As warmer, lower-oxygen waters spread, domesticated fish are suffering as well.
In Chile, for instance, an algal bloom in 2016 killed nearly 12 percent of the country’s farmed salmon at a cost of $800 million. Scientists have now attributed that bloom to conditions that arose as a result of climate change, according to a new study published in the journal Scientific Reports.
But it won’t be the last time climate change is tied to die-offs in aquaculture operations, scientists say, and harmful algal blooms may be the prime cause of those losses.
“Climate is changing globally, and we have all experienced those changes in our lifetimes,” said Mauricio Urbina, a biologist at Chile’s University of Concepcion and a co-author of the study. “Therefore, these new and unexpected interactions or synergies are expected to occur more frequently.