Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

People say we're running out of energy. That's only true if we stick with these old 19th century technologies. We are awash in energy from sunlight.

 

Ray Kurzweil

 

How did sea creatures survive the dinosaurs' extinction?

RATE THIS! +10
Posted in Science on 14th Apr, 2016 09:22 PM by AlexMuller

Paleontologists have long wondered how deep sea creatures were able to survive the event that wiped out the dinosaurs and a new study indicates some varieties of algae and microorganisms would have survived a massive asteroid and acted as a food source for creatures living on the seafloor.

 
Published in the journal Geology, the new study is based on information from chemical analysis of fossilized shells and seafloor organisms from the end of the Cretaceous period. Study samples were extracted from drilling cores pulled from the ocean floor in the South Atlantic.
 
The analysis pointed to the flux, or movement, of organic material from the sea surface to the seafloor after an asteroid impact, and indicated that slow flow of food was continuously being shipped to the deep ocean.
 
Additionally, the team found the food supply in the ocean was completely restored around 1.7 million years after the asteroid strike, nearly half the time of original estimations. This indicates marine food chains recovered quicker than previously believed.
 
"The global catastrophe that caused the extinction of the dinosaurs also devastated ocean ecosystems,” study author Heather Birch, a Cardiff University researcher from the School of Earth and Ocean Sciences, said in a press release. “Giant marine reptiles met their end as did various types of invertebrates such as the iconic ammonites."
 
"Our results show that despite a wave of massive and virtually instantaneous extinctions among the plankton, some types of photosynthesising organisms, such as algae and bacteria, were living in the aftermath of the asteroid strike,” Birch added.
 
Many researchers have said the mass extinction of life on Earth 65 million years ago was brought on by an asteroid that hit Mexico's Yucatán Peninsula. It is said that the debris from impact deprived Earth of life-giving light from the Sun. Once the debris settled down, it resulted in greenhouse gases capturing the Sun's heat and causing temperatures to increase significantly.
 
This era of darkness followed by rising heat, referred to as the Cretaceous-Paleogene perimeter, is considered to have obliterated nearly one half of the world's species.
 
Researchers have also claimed the impact of the asteroid would have crammed Earth's atmosphere with sulphur trioxide, triggering a mass quantity of sulphuric acid rain to fall within a few days. This would make the top of the ocean too acidic for creatures to exist there.

Tags: seaoceanbiologyanimalasteroidPaleontologylifeEarth

Read original article » Back to category

Comments

Author: Guest
Posted: 2016-05-06
+0
oleg:Ну-ну))Меня отец собирался Ратибором оÃ)Â°ÃÂ·ÃÂ²½Â°Ã‘‚ÑŒ)Ã)ПовезлÐÂÂ,что когда меня регистрировали,он далеко был)))Хотя мама ,при всей мягкости,всегда на своем настоять умела…Она у нас великий дипломат)) Reply
Author: Guest
Posted: 2016-05-06
+0
oleg:Ну-ну))Меня отец собирался Ратибором оÃ)Â°ÃÂ·ÃÂ²½Â°Ã‘‚ÑŒ)Ã)ПовезлÐÂÂ,что когда меня регистрировали,он далеко был)))Хотя мама ,при всей мягкости,всегда на своем настоять умела…Она у нас великий дипломат)) Reply


 

Recent headlines

  • Posted in Science on 2017-10-22 04:22:31
    Blue Origin’s Breakthrough Means SpaceX Finally Has a.....read more
    Posted in Business on 2017-10-22 04:17:51
    Bitcoin boom prompts growth of coin-mining malware..read more
    Posted in Science on 2017-10-22 04:14:04
    MDMA Advances Another Step As Tool to Treat PTSD..read more
    Posted in Science on 2017-10-21 02:03:22
    Japan Just Discovered the Perfect Spot to Build a Moonbase..read more
    Posted in Hardware on 2017-10-21 01:52:51
    Up to 200 pound pieces of China’s Space Station could.....read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Scientists probe Neptune's depths to reveal secrets of icy.....read more
    Posted by AlexMuller
    New terahertz imaging approach could speed up skin cancer.....read more
    Posted by AlexMuller
    Rebutting the claim that antidepressants do not work..read more
    Posted by AlexMuller
    Artificial neural networks decode brain activity during.....read more
    Posted by AlexMuller
    Four Earth-sized planets detected orbiting the nearest.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me