Navigation Links
Jellyfish on the rise: UBC study
Date:4/18/2012

Jellyfish are increasing in the majority of the world's coastal ecosystems, according to the first global study of jellyfish abundance by University of British Columbia researchers.

In a study published in this month's edition of the journal Hydrobiologia, UBC scientists examined data for numerous species of jellyfish for 45 of the world's 66 Large Marine Ecosystems. They found increasing jellyfish populations in 62 per cent of the regions analyzed, including East Asia, the Black Sea, the Mediterranean, the Northeast U.S. Shelf, Hawaii, and Antarctica.

"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, a PhD student with the Sea Around Us Project at UBC and 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."

Jellyfish directly interfere with many human activities by stinging swimmers, clogging intakes of power plants, and interfering with fishing. Some species of jellyfish are now a food source in some parts of the world.

"By combining published scientific data with other unpublished data and observations, we could make this study truly global and offer the best available scientific estimate of a phenomenon that has been widely discussed," says Daniel Pauly, principal investigator of the Sea Around Us Project and co-author of the study. "We can also see that the places where we see rising numbers of jellyfish are often areas heavily impacted by humans, through pollution, overfishing, and warming waters."

Pauly adds that increasing anecdotal reports of jellyfish abundance may have resulted from an expansion of human activities in marine habitats, so the study also provides a concrete baseline for future studies.

The study also notes decreases in jellyfish abundance in seven per cent of coastal regions, while the remainder of the marine ecosystems showed no obvious trend.


'/>"/>

Contact: Lucas Brotz
l.brotz@fisheries.ubc.ca
604-307-9046
University of British Columbia
Source:Eurekalert  

Related biology news :

1. Global experts question claims about jellyfish populations
2. Are nuisance jellyfish really taking over the worlds oceans?
3. Jellyfish blooms transfer food energy from fish to bacteria
4. Jellyfish blooms shunt food energy from fish to bacteria
5. Through unique eyes, box jellyfish look out to the world above the water
6. Voracious comb jellyfish invisible to prey
7. The jellyfish-like salp: Most efficient filter-feeder in the deep, scientists discover
8. Scientists unravel evolution of highly toxic box jellyfish
9. Jellyfish joyride a threat to the oceans
10. Fireflies and jellyfish help illuminate quest for cause of infertility
11. New online report on massive jellyfish swarms released
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Jellyfish on the rise: UBC study
(Date:1/22/2016)... , Jan. 22, 2016 ... the addition of the "Global Biometrics ... to their offering. --> ... the "Global Biometrics Market in Retail ... --> Research and Markets ...
(Date:1/18/2016)... , Jan. 18, 2016  Extenua Inc., ... that simplifies the use and access of ubiquitous ... go-to-market partnership with American Cyber.  ... extensive experience leading transformational C4ISR and Cyber initiatives ... integrating the latest proven technology solutions," said ...
(Date:1/11/2016)... , Jan. 11, 2016  higi, the ... nearly 10,000 retail locations, web and mobile, today ... $40 million from existing investors. ... be devoted to further innovate higi,s health platform ... and web portal – including expanding services and ...
Breaking Biology News(10 mins):
(Date:2/4/2016)... Sinovac Biotech Ltd. ("Sinovac" or the "Company") (NASDAQ: ... China , today announced that the ... February 4, 2016 a preliminary non-binding proposal letter, dated ... V-Ming ( Shanghai ) Investment Holdings Co., ... Shenzhen ) Fund Management Co., Ltd., Beijing ...
(Date:2/4/2016)... ... February 04, 2016 , ... Many of the engineers ... 10 years. What sets them apart from other cuvette manufacturers is their supercharged ... their website. On top of this steady flow of inside information, they have ...
(Date:2/3/2016)... Feb. 3, 2016  With the growing need ... that is underway, therapies such as monoclonal antibodies, ... whole host of indications are in high demand. ... the development and production of these therapeutics. However, ... and high costs, novel approaches and novel expression ...
(Date:2/3/2016)... BRUNSWICK, N.J. , Feb. 3, 2016 /PRNewswire-USNewswire/ ... grants totaling more than $1 million for researchers ... are working on health-related research that demonstrates exciting ... this round of funding for the New Jersey ... for faculty members at these educational institutions— Princeton ...
Breaking Biology Technology: