Science!: Four years ago, "cod populations were healthy and growing"; now they're allegedly "anemic"; CO2 blamed

With drastic fishing cuts expected Thursday, blame for disappearing cod shifts to the ocean - Science - The Boston Globe

Warming waters and an evolving ocean ecosystem possibly related to man-made climate change are contributing to the anemic populations, not just decades of overfishing, government officials say.
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Fishermen are struggling to comprehend how the sacrifices they made in the last decade to idle boats and catch fewer fish were for naught. Only four years ago, scientists said cod populations were healthy and growing, a rosy assessment that unraveled last year when researchers discovered serious errors in their analysis had led them to overestimate Gulf of Maine cod by nearly 300 percent.