A5081462529- Forest ecology and management
- Ecology and Vegetation Dynamics Studies
- Conservation, Biodiversity, and Resource Management
- Soil Management and Crop Yield
- Plant Water Relations and Carbon Dynamics
- Agricultural and Food Sciences
- Remote Sensing and LiDAR Applications
- Environmental and biological studies
- Tree Root and Stability Studies
- Forest Biomass Utilization and Management
- Tree-ring climate responses
- Remote Sensing in Agriculture
- Soil Carbon and Nitrogen Dynamics
- Geography and Environmental Studies
- Aeolian processes and effects
- Land Use and Ecosystem Services
- Species Distribution and Climate Change
- Agroforestry and silvopastoral systems
- Fire effects on ecosystems
- Economic and Environmental Valuation
- Leaf Properties and Growth Measurement
- Wildlife-Road Interactions and Conservation
- African Botany and Ecology Studies
- Atmospheric and Environmental Gas Dynamics
- Phytochemistry Medicinal Plant Applications
National Institute of Amazonian Research
2016-2025
Amazon (United States)
2016-2024
Universidade Federal de Sergipe
2022
Universidade Federal do Paraná
2016
Universidade Federal de Mato Grosso
2016
Abstract Most of the planet's diversity is concentrated in tropics, which includes many regions undergoing rapid climate change. Yet, while climate‐induced biodiversity changes are widely documented elsewhere, few studies have addressed this issue for lowland tropical ecosystems. Here we investigate whether floristic and functional composition intact Amazonian forests been changing by evaluating records from 106 long‐term inventory plots spanning 30 years. We analyse three traits that...
The carbon sink capacity of tropical forests is substantially affected by tree mortality. However, the main drivers death remain largely unknown. Here we present a pan-Amazonian assessment how and why trees die, analysing over 120,000 representing > 3800 species from 189 long-term RAINFOR forest plots. While mortality rates vary greatly Amazon-wide, on average are as likely to die standing they broken or uprooted-modes with different ecological consequences. Species-level growth rate single...
Reducing uncertainties in the response of tropical forests to global change requires understanding how intra- and interannual climatic variability selects for different species, community functional composition ecosystem functioning, so that events differing frequency severity can be predicted. Here we present an extensive dataset hydraulic traits dominant species two Amazon with contrasting precipitation regimes - low seasonality forest (LSF) high (HSF) relate them El Niño-Southern...
Abstract There is large uncertainty whether Amazon forests will remain a carbon sink as atmospheric CO 2 increases. Hence, we simulated an old‐growth tropical forest using six versions of four terrestrial models differing in scale vegetation structure and representation biogeochemical (BGC) cycling, all driven with forcing from the preindustrial period to 2100. The were benchmarked against tree inventory eddy covariance data Brazilian site for present‐day predictions. All predicted positive...
Abstract Aim Water availability is the major driver of tropical forest structure and dynamics. Most research has focused on impacts climatic water availability, whereas remarkably little known about influence table depth excess soil processes. Nevertheless, given that plants take up from soil, supply are likely to be modulated by conditions. Location Lowland Amazonian forests. Time period 1971–2019. Methods We used 344 long‐term inventory plots distributed across Amazonia analyse effects...
Abstract Amazon forests account for ~25% of global land biomass and tropical tree species. In these forests, windthrows (i.e., snapped uprooted trees) are a major natural disturbance, but the rates mechanisms recovery not known. To provide predictive framework understanding effects on forest structure functional composition (DBH ≥10 cm), we quantified as function windthrow severity fraction mortality Landsat pixels, ranging from 0%–70%) time since disturbance terra‐firme in Central Amazon....
Wetlands are the most iconic system of Amazon forest, where people, plants, and animals have adapted to flooding seasonality their survival depends on maintenance this rhythmic pulse. However climatic predictably these stunning forests, which house an expressively high biodiversity, carbon storage regulate regional water cycles, has been changing. Over past decades, Amazonian wetland forests facing intense changes in precipitation patterns, including more frequent extreme events. Tree...
Abstract. Tropical forest soils generally have low nutrient availability. Some species exhibit specialized behavior, occurring exclusively in a single soil type, while others are generalists, thriving across different and water table depths. This study assessed the influence of topographic variation on leaf trunk macronutrient carbon amounts tree only one position positions their relationship with stocks. We selected nine positions: three plateau specialists, valley generalists (with four...
Long-term studies of the dynamics managed forests in tropical regions are lacking. This study aimed to evaluate a forest, over 25-year period, that was experimentally logged 1987 and 1988 submitted three different cutting intensities. All trees with diameter at breast height (DBH) ≥ 10 cm have been measured annually since 1990. The logging intensities were applied were: light (T1)-trees harvested DBH 55 cm; medium (T2)-DBH 50 heavy (T3)-DBH 40 cm. Control plots (T0) also monitored. highest...
Illegal selective logging and forest fires occur on a large scale in the northern Brazilian Amazon, contributing to an increase tree mortality reduction carbon stock. A total of 120 plots 0.25 ha (30 ha) were installed transitional ecosystems or ecotones (LOt) between forested shade-loving campinarana (Ld) dense-canopy rainforest, submontane (Ds), National Forest (Flona) Anauá, southern Roraima. Measuring diameters at breast height (DBH ≥ 10 cm) heights 171 dead trees (fallen naturally,...
Abstract Recent research in the central Amazon suggests that wind is a major agent of disturbance, however, mechanistic understanding how may lead to tree mortality Amazonian forests remains unclear. Here we estimated speeds necessary topple trees by linking both static and dynamic versions two speed estimation methods (four total) field data on failure derived from winching study. Static these assumed invariant characteristics as more failed, while updated spacing, leaf area index profiles...
Abstract. Windthrows change forest structure and species composition in central Amazon forests. However, the effects of widespread tree mortality associated with wind disturbances on soil properties have not yet been described this vast region. We investigated short-term (7 years after disturbance) caused by a squall line event from mid-January 2005 carbon stocks concentrations terra firme forest. The stock (averaged over 0–30 cm depth profile) disturbed plots (61.4 ± 8.2 Mg ha−1, mean ±95 %...
Tree growth and survival differ strongly between canopy trees (those directly exposed to overhead light), understory trees. However, the structural complexity of many tropical forests makes it difficult determine positions. The integration remote sensing ground-based data enables this determination measurements how in structure dynamics. Here we analyzed 2 cm resolution RGB imagery collected by a Remotely Piloted Aircraft System (RPAS), also known as drone, together with two decades...
Abstract. Old-growth forests are subject to substantial changes in structure and species composition due the intensification of human activities, gradual climate change extreme weather events. Trees store ca. 90 % total aboveground biomass (AGB) tropical precise tree estimation models crucial for management conservation. In central Amazon, predicting AGB at large spatial scales is a challenging task heterogeneity successional stages, high diversity inherent variations allometry architecture....
With current observations and future projections of more intense frequent droughts in the tropics, understanding impact that extensive dry periods may have on tree ecosystem-level transpiration concurrent carbon uptake has become increasingly important. Here, we investigate paired soil water extraction dynamics an old-growth upland forest central Amazonia during 2018 season. Tree use was assessed via radial patterns sap flow eight dominant canopy trees, each a different species with range...
Introduction The productivity of the Amazon Rainforest is related to climate and soil fertility. However, degrees which these interactions influence multiannual decadal variations in tree diameter growth are still poorly explored. Methods To fill this gap, we used radiocarbon measurements evaluate variation rates over past decades an important hyperdominant species, Eschweilera coriacea (Lecythidaceae), from six sites Brazilian that span a range properties climate. Results Using linear...