Posted by:
Chris_McMartin
at Thu Feb 10 17:55:23 2011 [ Email Message ] [ Show All Posts by Chris_McMartin ]
http://www.cnah.org/pdf_files/1030.pdf
Here's a synopsis: Using Rodda's limited variables (he only used temperature and rainfall), Pyron et al plugged in information for the python's KNOWN range, and the model got it all wrong (showed the python should be far more wide-ranging in its native habitat than it actually occurs--including THE ARABIAN PENINSULA). Then they used additional climate parameters (such as temperature extremes the pythons experience, not just averages) and achieved a closer match to the known Python molurus range. Using these same parameters, when they re-mapped the US for potential range expansion, the result was "southern FL and TX."
Pyron and co. were careful to say this revelation shouldn't downplay the harmful aspects of invasive species; just that you need to be diligent in analyzing climate data.
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Chris McMartin
www.mcmartinville.com
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Link to Pyron Paper - Chris_McMartin, Thu Feb 10 17:55:23 2011