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"By combining published scientific data with other unpublished data and observations, we could make this study truly global and offer the best available scientific estimate of a phenomenon that has been widely discussed,"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:6/3/2016)... June 3, 2016 ... Nepal hat ein ... hochsicherer geprägter Kennzeichen, einschließlich Personalisierung, Registrierung und ... der Produktion und Implementierung von Identitätsmanagementlösungen. Zahlreiche ... im Januar teilgenommen, aber Decatur wurde als ...
(Date:6/2/2016)... LONDON , June 2, 2016 ... Systems, Manned Platforms, Unmanned Systems, Physical Infrastructure, Support & ... intelligence provider visiongain offers comprehensive analysis of ... that this market will generate revenues of $17.98 billion ... Systems acquired DVTEL Inc, a leader in software and ...
(Date:5/20/2016)...  VoiceIt is excited to announce its new ... By working together, VoiceIt and VoicePass will offer ... take slightly different approaches to voice biometrics, collaboration ... usability. Both ... "This marketing and technology partnership allows ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... , June 24, 2016  Regular discussions on a ... take place between the two entities said Poloz. ... Ottawa , he pointed to the country,s ... the federal government. ... said, "Both institutions have common economic goals, why not sit ...
(Date:6/23/2016)... ... June 23, 2016 , ... UAS LifeSciences, one of the ... brand, UP4™ Probiotics, into Target stores nationwide. The company, which has been manufacturing ... to its list of well-respected retailers. This list includes such fine stores as ...
(Date:6/23/2016)... Lawrence, MA (PRWEB) , ... June 23, 2016 ... ... the Peel Plate® YM (Yeast and Mold) microbial test has received AOAC Research ... test platform of microbial tests introduced last year,” stated Bob Salter, Vice President ...
(Date:6/23/2016)... ... June 23, 2016 , ... STACS DNA Inc., the sample tracking software company, ... Crime Laboratory, has joined STACS DNA as a Field Application Specialist. , “I ... President and COO of STACS DNA. “In further expanding our capacity as a scientific ...
Breaking Biology Technology: