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:6/23/2017)... and ITHACA, N.Y. , ... and Cornell University, a leader in dairy research, today ... bioinformatics designed to help reduce the chances that the ... the onset of this dairy project, Cornell University has ... for Sequencing the Food Supply Chain, a food safety ...
(Date:5/16/2017)... May 16, 2017  Veratad Technologies, LLC ( www.veratad.com ... age and identity verification solutions, announced today they will ... 2017, May 15 thru May 17, 2017, in ... International Trade Center. Identity impacts the ... in today,s quickly evolving digital world, defining identity is ...
(Date:4/24/2017)... 24, 2017 Janice Kephart , ... Identity Strategy Partners, LLP (IdSP) , today issues ... President Trump,s March 6, 2017 Executive Order: ... vetting can be instilled with greater confidence, enabling ... all refugee applications are suspended by until at ...
Breaking Biology News(10 mins):
(Date:8/16/2017)... and OXFORD, England , Aug. 16, ... consortium for biotech executive search and leadership development, and Virdis ... sectors, have created an exclusive alliance that enables clients to ... "For our clients here in the ... unparalleled access to a diverse population of leadership talent throughout ...
(Date:8/15/2017)... ... August 15, 2017 , ... ... largest Asian exhibitions for analytical and scientific instruments. This year’s symposium, organized by ... Approaches in Mass Spectrometry for Bioanalytical Applications.” This dynamic presentation will discuss novel ...
(Date:8/15/2017)... ... August 15, 2017 , ... Coffea arabica ... biotic and abiotic factors. During this educational webinar, participants will learn about the ... as gain a better understanding of how genomics is important for coffee breeding ...
(Date:8/14/2017)... ... August 14, 2017 , ... The Conference Forum ... which will take place on September 6, 2017 at the Marriott Copley Place in ... of Experimental Medicine, Informatics, and Regulatory Strategy, Pfizer Innovative Research Lab, Pfizer, who leads ...
Breaking Biology Technology: