Competition influences tree growth, but not mortality, in Amazonia and tropical Africa forests

Posted Posted in Africa, Amazonia, Carbon sequestration, Climate change, Drought, Forest dynamics, Forest structure, Tree growth, Tree mortality

Competition among trees is an important driver of community structure and dynamics in tropical forests. Neighboring trees may impact an individual tree’s growth rate and probability of mortality, but large-scale geographic and environmental variation in these competitive effects has yet to be evaluated across the tropical forest biome.


Fire effects on understory forest regeneration in southern Amazonia

Posted Posted in Biodiversity, Carbon sequestration, Fire, Forest degradation, Forest regrowth, Forest structure

There has been a large increase in deforestation and wildfire in Amazonia over recent years. Fire in tropical forests increases tree mortality, degrades forest structure, and reduces carbon stocks (Figure 1). Remote sensing now permits a rapid and accurate assessment of the location and extent of fires. On the ground and in forests, however, there are significant challenges to estimating the actual effects of fire on forests across a region the size of Europe.


Using charcoal to improve the understanding of fire behaviour in different biomes

Posted Posted in Carbon sequestration, Fire, Forest degradation, Forest management, Forest regrowth, Policy

New research in Geography at the University of Exeter is developing a charcoal reflectance methodology into a novel metric with which to assess fire severity and the amount of energy that has been delivered across burned areas in the UK, USA and Brazilian Amazon.