Study finds that only 23 natural areas across the U.S have been systematically and exhaustively surveyed for bee biodiversity, and no others have been later replicated to compare changes over time. Accurate tracking efforts are essential to track the extent and nature of widespread declines in bees.

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Study finds that only 23 natural areas across the U.S have been systematically and exhaustively surveyed for bee biodiversity, and no others have been later replicated to compare changes over time. Accurate tracking efforts are essential to track the extent and nature of widespread declines in bees.