This project was funded by NASA as part of the Large Scale Atmosphere-Biosphere Experiment in Amazonia (LBA). Our study used eddy covariance to directly measure the effects of selective logging on the CO2 and energy exchange of an evergreen tropical forest in Brazil. We started flux measurements in June 2000 at the top of a 65-m tower, which extended 10 to 20 m above the surrounding forest. The forest near the tower was relatively undisturbed, and remained so until the 2001 dry season (July to November), when a 1000 ha patch upwind of the tower was selectively logged. The observations prior to the cut provided a baseline characterization of the CO2 and energy exchange by undisturbed forest. The observations following the logging allowed us to quantify the effects of Reduced Impact Logging on tropical forest. Data from the study are available at http://www.ess.uci.edu/~lba/: and also at the ORNL Distributed Active Archive Center for Biogeochemical Dynamics.
Publications:
Reduced impact logging minimally alters tropical rainforest carbon and energy exchange Proceedings of the National Academy of Sciences 108:48, 2011 Miller, S. D.; Goulden, M. L.; Hutyra, L.; Keller, M. A.; Saleska, S. R.; Wofsy, S. C. et al.
Effect of smoke on subcanopy shaded light, canopy temperature, and carbon dioxide uptake in an Amazon rainforest Global Biogeochemical Cycles 24:3, 2010 Doughty, C. E.; Flanner, M. G.; Goulden, M. L.
Are tropical forests near a high temperature threshold? Journal of Geophysical Research (0148-0227) 113:G1, 2008 Doughty, Christopher E.; Goulden, Michael L.
Seasonal drought stress in the Amazon: Reconciling models and observations Journal of Geophysical Research (0148-0227) 113:G1, 2008 Baker, I. T.; Prihodko, L.; Denning, A. S.; Goulden, M.; Miller, S.; da Rocha, H. R.
Seasonal patterns of tropical forest leaf area index and CO2 exchange Journal of Geophysical Research (0148-0227) 113:G1, 2008 Doughty, Christopher E.; Goulden, Michael L.
Effects of selective logging on tropical forest tree growth Journal of Geophysical Research (0148-0227) 113:G1, 2008 Figueira, Adelaine Michela e S.; Miller, Scott D.; de Sousa, Cleilim Albert D.; Menton, Mary C.; Maia, Augusto R.; da Rocha, Humberto R. et al.
Circadian rhythms constrain leaf and canopy gas exchange in an Amazonian forest Geophysical Research Letters (0094-8276) 33:15, 2006 Doughty, Christopher E.; Goulden, Michael L.; Miller, Scott D.; da Rocha, Humberto R.
Nocturnal cold air drainage and pooling in a tropical forest Journal of Geophysical Research-Atmosphere 111:N/A, 2006 Goulden, M. L.; Miller, S. D.; da Rocha, H. R.
BIOMETRIC AND MICROMETEOROLOGICAL MEASUREMENTS OF TROPICAL FOREST CARBON BALANCE Ecological Applications (1051-0761) 14:sp4, 2004 Miller, Scott D.; Goulden, Michael L.; Menton, Mary C.; da Rocha, Humberto R.; de Freitas, Helber C.; Figueira, Adelaine Michela e Silva et al.
Diel and seasonal patterns of tropical forest CO2 exchange Ecological Applications 14:4, 2004 Goulden, N. L.; Miller, S. D.; da Rocha, H. R.; Menton, M. C.; de Freitas, H. C.; Figueria, A. M. E. S. et al.
SEASONALITY OF WATER AND HEAT FLUXES OVER A TROPICAL FOREST IN EASTERN AMAZONIA Ecological Applications (1051-0761) 14:sp4, 2004 da Rocha, Humberto R.; Goulden, Michael L.; Miller, Scott D.; Menton, Mary C.; Pinto, Leandro D. V. O.; de Freitas, Helber C. et al.