Navigation Links
Island biodiversity in danger of total submersion with climate change
Date:11/13/2013

Sea level rise caused by global warming can prove extremely destructive to island habitats, which hold about 20% of the world's biodiversity. Research by C. Bellard, C. Leclerc and F. Courchamp of the University of Paris Sud look at 3 possible scenarios, from optimistic to very pessimistic, to bring attention to the dangers in store for some of the richest biodiversity hotspots worldwide. The study was published in the open access journal Nature Conservation.

Despite climate change having received considerable attention in recent years, no global assessment of the consequences of sea rising is available for island ecosystems. Yet those are amongst the regions most vulnerable to potential sea level rise, which in their case would cause a direct reduction of habitat.

Several recent studies strongly suggest that sea levels will rise substantially until the end of the century, with estimates ranging from 0.5 m to 2.3 m increase. Worst case scenarios of ice sheet melting and sliding lead to estimates of sea-level rise of the worrying 4 to 6 m. Such increases could lead to the immersion of very large proportions of many islands with low elevation. In many cases, sea level rise may lead to their total submersion, wiping out completely self-contained ecosystems and their inhabitants .

The study uses the 1,269 islands from different areas that France harbored, out of which, New Caledonia and French Polynesia are found to be the most vulnerable to sea level rise. The French maritime domain is ranked as the second most important in the world, these islands in total holding a large proportion of the world's biodiversity. Research shows that 5% of the number of islands could be permanently inundated under an increase of sea level by 1 meter. This figure dramatically rises to 8% and 11%, in the more pessimistic scenarios, respectively, for 2 and 3 meters of sea level rise. Assuming that French islands are representative of worldwide islands, roughly 10,800 islands could be entirely lost in the 1 meter scenario, the most optimistic one.

For the New Caledonia hotspot, under the worst scenario, up to 6.8 % of the islands could be half submerged. Speaking in terms of biodiversity loss, this indicates endemic plant species that are already at risk of extinction will be the most vulnerable to sea level rise.

"Losses of insular habitats will thus be relatively important in the future, probably leading to a major impoverishment of insular biodiversity. Given the implications of these results, decision makers are required to define island conservation priorities that accounts for sea level rise following climate change."comments the lead author Dr. C. Bellard.


'/>"/>

Contact: Dr. C. Bellard
celine.bellard@u-psud.fr
33-666-813-571
Pensoft Publishers
Source:Eurekalert  

Related biology news :

1. Pacific islands may become refuge for corals in a warming climate, study finds
2. 24 new species of lizards discovered on Caribbean islands are close to extinction
3. Global warming refuge discovered near at-risk Pacific island nation of Kiribati
4. UF to establish Faroe Island research center with help of baseball star
5. Big-mouthed babies drove the evolution of giant island snakes
6. Rubbing boulders, fossil mammal teeth, barrier islands, and a change in volcanic behavior
7. Rhode Island Hospital: Adult entertainment workers likely to benefit from health care intervention
8. The amazing amphibians and reptiles of the Philippine island Luzon
9. Sri Lankan snake study reveals new species, rich biodiversity in island country
10. Sea level rise: Jeopardy for terrestrial biodiversity on islands
11. EU-funded study underlines importance of Congo Basin for global climate and biodiversity
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Island biodiversity in danger of total submersion with climate change
(Date:6/30/2017)... , June 30, 2017 Today, ... developer and supplier of face and eye tracking ... Featured Product provider program. "Artificial ... innovative way to monitor a driver,s attentiveness levels ... from being able to detect fatigue and prevent ...
(Date:5/16/2017)... May 16, 2017   Bridge Patient Portal ... and MD EMR Systems , an electronic ... for GE, have established a partnership to build ... and the GE Centricity™ products, including Centricity Practice ... These new integrations will allow healthcare ...
(Date:4/17/2017)... 2017 NXT-ID, Inc. (NASDAQ: NXTD ) ... of its 2016 Annual Report on Form 10-K on Thursday April ... ... in the Investor Relations section of the Company,s website at ... at http://www.sec.gov . 2016 Year Highlights: ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... DuPont Pioneer ... that they have entered into a multiyear collaboration to identify and characterize novel ... additional tools for gene editing across all applications. , Under the terms of ...
(Date:10/12/2017)... ... 2017 , ... BioMedGPS announces expanded coverage of SmartTRAK Business ... US Hemostats & Sealants. , SmartTRAK’s US Market for Hemostats and Sealants module ... and biologic sealants used in surgical applications. BioMedGPS estimates the market will grow ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... launched Rosalind™, the first-ever genomics analysis platform specifically designed for life science ... in honor of pioneering researcher Rosalind Franklin, who made a major contribution ...
(Date:10/11/2017)... , ... October 11, 2017 , ... ... gene in its endogenous context, enabling overexpression experiments and avoiding the use of ... small RNA guides is transformative for performing systematic gain-of-function studies. , This ...
Breaking Biology Technology: