Urban Ecoist

Wow, try saying that one three times fast…

I ran across this little story in one of last month’s Newsweek magazines. My not-so-green secret is that I get a lot of magazines in the mail. I do recycle them, but with printing, shipping and the paper stock involved, it is still a bit of a waste, I admit. But then again, I would be using electricity to read magazines online, so either way I am screwed. And I only get magazines so I have something to read on the bus, which is better than driving my car…

But I disgress.

Anyhoo, this article in the August 2, 2008 Newsweek featured news on pollen and pollen-producing trees and plants, like ragweed — the bane of many an allergy sufferer, myself included. It seems that just one more depressing effect of global warming is that plants and trees will produce more pollen in a warmer world. Not only that but with the spring warm-up coming sooner and sooner every year, trees are pumping out pollen earlier and the allergy season is thus extended by cutting into what we used to call winter.

Here are some selected quotes:

Global warming and increased atmospheric carbon dioxide from burning fossil fuels appear to supercharge the growth of ragweed. And not only does ragweed grow larger and produce more pollen, its pollen is more allergenic, studies show.

Oh, great. Super-pollen. I cannot wait to experience that.

To test his ragweed hypothesis, [Lewis] Ziska [a weed ecologist with the U.S. Department of Agriculture's Crop Systems and Global Change Laboratory] planted the weed in three plots: a rural farm, a semi-rural county park and downtown Baltimore. The urban plot’s ragweed produced four times the pollen count of the rural site. “Cities already have more carbon dioxide than rural areas and are hotter,” Ziska says. “Cities are a surrogate for global warming.”

Maybe that is why I supposedly “grew into” bad allergies. I lived out in the country during most of my childhood.

Allergists are also worried. One new concern: a startling rise in the amount of tree pollen. Warmer temperatures in Europe are causing birch trees to bloom earlier, prompting an earlier and perhaps longer allergy season. Studies at Duke University show that elevated carbon dioxide increases pollen production of loblolly pines. Allergists suspect that record pollen counts are contributing to the onslaught of new allergy and asthma patients. “I’m seeing an epidemic of new cases,” says New York City allergist Clifford Bassett.

So much for being a tree-hugger, right?

If plant biomass increases due to elevated CO2 and global warming, fungi may proliferate as well, they suspect. Fungal spores are problematic because they affect air quality indoors as well as out. Higher temperatures will lead to increased use of air conditioners, which spread spores if improperly maintained. Heavier rainstorms and floods predicted under climate-change scenarios will also increase indoor dampness, allowing fungal spores to proliferate in homes and buildings, according to the 2007 study “Climate Change, Aerobiology, and Public Health in the Northeast United States.”

So, mushrooms will become the new enemy? I wonder when the Republicans will start exploiting that fear…

The article also mentions that us city-dwellers suffer the double whammy of increased smog due to ground level ozone — couple that with more powerful and just more pollen, and yeah, maybe it is time to look for a pleasant little cottage out in the country. Also, poison ivy was discovered to produce more potent poison when hit with increased levels of CO2. And finally, if I haven’t freaked you out enough, warmer temperatures usually result in more insects, such as stinging insects, like yellow jackets. In many places, like Alaska, rising temperatures are bringing in new insect populations. Reports of severe stings from yellow jackets and their equally-stinging cousins have increased 600 per cent since 2000 up in the 49th state.

All the more reason to try and mitigate this whole global warming issue. Unfortunately, no one seems to be all that concerned about it in the US Government. Maybe we should change the government…

Newsweek, allergy, allergies, asthma, pollen, pollen counts, global warming, CO2, yellow jackets, allergic reactions, Alaska, rural, urban, smog, ozone