Publications by authors named "Lucas Mazzei"

Article Synopsis
  • Competition for resources in forest stands can lead to decreased growth and increased mortality, especially in managed versus unmanaged areas.
  • The study evaluated 23 competition indices (CIs) in an eastern Amazon managed forest, utilizing data from 18 monitored plots over 12 years post-logging.
  • The distance-independent Basal Area Larger (BAL) index was found to best explain tree growth and mortality, and larger trees showed greater growth rates, although they had a slightly higher mortality probability due to lower individual densities.
View Article and Find Full Text PDF

Forest biomass is an essential indicator for monitoring the Earth's ecosystems and climate. It is a critical input to greenhouse gas accounting, estimation of carbon losses and forest degradation, assessment of renewable energy potential, and for developing climate change mitigation policies such as REDD+, among others. Wall-to-wall mapping of aboveground biomass (AGB) is now possible with satellite remote sensing (RS).

View Article and Find Full Text PDF

Tropical forests are shifting in species and trait composition, but the main underlying causes remain unclear because of the short temporal scales of most studies. Here, we develop a novel approach by linking functional trait data with 7000 years of forest dynamics from a fossil pollen record of Lake Sauce in the Peruvian Amazon. We evaluate how climate and human disturbances affect community trait composition.

View Article and Find Full Text PDF
Article Synopsis
  • Disturbances from selective logging in the Amazon release over 90 Tg of carbon annually, but this is partially offset by the regrowth of forests.
  • A unique modeling approach utilizing data from 133 forest plots helps forecast carbon recovery across different regions of the Amazon, considering factors like climate, soil, and initial biomass.
  • The study finds that carbon recovery is significantly higher in regions like the Guiana Shield compared to the southern areas, where environmental stress limits regeneration, emphasizing the importance of surviving trees in the recovery process.
View Article and Find Full Text PDF

Background: Managed forests are a major component of tropical landscapes. Production forests as designated by national forest services cover up to 400 million ha, i.e.

View Article and Find Full Text PDF

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 after logging, harvested stands retain much of their tree-biomass carbon and biodiversity. Comparing species richness of various animal taxa among logged and unlogged forests across the tropics, Burivalova et al.

View Article and Find Full Text PDF