Subproject

Carbon dynamics of a Colombian environmental gradient.

Our project is part of the Network for the Monitoring of Forest in Colombia (MOBOC) and it's 2009 RAINFOR covenant. Our goal is to characterize the structure and dynamics of forest along an environmental gradient (precipitation, temperature and soil) in Colombia. We aim to gather information from carbon stocks (above and below ground) and dynamics (mortality, growth and recruitment) of 30 plots of 1 ha located in the Amazon, Choco Andean valleys and the Caribbean Coast. Carbon monitoring was intensified in 12 of these plots, where we quantify fine roots net primary productivity, litterfall and decomposition of biomass to understand how these processes vary along the environmental gradients.

Where are we working?

Bullet_red - Site Bullet_blue - Plot Bullet_yellow - Field station

Photos and images

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Uploaded 6 Feb 2014 by Cécile Girardin. Copyright © 2017.

Congratulations to the GEM team (Chris, Yadvinder & Liana) who co-authored a paper in Nature this week (cover story):

"The paper answers a long-standing question about the net carbon balance of the Amazon forest. It uses aircraft flights throughout the year at four different locations to measure the change in carbon dioxide concentration if air as it passes over the Amazon Basin. The study shows that in wet years and wet seasons the Amazon is a net sink (i.e. absorbs carbon) from the atmosphere, but in dry years and dry seasons it is carbon neutral or a source of carbon. Our main contribution in Oxford was to provide insight from our RAINFOR-GEM intensive monitoring plots across Amazonia, which suggest that the loss of the carbon sink was caused by a reduction in photosynthesis." (Y. Malhi blog, Feb 2014)

Gatti L.V., M. Gloor, J. B. Miller, C. E. Doughty, Y. Malhi, L. G. Domingues, L. S. Basso, A. Martinewski, C. S. C. Correia, V. F. Borges, S. Freitas, R. Braz, L. O. Anderson, H. Rocha, J. Grace, O. L. Phillips & J. Lloyd Drought sensitivity of Amazonian carbon balance revealed by atmospheric measurements, Nature 506, 76–80. Supplementary Info

Download the paper from here: http://is.gd/WZmcSs

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People

  • Thumb_malhi_pic_forest

    Yadvinder Malhi

    I am Professor of Ecosystem Science at Oxford University.
    I lead the Ecosystems Programme at the Environmental Change Institute, with a focus of understanding the functioning of tropical forests and...

  • Thumb_foto_esteban

    Esteban Alvarez

    I´m a PhD student in the Department of Ecology at the Alcalá of Henares University, Spain. Currently working with forest diversity, biomass, and dynamics in complex environmental gradients in Colombia.