Navigation Links
Dinosaur-era climate change study suggests reasons for turtle disappearance
Date:3/14/2013

The dry, barren prairie around Alberta's Drumheller area was once a lush and subtropical forest on the shores of a large inland sea, with loads of wetlands inhabited by dinosaurs, turtles, crocodiles and small mammals.

But that changed about 71-million-years ago, according to a new study by researchers Annie Quinney and Darla Zelenitsky in paleontology at the University of Calgary. The researchers' calculations show that drastic climate change occurred during a five-million-year period in Alberta's badlands. At this time, the wetlands dried up and the warm humid climate was interrupted by a sudden cool, drying spell.

The study of ancient climate change is important as it helps researchers understand the impact sudden heating and cooling may have had on plants and animals.

"This was a time of change in Alberta, the wetlands disappeared as the inland sea retreated and the climate cooled," says Quinney, a former master's student in the Department of Geoscience. She led the study recently published in the journal Palaeogeography, Palaeoclimatology, Palaeoecology, which was part of her master's degree in the Department of Geoscience.

Dramatic climate change was previously proposed to be responsible for the disappearance of turtles 71-million-years ago, because they were considered to be "climate-sensitive" animals. Results of this research, however, show that the disappearance of turtles came before the climate cooled and instead closely corresponds to habitat disturbances, which was the disappearance of wetlands.

"The big surprise is that some animals, for example turtles, appeared to be more sensitive to habitat disturbances than to climate changes. Therefore, even if climatic conditions are 'ideal,' turtles may disappear or may not recover unless habitats are just right," says Quinney.

Quinney and supervisors Zelenitsky, assistant professor in the Department of Geoscience, and Franois Therrien of th
'/>"/>

