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:10/14/2014)... Mount Sinai-led research team has discovered a new kind of ... a cell that lines liver blood vessels, according to a ... . The existence of such a cell type contradicts current ... embryo, and may hold clues to origins of, and future ... from a single cell into a complex being made up ...
(Date:10/14/2014)... CA – October 14, 2014 – Scientists from The ... from the National Institutes of Health (NIH) to lead ... virus-induced hemorrhagic fever disease in Africa. The study aims ... why some patients die, while others survive the inflection. ... understand the basic mechanism of how Lassa fever virus ...
(Date:10/14/2014)... international team of researchers, led by the Chinese Academy ... Nature Genetics a brief genomic history of ... the tomato plant. , The C.M. Rick Tomato Genetics ... in this study by providing seed of both cultivated ... which builds on the first tomato genome sequence completed ...
Breaking Biology News(10 mins):Stem cell discovery challenges dogma on how fetus develops; holds insights for liver cancer and reg 2Stem cell discovery challenges dogma on how fetus develops; holds insights for liver cancer and reg 3Scripps Research Institute team receives $6.6 million to investigate deadly Lassa virus 2
... Department of Energy,s Savannah River National Laboratory (SRNL) ... University to decrease mold growth in flooded homes ... by the Department of Homeland Security (DHS) through ... University asked SRNL and Tuskegee University to join ...
... JOLLA, Calif., July 14, 2010 Put simply, a tumor ... the cell cycle the cell,s process of duplicating itself ... of proteins tells other proteins what to do and when ... regulation fail, cell growth can get out of hand. A ...
... -- The 52nd meeting of the American Association ... - 22, 2010 in Philadelphia, PA. AAPM ... broadly-based scientific and professional discipline encompassing physics principles ... includes medical physicists who specialize in research that ...
Cached Biology News:SRNL works to decrease hazards from mold in water damaged homes 2New role for the JNK protein 2Nanotech medicine, tumor tracking, new technologies and more 2Nanotech medicine, tumor tracking, new technologies and more 3Nanotech medicine, tumor tracking, new technologies and more 4Nanotech medicine, tumor tracking, new technologies and more 5Nanotech medicine, tumor tracking, new technologies and more 6Nanotech medicine, tumor tracking, new technologies and more 7Nanotech medicine, tumor tracking, new technologies and more 8Nanotech medicine, tumor tracking, new technologies and more 9Nanotech medicine, tumor tracking, new technologies and more 10Nanotech medicine, tumor tracking, new technologies and more 11Nanotech medicine, tumor tracking, new technologies and more 12Nanotech medicine, tumor tracking, new technologies and more 13Nanotech medicine, tumor tracking, new technologies and more 14Nanotech medicine, tumor tracking, new technologies and more 15Nanotech medicine, tumor tracking, new technologies and more 16Nanotech medicine, tumor tracking, new technologies and more 17
(Date:10/22/2014)... (PRWEB) October 21, 2014 The North ... concerned market North America with analysis and forecast of ... 2013, and is expected to reach $623.6 million by ... 2018. , Browse through the TOC of the North ... of the in-depth analysis provided. This also provides a ...
(Date:10/22/2014)... 2014 Grace Century, a private equity ... announces the addition of Dr. Yousef “Josh” Siddiqui ... team. Dr. Siddiqui will provide further healthcare expertise to ... of University College Medical School in the ... in 2001. With further certification as a General Practitioner ...
(Date:10/22/2014)... 2014 Nuvilex, Inc. (OTCQB: NVLX) – According ... worldwide are living with diabetes, with  that number expected ... global market for diabetes treatments is approximately $500 billion.  ... died from pancreatic cancer.  Pancreatic cancer is the fourth ... the United States , and according ...
(Date:10/20/2014)... 2014 Convey Computer , the ... from Iowa State University won first place in the ... Convey HC-2ex, the team’s solution achieved the highest overall ... the second place finisher. , Experts from all segments ... month long challenge, using a variety of design tools, ...
Breaking Biology Technology:The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 2The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 3The North American crystal oscillator market is expected to reach $623.6 million by 2018 - New Report by MicroMarket Monitor 4Dr. Yousef Siddiqui joins the Grace Century Advisory Team 2Nuvilex Brief Analyst Report: Thinking Outside the Box by BrokerBank Securities, Inc. 2Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 2Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 3
... Yves Lionel Assant is,the new Chairman of Gerresheimer,s ... was already a member of the Supervisory Board. ... position for personal reasons. He,remains a member of ... & life science supply and services,company with market ...
... Stephen Simes, chief executive,officer of BioSante Pharmaceuticals, ... be featured in an exclusive interview with, http://www.wallst.net ... EDT. The interview,will be posted on http://www.wallst.net ... The interview will cover topics including BioSante,s ...
... Calif., Sept. 24 Today, the rights ... utilize PARI,s,eFlow electronic nebulizer for aerosol delivery ... of Corus Pharma in,August 2006, this is ... eFlow is featured prominently in the development ...
Cached Biology Technology:WallSt.net Announces Upcoming Interview with CEO of BioSante Pharmaceuticals 2Pediatric Asthma Programs Featuring PARI Pharma's eFlow Acquired by AstraZeneca 2