Deadwood Releasing 10.9 Gigatons of Carbon Every Year– More Than All Fossil Fuel Emissions Combined

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Deadwood Forest

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Credit: Australian National University

Decaying wood launches around 10.9 gigatons of carbon around the world every year, according to a brand-new research study by a worldwide group of researchers.

This is approximately comparable to 115 percent of nonrenewable fuel source emissions.

Co- author of the research study Professor David Lindenmayer from The Australian National University (ANU) states it’s the very first time scientists have actually had the ability to measure the contribution of nonessential to the international carbon cycle.

“Until now, little has been known about the role of dead trees,” Professor Lindenmayer stated.

“We know living trees play a vital role in absorbing carbon dioxide from the atmosphere. But up until now, we didn’t know what happens when those trees decompose. It turns out, it has a massive impact.”

Professor Lindenmayer stated the decay is driven by natural procedures consisting of temperature level and bugs.

“The decomposition of wood and the recycling of those nutrients is a critically important process in forests,” he stated.

The research study revealed decay can’t take place without wood-boring bugs such as Longicorn Beetles.

“We knew insects such as termites and wood-boring Longicorn beetles can accelerate deadwood decomposition,” research study co-authorDr Marisa Stone from Griffith University stated.

“But previously, we didn’t understand just how much they add to nonessential carbon release internationally.

“Insects accounted for 29% of deadwood carbon release each year. However, their role was disproportionately greater within the tropics and had little effect in regions of low temperatures.”

The international research study job included 55 forest locations on 6 continents. The research study group studied wood from more than 140 tree types to identify the impact of environment on the rate of decay.

“Half the wood was placed in mesh cages which kept out insects, allowing us to study their contribution,” Professor Lindenmayer stated.

“We found both the rate of decomposition and the contribution of insects are highly dependent on the climate, and will increase as temperatures rise. Higher levels of precipitation accelerate the decomposition in warmer regions and slow it down in lower temperature regions.”

Tropical forests contribute 93 percent of all carbon launched by nonessential, due to their high wood mass and quick rates of decay.

The research study was led byDr Sebastian Seibold from the Technical University of Munich.

“At a time of global change, we can see some dramatic declines in biodiversity and changes in climate,”Dr Seibold stated.

“This study has demonstrated that both climate change and the loss of insects have the potential to alter the decomposition of wood, and therefore, carbon and nutrient cycles worldwide.”

The research study has actually been released in Nature

Reference: “The contribution of insects to global forest deadwood decomposition” by Sebastian Seibold, Werner Rammer, Torsten Hothorn, Rupert Seidl, Michael D. Ulyshen, Janina Lorz, Marc W. Cadotte, David B. Lindenmayer, Yagya P. Adhikari, Roxana Arag ón, Soyeon Bae, Petr Baldrian, Hassan Barimani Varandi, Jos Barlow, Claus Bässler, Jacques Beauch êne, Erika Berenguer, Rodrigo S. Bergamin, Tone Birkemoe, Gergely Boros, Roland Brandl, Herv é Brustel, Philip J. Burton, Yvonne T. Cakpo-Tossou, Jorge Castro, Eug énie Cateau, Tyler P. Cobb, Nina Farwig, Romina D. Fern ández, Jennifer Firn, Kee Seng Gan, Grizelle Gonz ález, Martin M. Gossner, Jan C. Habel, Christian Hébert, Christoph Heibl, Osmo Heikkala, Andreas Hemp, Claudia Hemp, Joakim Hj ältén, Stefan Hotes, Jari Kouki, Thibault Lachat, Jie Liu, Yu Liu, Ya-Huang Luo, Damasa M. Macandog, Pablo E. Martina, Sharif A. Mukul, Baatarbileg Nachin, Kurtis Nisbet, John O’Halloran, Anne Oxbrough, Jeev Nath Pandey, Tom áš Pavl íček, Stephen M. Pawson, Jacques S. Rakotondranary, Jean-Baptiste Ramanamanjato, Liana Rossi, Jürgen Schmidl, Mark Schulze, Stephen Seaton, Marisa J. Stone, Nigel E. Stork, Byambagerel Suran, Anne Sverdrup-Thygeson, Simon Thorn, Ganesh Thyagarajan, Timothy J. Wardlaw, Wolfgang W. Weisser, Sungsoo Yoon, Naili Zhang and Jörg Müller, 1 September 2021, Nature
DOI: 10.1038/ s41586-021-03740 -8



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