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Re: Higher Carbon Dioxide May Give Pine Trees A Competitive Edge

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avatar Higher Carbon Dioxide May Give Pine Trees A Competitive Edge
August 04, 2009 06:00PM
ScienceDaily (Aug. 4, 2009) — Pine trees grown for 12 years in air one-and-a-half times richer in carbon dioxide than today's levels produced twice as many seeds of at least as good a quality as those growing under normal conditions, a Duke University-led research team reported Aug. 3 at a national ecology conference.

http://www.sciencedaily.com/releases/2009/08/090803173246.htm
avatar Re: Higher Carbon Dioxide May Give Pine Trees A Competitive Edge
August 05, 2009 12:53PM
That's because CO2 levels in the atmosphere, compared to records over the last 300 million years (determined from a variety of sources, mainly rock samples), is at an "historic" low. Cambrian level CO2 levels were 18 times higher than today. Use your google noodle and find the truth inconvenient to Al Gore.
avatar Re: Higher Carbon Dioxide May Give Pine Trees A Competitive Edge
August 05, 2009 01:07PM
Please stop getting your "facts" from Rush.
avatar Re: Higher Carbon Dioxide May Give Pine Trees A Competitive Edge
August 05, 2009 01:19PM
Quote
Vince
That's because CO2 levels in the atmosphere, compared to records over the last 300 million years (determined from a variety of sources, mainly rock samples), is at an "historic" low. Cambrian level CO2 levels were 18 times higher than today. Use your google noodle and find the truth inconvenient to Al Gore.


Perhaps that is why only Nevadan microbial 'crud' existed on the land at that time:
http://en.wikipedia.org/wiki/Cambrian_Period

{Vince, once again you have astounded us with the depth of your knowledge.]



Edited 1 time(s). Last edit at 08/05/2009 01:35PM by szalkowski.
avatar Re: Higher Carbon Dioxide May Give Pine Trees A Competitive Edge
August 06, 2009 06:14PM
Check out this article rearding CO2.

http://www.newsweek.com/id/208164

Jim
avatar Re: Higher Carbon Dioxide May Give Pine Trees A Competitive Edge
August 05, 2009 01:37PM
avatar Re: Higher Carbon Dioxide May Give Pine Trees A Competitive Edge
August 05, 2009 03:07PM
Quote
Vince
http://www.geocraft.com/WVFossils/Carboniferous_climate.html

You are advocating pond scum? Ok, if that's your thing...
avatar Re: Higher Carbon Dioxide May Give Pine Trees A Competitive Edge
August 05, 2009 02:23PM
This issue is not how much the earth has changed since origin, but how has it changed recently compared to similar intervals in the recent past.

The question is how did the CO2 change between 500,000 and 499,800 yrs ago? Or choose any 200 yr interval that you want in the last 600,000 yrs. Did that 200 year period represent the sort of CO2 change and temperature change earth scientists are reporting for the last 200 yrs? Not according to the journal Science:

http://www.sciencemag.org/cgi/content/full/310/5752/1313

See pages 2 and 3 in this Am Ass for Adv of Science publication:

http://www.aaas.org/news/press_room/climate_change/media/4th_spm2feb07.pdf






The cure for a fallacious argument is a better argument, not the suppression of ideas.
-- Carl Sagan
avatar Re: Higher Carbon Dioxide May Give Pine Trees A Competitive Edge
August 05, 2009 03:32PM
avatar Re: Higher Carbon Dioxide May Give Pine Trees A Competitive Edge
August 05, 2009 03:37PM
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