Navigation Links
Great Lake's sinkholes host exotic ecosystems
Date:2/24/2009

WASHINGTONResearchers are exploring extreme conditions for life in a place not known for extremes.

As little as 20 meters (66 feet) below the surface of Lake Huron, the third largest of North America's Great Lakes, peculiar geological formationssinkholes made by water dissolving parts of an ancient underlying seabedharbor bizarre ecosystems where the fish typical of the huge freshwater lake are rarely to be seen. Instead, brilliant purple mats of cyanobacteriacousins of microbes found at the bottoms of permanently ice-covered lakes in Antarcticaand pallid, floating pony-tails of other microbial life thrive in the dense, salty water that's hostile to most familiar, larger forms of life because it lacks oxygen.

Groundwater from beneath Lake Huron is dissolving minerals from the defunct seabed and carrying them into the lake to form these exotic, extreme environments, says Bopaiah A. Biddanda of Grand Valley State University, in Muskegon, Mich., one of the leaders of a scientific team studying the sinkhole ecosystems. Those ecosystems are in a class not only with Antarctic lakes, but also with deep-sea, hydrothermal vents and cold seeps.

"You have this pristine fresh water lake that has what amounts to materials from 400 million years ago being pushed out into the lake," says team co-leader Steven A. Ruberg of the Great Lakes Environmental Research Laboratory of the National Oceanic and Atmospheric Administration (NOAA).

The researchers describe this little-known underwater habitat and their ongoing investigations of it in the current issue of Eos, the newspaper of the Earth and Space Sciences, published weekly by the American Geophysical Union (AGU). AGU is the world's largest organization of Earth and space scientists.

The scientists report that some deep sinkholes act as catch basins for dead and decaying plant and animal matter and collect a soft black sludge of sediment topped by a bacterial film. In the
'/>"/>

Contact: Peter Weiss
pweiss@agu.org
202-777-7507
American Geophysical Union
Source:Eurekalert

Page: 1 2

Related biology news :

1. Lower increases in global temps could lead to greater impacts than previously thought, study finds
2. Genetic differences between yeasts greater than those between humans and chimpanzees
3. Ancestral genome of present-day African great apes & humans had burst of DNA sequence duplication
4. Over 1,000 species discovered in the Greater Mekong in past decade
5. Effects of climate change vary greatly across plant families
6. Study of polar dinosaur migration questions whether dinosaurs were truly the first great migrators
7. Waterborne disease risk upped in Great Lakes
8. Great bustards to be released on Salisbury Plain
9. New technique sees into tissue at greater depth, resolution
10. Diversity among parasitic wasps is even greater than suspected
11. Great Ape Trust graduate students paper sheds light on bonobo language
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/29/2014)... known about what genetic changes transform wild animals into ... whom is a University of Montana assistant professor, has ... development of the brain and the nervous system were ... Aug. 28 in Science and gives answers ... http://www.sciencemag.org/ ., The domestication of animals and plants, a ...
(Date:8/29/2014)... from the University of Texas Medical Branch at Galveston has ... antibodies can completely protect monkeys against a lethal dose of ... time when the disease is severe. , Thomas Geisbert, professor ... Nature discussing advances in Ebola treatment research. The filoviruses ... most deadly of pathogens, with fatality rates of up to ...
(Date:8/29/2014)... understand how the repeated climatic shifts over the ... of genetic diversity, a team of researchers led ... Ana Carnaval developed a new biodiversity metric called ... which the genetic variation within species is restricted ... professor of biology, and 14 other researchers from ...
Breaking Biology News(10 mins):New research reveals how wild rabbits were genetically transformed into tame rabbits 2New research reveals how wild rabbits were genetically transformed into tame rabbits 3Leading Ebola researcher at UTMB says there's an effective treatment for Ebola 2CCNY team defines new biodiversity metric 2
... loss of sensitive species in streams begins to occur at ... study by the USGS. The study found that streams are ... not to think of waterways as fragile organisms, and yet ... appear to be telling us," said USGS Director Marcia McNutt. ...
... French . Low levels of omega-3 may ... Gabriel Shapiro of the University of Montreal and the Research ... at the highest risk of depression during their childbearing years, ... episode in vulnerable women. Postpartum depression is associated with diminished ...
... Technology (NIST) have provided evidence in the laboratory that ... from damage by oxidation. In nature, oxidation is a ... electrons from DNA and may increase the chance for ... if the in vitro protective effect of nanotubes reported ...
Cached Biology News:Streams show signs of degradation at earliest stages of urban development 2NIST study suggests carbon nanotubes may protect DNA from oxidation 2
(Date:8/29/2014)... DIEGO, Aug. 29, 2014  Pfenex Inc. (NYSE ... the development of high-value and difficult to manufacture ... update and reported financial results for the second ... the successful completion of our initial public offering, ... our biosimilar product candidates, derived from our proprietary ...
(Date:8/29/2014)... one of the most promising technologies for future quantum ... (photons) instead of electrons. First, it is necessary to ... and control their direction. Researchers around the world have ... but now scientists at the Niels Bohr Institute have ... one at a time and in a particular direction. ...
(Date:8/29/2014)... York (PRWEB) August 29, 2014 ... at $5.6 billion in 2019. It is expected ... 2013 to 2019, and was valued at $1.8 ... published by Transparency Market Research. , For more ... http://www.transparencymarketresearch.com/companion-diagnostics-market.html . , The research report, titled ...
(Date:8/29/2014)... According to a new market report published by ... was valued at USD 3,754.6 million in 2012 and is ... a CAGR of 5.9% from 2013 to 2019. , Nearly ... afflicted by bone and joint disorders, and this number is ... and will continue to increase the demand for orthobiologics. Other ...
Breaking Biology Technology:Pfenex Reports Second Quarter 2014 Results and Provides Business Update 2Pfenex Reports Second Quarter 2014 Results and Provides Business Update 3Pfenex Reports Second Quarter 2014 Results and Provides Business Update 4Pfenex Reports Second Quarter 2014 Results and Provides Business Update 5Pfenex Reports Second Quarter 2014 Results and Provides Business Update 6Pfenex Reports Second Quarter 2014 Results and Provides Business Update 7Pfenex Reports Second Quarter 2014 Results and Provides Business Update 8Breakthrough in light sources for new quantum technology 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3Global Orthobiologics Market to Reach $5,519.9 Million by 2019: Transparency Market Research 2Global Orthobiologics Market to Reach $5,519.9 Million by 2019: Transparency Market Research 3
... for Incentive Program, RALEIGH, N.C., Aug. 16 ... Research Triangle Area (RTA) who provide top-quality care,will ... Health Care,Collaborative, a group of forward-thinking local employers, ... an initiative,known as the Bridges to Excellence (BTE) ...
... Aug. 16 Anesiva,Inc. (Nasdaq: ANSV ) ... program before the markets open tomorrow. A,conference call ... a.m. Eastern Time,tomorrow to discuss the announcement. ... webcast by dialing,800-340-6289 (international dial: 706-634-1538) or by ...
... Indevus,Pharmaceuticals, Inc. (Nasdaq: IDEV ) today announced ... U.S. Food and Drug Administration (FDA) for,VALSTAR(R). VALSTAR, ... the only product approved by the FDA for ... of the,urinary bladder. VALSTAR was removed from ...
Cached Biology Technology:Research Triangle Area Health Care Collaborative Launches Bridges to Excellence(R) Initiative to Improve Quality and Lower Costs 2Research Triangle Area Health Care Collaborative Launches Bridges to Excellence(R) Initiative to Improve Quality and Lower Costs 3Research Triangle Area Health Care Collaborative Launches Bridges to Excellence(R) Initiative to Improve Quality and Lower Costs 4Anesiva to Host Conference Call and Webcast Tomorrow to Discuss Encouraging Development in Zingo(TM) Program 2Indevus Receives Approvable Letter From FDA for VALSTAR(R) for Bladder Cancer Therapy 2Indevus Receives Approvable Letter From FDA for VALSTAR(R) for Bladder Cancer Therapy 3Indevus Receives Approvable Letter From FDA for VALSTAR(R) for Bladder Cancer Therapy 4
... consumable measurement plate for QPatch. ... controlled measurement sites. Each measurement ... flow channel system that enables ... and compound applications necessary for ...
... is a compact and self-contained multichannel ... a unique flow-through device, which allows ... wash system. Optional refill system ... Will be upgradable to with ...
This kit is designed to select cells labeled with phycoerythrin- (PE-) conjugated antibodies. Kit includes reagents for labeling 3 x 10 9 cells and EasySep magnet....
... iLink makes it easy to supply microplates, ... Developed with operator convenience in mind, iLink ... ease of use. The iLink software is ... assays or sub-assays, that can be copied ...
Biology Products: