Navigation Links
When bivalves ruled the world
Date:8/31/2007

Before the worst mass extinction of life in Earths history 252 million years ago ocean life was diverse and clam-like organisms called brachiopods dominated. After the calamity, when little else existed, a different kind of clam-like organism, called a bivalve, took over.

What can the separate fates of these two invertebrates tell scientists about surviving an extinction event"

A lot, says UWM paleoecologist Margaret Fraiser. Her research into this particular issue not only answers the question; it also supports a relatively new theory for the cause of the massive extinctions that occurred as the Permian period ended and the Triassic period began: toxic oceans created by too much atmospheric carbon dioxide (C02).

The theory is important because it could help scientists predict what would happen in the oceans during a modern C02 event. And it could give them an idea of what recovery time would be.

Studying the recovering ecology is equally significant, says Fraiser. The evolution of surviving species in the aftermath of the mass extinction set the stage for dinosaurs to evolve later in the Triassic.

From air to water Fossil records suggest that trauma in the oceans actually began in the air.

Estimates of the C02 in the atmosphere then were between six and 10 times greater than they are today, says Fraiser, an assistant professor of geosciences. It makes sense, she says. The largest continuous volcanic eruption on Earth known as the Siberian Traps had been pumping out C02 for about a million years prior to the Permian-Triassic mass extinction.

The Permian-Triassic extinction wiped out 70 percent of life on land and close to 95 percent in the ocean nearly everything except for bivalves and a fewer number of gastropods (snails).

C02 is a greenhouse gas that influences global temperatures. But, says Fraiser, according to the fossil record, high levels of C02 and the correspondingly
'/>"/>

Contact: Margaret Fraiser
mfraiser@uwm.edu
414-229-3827
University of Wisconsin - Milwaukee
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Edible bivalves as a source of human pathogens: signals between vibrios and the bivalve host.
2. Ancient ape ruled out of mans ancestral line
3. RNA project to create language for scientists worldwide
4. Worlds largest rainforest drying experiment completes first phase
5. PCRM develops worlds first cruelty-free insulin assay
6. Harnessing microbes, one by one, to build a better nanoworld
7. World-first Living Donor Islet Cell Transplant A Success; Procedure Offers Promise For Diabetics
8. New Estimates For The Causes Of Child Deaths Worldwide
9. Scientists journey to southern Africa to unravel the secret world of elephant communication
10. New World founders small in number
11. OneWorld Health drug receives Orphan designation from U.S. and European regulatory agencies
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/29/2014)... Davis have made some surprising discoveries about the ... immunodeficiency virus (SIV), the team found that specialized ... early responders to viral invasion and are the ... called interleukin-1 beta (IL-1β). , Though aimed ... of the gut epithelium that provides a barrier ...
(Date:8/29/2014)... (Aug. 29, 2014) Scientists at the Barshop Institute ... of Medicine at the UT Health Science Center at ... the tissues of the longest-lived rodent, the naked mole ... the cells of naked mole rats protects and alters ... damaged and obsolete proteins. , The factor also protects ...
(Date:8/29/2014)... about what genetic changes transform wild animals into domesticated ... is a University of Montana assistant professor, has made ... of the brain and the nervous system were particularly ... 28 in Science and gives answers to ... ., The domestication of animals and plants, a prerequisite ...
Breaking Biology News(10 mins):The early cost of HIV 2Factor in naked mole rat's cells enhances protein integrity 2New research reveals how wild rabbits were genetically transformed into tame rabbits 2New research reveals how wild rabbits were genetically transformed into tame rabbits 3
... NY, September 4, 2012The use of RNA in nanotechnology ... development of new therapeutic compounds. Key technical challenges remain, ... use of RNA molecules in nanotechnology approaches are presented ... , a peer-reviewed journal from Mary Ann Liebert, ...
... appliances in Spain are processed out of the Integrated ... of Salamanca exposes how many manufacturers are not registered ... According to the European directive on waste electrical ... the waste they generate during their activity until reaching ...
... fungal species, called , Hebelomagriseopruinatum , has now officially ... whose name can be translated into ,the grey-dewy tear ... mushroom-hunting tour headed by postdoc Jacob Heilman-Clausen from the ... 2009, postdoc Jacob Heilman-Clausen from the Center for Macroecology, ...
Cached Biology News:More than 70% of electronic waste management is uncontrolled 2More than 70% of electronic waste management is uncontrolled 3New Danish fungal species discovered 2
(Date:8/29/2014)... SAN DIEGO, Aug. 29, 2014  Pfenex Inc. ... in the development of high-value and difficult to ... business update and reported financial results for the ... "With the successful completion of our initial public ... advance our biosimilar product candidates, derived from our ...
(Date:8/29/2014)... but one of the most promising technologies for future ... light (photons) instead of electrons. First, it is necessary ... photons and control their direction. Researchers around the world ... control, but now scientists at the Niels Bohr Institute ... emitted one at a time and in a particular ...
(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)... York (PRWEB) August 29, 2014 According to ... Orthobiologics Market” the global orthobiologics market was valued at USD ... market worth USD 5,519.9million in 2019at a CAGR of 5.9% ... aged 50 years and above is afflicted by bone and ... by the year 2020. This has and will continue to ...
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
... China, Jan. 31 /Xinhua-PRNewswire/ -- WuXi PharmaTech ... acquisition of AppTec Laboratory,Services, Inc., a US-based ... industries. AppTec offers testing, contract research and,development, ... highly,differentiated, fully integrated platform., (Logo: ...
... Pharmaceuticals,Inc. (Nasdaq: AMLN ) will be presenting at ... in New York on,Wednesday, February 6, 2008 at 1:00 ... Vice President, Finance and Chief Financial Officer of,Amylin Pharmaceuticals, ... presentation and breakout session will be webcast, and a,recording ...
... International,Inc. (Nasdaq: CHDX ) a leading independent ... the People,s Republic of China,announced that it intends ... ended December 31, 2007, on Friday, February 8, ... conference call on Friday,February 8, 2008 at 10:00 ...
Cached Biology Technology:WuXi PharmaTech Completes Acquisition of AppTec 2Chindex International Announces Conference Call to Discuss Its Fiscal 2008 Third Quarter Results on Friday, February 8, 2008 2Chindex International Announces Conference Call to Discuss Its Fiscal 2008 Third Quarter Results on Friday, February 8, 2008 3
Request Info...
...
Request Info...
Agarose-LE, 500 g. Suitable for soft agarose cloning. Nuclease-free.Gel point (1.5%): 36 1.5 C, EEO (-mr): 1200 g/cm2. Category: Nucleotides & Enzymes & Biochemicals, Ultrapure Biochemicals ....
Biology Products: