Navigation Links
Glacier-fed river systems threatened by climate change
Date:3/16/2012

Glacial meltwater increases biodiversity in mountainous freshwater ecosystems. As glaciers vanish due to global warming, so will those species dependent upon the icy runoff. This is the conclusion of a study authored by researchers from, among other institutions, the University of Copenhagen.

The article "Glacial river biodiversity" with the alarming new findings can be found in the journal Nature Climate Change.

"The knowledge is new and startling. Glacial runoff is cold, nutrient-poor and physically unstable, and therefore, typically species-poor. Traditionally, we have not attached great significance to these ecosystems within the context of local or regional biodiversity," states Associate Professor Dean Jacobsen of the Freshwater Biology Section at the University of Copenhagen's Department of Biology. Jacobsen is one of the study's authors.

Jacobsen and his European colleagues are the first to research ecology and mountain macroinvertebrates, primarily insect larvae found in tropical glacial streams. In the recent study, researchers compiled and analysed data from analogous regions located on three continents and predicted the consequences of the global retreat and disappearance of glaciers.

One-third of species threatened

The research results clearly demonstrate that the greatest number of freshwater macroinvertebrates are encountered in mountain streams where glacial runoff contributes to the streams' total volume of water. The study also finds that if glaciers were to vanish entirely, we could expect to lose between 11 and 38 percent of a region's total macroinvertebrate species. The expected losses would be particularly high for species, which have adapted to the unique and otherwise challenging living conditions of glacial streams.

Jacobsen emphasises, "That species of insects such as chironomids (non-biting midges), crane flies and stoneflies could disappear. The wiping out of these invertebrates and others would be much more extensive than once supposed and with unknown consequences for the functioning of the ecosystem."

Glacier-fed streams are one of several stream types which together create a mosaic of ecosystems. Each system has its own environmental characteristics anf unique living conditions.


'/>"/>

Contact: Dean Jacobsen
djacobsen@bio.ku.dk
(45) 26-82-14-77
University of Copenhagen
Source:Eurekalert

Related biology news :

1. Seismic zones, river deltas, landslides, fossil reptiles, and more new Geology science
2. Fair to bring future scientists and engineers to UC Riverside
3. University of Houston wins NASA grant to study Congo River Basin
4. UC Riverside bug expert visits Rwanda to solve mystery surrounding specialty coffee sector
5. UC Riverside scientists release natural enemy of Asian citrus psyllid
6. 4 UC Riverside researchers receive national recognition
7. Columbia River salmon are adapting to climate change
8. Great Plains river basins threatened by pumping of aquifers
9. Key driver of metastasis identified
10. Clemsons Intelligent River technology to provide real-time monitoring of river
11. US rivers and streams saturated with carbon
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/28/2016)... 2016 Synaptics (NASDAQ: SYNA ), a leading developer ... quarter ended December 31, 2015. --> ... 2016 increased 2 percent compared to the comparable quarter last year ... 2016 was $35.0 million, or $0.93 per diluted share. ... the first quarter of fiscal 2016 grew 9 percent over the ...
(Date:1/22/2016)... , Jan. 22, 2016 ... addition of the "Global Biometrics Market ... their offering. --> http://www.researchandmarkets.com/research/p74whf/global_biometrics ... "Global Biometrics Market in Retail Sector ... --> Research and Markets ( ...
(Date:1/18/2016)... , Jan. 18, 2016  Extenua Inc., ... that simplifies the use and access of ubiquitous ... go-to-market partnership with American Cyber.  ... extensive experience leading transformational C4ISR and Cyber initiatives ... integrating the latest proven technology solutions," said ...
Breaking Biology News(10 mins):
(Date:2/10/2016)... ... February 10, 2016 , ... Curoverse announced today that the ... provides capabilities for managing and processing genomic and health data at petabyte scale. ... collecting and analyzing genomic data,” said Adam Berrey chief executive officer at Curoverse. ...
(Date:2/10/2016)... Vancouver, BC (PRWEB) , ... February 09, 2016 ... ... and design services and current winner of the Highest Overall Customer Rating ... certification in all of its business units across the USA, Canada, Mexico and ...
(Date:2/9/2016)... ... ... Date and time: March 1, 2016, 5:30 p.m. to ... of Bucks County, 3805 Old Easton Road, Doylestown, PA 18902. , The Baruch ... house for participants to learn about a new Master of Biomedical Science (MBS) ...
(Date:2/9/2016)... ... , ... Tunnell Consulting, Inc. announced that Frédéric Lefebvre has joined the firm ... new accounts and work closely with existing Tunnell clients throughout Europe to ensure their ... clients more than 15 years of experience in the pharmaceutical industry, a thorough knowledge ...
Breaking Biology Technology: