HOME >> BIOLOGY >> NEWS
Coral layers good proxy for Atlantic climate cycles

Tree rings may tell how old a tree is, but the rings or annual bands in some skeletal coral may tell not only the age of the animal, but also something of the dynamics of the ocean in which it grew, according to Penn State and University of Miami researchers.

"Some coral grows like a tree; each year a complete layer with both a high and low-density skeletal calcium carbonate band is formed by the coral animal," says Dr. Lisa Greer, assistant professor of geosciences. "Not all corals create rings, but the massive corals like boulder star coral or pin cushion coral do."

Greer, and Dr. Peter Swart, professor at the Rosenstiel School of Marine and Atmospheric Science, University of Miami, looked at both modern and fossil corals to see if the calcium carbonate of the coral skeletons could shed light on the temperature and salinity of the tropical Atlantic Ocean.

"In contrast to research in the tropical Pacific, there have been few definitive studies utilizing proxy records within Atlantic coral skeletons to provide information on the climate dynamics in this region," Greer told attendees at the fall meeting of the American Geophysical Union today (Dec. 7) in San Francisco.

Information on the climate dynamics of the Atlantic is necessary as input to global and regional climate models. Not only are the current dynamic patterns important, but patterns from the past, which may differ from today, are important as well.

Greer uses a dental x-ray to locate the coral layers in a very thin slice taken from the core. In modern coral, she then counts down from the top to associate the layers with actual years. The sample she reported on was taken in 1994 and went back to 1935. Once the layers are located, Greer takes very small samples of the coral in a line running up the coral section. She averages about 22 samples per year covering the 59-year span.

Greer and Swart were investigating the relationship between non-radioactive or stable iso
'"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
7-Dec-2002


Page: 1 2 3

Related biology news :

1. Corals can reestablish symbiosis with algae from their environments after bleaching
2. Research: Coral reefs decline actually began centuries ago
3. Corals defy species classification
4. Coral smothering green tide seaweed spreading on Florida reefs
5. Coralreef fish desperately needs mangrove forests and seagrass fields
6. Corals are being robbed of light
7. Increasing Carbon Dioxide Threatens Tropical Coral Reefs
8. The Presidents Coral Reef Task Force Meets On March 5-6
9. Bleached Coral Could Be Environment Warning
10. USGS Measures Coral Reef Recovery In Culebra, Puerto Rico
11. Scientists Urge Further Study Of Alarming Coral Reef Decline

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


(Date:3/29/2019)... ... , ... In the wake of the success of IBBL’s ... biobanks was launched in July 2018, in an agreement between IBBL, the International ... Biotech Association (BBCMBA). The one-year pilot programme offered two testing schemes: ‘DNA quantification ...
(Date:3/27/2019)... ... March 27, 2019 , ... NDA Partners Chief Executive Officer ... Health & Pharma Biotechnology Award as the Best Life Sciences Management & Contract ... individuals and companies whose accomplishments have proved evidence of extensive expertise and skills, ...
(Date:3/25/2019)... , ... March 25, 2019 , ... ... Visikol, a contract research organisation focused on advancing drug discovery, have announced a ... imaging. , Tissue clearing methods, which are essential to get a better view ...
Breaking Biology News(10 mins):
(Date:4/12/2019)... ... April 12, 2019 , ... ... neurotechnology and will educate about innovative tools and devices being used to enhance ... for more information. , This segment of Advancements will focus on Sound for ...
(Date:4/9/2019)... , ... April 09, 2019 , ... The American ... members of the Society's leadership team, including a new addition to the presidential line ... of their peers to join the Society's leadership team for a three-year term (2019-2021). ...
(Date:4/4/2019)... ... , ... LeadingBiotech, an exclusive event series bringing biopharma CEOs ... CEO conference to be held May 28-29, 2019 at Boston’s Four Seasons Hotel. ... and discussions from past, present and future change-makers. , LeadingBiotech, formerly ...
(Date:3/23/2019)... ... 2019 , ... uBiome has awarded microbiome research support in ... Nnamdi Azikiwe University in Anambra State, Nigeria led by Dr. Kingsley C. Anukam, ... Medical Laboratory Sciences and Deputy Provost, College of Health Sciences. The study hopes ...
Breaking Biology Technology:
Cached News: