Short life of British mayfly halved by climate change

National Geographic: Already known for its brief adult existence--a mayfly commonly dies within hours of becoming airborne--the insect’s life cycle is being accelerated by rising temperatures, according to findings from a river immortalized by Izaak Walton in The Compleat Angler. A five-year study on the River Dove in northern England found that Ephemera danica--a species known simply as the mayfly or green drake--is reaching maturity in one year instead of two. This switch to a one-year life cycle “started after......

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