Navigation Links
Low oxygen likely made Great Dying worse, greatly delayed recovery

summit of a 9,200-foot mountain today. By the early Triassic period, sea-level oxygen content of less than 12 percent would have been the same as it is today in the thin air at 17,400 feet, higher than any permanent human habitation. That means even animals at sea level would have been oxygen challenged.

Huey and UW paleontologist Peter Ward are authors of a paper detailing the work, published in the April 15 edition of the journal Science. The work was supported by grants from the National Science Foundation and the National Aeronautics and Space Administration's Astrobiology Institute.

Not only was atmospheric oxygen content dropping at the end of the Permian, the scientists said, but carbon dioxide levels were rising, leading to global climate warming.

"Declining oxygen and warming temperatures would have been doubly stressful for late Permian animals," Huey said. "As the climate warms, body temperatures and metabolic rates go up. That means oxygen demand is going up, so animals would face an increased oxygen demand and a reduced supply. It would be like forcing athletes to exercise more but giving them less food. They'd be in trouble."

Ward was lead author of a paper published in Science earlier this year presenting evidence that extinction rates of land vertebrates were elevated throughout the late Permian, likely because of climate change, and culminated in a mass extinction at the end of the Permian. The event, often called "the Great Dying," was the greatest mass extinction in Earth's history, killing 90 percent of all marine life and nearly three-quarters of land plants and animals.

Ward said paleontologists had previously assumed that Pangea was not just a supercontinent but also a "superhighway" on which species would have encountered few roadblocks while moving from one place to another.

However, it appears the greatly reduced oxygen actually created impassable barriers that affected the ability of animals
'"/>

Source:UW News


Page: 1 2 3

Related biology news :

1. Why do insects stop breathing? To avoid damage from too much oxygen, say researchers
2. Hopkins researchers discover genetic switch that turns off an oxygen-poor cells combustion engine
3. Dont hold your breath: Carp can manage without oxygen for months
4. Heart has enough oxygen to survive hypothermia, CPR crucial
5. Steep oxygen decline halted first land colonization by Earths sea creatures
6. Technology for monitoring fetal oxygen during labor offers no apparent benefit
7. Giant insects might reign if only there was more oxygen in the air
8. Seals protect brain, conserve oxygen by turning off shivering response on icy dives
9. Genetically engineered blood protein can be used to split water into oxygen and hydrogen
10. Breathing easy: When it comes to oxygen, a bugs life is full of it
11. Need oxygen? Cells know how to spend and save
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Low oxygen likely made Great Dying worse greatly delayed recovery

(Date:4/23/2014)... conclusive evidence that the source of a unique rhythmic ... called the "bio-duck," is the Antarctic minke whale ( ... personnel in the 1960s who thought it sounded like ... various locations in the Southern Ocean, but its source ... 2013, an international team of researchers deployed acoustic tags ...
(Date:4/23/2014)... The shale gas boom has transformed the energy ... locations, it could cause conflict among the energy ... resources, say researchers. They add that degraded water ... adequate safeguards. The feature article appears in the ... , Meagan S. Mauter and colleagues point out ...
(Date:4/23/2014)... 23 April 2013 EMBO today announced Sophie Martin ... of the 2014 EMBO Gold Medal. The award acknowledges ... the organization and development of the cell. , Martin ... understand cellular polarity, in particular the way in which ... and cell division. In the last 11 years, she ...
Breaking Biology News(10 mins):Scientists identify source of mysterious sound in the Southern Ocean 2Scientists identify source of mysterious sound in the Southern Ocean 3How to avoid water wars between 'fracking' industry and residents 2EMBO Gold Medal 2014 awarded to Sophie Martin 2
... of Leicester in collaboration with Northamptonshire Police is ... John Bond, from Northamptonshire Police Scientific Support Unit ... of Leicester,s Forensic Research Centre developed- in collaboration ... fingerprints, even after the print itself has been ...
... June 22 The Federal Bureau of Investigation (FBI) ... a five-year, $47 million contract to continue managing the ... Service (CSS) program. The contract covers the conversion of ... electronic records for the FBI. , , ...
... Delays in cargo screening significantly extend the time of ... foolproof and rapid screening and detection systems. At the ... need for efficient access control systems in ports and ... , , New analysis from Frost & Sullivan ...
Cached Biology News:New advance in revolutionary 'bullet fingerprinting' technique 2Federal Bureau of Investigation Awards Lockheed Martin Biometric Card Scanning Service Contract 2Growing Demand for Rapid Screening and Detection Systems Pushes the European Maritime Security Market, Finds Frost & Sullivan 2Growing Demand for Rapid Screening and Detection Systems Pushes the European Maritime Security Market, Finds Frost & Sullivan 3
(Date:1/15/2014)... is the device," Nobel laureate Herbert Kroemer famously ... found at the junctures where layers of different ... the interfaces between layers of metal oxides are ... favorites as spintronics, high-temperature superconductors, ferroelectrics and multiferroics. ...
(Date:1/15/2014)... FALLS, N.Y., Jan. 15, 2014   Niagara Thermal Products ... by Buffalo BioBlower Technologies LLC ("B3") as the critical ... 2 award from the Army Corps of Engineers.  B3 ... kills all biological contaminants and destroys VOCs and other ...
(Date:1/15/2014)... and SAN JOSE, California , ... biotechnology company developing antibody-drug conjugates for cancer, today announced the ... of Directors. Dr Reynolds has over 20 years, development experience ... Officer at Seattle Genetics. "I am delighted to ...
(Date:1/15/2014)... IPSWICH, England , January 15, 2014 ... to win races on the Formula 1 track could help ... between McLaren Applied Technologies (MAT), Stowhealth (a GP surgery based ... funded by healthcare provider Simplyhealth. Telemetry technology, which ...
Breaking Biology Technology:A deeper look at interfaces 2Niagara Thermal Products LLC Selected as Critical Supplier for Buffalo BioBlower Air Purification Systems 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 2Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 4
... subsidiary of Milwaukee-based Merge Healthcare, said it will ... surgeons . , ,The company's OrthoWorks product will ... communications system (PACS), helping support joint arthroplasty, spine, ... the firm said. , ,Mayo Clinic has 70 ...
... Installation work on Milwaukee's Wi-Fi network could begin in ... and Midwest Fiber Networks said Thursday. , ,The ... which last month selected Midwest Fiber to build and maintain ... is dry on the agreements, "equipment will be mounted on ...
... Europe, I can't help making the obvious comparisons between ... countries. , ,I've written before about Wi-Fi. In the ... about anywhere, and there is relative good will about ... Wi-Fi is not public and not inexpensive. I'm sending ...
Cached Biology Technology:U.S. risks third-world status in key technology 2U.S. risks third-world status in key technology 3
... overlays are commonly used in ... "DNA grade" agaroses either contain ... insect cells or lack the ... good overlays. Novagen's BacPlaque Agarose ...
AgarPlaque Plus Agarose 50 grams...
...
...
Biology Products: