November 6.docx

2 Pages
78 Views
Unlock Document

School
University of North Carolina-Wilmington
Department
Environmental Studies
Course
EVS 205
Professor
James Rotenberg
Semester
Fall

Description
November 6, 2013 Global Water Issues • Safe Drinking Water o 783 million people do not have access to clean water o 2.5 billion do not have access to adequate sanitation o 1 in 9 people worldwide do not have access to improved sources of drinking water o 1 in 3 lack improved sanitation • Cuyahoga River in Ohio o Pollution caused river fires in 1950s and 1960s Global Water Pollution in Rivers, Lakes, Groundwater, and Oceans • Pollution: Freshwater Lakes o Lakes and reservoirs are more susceptible to runoff contamination than rivers o Eutrophic  Nutrient rich (nitrates and phosphates)  Poor light penetration  Low dissolved oxygen  Shallow  High algae growth o Oligotrophic  Nutrient poor  Good light penetration  High dissolved oxygen  Low algae growth o Eutrophic Blooms  Nutrient overload produces blooms • Algae and or/cyanobacteria  Algae die – decomposing bacteria multiply • Causes DO levels to drop 2 • Ex: Greenfield Lake • Water Pollution can contribute to: o Bioaccumulation  Toxin is absorbed and stored in specific organs or tissues at higher than expected levels. o Bio-magnification  Toxin levels are increased as they pass through food chains
More Less

Related notes for EVS 205

Log In


OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.

Submit