Navigation Links
Industrialization weakens important carbon sink
Date:11/29/2011

Australian scientists have reconstructed the past six thousand years in estuary sedimentation records to look for changes in plant and algae abundance. Their findings, published in Global Change Biology, show an increase in microalgae relative to seagrass in the past 60 years. This shift could diminish the ability of estuaries, which are natural global carbon sinks, to mitigate climate change.

According to Dr. Peter Macreadie, University of Technology, Sydney Chancellor's Postdoctoral Research Fellow, "We have effectively gone back in time and monitored carbon capture and storage by coastal ecosystems, finding a 100-fold weakening in the ability of coastal ecosystems to sequester carbon since the time of European settlement. This severely hampered the ability of nature to reset the planet's thermostat."

Scientists collected cores, samples of earth, from sites within and around Botany Bay, Sydney. A chronology for the cores was determined using radiocarbon dating. Changes in plant and algae composition over time were then determined according to the change in the isotopic ratio of the organic matter in the sediment.

The team's analysis suggests that the relative reduction in seagrass and increase in microalgae coincided with a time of rapid industrial expansion and increased nitrogen deposition. These findings are critical because plants such as seagrass have a relatively large carbon sink capacity, which plays a critical role in mitigating climate change.

"Unfortunately, this outcome is common to urbanized estuaries throughout the world, therefore the study adds further support for the inclusion of Blue Carbon habitats (seagrasses, saltmarshes, and mangroves) in greenhouse gas abatement schemes," said Dr. Macreadie.

This research demonstrates that human activities have weakened the sink capacity of Botany Bay, and this is likely to occur in other coastal ecosystems.


'/>"/>

Contact: Rhea Kressman
gcb@life.illinois.edu
217-333-9651
Wiley-Blackwell
Source:Eurekalert  

Page: 1

Related biology news :

1. Diabetes weakens your bones
2. Structures of important plant viruses determined
3. Important new hair-loss gene discovered
4. The Camille & Henry Dreyfus Foundation to host important symposium on chemistry and the environment
5. Mysterious microbe may play important role in ocean ecology
6. Mysterious microbe plays important role in ocean ecology
7. Alpine rivers hold important clues for preserving biodiversity and coping with climate change
8. New research shows how gene function drives natural selection in important class of genetic elements
9. NC State study finds genes important to sleep
10. Cleft lip and palate: Genes more important than thought?
11. Greatest thing since sliced bread: New data offer important clues toward improving wheat yields
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Industrialization weakens important carbon sink
(Date:3/21/2016)... -- Unique technology combines v ...   Xura, Inc. (NASDAQ: ... communications services, today announced it is working alongside SpeechPro ... particularly those in the Financial Services Sector, the ability ... a mobile app, alongside, and in combination with, traditional ...
(Date:3/15/2016)... 15, 2016 Yissum Research Development Company ... company of the Hebrew University, announced today the formation ... technology of various human biological indicators. Neteera Technologies has ... from private investors. ... detection of electromagnetic emissions from sweat ducts, enables reliable ...
(Date:3/11/2016)... , March 11, 2016 ... new market research report "Image Recognition Market by Technology ... (Marketing and Advertising), by Deployment Type (On-Premises and Cloud), ... To 2022", published by MarketsandMarkets, the global market is ... to USD 29.98 Billion by 2020, at a CAGR ...
Breaking Biology News(10 mins):
(Date:5/26/2016)... (PRWEB) , ... May 26, 2016 , ... ... manufacturing company, today announced several positive developments that position the Company for the ... result of the transaction, Craig F. Kinghorn has been appointed Chairman of the ...
(Date:5/25/2016)... ... 2016 , ... Founder of the Fitzmaurice Hand Institute in ... of the hand by the National Board of Physicians and Surgeons, as of ... in his pursuit of providing the most comprehensive, effective treatment for his patients, ...
(Date:5/25/2016)... ... May 25, 2016 , ... Biohaven Pharmaceutical Holding Company Ltd. ... the company’s orphan drug designation request covering BHV-4157 for the treatment of Spinocerebellar ... FDA. , Spinocerebellar ataxia is a rare, debilitating neurodegenerative disorder that is ...
(Date:5/23/2016)... ... ... need for blood donations in South Texas and across the nation is growing. , But ... blood donations are on the decline. In fact, donations across the country are at their ... Texas in the last four years alone. , There is no substitute for blood. , ...
Breaking Biology Technology: