1. Rapid tree carbon stock recovery in managed Amazonian forests.

    Current Biology 25(18):R787 (2015) PMID 26394096

    While around 20% of the Amazonian forest has been cleared for pastures and agriculture, one fourth of the remaining forest is dedicated to wood production. Most of these production forests have been or will be selectively harvested for commercial timber, but recent studies show that even soon af...
  2. Landscape fragmentation, severe drought, and the new Amazon forest fire regime.

    Ecological Applications 25(6):1493 (2015) PMID 26552259

    Changes in weather and land use are transforming the spatial and temporal characteristics of fire regimes in Amazonia, with important effects on the functioning of dense (i.e., closed-canopy), open-canopy, and transitional forests across the Basin. To quantify, document, and describe the charact...
  3. Tyranny of trees in grassy biomes.

    Science 347(6221):484 (2015) PMID 25635078

  4. Outer bark thickness decreases more with height on stems of fire-resistant than fire-sensitive Floridian oaks (Quercus spp.; Fagaceae).

    American Journal of Botany 101(12):2183 (2014) PMID 25480714

    • In ecosystems maintained by low-intensity surface fires, tree bark thickness is a determinant of fire-survival because it protects underlying tissues from heat damage. However, it has been unclear whether relatively thick bark i S: maintained at all heights or only near the ground where damage...
  5. Abrupt increases in Amazonian tree mortality due to drought-fire interactions.

    PNAS 111(17):6347 (2014) PMID 24733937 PMCID PMC4035969

    Interactions between climate and land-use change may drive widespread degradation of Amazonian forests. High-intensity fires associated with extreme weather events could accelerate this degradation by abruptly increasing tree mortality, but this process remains poorly understood. Here we present...
  6. Carbon emissions performance of commercial logging in East Kalimantan, Indonesia.

    Global Change Biology 20(3):923 (2014) PMID 24022913

    Adoption of reduced-impact logging (RIL) methods could reduce CO2 emissions by 30-50% across at least 20% of remaining tropical forests. We developed two cost effective and robust indices for comparing the climate benefits (reduced CO2 emissions) due to RIL. The indices correct for variability i...
  7. Testing the Amazon savannization hypothesis: fire effects on invasion of a neotropical forest by native cerrado and exotic pasture grasses.

    Philosophical Transactions of the Royal Society... 368(1619):20120427 (2013) PMID 23610179 PMCID PMC3638439

    Changes in climate and land use that interact synergistically to increase fire frequencies and intensities in tropical regions are predicted to drive forests to new grass-dominated stable states. To reveal the mechanisms for such a transition, we established 50 ha plots in a transitional forest ...
  8. Certified and uncertified logging concessions compared in Gabon: changes in stand structure, tree species, and biomass.

    Environmental Management 51(3):524 (2013) PMID 23277438

    Forest management certification is assumed to promote sustainable forest management, but there is little field-based evidence to support this claim. To help fill this gap, we compared a Forest Stewardship Council (FSC)-certified with an adjacent uncertified, conventionally logged concession (CL)...
  9. Helping curb tropical forest degradation by linking REDD+ with other conservation interventions: a view from the forest

    Current Opinion in Environmental Sustainability 4(6):670 (2012)

    Highlights ► Reducing GHG emissions from forest degradation requires concerted policies and institutions. ► Understanding forest degradation drivers is needed to design efficient REDD+ programs. ► Likewise learning from past interventions will promote effective REDD+ design. ...
  10. Improved tropical forest management for carbon retention.

    PLoS Biology 6(7):e166 (2008) PMID 18630991 PMCID PMC2459208

  11. Nitrogen fertilizer and gender effects on the secondary metabolism of yaupon, a caffeine-containing North American holly.

    Oecologia 151(1):1 (2007) PMID 17048011

    Yaupon (Ilex vomitoria) is a caffeine-containing dioecious shrub native to the southeastern United States that was historically brewed into a stimulating beverage. We tested predictions of the carbon/nutrient balance (CNB) hypothesis by determining whether nitrogen availability and gender influe...
  12. Effects of lianas on growth and regeneration ofPrioria copaiferain Darien, Panama

    Forest Ecology and Management 190(1):99 (2004)

    We conducted a silvicultural experiment to evaluate the effects of lianas on the stem diameter growth of Prioria copaifera (cativo), a valuable timber tree in Panama. Dalbergia brownei, a leguminous liana, is abundant in many riverine P. copaifera-dominated swamp forest...
  13. Tree mortality and vine proliferation following a wildfire in a subhumid tropical forest in eastern Bolivia

    Forest Ecology and Management 116(1):247 (1999)

    In 1994, 1×10 6 ha of subhumid forest in eastern Bolivia burned in an uncontrolled wildfire; the objective of this study was to measure tree and liana mortality a year after this fire. About 60% of 500 trees sampled were either killed or damaged by the fire. Proportionally more ...