Loftets Stora Sal, Ultuna, SLU, Uppsala

Lunch Seminar "Roots and associated fungi drive long-term carbon sequestration in boreal forest"

<p style="text-align: center;">by Karina Clemmensen, PhD, Researcher at Uppsala Biocenter, SLU, Dept. Forest Mycology and Pathology. </p> <p style="text-align: center;"> <img alt="" src="http://www.slu.se/Global/externwebben/forskarskolor/focus-soils-water/FoSW_logo.jpg" /></p>

Boreal forest soils function as a terrestrial net sink in the global carbon cycle. The prevailing dogma has focused on aboveground plant litter as a principal source of soil organic matter. Using 14C bomb-carbon modeling, we show that 50-70% of stored carbon in a chronosequence of boreal forested islands derives from roots and root-associated microorganisms. Fungal biomarkers indicate impaired degradation and preservation of fungal residues in late successional forests. Furthermore, 454-pyrosequencing of molecular barcodes, in conjunction with stable isotope analyses, highlights root-associated fungi as important regulators of ecosystem carbon dynamics. Our results suggest an alternative mechanism for accumulation of organic matter in boreal forests during succession in the long-term absence of disturbance.


Time: 2013-05-02 11:30 - 13:00
City: Uppsala
Location: Loftets Stora Sal, Ultuna, SLU
Organiser: Focus on soils and water, SLU
Last signup date: 29 April 2013
Additional info:

Register for lunch (free of charge) by e-mail to Pia Edfeldt no later than 29th of April. Please inform if you wish vegetarian food or have any food allergies/restrictions. Lunch is served at 11.30 and the seminar starts at 12.00.

Ana Villa, Charlotta Tiberg and Evgheni Ermolaev