Excess Ozone Chokes Plants, Accelerates Global Warming

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	Excess Ozone Chokes Plants, Accelerates Global Warming

linden_marie

1-10-2008 11:54 PM

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/4e0e4ab6-2b4a-4df9-a2c5-250cbb4573eb/D0B8A58E-D04C-40A3-96E8-7D611100AAAE/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.newstarget.com/022481.html" href="http://www.newstarget.com/022481.html" style="font-size: 11px;">www.newstarget.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newstarget.com/022481.html">Scientists have long known that ozone is a greenhouse gas, trapping radiation within <A href="http://www.newstarget.com/the_atmosphere.html">the atmosphere</A> and leading to rising global temperatures. But the new study suggests that ozone may have a much more significant climate impact by adversely affecting plants' ability to remove <A href="http://www.newstarget.com/carbon_dioxide.html">carbon dioxide</A> from the atmosphere.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newstarget.com/022481.html"><DIV>According to the researchers, high concentrations of ozone and carbon dioxide damage plants' ability to engage in photosynthesis. This weakens the plants, causing their stomata (pores in the leaves) to close. In turn, this reduces that amount of carbon dioxide or ozone that the plants are able to absorb.</DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newstarget.com/022481.html"><DIV>Under the high-sensitivity model, plants' ability to remove carbon dioxide from the atmosphere was reduced by 23 percent. Even under the low-sensitivity model, it was reduced by 14 percent.</DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newstarget.com/022481.html">"The indirect effect is of a similar magnitude, or even larger, than the direct effect. Arguably, we have been looking in the wrong place for the key impacts of ozone."</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/D0B8A58E-D04C-40A3-96E8-7D611100AAAE/blog/" title="blog or email this clip"><img src="http://content9.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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