Contact: Leanne Yohemas
lmyohema@ucalgary.ca
403-220-7722
University of Calgary
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Nevada climate, environmental data network to inform research, community
2. International conference to tackle climate-change threats to agriculture
3. Climate-smart strategies proposed for spectacular US-Canadian landscape
4. A game plan for climate change
5. March of the pathogens: Parasite metabolism can foretell disease ranges under climate change
6. Smart way for seafarers to track effects of climate change
7. Biologists lead international team to track Arctic response to climate change
8. Poll: Americans back climate change regulation, not taxes
9. Profiting from climate change
10. Antarctic ice core contains unrivaled detail of past climate
11. Blowing hot and cold: US belief in climate change shifts with weather
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Dinosaur-era climate change study suggests reasons for turtle disappearance
(Date:10/29/2014)... Researching the safety of nanoparticles is all the rage. ... topic, examining the question of whether titanium dioxide nanoparticles ... into the body, whether carbon nanotubes from electronic products ... to be or whether nanoparticles in food can get ... Public interest is great, research funds are flowing – ...
(Date:10/29/2014)... decompose, their types and numbers of bugs and ... mean the difference between a closed case and ... using a more than $866,000 U.S. Department of ... these changing populations. The microbial communities may provide ... gender, race, socioeconomic relations and more, said Eric ...
(Date:10/29/2014)... of stem cell, those referred to as ,facultative, form ... apparently nothing that differentiates these cells from the others. ... retain the capacity to become stem cells again. This ... organ that hosts cells that stimulate tissue growth, thus ... of a transplant. Knowledge of the underlying mechanism ...
Breaking Biology News(10 mins):Nanosafety research: The quest for the gold standard 2Nanosafety research: The quest for the gold standard 3MSU partners with Detroit to investigate death scenes 2A mechanism that allows a differentiated cell to reactivate as a stem cell revealed 2
... new study of transfer RNA, a molecule that delivers amino ... ideas about the evolutionary history of protein synthesis., In the ... (reading the genetic blueprint for a protein, and adding a ... appear to have originated independently of one another. The new ...
... a devastating new wheat disease strain which could lead to ... in the United States, with funding from the Bill & ... undertake the research as part of the Durable Rust Resistance ... the fungus, wheat stem rust. World leaders in rust ...
... has been honored for his role in the development ... who suffer severe, life-threatening injuries in Iraq and Afghanistan. ... for Combat Casualty Care Award was presented to Stucky ... annual meeting in Florida. The ATACCC convention is the ...
Cached Biology News:Study reveals surprising details of the evolution of protein translation 2CSIRO enlisted to avert global wheat supply crisis 2UCSB chemistry professor receives top military award for life-saving gauze 2UCSB chemistry professor receives top military award for life-saving gauze 3
(Date:10/31/2014)... Fla. , Oct. 31, 2014  Tavistock ... owned by Tavistock Group, celebrated the groundbreaking of the ... Medical City. The 92,000-square-foot, three-story ... Central Florida designed specifically for ... in the heart of the 650-acre Lake Nona ...
(Date:10/30/2014)... Global polyvinyl chloride (PVC) demand registered a significant ... especially in North America and Europe. However, the global ... a growing trend. , The largest chunk of the ... segment. In 2013, the key PVC application spheres included ... film. Moreover, the PVC was consumed in the production ...
(Date:10/30/2014)... James Sherley says he has been working ... cell technology since his days as a principal investigator at ... late 1990’s. Sherley founded the ASCTC as a new ... the intellectual property developed in Sherley’s research over the years ... of Technology (MIT), and more recently as a senior scientist ...
(Date:10/30/2014)... Isis Pharmaceuticals, Inc. (NASDAQ: ISIS ), ... present a company overview at the Nomura Biotechnology Conference on ... Boston, MA. A live webcast ... Media" section of the Company,s website, www.isispharm.com .  A ... hours and will be archived for a limited time. ...
Breaking Biology Technology:GuideWell Innovation Center Groundbreaking Hosted by Tavistock Development Company at Lake Nona Medical City 2GuideWell Innovation Center Groundbreaking Hosted by Tavistock Development Company at Lake Nona Medical City 3Global Polyvinyl Chloride Demand Is on Upward Trend Now, Says Merchant Research & Consulting in Its Topical Study 2Global Polyvinyl Chloride Demand Is on Upward Trend Now, Says Merchant Research & Consulting in Its Topical Study 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 2Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 4Isis Pharmaceuticals to Present at the Nomura Biotechnology Conference 2
... Corporation,(OTC Bulletin Board: CONX), a worldwide developer and ... Test at the,American Diabetes Association,s 68th Scientific Sessions. ... - 9, 2008, at the Moscone Convention,Center in ... time the AspirinWorks test will be exhibited at,the ...
... Ongoing Live-Cell Research, MELVILLE, N.Y., June ... and Northwestern University,s Feinberg School of,Medicine announced ... imaging,center, establishing a partnership that brings improved ... for Nikon,product development. One of only three ...
... Therapeutics, a drug,and diagnostic company, today announces that ... 1st as Chief Operating Officer. At the next,meeting ... CEO (President du,Directoire)., Laurent Condomine, Chairman of ... Loic Maurel joining ExonHit Therapeutics. His,experience and track ...
Cached Biology Technology:Corgenix to Exhibit AspirinWorks(R) Test at ADA 2008 Meeting in San Francisco 2Corgenix to Exhibit AspirinWorks(R) Test at ADA 2008 Meeting in San Francisco 3Nikon Instruments Opens New Imaging Center at Northwestern University 2Nikon Instruments Opens New Imaging Center at Northwestern University 3Loic Maurel Joins Exonhit Therapeutics to Become CEO 2Loic Maurel Joins Exonhit Therapeutics to Become CEO 3Loic Maurel Joins Exonhit Therapeutics to Become CEO 4
The filter 605DF50 for the Molecular Imager FX is a band pass filter for ethidium bromide, SYPRO Red, SYPRO Ruby, Alexa Fluor 532 and 546, and Cy3 dyes when using the 635 nm laser....
The sample holders for gels are used to hold gels in place in the multi-sample tray I, which is used with Molecular Imager FX imaging systems....
... APO-DIRECT is a single-step staining method ... cells by flow cytometry. The kit contains ... apoptosis in cells including: positive and negative ... reaction and rinsing buffers for processing individual ...
... is specifically for electrofocusing. It ... is recommended for electrofocusing of ... or complexes that are subject ... sieving in polyacrylamide gels. Supplied ...
Biology Products: