Shark overfishing hurts coral reefs

Shark around coral reef.

Overfishing for sharks is having detrimental effects on coral reefs, finds a new study published in the journal PLOS One.

The research is based on long-term monitoring reefs off northwestern Australia. The authors, led by Jonathan Ruppert, formerly of the University of Toronto and now with York University, compared community structure between several atoll-like reefs. Some of the reefs were protected, while some were open to exploitation by Indonesian fishermen using traditional fishing techniques. Indonesian fishermen tend to target high value species like sharks.

The researchers found the overfishing of sharks can result in profound ecological changes.

“The reefs provided us with a unique opportunity to isolate the impact of over-fishing of sharks on reef resilience, and assess that impact in the broader context of climate change pressures threatening coral reefs,” said Ruppert. “Shark fishing appears to have quite dramatic effects on coral reef ecosystems.”

Read the full story here.

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About jensera

Jennifer Harrington is a Toronto-based illustrator, writer and graphic designer. She illustrated the best-selling children’s book series 'A Moose in a Maple Tree,' which includes the titles 'A Moose in a Maple Tree,' 'The Night Before a Canadian Christmas' and 'Canadian Jingle Bells.' She is also the owner of JSH Graphics, a boutique graphic design agency that specializes in print and web advertising. With her latest project, Eco Books 4 Kids, Jennifer has partnered with illustrator Michael Arnott to create a series of ecologically-themed ebooks for children. Her next book, 'Spirit Bear,' is due for release in the Summer of 2013. Jennifer offers two different school presentations for her 'Moose in a Maple Tree' collection, an illustration demonstration and a Christmas concert series, which can be booked at www.amooseinamapletree.com. She will be taking bookings for school readings of 'Spirit Bear' beginning in October 2013.

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