Dead Fish Washed Ashore during Golden Alga Toxic Bloom

Large fish more vulnerable to climate change-induced fish kills

Dead Fish Washed Ashore during Golden Alga Toxic Bloom

Reference image of dead fish washed ashore during a golden algae toxic bloom. Photo by Michael Hooper, USGS.

Climate change-induced droughts and fish kills affect larger fish more severely than smaller individuals, according to new research.

In a paper published in Environmental Biology of Fishes, researchers from Leiden University, Sportvisserij Zuidwest Nederland and the Sea Around Us initiative at the University of British Columbia compared evidence from drought-induced fish kills in the Netherlands, fisheries management literature and multiple physiological studies. They confirmed that when water gets warmer and deoxygenated, larger and older individuals within a species tend to die in greater numbers than their smaller and younger counterparts.

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Marina World Oceans Day

Explore the Sea Around Us database – in two minutes

Since 1999, the Sea Around Us – under the leadership of Dr. Daniel Pauly – has been the purveyor of fisheries catch data and associated indicators that have allowed researchers, NGOs, government agencies, and intergovernmental organizations, among others, to conduct a variety of studies that support efforts to protect our global ocean and the marine biodiversity that lives within it.

To celebrate World Oceans Day 2023, we prepared a short, guided tour through our database to help you quickly familiarize yourself with its main features.