Bacteria may contribute more to climate change as planet heats up

Go down

Bacteria may contribute more to climate change as planet heats up Empty Bacteria may contribute more to climate change as planet heats up

Post by eddie on Tue Nov 19, 2019 8:13 pm

By releasing more carbon as global temperatures rise, bacteria and related organisms called archaea could increase climate warming at a faster rate than current models suggest. The new research, published today in Nature Communications by scientists from Imperial College London, could help inform more accurate models of future climate warming.

Bacteria and archaea, collectively known as prokaryotes, are present on every continent and make up around half of global biomass -- the total weight of all organisms on Earth.

Most prokaryotes perform respiration that uses energy and releases carbon dioxide -- just like we do when we breathe out. The amount of carbon dioxide released during a given time period depends on the prokaryote's respiration rate, which can change in response to temperature.

However, the exact relationship between temperature, respiration rate and carbon output has been uncertain. Now, by bringing together a database of respiration rate changes according to temperature from 482 prokaryotes, researchers have found the majority will increase their carbon output in response to higher temperatures to a greater degree than previously thought.

Lead researcher Dr Samraat Pawar, from the Department of Life Sciences at Imperial, said: "In the short term, on a scale of days to hours, individual prokaryotes will increase their metabolism and produce more carbon dioxide. However, there is still a maximum temperature at which their metabolism becomes inefficient.

"In the longer term, over years, these prokaryote communities will evolve to be more efficient at higher temperatures, allowing them to further increase their metabolism and their carbon output.

"Rising temperatures therefore cause a 'double whammy' effect on many prokaryote communities, allowing them to function more efficiently in both the short and long term, and creating an even larger contribution to global carbon and resulting temperatures."


https://www.sciencedaily.com/releases/2019/11/191112110214.htm

_________________
”The true genius shudders at incompleteness - and usually prefers silence to saying something which is not everything it should be.“
~ Edgar Allan Poe
eddie
eddie
King of Beards. Keeper of the Whip. Top Chef. BEES!!!!!! Mushroom muncher. Spider aficionado!

Posts : 39820
Join date : 2013-07-28
Age : 49
Location : England

Back to top Go down

Bacteria may contribute more to climate change as planet heats up Empty Re: Bacteria may contribute more to climate change as planet heats up

Post by Ben Reilly on Tue Nov 19, 2019 8:16 pm

This might very well be the reason that temperature/CO2 graphs often show CO2 levels shooting up slightly after temperatures begin to increase.

This is not good.

_________________
"I became insane, with long intervals of horrible sanity."

- Edgar Allan Poe
Ben Reilly
Ben Reilly
Cowboy King. Dread Pirate of the Guadalupe. Robin Hood of Epping Forest. Fifty Shades of Cray.

Posts : 27842
Join date : 2013-01-19
Age : 44
Location : Tesco's

http://www.newsfixboard.com

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum