final exam thursday 7-10 pm here non-cumulative same format covers all lectures since exam 2 200 of...
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Final Exam
Thursday 7-10 pm here
Non-cumulative
Same format
Covers all lectures since Exam 2
200 of 1000 points
Sample ?s/Answers on web under Exam 3
Use lecture outlines, book + PP to study.
QUESTIONS?
A. Human activities threaten local ecological processes.
1. Overexploitation
2. Introduce exotic species
3. Habitat conversion
4. Irrigation
5. Fertilizer --> eutrophication
Spread of zebra mussels in waterways
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Plenty of Invasive Species on Continents
•Great Lakes - zebra mussels, gobies, sea lamprey
•Starlings, house sparrows•mosquito fish, gypsy moth
•Kudzu, water hyacinth•garlic mustard, purple loosestrife, salt cedar, tumbleweed
What is your ‘ecological footprint’?
• For every kilojoule of food energy we eat, 10 kilojoules of fossil fuel energy is required to put that food on your table.
• How many hectares to produce enough biological-produced fuel (ethanol) to meet our energy needs?• 10.7 hectares (23 football fields!)/person• Globally only 1.7 hectares of land available for each of earth’s 6 BILLION people…• How many resources do you use?• 30 X as many as a person in India…
What is the carrying capacity of the globe?
Doubling time of human since 1 AD
When Nt/No = 2 = ert
So ln 2 = rt, t = ln2/r
0-1650 = 1650 yrs to double r = .00041650-1850 = 200 yrs r = .00351850-1930 = 80 yrs r = .00871930-1975 = 45 yrs r = .01521975-2010 = 35 yr r = .0.92So both N and r are increasing…