Navigation Links
Safety in numbers? Not so for corals
Date:11/15/2013

Traditionally, it was assumed that corals do not face a risk of extinction unless they become very rare or have a very restricted range. A team of scientists from the University of Hawaii Manoa (UHM), Joint Institute for Marine and Atmospheric Research (JIMAR) and the National Oceanic and Atmospheric Administration (NOAA) has revealed that global changes in climate and ocean chemistry affect corals whether scare or abundant, and often it is the dominant, abundant corals with wide distributions that are affected the most.

The researchers evaluated both the geologic record of past extinctions and recent major events to assess the characteristics of dominant corals under various conditions. They determined that during periods advantageous to coral growth, natural selection favors corals with traits that make them more vulnerable to climate change.

The last 10 thousand years have been especially beneficial for corals. Acropora species, such as table coral, elkhorn coral and staghorn coral, were favored in competition due to their rapid growth. This advantageous rapid growth may have been attained in part by neglecting investment in few defenses against predation, hurricanes, or warm seawater. Acropora species have porous skeletons, extra thin tissue, and low concentrations of carbon and nitrogen in their tissues. The abundant corals have taken an easy road to living a rich and dominating life during the present interglacial period, but the payback comes when the climate becomes less hospitable.

Researchers from the UHM School of Ocean and Earth Science and Technology (SOEST); the National Marine Fisheries Service (Southeast Fisheries Science Center, Northwest Fisheries Science Center, and Pacific Islands Fisheries Science Center); NOAA National Ocean Service; and NOAA Coral Reef Watch propose that the conditions driven by excess carbon dioxide in the ocean cause mortality at rates that are independent of coral abundance. This density-independent mortality and physiological stress affects reproductive success and leads to the decline of corals. Some coral species are abundant across a broad geographic range, but the new findings show that this does not safeguard them against global threats, including changing ocean chemistry and rising temperatures.

Nearly all the assessments and evaluations of the risk of extinction for a species of coral are made on the basis of how scarce or restricted in range it is. However, the new findings highlight the vulnerability of abundant and widely dispersed corals as well as corals that are rare and/or have restricted ranges.

Moving forward, the authors hope to strengthen the case for directly addressing the global problems related to coral conservation. Though it is good to handle local problems, the authors stress, the handling of all the local problems will not be sufficient.


'/>"/>

Contact: Marcie Grabowski
mworkman@hawaii.edu
808-956-3151
University of Hawaii ‑ SOEST
Source:Eurekalert  

Related biology news :

1. UGA study finds theres not always safety in numbers when it comes to extinction risk
2. Sensitive test helps improve vaccine safety
3. NIH funds development of tissue chips to help predict drug safety
4. Jeff Crandall Honored With SAE International Arnold W. Siegel International Transportation Safety Award
5. INTEGRIS Health Puts Patient Safety in the Palm of Your Hand
6. Questions about biosafety? Ask a biosafety expert
7. Climate change impacts to US coasts threaten public health, safety and economy
8. Masked mold toxins in food should be included in safety regulations
9. Additional research must be done to ensure safety of pit latrines, new study says
10. Revolutionary Face Recognition Media Exploitation System Now Available to Enhance Public Safety in Europe
11. RNA-interference pesticides will need special safety testing
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Safety in numbers? Not so for corals
(Date:3/15/2016)... March 15, 2016 Yissum Research Development ... technology-transfer company of the Hebrew University, announced today the ... sensing technology of various human biological indicators. Neteera Technologies ... million from private investors. ... the detection of electromagnetic emissions from sweat ducts, enables ...
(Date:3/10/2016)... India , March 10, 2016 ... a new market research report "Identity and Access Management ... & Audit, Compliance, and Governance), by Organization Size, by ... to 2020", published by MarketsandMarkets, The market is estimated ... USD 12.78 Billion by 2020, at a Compound Annual ...
(Date:3/8/2016)... RALEIGH, N.C. , March 8, 2016 /PRNewswire/ ... biometric sensor technology, today announced it has secured ... led by GII Tech, a new venture fund ... LLC, with additional participation from existing investors TDF ... use the funds to continue its triple-digit growth ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... April 29, 2016 According ... Market Research "Separation Systems for Commercial Biotechnology Market ... and Forecast 2015 - 2023", the separation systems ... 10,665.5 Mn in 2014 and is projected to ... to 2023 to reach US$ 19,227.8 Mn in ...
(Date:4/28/2016)... 2016 The report "Cryocooler Market ... Service (Technical Support, Product Repairs & Refurbishment, Preventive Maintenance, ... to 2022", published by MarketsandMarkets, the global market is ... at a CAGR of 7.29% between 2016 and 2022. ... 94 Figures spread through 159 Pages and in-depth TOC ...
(Date:4/28/2016)... ... 28, 2016 , ... Morris Midwest ( http://www.morrismidwest.com ), a ... at its Maple Grove, Minnesota technical center, May 11-12. The event will ... Almost 20 leading suppliers of tooling, accessories, software and other related technology will ...
(Date:4/27/2016)... VANCOUVER, British Columbia , April 27, 2016 ... "Gesellschaft" oder "NanoStruck") (CSE: NSK) (OTCPink: NSKQB) ( ... sie im Anschluss an ihre Pressemitteilung vom 13. ... Inc. erhalten hat, ihre Finanzen um zusätzliche 200.000.000 ... auf 4.000.000 Kanadische Dollar zu bringen. Davon wurden ...
Breaking Biology Technology: