A5004948417- Ecology and Vegetation Dynamics Studies
- Plant Diversity and Evolution
- Plant and animal studies
- Plant Water Relations and Carbon Dynamics
- Hydrology and Watershed Management Studies
- Forest ecology and management
- Tree-ring climate responses
Universidade Federal do Oeste do Pará
2023
Abstract Tropical forests face increasing climate risk 1,2 , yet our ability to predict their response change is limited by poor understanding of resistance water stress. Although xylem embolism thresholds (for example, $$\varPsi $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>Ψ</mml:mi> </mml:math> 50 ) and hydraulic safety margins HSM are important predictors drought-induced mortality 3–5 little known about how these vary across Earth’s largest tropical forest. Here,...
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...
Transpiration contributes up to 70% of regional rainfall during the dry season in Amazon through precipitation recycling. But source, spatial distribution transpiration and key plant hydraulic drivers source water remains unclear. Here, we quantify sources across a topographic gradient eastern Amazon, at Tapaj&#243;s National Forest. We leverage embolism resistance data collected on same sites this campaign. asked: i) What is transpiration? And ii) how do depth origin vary gradients...
Abstract Droughts are predicted to increase in both frequency and intensity by the end of 21st century, but ecosystem response is not expected be uniform across landscapes. Here we assess importance hill-to-valley hydrologic gradient shaping vegetation embolism resistance under different rainfall regimes using hydraulic functional traits. We demonstrate that hydrology modulate together tree species sites topographic positions. Although buffered stable access groundwater, valley plants...
This study investigated the possible variations in functional leaf traits of congenetic species Tachigali and Pouteria tree communities under different edaphic conditions savanna forest areas Central Amazon. Healthy, fully expanded leaves woody were collected phytophysiognomies Ombrophilous Forest Amazonian Savanna, both located state Pará, Brazil. In field, for subsequent evaluation hydraulic traits. For analysis anatomical (structural characterization, micromorphometry, histochemistry)...