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View Diary: Industrial agriculture is killing Monarch butterflies says Ellen Moyer (65 comments)

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  •  It isn't a problem of conversion to farmland (0+ / 0-)

    or industrial use in Mexico. Monarchs in winter congregate in astoundingly dense masses, thousands hanging one from the other from every leaf of the trees they choose. All those millions of monarchs are wintering together in an area of tens of acres, not square miles.

    Illegal logging is a big concern because every tree is a huge loss. Yes, the monarchs have to get there, passing through the farmland and feeding, but once they get there I assume they do what they did in the California overwintering spot I lived near as a boy - just hang on to each other and wait until spring. Hoping someone doesn't cut down their tree and crush a million of them.

    •  Mexican forests (1+ / 0-)
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      ypochris

      That's my understanding too. Logging is essentially irreversible in the sense that it takes decades for the trees to grow back (I've written a number of articles on Huffington Post on this subject). In Mexico, they can prevent further logging and my understanding is that this is pretty effective now (though tragically late in the game).  I've also read that local people need to be given more financial incentives to leave the trees alone. By contract, in the U.S., planting milkweeds is easy and fast.

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