HOME >> BIOLOGY >> NEWS
Coral death results from bacteria fed by algae

(Santa Barbara, Calif.) Bacteria and algae are combining to kill coral and human activities are compounding the problem.

Scientists have discovered an indirect microbial mechanism whereby bacteria kill coral with the help of algae. Human activities are contributing to the growth of algae on coral reefs, setting the stage for the long-term continued decline of coral.

Reporting in the June 5 on-line version of the scientific journal Ecology Letters, scientists described laboratory experiments on coral and algae.

First author Jennifer Smith, a postdoctoral fellow at the National Center for Ecological Analysis and Synthesis (NCEAS) at the University of California, Santa Barbara, explained that the team of scientists, as part of a research expedition to the Line Islands, put algae and coral in chambers of seawater with filters between them. All of the corals with neighboring algae died, while coral without neighboring algae did not die. However, with the addition of an antibiotic, coral death even in the presence of algae was prevented, showing that bacteria fed by the algae are the agents of coral death. "We are the first to link these processes together," said Smith.

"This study tightly links the fields of microbiology with coral reef ecology to help guide reef conservation efforts," said senior author Forest Rohwer, assistant professor of microbiology at San Diego State University.

"Our study shows that bacteria are the front line that kill corals," Smith explained. "Algae release sugar, fueling bacterial growth on the corals. These bacteria suffocate the coral by cutting off the supply of oxygen. Once the corals die, this frees more space for more algae to grow. We think this process sets up a positive feedback loop that accelerates the rate of decline in already damaged reef ecosystems."

The report describes the other conditions that put coral reefs at risk. Overfishing reduces the number of fish that graze
'"/>

Contact: Gail Gallessich
gail.g@ia.ucsb.edu
805-893-7220
University of California - Santa Barbara
12-Jun-2006


Page: 1 2 3

Related biology news :

1. Corals -- More complex than you?
2. Corals that can fight global warming may one day help fragile reefs
3. Geological Approaches to Coral Reef Ecology
4. Coral stress like never in history
5. Coral reef conservation by means of the global network of Marine Protected Areas
6. Corals switch skeleton material as seawater changes
7. Coral reef resilience: Better feeders survive bleaching
8. Coral reef fish larvae settle close to home
9. Pollution causes 40 percent of deaths worldwide, study finds
10. Inflammation may cause preterm labor and fetal deaths
11. Bacteria may not hasten death

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/22/2017)... 21, 2017 Optimove , provider ... retailers such as 1-800-Flowers and AdoreMe, today announced ... and Replenishment. Using Optimove,s machine learning algorithms, these ... and replenishment recommendations to their customers based not ... of customer intent drawn from a complex web ...
(Date:3/20/2017)... At this year,s CeBIT Chancellor Dr. Angela ... The Chancellor came to the DERMALOG stand together with the Japanese Prime ... partner country. At the largest German biometrics company the two government leaders ... iris recognition as well as DERMALOGĀ“s multi-biometrics system.   ... ...
(Date:3/16/2017)... Germany , March 16, 2017 CeBIT 2017 - Against identity ... Continue Reading ... Used combined in one project, multi-biometric solutions provide ... Used ... Systems) ...
Breaking Biology News(10 mins):
(Date:3/29/2017)... , March 29, 2017  Applied ... applying mechanistic modeling to drug research and ... collaboration with Zymeworks Inc. for quantitative systems ... therapeutics intended for the treatment of cancer. ... Zymeworks previously for GLP toxicology studies and ...
(Date:3/29/2017)... ... March 29, 2017 , ... Cancer diagnostics ... in booth 513 at the Association of Community Cancer Centers (ACCC) 43rd Annual ... , CANCERSCAPE unites key stakeholders from leading national organizations to share insights ...
(Date:3/29/2017)... MO , March 29, 2017 /PRNewswire/ - The ... its partners Nordion, a business of Sterigenics International, and ... (LAR) has been submitted to the U.S. Nuclear Regulatory ... domestic U.S. production of molybdenum-99 (Mo-99). Once operational, production ... half of U.S. demand for Mo-99, which currently must ...
(Date:3/28/2017)... ... March 28, 2017 , ... ... the American Association for the Advancement of Science (AAAS), the world's largest ... ReadCube will enhance its high-impact scholarly collection across its cross-platform reference management ...
Breaking Biology Technology:
Cached News: