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According to a study by William Cheung, professor of marine biology at the University of British Columbia, the lack of oxygen affects the development of fish. Some species are now smaller, causing cascading consequences.
Fish are already experiencing the first impacts of global warming in concrete terms. And this translates par a physical modification. “We have found that the body size of fish decreases by 20-30% for every additional degree in water temperature.“says William Cheung, professor of marine biology at the University of British Columbia. (Vancouver) and author of the study on the impact of climate change on fish growth. Among the species already affected, whiting, herring, sole and sardines.
“To grow, fish are conditioned to the size of their gills“, explains Jean Chamoulaud on the set of franceinfo. Therefore, the lack of oxygen prevents optimal growth of these animals. But that’s not all. Indeed, the concept of predator-prey is also impacted and the study also estimates at 600 the number of species which “will see their weight decrease from -14% to -24% by 2050“. Finally, this reduction will also have an impact on populations and their economies.
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