Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Loss of posidonia reduces CO2 storage areas and could contribute to gas emissions

09.02.2015

Repopulating these meadows would prevent eroding important deposits of organic carbon

The loss of underwater posidonia meadows poses two problems: these areas can no longer capture and store atmospheric CO2, and, moreover, they can become a source of this gas by eroding and freeing the carbon stored in the meadow during decades or even centuries.


This image shows a Posidonia australis meadow.

Credit: Gary A. Kendrick

This is one of the main conclusions reached by an international team which included the participation of the Spanish National Research Council (CSIC), the Universitat Autònoma de Barcelona (UAB) and the Oceans Institute of the University of Western Australia. The team assessed whether the revegetation of underwater meadows is effective in restoring their capacity to act as carbon sinks in relation to the time needed to achieve this (decades). The study was published in the Journal of Ecology.

"The revegetation of meadows prevents the erosion of these organic carbon deposits which have accumulated throughout centuries in meadows which have now disappeared," points out CSIC researcher Núria Marbà from the Mediterranean Institute for Advanced Studies (IMEDEA).

"Our results indicate that the loss of this ecosystem must have also represented an important loss in the capacity to sequester and store carbon in the sediments of underwater meadows," she adds.

Pere Masqué, at the UAB and co-author of the study, highlights that "the potential areas available worldwide to carry out marine angiosperm revegetation projects is enormous", and adds that "these can help reconstruct carbon sinks, as well as preserve older deposits".

Seagrass meadows are relevant as carbon sinks at a global scale and that is why their conservation and restoration can contribute to mitigating anthropogenic emissions, researchers state. In addition, the results of this study contribute to dispel the doubts which were hindering the development of blue carbon strategies in underwater meadows. Blue carbon is the term given to carbon captured by marine and coastal ecosystems in the form of biomass and sediments.

The researchers explain that the study was conducted at Oyster Harbour, in Western Australia. "This area is colonised by a meadow of Posidonia australis that largely was lost from the 1960s to the end of the 1980s. After 1994, the meadow recovered in part thanks to a series of revegetation efforts which went on until 2006 under the direction of Geoff Bastyan, one of the authors of the research".

The study relied on using sediment-dating techniques to quantify the accumulation of carbon in repopulated areas and the erosion of historic carbon in areas that were not revegetated. No other revegetation project has been monitored this long in all the world, Marbà concludes.

Media Contact

Abel Grau
abel.grau@csic.es
34-915-681-471

 @CSIC

http://www.csic.es 

Abel Grau | EurekAlert!

More articles from Ecology, The Environment and Conservation:

nachricht Litter is present throughout the world’s oceans: 1,220 species affected
27.03.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

nachricht International network connects experimental research in European waters
21.03.2017 | Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Transport of molecular motors into cilia

28.03.2017 | Life Sciences

A novel hybrid UAV that may change the way people operate drones

28.03.2017 | Information Technology

NASA spacecraft investigate clues in radiation belts

28.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>