Navigation Links
Shark teeth analysis provides detailed new look at Arctic climate change
Date:7/9/2014

A new study shows that some shark species may be able to cope with the rising salinity of Arctic waters that may come with rising temperatures.

The Arctic today is best known for its tundra and polar bear population, but it wasn't always like that. Roughly 53 to 38 million years ago during what is known as the Eocene epoch, the Arctic was more similar to a huge temperate forest with brackish water, home to a variety of animal life, including ancestors of tapirs, hippo-like creatures, crocodiles and giant tortoises. Much of what is known about the region during this period comes from well-documented terrestrial deposits. Marine records have been harder to come by.

A new study of shark teeth taken from a coastal Arctic Ocean site has expanded the understanding of Eocene marine life. Leading the study was Sora Kim, the T.C. Chamberlin Postdoctoral Fellow in Geophysical Sciences at the University of Chicago, in coordination with Jaelyn Eberle at the University of Colorado, Boulder, and their three co-authors. Their findings were published online June 30 by the journal Geology.

The Arctic is of special interest today because it is increasing in temperature at twice the global rate. According to Kim, past climate change in the Arctic can serve as a proxy to better understand our current climate change and aid future predictions. The Eocene epoch, she said, is like a "deep-time analogue for what's going to happen if we don't curb CO2 emissions today, and potentially what a runaway greenhouse effect looks like."

Before this study, marine records primarily came from deep-sea cores pulled from a central Arctic Ocean site, the Lomonosov Ridge. Kim and Eberle studied shark teeth from a new coastal site on Banks Island. This allowed them to better understand the changes in ocean water salinity across a broader geographic area during a time of elevated global temperatures. Shark teeth are one of the few available vertebrate mar
'/>"/>

Contact: Steve Koppes
skoppes@uchicago.edu
773-702-8366
University of Chicago
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Law that regulates shark fishery is too liberal: UBC study
2. New species of deep-sea catshark described from the Galapagos
3. Hammerhead shark double whammy
4. Scientists provide first large-scale estimate of reef shark losses in the Pacific Ocean
5. Where we split from sharks: Common ancestor comes into focus
6. Public sightings suggest increase in basking sharks in British waters
7. Shark rules need teeth, groups tell IUCN
8. Sharks: Bad creatures or bad image?
9. New ancient shark species gives insight into origin of great white
10. New whale shark study used metabolomics to help understand shark and ray health
11. Baby sharks stay still to avoid being detected by predators
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Shark teeth analysis provides detailed new look at Arctic climate change
(Date:7/27/2015)... , July 27, 2015  Synaptics Inc. (NASDAQ: ... interface solutions, today announced that Huawei has selected ... solution for its stylish smartwatch. Huawei chose the ... reliability, low power and highly responsive human interface ... Huawei designers also required a classic round watch ...
(Date:7/21/2015)... July 21, 2015 Today, ZTE announced its ... as well as expected revenues in 2015 that relate to sales ... revenue guidance of approximately 2,200 MSEK for 2015. Jörgen ... leading smartphone manufacturer in China and we ... 02 5 for Axon , ...
(Date:7/13/2015)... , July 13, 2015 Synaptics Inc. ... human interface solutions, today announced sampling of ClearPad ... display driver integration (TDDI) product targeting smartphones and ... to combine Synaptics , best-in-class touch controller ... driver technology developed in the company,s Japan Design ...
Breaking Biology News(10 mins):Synaptics Touchscreen Solution Powers New Huawei Watch 2Synaptics Touchscreen Solution Powers New Huawei Watch 3FPC's Touch Fingerprint Sensor FPC1025 in ZTE's Smartphone Axon 2Synaptics Announces Sampling of Second Generation TDDI Solutions 2Synaptics Announces Sampling of Second Generation TDDI Solutions 3
... If you carried a gene that increased your risk ... know? Do perceptions of stigma and discrimination against people ... disease? Sara Shostak, assistant professor in the department ... of epidemiology at Columbia University, and other collaborators were ...
... - Mercyhurst University biologists have received a $30,000 grant to ... woolly adelgid, a small, aphidlike insect that is decimating the ... considered one of the greatest threats to our eastern forests; ... Georgia," said Michael Elnitsky, assistant professor of biology, who wrote ...
... Institute at Oregon State University have discovered yet another reason ... is so good for you it provides not just ... mechanism of epigenetics. Epigenetics, an increasing focus of research ... but also to the way that diet, toxins and other ...
Cached Biology News:Grant to fund research into psychosocial impacts of epilepsy testing 2Grant to fund research into psychosocial impacts of epilepsy testing 3Mercyhurst research aims to predict impact of invasive forest pest 2Another mechanism discovered by which sulforaphane prevents cancer 2
(Date:7/29/2015)... College Station, TX (PRWEB) , ... July 29, ... ... cleanroom POD® designer, manufacturer and supplier, announces the launch of their 2nd generation ... compared to the current miniPOD CT, but it also represents a new POD® ...
(Date:7/29/2015)... CHICAGO , July 29, 2015  AmnioChor Inc., ... cell technology, is very pleased to announce that the ... has agreed to invest in their seed round ... OmniBank placental tissue storage capabilities. AmnioChor,s ... placenta, and the human stem cells living within those ...
(Date:7/29/2015)... -- Indivior PLC (LON: INDV) today announced that the New ... and received Priority Review by the U.S. Food and ... This naloxone nasal spray comes as a pre-filled device ... the nasal mucosa. 1 The device has been ... better equipped to help an opioid overdose victim. ...
(Date:7/29/2015)... CITY , July 29, 2015 /PRNewswire/ - Aeterna ... today announced it has selected an optimized Erk ... milestone in the development of a new class ... MAPK pathway represents a prime target for therapeutic ... antitumor activities and survival benefits for B-Raf and ...
Breaking Biology Technology:G-CON Manufacturing Launches Their 2nd Generation Cell Therapy Cleanroom POD® 2G-CON Manufacturing Launches Their 2nd Generation Cell Therapy Cleanroom POD® 3The Musculoskeletal Transplant Foundation Agrees to Invest in AmnioChor 2Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 2Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 4Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 5Aeterna Zentaris Announces Optimized Erk Inhibitor Compounds For Further Development 2Aeterna Zentaris Announces Optimized Erk Inhibitor Compounds For Further Development 3
... , WALTHAM, Mass., Oct. 20 Inverness Medical Innovations, Inc. ... to take charge of their health at home through the ... it will release its third quarter 2009 earnings on Tuesday, ... call beginning at 10:00 a.m. (Eastern Time) on that date ...
... Transdel Pharmaceuticals, Inc. (OTC Bulletin Board: TDLP), a specialty ... its proprietary transdermal delivery platform, today announced that Dr. ... will present a company overview at two upcoming ... annual BIOCOM Investor Conference in San Diego, CA on ...
... 20 GeoVax Labs, Inc. (OTC Bulletin ... Atlanta-based, biopharmaceutical company developing human vaccines for diseases caused ... today announced that it will move its corporate headquarters ... University to Smyrna, Georgia, a northwest suburb of Atlanta, ...
Cached Biology Technology:Inverness Medical Innovations Schedules Conference Call for 10:00 a.m. ET October 27, 2009 to Discuss Third Quarter 2009 Results 2Transdel Pharmaceuticals to Present at Two Investor Conferences 2Transdel Pharmaceuticals to Present at Two Investor Conferences 3GeoVax Labs, Inc. Moving Operations to Smyrna, Georgia 2GeoVax Labs, Inc. Moving Operations to Smyrna, Georgia 3GeoVax Labs, Inc. Moving Operations to Smyrna, Georgia 4