extinction nest in oak barrens (acorns & beechnuts), breed communally, predator satiation; boom-and-bust cycles?
invasive Utility poles, satellite dishes, cell towers; agricultural pests in S. America.
Why are parakeetss declining? Peregrine falcons? But they don't like parrots w sharp beaks.
invasives Banner QUESTION:
Why is Lake Michigan water so clear?
Female mussels PROLIFIC produce > 1M eggs/year, larvae settle on solid surface: power plant cooling systems.
Also quagga! lake trout, salmon, walleye, whitefish, perch, herring. Cane Toad Australia.
Nuisance Fish DVD. Nuisance Fish: jumping Asian carp Bighead/Silver carp 1970s improve water quality: remove algae in aquaculture ponds. Why is Lake Michigan water so clear?
ozone_hole August=winter. Stratosphere 20 km; UVC shortest, does not reach earth.
2000 larger than US, Canada, Mexico; recover by 2050 Ozone hole peaks over Antarctica (2008)
cfc REHEARSE fig. Styrofoam used CFCs in 80's; now HCFC-22 still depletes ozone; polystyrene expanded beads 95% air.
O2 21%. HFC and PFC greenhouse, Propane hydrocarbon flammable; stratosphere 11-50km
Aerosol insect/deodorant/shaving cream spray: liquid evapo -> gas; now use nitrous oxide
acid_precipitation COAL burning, fall on Northeast.
acid_tree Kill mycorrhyzae, excess protons release cation minerals from soil.
acid_rain blood pH=7.35. Asian acid to western US! Pittsburgh/Youngstown steel/rust belt
greenhouse_effect Milankovitch cycles 2014 WARMEST year. TENNIS ball earth west-east=left-rite Milankovitch
Greenhouse effect: demo in a bottle
ice_cap Northern Sea Route, Northeast Passage; winds blow Antarctic sea ice Climate Change and the Yin-Yang of Polar Sea Ice: why is Antarctic sea ice increasing? As polar ice recedes, Maine could become a hub for North America
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