Jhon del Águila Pasquel
A5036896307- Forest ecology and management
- Ecology and Vegetation Dynamics Studies
- Peatlands and Wetlands Ecology
- Plant Water Relations and Carbon Dynamics
- Conservation, Biodiversity, and Resource Management
- Fire effects on ecosystems
- Coastal wetland ecosystem dynamics
- Plant and animal studies
- Species Distribution and Climate Change
- Wildlife Ecology and Conservation
- Forest Management and Policy
- Tree-ring climate responses
- Remote Sensing and LiDAR Applications
- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Hydrology and Watershed Management Studies
- Environmental Philosophy and Ethics
- Soil Carbon and Nitrogen Dynamics
- Geology and Paleoclimatology Research
- Social Acceptance of Renewable Energy
- Leaf Properties and Growth Measurement
- Plant Taxonomy and Phylogenetics
- Agricultural and Food Production Studies
- Religion, Ecology, and Ethics
- Amazonian Archaeology and Ethnohistory
Universidad Nacional de la Amazonía Peruana
2013-2025
Instituto de Investigaciones de la Amazonía Peruana
2015-2025
University of Arizona
2024
University of Exeter
2022
Michigan Technological University
2016-2019
Creative Commons
2017
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...
Thermal sensitivity of tropical trees A key uncertainty in climate change models is the thermal forests and how this value might influence carbon fluxes. Sullivan et al. measured stocks fluxes permanent forest plots distributed globally. This synthesis plot networks across climatic biogeographic gradients shows that dominated by high daytime temperatures. extreme condition depresses growth rates shortens time resides ecosystem killing under hot, dry conditions. The effect temperature worse...
Significance Tree diversity is fundamental for forest ecosystem stability and services. However, because of limited available data, estimates tree at large geographic domains still rely heavily on published lists species descriptions that are geographically uneven in coverage. These limitations have precluded efforts to generate a global perspective. Here, based ground-sourced database, we estimate the number biome, continental, scales. We estimated richness (≈73,300) ≈14% higher than...
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,...
Abstract The tropical forest carbon sink is known to be drought sensitive, but it unclear which forests are the most vulnerable extreme events. Forests with hotter and drier baseline conditions may protected by prior adaptation, or more because they operate closer physiological limits. Here we report that in South American climates experienced greatest impacts of 2015–2016 El Niño, indicating greater vulnerability temperatures drought. long-term, ground-measured tree-by-tree responses 123...
Understanding the relationship between photosynthesis, net primary productivity and growth in forest ecosystems is key to understanding how these will respond global anthropogenic change, yet linkages among components are rarely explored detail. We provide first comprehensive description of productivity, respiration carbon allocation contrasting lowland Amazonian forests spanning gradients seasonal water deficit soil fertility. Using largest data set assembled date, ten sites three countries...
Summary Why do forest productivity and biomass decline with elevation? To address this question, research to date generally has focused on correlative approaches describing changes in woody growth elevation. We present a novel, mechanistic approach question by quantifying the autotrophic carbon budget 16 plots along 3300 m elevation transect Peru. Low rates at high elevations appear primarily driven low gross primary ( GPP ), little shift either use efficiency CUE ) or allocation of net NPP...
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...
We examined whether variations in photosynthetic capacity are linked to the environment and/or associated leaf traits for tropical moist forests (TMFs) Andes/western Amazon regions of Peru. compared (maximal rate carboxylation Rubisco (Vcmax ), and maximum electron transport (Jmax )), mass, nitrogen (N) phosphorus (P) per unit area (Ma , Na Pa respectively), chlorophyll from 210 species at 18 field sites along a 3300-m elevation gradient. Western blots were used quantify abundance CO2...
Abstract Aim Palms are an iconic, diverse and often abundant component of tropical ecosystems that provide many ecosystem services. Being monocots, tree palms evolutionarily, morphologically physiologically distinct from other trees, these differences have important consequences for services (e.g., carbon sequestration storage) in terms responses to climate change. We quantified global patterns palm relative abundance help improve understanding forests reduce uncertainty about under Location...
Abstract Peatlands are some of the world’s most carbon-dense ecosystems and release substantial quantities greenhouse gases when degraded. However, conserving peatlands in many tropical areas is challenging due to limited knowledge their distribution. To address this, we surveyed soils plant communities Colombia’s eastern lowlands, where few have previously been described. We documented peat >40 cm thick at 51 more than 100 wetlands. use our data update a regional peatland classification,...
Understanding the capacity of forests to adapt climate change is pivotal importance for conservation science, yet this still widely unknown. This knowledge gap particularly acute in high-biodiversity tropical forests. Here, we examined how Americas have shifted community trait composition recent decades as a response changes climate. Based on historical trait-climate relationships, found that, overall, studied functional traits show shifts less than 8% what would be expected given observed...
Abstract The seasonality of solar irradiance and precipitation may regulate seasonal variations in tropical forests carbon cycling. Controversy remains over their importance as drivers dynamics net primary productivity forests. We use ground data from nine lowland Amazonian forest plots collected 3 years to quantify the monthly ( NPP ) leaves, reproductive material, woody fine roots an annual cycle. distinguish between that do not experience substantial moisture stress (“humid sites”) a...
Meteorological extreme events such as El Niño are expected to affect tropical forest net primary production (NPP) and woody growth, but there has been no large-scale empirical validation of this expectation. We collected a large high–temporal resolution dataset (for 1–13 years depending upon location) more than 172 000 stem growth measurements using dendrometer bands from across 14 regions spanning Amazonia, Africa Borneo in order test how much month-to-month variation stand-level adult tree...
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 Peatlands contain a significant fraction of global soil carbon, but how these reservoirs will respond to the changing climate is still relatively unknown. A picture variations in peat organic matter chemistry aid our ability gauge peatland response climate. The goal this research test hypotheses that (a) carbohydrate content, an indicator reactivity, increase with latitude and decrease mean annual temperatures, (b) while aromatic recalcitrance, vary inversely, (c) elevation have...
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Tropical peatlands are globally important carbon reservoirs that play a crucial role in fluxes of atmospheric greenhouse gases. Amazon expected to be large source methane (CH4) emissions, however little is understood about the rates CH4 flux or microorganisms mediate it these environments. Here we studied mineral nutrient gradient across Pastaza-Marañón Basin, largest tropical peatland South America, describe and environmental factors regulate species assemblages methanogenic methanotrophic...
Tropical peatlands are among the most carbon-dense ecosystems on Earth, and their water storage dynamics strongly control these carbon stocks. The hydrological functioning of tropical differs from that northern peatlands, which has not yet been accounted for in global land surface models (LSMs). Here, we integrated peat-specific hydrology modules into a LSM first time, by utilizing peatland-specific model structure adaptation (PEATCLSM) NASA Catchment Land Surface Model (CLSM). We developed...
Abstract Mauritia flexuosa palm swamp, the prevailing Peruvian Amazon peatland ecosystem, is extensively threatened by degradation. The unsustainable practice of cutting whole palms for fruit extraction modifies forest's structure and composition eventually alters peat‐derived greenhouse gas (GHG) emissions. We evaluated spatiotemporal variability soil N 2 O CH 4 fluxes environmental controls along a swamp degradation gradient formed one undegraded site (Intact), moderately degraded (mDeg)...