Navigation Links
Are nuisance jellyfish really taking over the world's oceans?
Date:2/1/2012

In recent years, media reports of jellyfish blooms and some scientific publications have fueled the idea that jellyfish and other gelatinous floating creatures are becoming more common and may dominate the seas in coming decades. The growing impacts of humans on the oceans, including overfishing and climate change, have been suggested as possible causes of this apparently alarming trend.

A careful evaluation of the evidence by Robert H. Condon of Dauphin Island Sea Lab and his 16 coauthors, however, finds the idea that jellyfish, comb jellies, salps, and similar organisms are surging globally to be lacking support. Rather, Condon and his colleagues suggest, the perception of an increase is the result of more scientific attention being paid to phenomena such as jellyfish blooms and media fascination with the topic. Also important is the lack of good information on their occurrence in the past, which encourages misleading comparisons. Condon and his coauthors describe their findings in the February issue of BioScience.

Such fossil and documentary evidence as is available indicates that occasional spectacular blooms of jellyfish are a normal part of such organisms' natural history, and may be linked to natural climate cycles. But blooms drew less attention in decades and centuries gone by.

Condon and his coauthors do not urge complacency, and acknowledge a lack of consensus among researchers. They point out that changes in populations of jellyfish and similar sea organisms do have important consequences for local marine ecology and could be affected by human activity. For that reason, they are assembling a comprehensive new database that will enable trends in the numbers of such creatures to be assessed and the links to human activity studied. But for now, Condon and his coauthors believe the case for jellyfish-dominated seas in coming decades is not proven.


'/>"/>

Contact: Tim Beardsley
tbeardsley@aibs.org
703-674-2500 x326
American Institute of Biological Sciences
Source:Eurekalert

Page: 1

Related biology news :

1. Pennycress could go from nuisance weed to new source of biofuel
2. Jellyfish blooms transfer food energy from fish to bacteria
3. Jellyfish blooms shunt food energy from fish to bacteria
4. Through unique eyes, box jellyfish look out to the world above the water
5. Voracious comb jellyfish invisible to prey
6. The jellyfish-like salp: Most efficient filter-feeder in the deep, scientists discover
7. Scientists unravel evolution of highly toxic box jellyfish
8. Jellyfish joyride a threat to the oceans
9. Fireflies and jellyfish help illuminate quest for cause of infertility
10. New online report on massive jellyfish swarms released
11. What really happened prior to Snowball Earth?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/16/2017)... 16, 2017 CeBIT 2017 - Against identity fraud with DERMALOG solutions ... ... Used combined in one project, multi-biometric solutions provide a crucial contribution against ... Used combined in one project, ... ...
(Date:3/9/2017)... Australia , March 9, 2017 ... the prestigious World Lung Imaging Workshop at the University ... , was invited to deliver the latest data to ... globally recognised event brings together leaders at the forefront ... developments in lung imaging. "The quality ...
(Date:3/7/2017)... , March 7, 2017 Brandwatch , the ... by The Prince,s Trust to uncover insights to support ... The Trust. The UK,s leading youth charity will be ... campaign results and get a better understanding of the topics and ... ...
Breaking Biology News(10 mins):
(Date:3/24/2017)... , March 24, 2017 On ... trading session at 5,817.69, down 0.07%; the Dow Jones ... and the S&P 500 closed at 2,345.96, marginally dropping ... sectors closed in green, 4 sectors finished in red, ... Friday, Stock-Callers.com has initiated reports coverage on the following ...
(Date:3/23/2017)... , Mar 23, 2017 Research ... Products: Global Markets" report to their offering. ... The Global ... $466.6 Billion in 2016 at a CAGR of 8.9%, ... energetic and non-energetic bioproducts into seven major product segments: bio-derived ...
(Date:3/23/2017)... ... March 23, 2017 , ... Ellen Matloff, president and ... Council (CTC) as a 2017 Women of Innovation® finalist. Matloff will be among ... Dinner. , The dinner recognizes women accomplished in science, technology, engineering and math ...
(Date:3/23/2017)... -- In today,s pre-market research, Stock-Callers.com takes ... industry: Sangamo Therapeutics Inc. (NASDAQ: SGMO), Eyegate Pharmaceuticals Inc. ... Regulus Therapeutics Inc. (NASDAQ: RGLS ). On ... rating on Pharmaceuticals/Biotechnology to "Overweight" from "Market Weight." Learn more about ... ...
Breaking Biology Technology: