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:11/4/2014)... research study examining only marketing directed at children ... restaurants has found that the majority of black, ... such marketing tactics. , Authored by Arizona State ... study is the first to examine the use ... of fast food restaurants and its relationship to ...
(Date:11/4/2014)... A majority of Madagascar,s 101 species of lemurs are ... for the rainforests they call home. A new study ... can have on rainforest tree populations, which raises concerns ... the region,s rich biodiversity. , A large proportion of ... Lemurs in turn disperse the seeds of their ...
(Date:11/3/2014)... , Nov. 3, 2014 Research and ... "Cell Therapy - Technologies, Markets and Companies" to ... cell therapy technologies and methods, which have already started to ... stem cell transplantation is replacing the old fashioned bone marrow ... Cell therapy is bound to become a part of medical ...
Breaking Biology News(10 mins):Fast food marketing for children disproportionately affects certain communities 2Fast food marketing for children disproportionately affects certain communities 3Gardeners of Madagascar rainforest at risk 2Gardeners of Madagascar rainforest at risk 3Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3
... and breadth of coverage, applicability and usefulness of the ... (GBIF) has set a goal of making one billion ... portal by December 2008., GBIF calls on holders of ... sharing their data to deepen and broaden biodiversity data ...
... another layer of competition to the mating game, scientists ... of female mammals can sense the presence of sperm ... This may be the molecular mechanism behind post-copulatory sexual ... partners play a role in determining which sperm fertilizes ...
... conservationists in Manchester are turning to physics to investigate ... American tree frogs. In a unique collaborative project, ... University of Manchester have joined forces with The Manchester ... frogs. Physicist Dr Mark Dickinson, working with Andrew ...
Cached Biology News:GBIF sets goal of mobilizing 1 billion records by end of 2008 2New evidence for female control in reproduction 2New evidence for female control in reproduction 3Sunbathing tree frogs' future under a cloud 2
(Date:11/18/2014)... , Nov. 18, 2014  Novira Therapeutics, Inc., ... curative treatment of chronic hepatitis B virus (HBV) infection, ... was appointed to its Scientific Advisory Board (SAB).  ... our SAB," said Christian S. Schade , Chief ... clinical development experience which will be invaluable to Novira ...
(Date:11/15/2014)... November 13, 2014 Collaborative Consulting, a ... were named one of the Boston Globe’s “Top Places ... Sized Businesses in Massachusetts to receive the honor. , ... who take care of their most valuable resource: the ... presented annually, and are based on an array of ...
(Date:11/15/2014)... Phoenix, AZ (PRWEB) November 14, 2014 ... the DNA analysis market has already proven itself as ... consumer usage. DNA Spectrum recognizes this opportunity with its ... provides customers with a comprehensive genealogical history for a ... myDNA Safe storage service and forthcoming ...
(Date:11/15/2014)... LONDON , Nov. 14, 2014 Algenol Biofuels ... 6th at the Oceanographic Museum of Monaco ... CleanEquity Monaco is an annual invitation-only event hosted by ... investment bank. Other partners and sponsors include ... Foundation, Covington & Burling, Cranfield University, PR Newswire, the Monte-Carlo ...
Breaking Biology Technology:Novira Therapeutics Announces Appointment of Brian F. Daniels, M.D., to its Scientific Advisory Board 2Novira Therapeutics Announces Appointment of Brian F. Daniels, M.D., to its Scientific Advisory Board 3Collaborative Consulting Honored with Boston Globe Top Places to Work 2014 2DNA Spectrum Begins the Search For a New Chief Executive Officer 2DNA Spectrum Begins the Search For a New Chief Executive Officer 3Algenol Biofuels Selected to Present at CleanEquity Monaco 2015 2
... HGS reacquires GSK rights to TRAIL receptor antibodies in return for ... reduction in Syncria(R) royalties - ... development program expands -, ROCKVILLE, Md., April 16 Human Genome,Sciences, ... the TRAIL receptor antibodies HGS-ETR1 (mapatumumab) and HGS-ETR2,(lexatumumab) from GlaxoSmithKline (GSK), in ...
... April 16 Masimo (Nasdaq:,MASI), the inventor ... announced an,agreement with Atom Medical Corporation, a ... to integrate Masimo Rainbow SET Pulse,CO-Oximetry into ... "Since standardizing on Masimo technology more than ...
... On Wednesday, April,23, 2008, GlaxoSmithKline plc will announce ... ended March 31, 2008. The announcement is,scheduled to ... approximately 7:00,am (ET) US and will be available ... Following the announcement, JP Garnier, Chief Executive Officer ...
Cached Biology Technology:Human Genome Sciences Advances Oncology Portfolio 2Human Genome Sciences Advances Oncology Portfolio 3Human Genome Sciences Advances Oncology Portfolio 4Human Genome Sciences Advances Oncology Portfolio 5Human Genome Sciences Advances Oncology Portfolio 6Atom Medical Adopts Masimo Rainbow SET Technology 2Atom Medical Adopts Masimo Rainbow SET Technology 3Atom Medical Adopts Masimo Rainbow SET Technology 4
Human Cystatin A MAb (Clone 224705)...
...
Microlite 2+ Plate, round bottom; an irradiated, high binding surface with enhanced dynamic range, extra high reflectivity and minimal cross talk for low signal luminescent reactions....
... temperature freezers offer a superior sample ... biological samples with high capacities. Innovative ... doors ensure excellent warming protection and ... oriented accessories simplify tracking of sample ...
Biology Products: