Navigation Links
New mathematical model helps biologists understand how coral dies in warming waters
Date:3/29/2010

ITHACA - Cornell University researchers have found a new tool to help marine biologists better grasp the processes under the sea: They have created mathematical models to unveil the bacterial community dynamics behind afflictions that bleach and kill coral. (Public Library of Science Biology, March 30, 2010.)

Warming waters are triggering coral bleaching and disease in the Caribbean, Indian Ocean and Great Barrier Reef off the Australian coast. Now new mathematical models explain for the first time how beneficial bacteria on coral suddenly give way to pathogens when waters warm.

"Before this study, we just had observations but little understanding of the mechanism" for what causes coral disease and bleaching, said Laura Jones, Cornell senior research associate in ecology and evolutionary biology. Justin Mao-Jones '08, conducted the research as an undergraduate in the School of Operations Research and Information Engineering, is the paper's lead author.

The model reveals how a healthy normal microbial community in the coral surface mucus layer protects corals from disease by preventing invasion and overgrowth by pathogenic bacteria. But when corals are stressed, for example by elevated temperatures (a heat spell), the community of microbes suddenly switches. Species associated with a healthy coral organism "resident species" - decline as pathogens associated with coral disease take their place.

The researchers used models to simulate bacterial community dynamics within the surface coral mucus, under normal conditions, and under the warming conditions that lead to a sudden shift from beneficial bacteria to pathogens on the coral's surface.

"There's a critical threshold where the system jumps to a pathogen-dominated state," said Jones.

They also found that the models replicated a pattern others have observed: once the disease-causing microbes establish themselves, they persist even if the water cools down enough to favor the beneficial bacteria. The coral is then often too damaged to recover, and the reefs begin to die.

Preventing oceans from warming will require people to curb climate change, and may be unavoidable in the short term, said Jones. But reducing poor water quality, which stresses the coral and makes the oceans more hospitable to pathogens, could perhaps ward off the sudden shift to pathogens dominating the coral surface, she added.


'/>"/>

Contact: Blaine Friedlander
bpf2@cornell.edu
607-254-8093
Cornell University
Source:Eurekalert

Related biology news :

1. Mathematical keys to a sixth sense -- the lateral-line system
2. Tumor growth and chemo response may be predicted by mathematical model
3. Image processing and mathematical morphology in new text by NJIT professor
4. Image processing and mathematical morphology in new text by NJIT prof
5. Researchers create mathematical model of fruit fly eyes
6. Computational mathematical sciences receives NSF grant for undergraduate research
7. GENETICS 2010: Model Organisms to Human Biology Meeting
8. Stem cells used to model infant birth defect
9. Caltech and UCSD scientists establish leech as model for study of reproductive behavior
10. Model may offer better understanding of embryonic development
11. Cool model for a hot planet
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2016)... , Nov. 21, 2016   Neurotechnology ... object recognition technologies, today announced that the MegaMatcher ... cards was submitted for the NIST Minutiae ... passed all the mandatory steps of the evaluation ... is a continuing test of fingerprint templates used ...
(Date:11/16/2016)... CLARA, Calif. , Nov. 16, 2016 ... enhancing user experience and security for consumer electronics, ... for the financial and retail industry, today announced ... secure and convenient way to authenticate users of ... uses Sensory,s TrulySecure™ software which requires ...
(Date:11/14/2016)... Nov. 14, 2016  Based on its ... Frost & Sullivan recognizes FST Biometrics with ... for Visionary Innovation Leadership. FST Biometrics emerged ... identification market by pioneering In Motion Identification ... instant, seamless, and non-invasive verification. This patented ...
Breaking Biology News(10 mins):
(Date:12/9/2016)... York , December 9, 2016 ... that the top five players in the  Global Label-Free ... in the overall market in 2015. Players such as ... Elmer have remained dominant in the global market due ... to ensure product innovation. Product upgrades and timely product ...
(Date:12/9/2016)... , Dec. 9, 2016 China Cord Blood Corporation ... China,s leading provider of cord blood collection, ... services, today announced the results of its 2016 Annual General ... Kong S.A.R., China . ... ratified the re-appointment of KPMG Huazhen LLP as the independent ...
(Date:12/9/2016)... According to a new market research report ... Reagent Equipment), Application (Research, PCR, Gene, DNA, NGS, Diagnostic, RNAI), End ... the global market is expected to reach USD 2.20 Billion by ... 10.6% during the forecast period. Continue ... ...
(Date:12/8/2016)... -- This report analyzes the worldwide markets for Biostimulants in ... & Fulvic), Extract Based, and Others. The report also analyzes ... Turf, Row Crops, and Others. The report provides separate comprehensive ... Japan , Europe , ... and Rest of World. Annual estimates and forecasts are provided ...
Breaking Biology Technology: