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Monarch Butterflies and Milkweed


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#1    some new guy

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Posted 22 August 2014 - 09:32 AM

Fewer monarch butterflies are crossing North America to winter in Mexico, and the biggest culprit seems to be the disappearance of milkweed in the United States. The trend is particularly troubling because monarchs have long been considered both an indicator of our ecological health and a representative of pollinator populations.

Monarch butterflies travel up to 3,000 miles each fall to their wintering site in central Mexico, which was discovered by National Geographic grantee Fred A. Urquhart and his team in 1975. Once the butterflies arrive, a census by citizen scientists estimates how many have completed the trip.
In 2004, an estimated 550 million completed the winter migration, while in 2013 only 33 million arrived. Further, between 2012 and 2013, there was a 43.7 percent decrease in the area occupied by the butterflies in their winter sanctuaries

http://news.national...cology-science/

BEST - Ron


#2    Merc14

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Posted 22 August 2014 - 12:53 PM

Plant some milkweed in those bare spots in your backyard folks and help these beautiful butterflies out.

Edited by Merc14, 22 August 2014 - 12:54 PM.

Believing when there is no compelling evidence is a mistake.  The idea is to withhold belief until there is compelling evidence and if the universe does not comply with our predispositions, okay, then we have the wrenching obligation to accommodate to the way the universe really is.  - Carl Sagan

"There is no difference between Communism and Socialism, except in the same ultimate end:  Communism proposes to enslave men by force, Socialism-by the vote.  It is merely the difference between murder and suicide."  - Ayn Rand




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