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Research Reveals Climate-Driven Bird Collapse In Mojave Desert
Researchers at University of California, Berkeley, have published a study in the journal Proceedings of the National Academy of Sciences describing the collapse of the Mojave Desert bird community over the past century due to climate change.
To paraphrase the Bard: "There is special providence in the fall of a [sage] sparrow."
Extreme climates and scarce resources place desert dwellers on the knife-edge of survival, and deserts globally have borne the brunt of warming and drying over the past 50 years.
When researchers revisited sites of early-20th-century bird surveys by noted biologist Joseph Grinnell, they found that the sites had lost on average nearly half of species, and that 39 of 135 species had declined significantly due to habitat changes and less precipitation.
Because the crash went unbalanced by rising fortunes for other fauna, researchers believe it's a new normal that could worsen as the region grows hotter and drier.