Mass mortality events (mass die-offs) are increasing in frequency of occurrence — with regard to fishes, birds, and many other marine animals — according to new research from UC Berkeley’s Department of Environmental Science, Policy and Management; the University of San Diego; and Yale University.

The findings are the result of a comprehensive analysis of 727 mass die-offs — of around 2,500 different animal species — that occurred over the past 70-years. According to the findings of this analysis — die-offs amongst bird, fish, and marine invertebrate species, have been increasing in frequency notably over these last 7-decades.

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