Fish resistant to marine heatwaves

Facts for Prelims (FFP)

 

Source: DTE

 Context:  A recent study conducted by researchers from Canada, Europe, and the United States reveals that fish are surprisingly resilient to marine heatwaves.

  

Key Findings:

  • The study found no substantial evidence that marine heatwaves have a significant impact on regional fish communities.
  • The study also investigated whether marine heatwaves caused changes in fish community composition, such as shifts from cold-water species to warm-water species (known as “tropicalisation“). However, no consistent pattern of such changes was observed due to marine heat waves.

 

Marine heatwaves, characterized by prolonged periods of warm ocean temperatures, can have devastating effects on marine ecosystems, including coral bleaching, seabird deaths, harmful algal blooms, and more.