eutrophication Experiment

Nutrient Cycle Lake Biwa

Preventative Measures:

Educate People

--Don't over fertilize!--Reroute sewage disposal so it doesn't empty directly into waterways--Don't use detergents with phosphates & other clogging nutrients in them!

Riparian Buffers

Create vegetative barriers between the land being used, and the lake/river/pond that may absorb the nutrients

Gardening Practices

--Reduce sprinkler usage--Water only where/when necesary--Be careful with fertilizers--Prevent excess water runoff

Conclusion

--How can we prevent non-point source pollution from contributing so heavily to cultural eutrophication?--How does the natural nutrient cycle of bodies of water affect eutrophication?