Published on April 23rd, 2012 | by James Ayre

Jellyfish Populations on the Rise in Coastal Ecosystems


Jellyfish populations are growing in the majority of the world’s coastal ecosystems, according to a new study from the University of British Columbia.

In the study, the researchers examined data on numerous species of jellyfish from forty-five of the worlds sixty-six “Large Marine Ecosystems.” There was an increase of jellyfish in sixty-two percent of the studied regions.

blue jellyfish

“There has been anecdotal evidence that jellyfish were on the rise in recent decades, but there hasn’t been a global study that gathered together all the existing data until now,” says Lucas Brotz, the lead author of the study.

“Our study confirms these observations scientifically after analysis of available information from 1950 to the present for more than 138 different jellyfish populations around the world.”

The study also makes the connection between the areas seeing the rise in population, also being the same areas that have been most affected by humans through pollution, overfishing, and warmer waters.


Source: University of British Columbia
Image Credits: Michael Dawson/University of California; Group of Blue Jellyfish and Jellyfish via Shutterstock

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About the Author

‘s background is predominantly in geopolitics and history, but he has an obsessive interest in pretty much everything. After an early life spent in the Imperial Free City of Dortmund, James followed the river Ruhr to Cofbuokheim, where he attended the University of Astnide. And where he also briefly considered entering the coal mining business. He currently writes for a living, on a broad variety of subjects, ranging from science, to politics, to military history, to renewable energy. You can follow his work on Google+.

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