Greg Asner/The Associated Press
The paper is the first to tote up the cumulative effects of threats faced by tropical coral reefs from overfishing to pollution to climate change, the authors say.It combines data from myriad sources. That’s despite increased fishing efforts. The paper finds that what it calls “catch per unit effort” has declined about 60 per cent.Imagine a fisherman with one hook casting it for an hour, Cheung said.
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