Rising CO2 levels threaten bees
May 3, 2016
From: Agri-News
WEST LAFAYETTE, Ind. — Rising levels of atmospheric carbon dioxide have reduced protein in goldenrod pollen, a key late-season food source for North American bees, a Purdue University study shows.
Researchers found that the overall protein concentration of goldenrod pollen fell about one-third from the onset of the Industrial Revolution to the beginning of the 21st century.
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