Navigation Links
'Jellyfish joyride' a threat to the oceans
Date:6/9/2009

New research led by CSIRO Climate Adaptation Flagship and University of Queensland scientist, Dr Anthony Richardson, presents convincing evidence that this 'jellyfish joyride' is associated with over-fishing and excess nutrients from fertilisers and sewage.

"Dense jellyfish aggregations can be a natural feature of healthy ocean ecosystems, but a clear picture is now emerging of more severe and frequent jellyfish outbreaks worldwide," Dr Richardson says.

"In recent years, jellyfish blooms have been recorded in the Mediterranean, the Gulf of Mexico, the Black and Caspian Seas, the Northeast US coast, and particularly in Far East coastal waters.

"The most dramatic have been the outbreaks in the Sea of Japan involving the gargantuan Nomura jellyfish which can grow up to 2 m in diameter and weigh 200 kg."

The new research, by Dr Richardson and colleagues at the University of Miami, Swansea University and the University of the Western Cape, has been published in the international journal; Trends in Ecology and Evolution, in time for World Oceans Day on 8 June.

"Fish normally keep jellyfish in check through competition and predation but overfishing can destroy that balance," Dr Richardson says. "For example, off Namibia intense fishing has decimated sardine stocks and jellyfish have replaced them as the dominant species."

Climate change may favour some jellyfish species by increasing the availability of flagellates in surface waters a key jellyfish food source. Warmer oceans could also extend the distribution of many jellyfish species.

"Mounting evidence suggests that open-ocean ecosystems can flip from being dominated by fish, to being dominated by jellyfish," Dr Richardson says "This would have lasting ecological, economic and social consequences.

"We need to start managing the marine environment in a holistic and precautionary way to prevent more examples of what could be termed a 'jellyfish joyride'."


'/>"/>

Contact: Edwina Hollander
edwina.hollander@csiro.au
61-893-336-569
CSIRO Australia
Source:Eurekalert  

Related biology news :

1. Fireflies and jellyfish help illuminate quest for cause of infertility
2. New online report on massive jellyfish swarms released
3. Scientists discover stinging truths about jellyfish blooms in the Bering Sea
4. Fossil record reveals elusive jellyfish more than 500 million years old
5. Invasive Australian jellyfish sighted in Gulf of Mexico in summer 2007
6. Scientists examine human behavior and the threat of disease
7. Jeepers creepers: Climate change threatens endangered honeycreepers
8. Scientists urge world leaders to respond cooperatively to Pacific Ocean threats
9. Wildlife trade threatens public health and ecosystems
10. Climate change threatens Lake Baikals unique biota
11. UIC biologists use DNA to study migration of threatened whale sharks
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Jellyfish joyride' a threat to the oceans
(Date:1/13/2017)... WASHINGTON, N.Y. , Jan. 13, 2017 /PRNewswire/ ... of technology solutions for the homecare industry, including ... of homecare industry expert, Justin Jugs, as Senior ... brings more than 15 years of homecare experience ... team in developing strategic plans to align Sandata,s ...
(Date:1/12/2017)... 12, 2017  New research undertaken by Fit Small ... future.  1,000 participants were simply asked which office technology had ... may consider standard issue.  Insights on what will ... gathered from futurists and industry leaders including Penelope Trunk ... .  Some of these findings ...
(Date:1/11/2017)... , Jan. 11, 2017 Intoxalock, a ... with the release of its patent-pending calibration device. With ... reliably perform calibrations, securely upload data logs and process ... the customer. "Fighting drunk driving through the ... the public at large, but also for the customer ...
Breaking Biology News(10 mins):
(Date:1/20/2017)... -- Stock-Callers.com explores the Biotech industry to ... recent performances of select equities. In this morning,s lineup ... Abeona Therapeutics Inc. (NASDAQ: ABEO ), Theravance ... Therapeutics Inc. (NASDAQ: SAGE ). According to ... market size is expected to reach $604.40 billion by 2020 due to ...
(Date:1/20/2017)... 2017 http://www.Financialbuzz.com - ... leading causes of death worldwide. There were 8.2 million ... cancer related deaths increased gradually over time, the death ... of various cancers continues to drive demand of biological ... Global Market Insights, Inc. cancer biological therapy market size was ...
(Date:1/19/2017)... Jan 19, 2017 Research and Markets has ... Technology, Biomolecules, Cancer Type, Application - Global Opportunity Analysis and Industry ... ... the global market is projected to reach $15,737 million by 2022 ... 2016 to 2022. Omic technologies segment accounted for ...
(Date:1/19/2017)... Ky. and HOUSTON ... Inc. ("NX Prenatal") today announced the formation of ... together leading clinicians and industry veterans who enhance ... company as it accelerates development of its novel ... to provide medical, clinical and strategic guidance for ...
Breaking Biology Technology: