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Fish Are Evolving to Be Smaller, Threatening Global Food Supply
Evolutionary changes in nearly 3,000 fish species will reduce global fishery yields by up to 30% under high-emission scenarios, impacting protein availability worldwide.
- The Science paper found that evolution will reduce global fish yields by one-fifth under current warming and up to 30 percent in high-emissions scenarios, according to the study published today.
- Warming waters drive fish to grow faster, mature earlier, and decrease maximum size, reducing sustainable harvests despite helping fish persist.
- In total, the life histories of nearly 3,000 fish species were tested to corroborate the model's accuracy, which projected future yields across 43 major fisheries worldwide.
- The study predicts reduced protein availability and bigger industry losses, meaning over 1.1 billion meals lost annually and 50 percent higher fishing industry losses, David Reznick said.
- This evolution is good for fish but bad for fisheries, Professor Craig White said, urging strong climate policy to limit warming to 1.5 degrees Celsius and preserve roughly 18 million metric tons.
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Fish stocks are on the line: Climate change impacts global fishing yields
As the saying goes, there are plenty more fish in the sea—but climate change is rapidly challenging that notion, with fish stocks around the world under threat. New modeling from Monash University predicts how climate change will alter fishing yields in many regions, threatening food security, livelihoods and the future of marine life as a sustainable food source.
·United Kingdom
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Coverage Details
Total News Sources15
Leaning Left7Leaning Right0Center2Last UpdatedBias Distribution78% Left
Bias Distribution
- 78% of the sources lean Left
78% Left
L 78%
C 22%
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