Subproject

Carbon dynamics from Andes to Amazon

Tropical Montane Forests are the least studied and most vulnerable to warming climates. This DPhil project investigated the effects of environmental parameters on key ecophysiological processes, carbon fluxes and stocks of an Andean Tropical Montane Forest. Cécile examined the interactions between environmental factors (temperature, rainfall, light) and above and belowground forest carbon dynamics on a transect ranging from 3000m (26.4 ºC) to 220m (12.6 ºC), situated in the Kosñipata valley and Tambopata, Peru.

Cécile completed her D.Phil in 2010. It resulted in a number of publications:

Girardin, C.A.J., Malhi, Y., Salinas, N., Net primary productivity patterns from Andes to Amazon, Global Change Biology, 2010.

Palin O.F., Eggleton P., Malhi Y., Girardin C.A.J., Dávila A.R., Parr C.L. Termite Diversity along an Amazon-Andes Elevational Gradient, Biotropica, 2010.

Girardin, C.A.J., Aragão, L. E. O. C., Huaraca Huasco, W., Malhi, Y., Metcalfe, D., Root dynamics along an elevation gradient in tropical Andean forests, in review, Global Biogeochemical Cycles.

Girardin, C.A.J., Manami, M., Feeley, K., Malhi, Y., Silman, M., Salinas, N., A spatio-temporal investigation of the factors controlling aboveground productivity along an elevation gradient in the Peruvian Andes, in review, Biotropica.

Girardin, C.A.J., Malhi, Y., Aragão, L. E. O. C., Durand, L., Zimmerman, M., A spatio-temporal investigation of the factors controlling soil respiration along an elevation gradient in the Peruvian Andes, in prep.

Where are we working?

Bullet_red - Site Bullet_blue - Plot Bullet_yellow - Field station

Photos and images

Medium_nature
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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  • 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...

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    Greg Goldsmith

    I am a tropical plant physiological ecologist with a particular interest in plant-water relations. My doctoral research, based at the University of California, Berkeley, focused on the impacts of drought...

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    Gregory Asner

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    Cécile Girardin

    I coordinate carbon cycling data for the GEM network. I am an ecosystems scientist focussing on carbon dynamics of tropical forest ecosystems. Following my PhD at Oxford University School of...

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    Sandra Diaz

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    Norma Salinas

    I am a postdoctoral research assistant at the University of Oxford. I am working with plant traits along altitudinal gradients in tropical forests. My research involve many aspects of tropical...

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