Navigation Links
Jellyfish experts show increased blooms are a consequence of periodic global fluctuations
Date:12/31/2012

Scientists have cast doubt on the widely held perception that there has been a global increase in jellyfish.

Blooms, or proliferations, of jellyfish can show a substantial, visible impact on coastal populations clogged nets for fishermen, stinging waters for tourists, even choked cooling intake pipes for power plants and recent media reports have created a perception that the world's oceans are experiencing trending increases in jellyfish. Now, a new multinational collaborative study, involving the University of Southampton, suggests these trends may be overstated, finding that there is no robust evidence for a global increase in jellyfish over the past two centuries.

The results of the study, which includes lead co-author Dr Cathy Lucas, a marine biologist at the University of Southampton, appear in the latest issue of Proceedings of the National Academy of Science (PNAS manuscript # 2012-10920R).

The key finding of the study shows global jellyfish populations undergo concurrent fluctuations with successive decadal periods of rise and fall, including a rising phase in the 1990s and early 2000s that has contributed to the current perception of a global increase in jellyfish abundance. The previous period of high jellyfish numbers during the 1970s went unnoticed due to limited research on jellyfish at the time, less awareness of global-scale problems and a lower capacity for information sharing (e.g. no Internet).

While there has been no increase over the long-term, the authors detected a hint of a slight increase in jellyfish since 1970, although this trend was countered by the observation that there was no difference in the proportion of increasing vs. decreasing jellyfish populations over time.

Dr Cathy Lucas, who is based at the National Oceanography Centre, Southampton, says: "Sustained monitoring is now required over the next decade to shed light with statistical confidence whether t
'/>"/>

Contact: Glenn Harris
G.Harris@soton.ac.uk
44-023-805-93212
University of Southampton
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Lethal stings from the Australian box jellyfish could be treated with zinc
2. Artificial jellyfish swims in a heartbeat
3. Medusa reimagined: Caltech-led team reverse engineers a jellyfish with the ability to swim
4. Jellyfish on the rise: UBC study
5. Preserve the services of mangroves -- Earths invaluable coastal forests, experts urge
6. Leader experts in neurorehabilitation gather in Toledo, Spain
7. The IPCC Report on Climate Change - Swedish professor Thomas Sterner selected as 1 of the experts
8. World experts enlist to help Malaysia mitigate problem of poorer nutrition as incomes rise
9. Experts propose cyber war on cancer
10. Major migration of bird experts flock to Vancouver
11. World experts meet in Edinburgh to consider how life experiences impact on our genes
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Jellyfish experts show increased blooms are a consequence of periodic global fluctuations
(Date:4/17/2014)... A new modeling study suggests that fish consumption ... infant exposure to long-lived contaminants like persistent organic ... a team of researchers including University of Toronto ... Wania, looks at how different levels of environmental ... behavior of chemicals in the body influenced exposure ...
(Date:4/17/2014)... Kansas State University engineer has developed a patented ... improvised explosive devices. The same technique could help ... Steven M. and Kay L. Theede chair in ... engineering, and his research team have created a ... in car trunks. The distance detection method ...
(Date:4/17/2014)... Several parasites and pathogens that devastate honeybees in Europe, ... Africa, but do not appear to be impacting native ... team of researchers., The invasive pests include including ... East African honeybees appear to be resilient to these ... used to control pests in Europe, Asia and the ...
Breaking Biology News(10 mins):Fish consumption advisories fail to cover all types of contaminants 2Patented research remotely detects nitrogen-rich explosives 2East African honeybees are safe from invasive pests… for now 2East African honeybees are safe from invasive pests… for now 3
... PHILADELPHIAThe Academy of Natural Sciences today announced the revival ... an early 19th-century nature magazine of which only 13 complete ... Museum of Nature was published privately in London between 1810 ... one or two color plates. In it, Perry set out ...
... NY) Matthew Levy, Ph.D., assistant professor of biochemistry ... has been awarded more than $700,000 by Stand Up ... Levy,s work will focus on creating self-guiding drugs that ... serious or unpleasant side effects of current therapies. Dr. ...
... Just three months after the Euro 5 Norm ... car models, researchers at the Technische Universitaet Muenchen (TUM) ... meeting the more stringent Euro 6 emissions standard. A ... Chair of Internal Combustion Engines has succeeded in reducing ...
Cached Biology News:The Academy of Natural Sciences and Temple Press revive rare natural history work in new book 2Einstein receives high-risk/high-reward cancer research funding 2Einstein receives high-risk/high-reward cancer research funding 3Munich lab demonstrates diesel truck engine with barely measurable emissions 2Munich lab demonstrates diesel truck engine with barely measurable emissions 3
(Date:1/15/2014)... (PRWEB) January 15, 2014 Cynvenio, a ... management through the genomic analysis of tumor cells in ... Finder™, a web-based cancer decision support application powered by ... with Cynvenio’s ClearID™ genomic test, Therapy Finder will provide ...
(Date:1/15/2014)... Houston, TX (PRWEB) January 15, 2014 ... Alzheimer’s disease, and about 1 in 3 seniors will ... ( source ). These jaw-dropping figures have shocked many ... function and, hopefully, help prevent these tragic age-related cognitive ...
(Date:1/15/2014)... 15, 2014 Freeslate, Inc ., ... announced that Lupin Limited, one of India’s top five ... Protégé PharmD System for high throughput solid form ... focused on a wide range of quality, affordable generic ...
(Date:1/14/2014)... 2014 Histogen, Inc., a regenerative medicine ... grown under simulated embryonic conditions, today announced that they ... Medical, Inc. for physician-dispensed aesthetic products containing Histogen’s proprietary ... agreement is an amendment to the existing license between ...
Breaking Biology Technology:Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3Biohack Pure Offers 5 Tips for Increasing Memory in 2014 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3
... of the bacterium Caulobacter crescentus , researchers at the ... production factory, making useful proteins that can act as vaccines ... Society for General Microbiology,s meeting at Heriot-Watt University, Edinburgh, today ... bacterium that has a single protein layer on its surface. ...
... REDWOOD CITY, Calif., Sept. 4 Cardica, Inc. (Nasdaq: ... received a notice from the Listing Qualifications Department of The ... be delisted from NASDAQ based upon NASDAQ staff,s determination that ... stockholders, equity requirement for continued listing on the NASDAQ as ...
... BEIJING, Sept. 4 /PRNewswire-Asia/ -- Sinovac Biotech Ltd. ... products in China, announced today that,the Ministry of Industry ... issued the initial order to Sinovac to purchase H1N1 ... order, Sinovac is,required to complete the production of 3.3 ...
Cached Biology Technology:Cardica Receives NASDAQ Notification of Non-Compliance 2Sinovac Obtains Initial Order of H1N1 Vaccine from Chinese Central Government 2Sinovac Obtains Initial Order of H1N1 Vaccine from Chinese Central Government 3
...
... polyclonal to MSY2/YBOX2 ( Abpromise ... Antigen: Synthetic peptide derived ... 178-227 of human YBX2. (Note: ... proprietary). ...
... EVO96R and Freedom EVO384R are fast multi-channel ... in three different sizes, with a multi-channel ... deliver significant time saving, with true parallel ... setup of your assays with the Freedom ...
... Aminopropylsilane is perhaps the ... chemistry for microarray experiments. ... for Microarrays provide a ... for printing PCR products ...
Biology Products: