Navigation Links
Disappearing glaciers enhanced biodiversity
Date:10/4/2010

Biodiversity decreases towards the poles almost everywhere in the world, except along the South American Pacific coast. Investigating fossil clams and snails Steffen Kiel and Sven Nielsen at the Christian-Albrechts-Universitt zu Kiel (CAU) could show that this unusual pattern originated at the end of the last ice age, 20.000 to 100.000 years ago. The retreating glaciers created a mosaic landscape of countless islands, bays and fiords in which new species developed rapidly geologically speaking. The ancestors of the species survived the ice age in the warmer Chilean north.

The exceptional biodiversity of the southern Chilean coast is known for a long time. More than 500 species of clams and snails are known from this area, twice as many as at comparable latitudes in the northern hemisphere. The reasons for this diversity were so far speculative, report Kiel and Nielsen in the current issue of the scientific journal Geology: "Opinions include that southern Chile is a museum of diversity where species survived for millions of years in addition to new arrivals; or that Antarctic species colonized this area from the south." Their analysis of around 35.000 fossil clams and snails, belonging to about 400 species, allowed the paleontologists to draw some more precise conclusions: "Our fossils reject both hypotheses. Biodiversity in this area always decreased toward the south in the geologic past, and we didn't find any intruders from Antarctica", explains Steffen Kiel. In addition, the researchers found that the vast majority of species and genera that lived in that area only 16 million years ago had become extinct. "This area is certainly not a museum of biodiversity", adds Kiel.

The most species-rich groups of animals in the southern Chilean fiordlands are those inhabiting rocky shores. This is exactly the habitat that was created when the glacier retreated from their marine termini. "Molecular biologic investigations on phylogenetic relatio
'/>"/>

Contact: Dr. Sven Nielsen
nielsen@gpi.uni-kiel.de
49-431-880-2862
Kiel University
Source:Eurekalert

Page: 1 2

Related biology news :

1. New research on rapidly disappearing ancient plant offers hope for species recovery
2. New research on rapidly-disappearing ancient plant offers hope for species recovery
3. Disappearing ducks?
4. Disappearing act of worlds second largest fish explained
5. Ancient Hawaiian glaciers reveal clues to global climate impacts
6. Black carbon a significant factor in melting of Himalayan glaciers
7. Shrinking Bylot Island glaciers tell story of climate change
8. Zymes LLCs Omega-3 Enhanced Water OmegaChill to be Distributed at NFL Alumni Super Bowl XLIV Weekend Events on February 5-7th, 2010
9. Quality and safety of infant formulas, functional foods enhanced by new standards
10. REGiMMUNE presents enhanced efficacy data in preclinical transplantation models
11. Early isolation linked to enhanced response to cocaine
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/18/2014)... world population predicted to reach 9 billion by ... that considers human-altered landscapes such as farmland, according ... habitat that supports it might be an increasingly ... three-quarters of the land surface is directly affected ... human-caused impacts such as climate change. But what ...
(Date:4/18/2014)... adds a twist to the story of how barnyard chickens ... 21 in the journal Proceedings of the National Academy ... chickens that lived 200-2300 years ago in Europe, researchers report ... have looked far different from the chickens we know today. ... associate with modern domestic chickens -- such as their yellowish ...
(Date:4/18/2014)... comet impacts can cause widespread ecological havoc, killing off ... But new research from Brown University shows that impacts ... the time of an impact. , A research team ... of leaves and preserved organic compounds lodged inside glass ... material could provide a snapshot of environmental conditions at ...
Breaking Biology News(10 mins):Stanford researchers rethink 'natural' habitat for wildlife 2Stanford researchers rethink 'natural' habitat for wildlife 3Stanford researchers rethink 'natural' habitat for wildlife 4Ancient DNA offers clues to how barnyard chickens came to be 2Impact glass stores biodata for millions of years 2Impact glass stores biodata for millions of years 3
... to DNA and then cut these "DNA wires" into ... for future computers. , Findings are detailed in a ... the American Chemical Society. The paper was written by ... an assistant professor of biomedical engineering and chemistry at ...
... Ed : Don't miss out the cool movies, link at ... School of Medicine researchers have found a way to exercise ... jump, beat their wings, and fly on command by triggering ... the insects' central nervous systems, according to a new report ...
... Southampton are continuing their pioneering research into diseases such as ... known as prions, thanks to a £300,000 grant from the ... deaths from confirmed or probable variant CJD (vCJD) in the ... by eating food contaminated with prions that is also responsible ...
Cached Biology News:Purdue researchers use enzyme to clip 'DNA wires' 2Purdue researchers use enzyme to clip 'DNA wires' 3Remote control flies? Fly behavior controlled by laser light 2Remote control flies? Fly behavior controlled by laser light 3
(Date:1/15/2014)... 15, 2014 TaiGen Biotechnology Company, Limited ("TaiGen") today ... R-Pharm, a leading Russian pharmaceutical company, to develop and ... Russian Federation , Turkey ... is a novel antibiotic for the treatment of bacterial ...
(Date:1/14/2014)... , Jan. 14, 2014 As pet owners drew up their ... of them wrote: "Take better care of my furry companion." Nowadays ... clothes and top-brand carrying cases to take the little canine or ... also feel compelled to buy some pricey toys at the pet ...
(Date:1/14/2014)... 14, 2014 In recent years, growing ... methods in product development and promotion has led to ... mistrust, fueled by concerns about the insidious impact of ... of spectacular fines to the world’s biggest pharmas for ...
(Date:1/14/2014)... 14, 2014 Kerr Corporation, a leading manufacturer ... additional how-to information about dual arch impressions on its dental ... Arch Impressions,” the blog entry serves up a list of ... a step-by-step demonstration by Dr. David Little as he crafts ...
Breaking Biology Technology:TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 2TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 4New Year's Resolution: Give Pets the Gift of Top-Notch Health Care 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 3
... RALEIGH, N.C., Dec. 11 Campbell Alliance, ... pharmaceutical and,biotechnology industries, today announced that Tony ... Distribution practice, will serve as conference,chairperson at ... EDI Data Management Conference. The event will ...
... Dec. 10 Tutogen Medical, Inc.,(Amex: TTG ), a ... and animal (xenograft) tissue, today announced,financial results for the fiscal ... of 2007 Highlights for the fiscal year include:, ... -- Sales of dental products increased 38% in fiscal ...
... Board: SCIE) announced today that Jim Dorst has joined ... Financial Officer., Jim Hitchin the Company,s CEO said, ... public medical device, manufacturing and software firms. His,experience goes ... a graduate,degree in accounting, he is well suited for ...
Cached Biology Technology:Campbell Alliance Trade and Distribution Practice to Chair CBI 3rd Annual Fee for Service and EDI Data Management Conference 2Tutogen Medical, Inc. Reports Year-End Fiscal 2007 Financial Results 2Tutogen Medical, Inc. Reports Year-End Fiscal 2007 Financial Results 3Tutogen Medical, Inc. Reports Year-End Fiscal 2007 Financial Results 4Tutogen Medical, Inc. Reports Year-End Fiscal 2007 Financial Results 5Tutogen Medical, Inc. Reports Year-End Fiscal 2007 Financial Results 6Tutogen Medical, Inc. Reports Year-End Fiscal 2007 Financial Results 7Tutogen Medical, Inc. Reports Year-End Fiscal 2007 Financial Results 8Tutogen Medical, Inc. Reports Year-End Fiscal 2007 Financial Results 9Tutogen Medical, Inc. Reports Year-End Fiscal 2007 Financial Results 10Jim Dorst Joins SpectraScience as CFO 2
Anti-GOSR2 Monoclonal AntibodyOther Sub-Family: not assigned-Other Applications: Immunocytochemistry, Immunoprecipitation, Western Blot...
... combines shaking and rocking for maximal fluid movement. ... mm stainless steel or acrylic platform, it is ... operation. The platform angle is easily adjusted from ... action and rotation speed of platform is adjusted ...
... The Experion HighSens analysis kit for ... required to perform high-sensitivity RNA analysis (at ... system. This kit includes 25 RNA HighSens ... gel, 2 x 20 microliters RNA HighSens ...
... kit provides all the accessories necessary for ... conformation polymorphism analysis (SSCP) with the DCode ... a cooling finger adaptor for use with ... of 20 cm plates, 2 sets of ...
Biology Products: