Subscribe to our free daily newsletters
. Earth Science News .




Subscribe to our free daily newsletters



FLORA AND FAUNA
Plant respiration could become a bigger feedback on climate than expected
by Staff Writers
Exeter UK (SPX) Nov 27, 2017


illustration only

New research, led by the Centre for Ecology and Hydrology, suggests that plant respiration is a larger source of carbon emissions than previously thought, and warn that as the world warms, this may reduce the ability of Earth's land surface to absorb emissions due to fossil fuel burning.

The new findings, published in the journal Nature Communications today [November 17th] are based on the comprehensive GlobResp database, which comprises over 10,000 measurements of carbon dioxide plant respiration from many plant species and from across the globe.

Merging these data with existing computer models of global land carbon cycling shows that plant respiration has been a potentially underestimated source of carbon dioxide release to the atmosphere. The study shows that across the world, carbon release by plant respiration may be around 30% higher than previously predicted. As mean global temperature increases, the researchers also estimate that respiration will increase significantly. Such increases may lower the future ability of global vegetation to offset carbon dioxide emissions caused by burning of fossil fuels.

Lead author, Professor Chris Huntingford, of the UK Centre for Ecology and Hydrology says: "Plants both capture carbon dioxide and then release it by respiration. Changes to either of these processes in response to climate change have profound implications for how much ecosystems soak up carbon dioxide emissions from burning fossil fuels.

"We find that respiration losses of carbon dioxide by plant respiration is 30% higher than previous estimates, and is expected to increase more than expected under global warming.

"For too long, plant respiration loses of carbon dioxide to the atmosphere have been the Cinderella of ecosystem computer modelling, with carbon dioxide gains via photosynthesis stealing the attention. Here we address that, using extensive measurements of respiration to guide computer-based calculations of how carbon cycles through trees and plants."

Professor Owen Atkin from the ARC Centre of Excellence in Plant Energy Biology at the Australian National University (ANU) said: "This study has been the result of an especially close collaboration over several years between field scientists, those who build computer models of how the global land surface operates, and researchers assessing expected future climate change.

"The study uses plant respiration data from over 100 remote sites around the world, from hot deserts in Australia, to the deciduous and boreal forests of North America and Europe, the arctic tundra in Alaska, and the tropical forests of South America, Asia, Africa and northern Australia."

Dr Anna Harper from the University of Exeter: "These data, when incorporated into state-of-the-art carbon cycling models, provide unprecedented insights into the extent of global plant respiration, and how future climates may impact the overall ability of plants to take in carbon dioxide."

Dr Mary Heskel from the Ecosystems Center, Marine Biological Laboratory in Woods Hole, USA said: "We are now one-step closer to more accurately modelling carbon-exchange in ecosystems across the world. Indeed, the study provides the most informed picture to date of current and future carbon release from plants in terrestrial systems."

Dr Alberto Martinez-de la Torre, of the UK Centre for Ecology and Hydrology said: "The implications of plant respiration being 30% higher than previous estimates suggest a fuller review might be needed on how we model all carbon flows in and out of plants across the world."

Research paper

FLORA AND FAUNA
New NASA Insights into the Secret Lives of Plants
Pasadena CA (JPL) Nov 27, 2017
Life. It's the one thing that, so far, makes Earth unique among the thousands of other planets we've discovered. Since the fall of 1997, NASA satellites have continuously and globally observed all plant life at the surface of the land and ocean. During the week of Nov. 13-17, NASA is sharing stories and videos about how this view of life from space is furthering knowledge of our home planet and ... read more

Related Links
Centre for Ecology and Hydrology
Darwin Today At TerraDaily.com


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

FLORA AND FAUNA
Libya navy says over 30 migrants dead, 200 rescued off coast

South Korea quiet for quake-delayed college entrance exam

Aid groups urge Greece to improve refugee camps before winter

Dutch St Martin's PM quits after pressure over Irma aid

FLORA AND FAUNA
New way to write magnetic info could pave the way for hardware neural networks

Borophene shines alone as 2-D plasmonic material

Metal membranes in construction: From Russia with love

Spin current from heat: New material increases efficiency

FLORA AND FAUNA
The tragedy of the seagrass commons

Ocean acidification harms young mussels

New research could predict La Nina drought years in US

Coral transplant raises Barrier Reef survival hopes

FLORA AND FAUNA
Study reveals structure and origins of glacial polish on Yosemite's rocks

Polar bears crowd on Russian island in sign of Arctic change

Salt pond in Antarctica is fed from below

A new timeline for glacial retreat in Western Canada

FLORA AND FAUNA
Intercropping formula promises food security in Sahel Africa

Urbanization may have a positive effect on the soils

Portuguese cattle farmers desperately wait for rain

Crunch time for food security

FLORA AND FAUNA
Thousands flee over Bali volcano eruption fears

Iran earthquake death toll rises to 483

Floods paralyse Saudi city of Jeddah

Thousands flee as Bali raises volcano alert to highest level

FLORA AND FAUNA
Zimbabwe crisis: What we know

Chinese firm probes if children work in African mines

China respects 'good friend' Mugabe's resignation

US strike in Somalia kills more than 100 Shabaab fighters

FLORA AND FAUNA
What grosses out a chimpanzee?

Human evolution was uneven and punctuated, suggests new research

Chimp study reveals how brain's structure shaped our evolution

High cognitive ability not a safeguard from conspiracies, paranormal beliefs




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement