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Global warming is only one part of extremely complex and interconnected changes.
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global dimming
http://video.google.com/videoplay?docid=1027879546389218797&hl=en
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http://www.globalpublicmedia.com/articles/856
…changes in the times of flowering, migrations, nest building, and egg laying. Because every species would respond to climate change at its own rate, ecological communities would start to “disassemble,” as mismatches occurred between, say, caterpillars and the availability of the plants they eat.
Lovejoy said that most prominent system change to date was the increasing acidity of the oceans as they absorbed some of the excess carbon dioxide. The oceans are now 30% more acidic than they were in pre-industrial times. “Two-thirds of the earth’s surface is changing its chemistry,” Lovejoy said. “This has been a bit of a surprise to the scientific community, you didn’t even hear about it two or three years ago.”
Vast numbers of ocean species build skeletons and shells from calcium carbonate. “At a certain point, many [of the species building shells] will have trouble constructing their shells, or their shells could go into solution,” Lovejoy explained. The increasing warmth of the oceans was a grave threat to coral reefs, which are based on an animal/algae partnership. A small increase in temperature can cause coral to expel the algae, producing coral bleaching. Repeated bleaching can cause the reef to die.
Lovejoy noted that a doubling of carbon dioxide would be disastrous for the natural world. Even stabilizing CO2 at 450 parts per million, which some environmental groups have labeled as “safe,” we would be creating a world in which the ecological impacts would be “pretty messy.”
In other testimony, witnesses described how warmer winters and warmer nights were unleashing a variety of insect pests, like the woolly adelgid that has decimated forests in the Virginia mountains, or the pine bark beetle that has destroyed huge swathes of timber in the Pacific Northwest. Warming temperatures in the Chesapeake Bay were creating an ever-larger “dead” zone at the bottom of the bay in the summer, an area with too little oxygen for fish or other animals to survive. And warmer weather increased the number of striped bass, one of the Bay’s prime sports fish, infected with bacteria that produce large red lesions on the fish.
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http://reverenceforlife.org
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Oil from algae
by David Zaks and Chad Monfreda
http://www.worldchanging.com/archives/006025.html
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http://alternative-energy-bloggers.com
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Audobon Society of Western Pennsylvania
http://aswp.org/conservation.html
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Pittsburgh area environmental organizations
http://carnegielibrary.org/subject/environment/orgs.html
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Rachel Carson Institute
http://chatham.edu/RCI/g_horizons.html
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http://growpittsburgh.org/
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