A5054935810- Ecology and Vegetation Dynamics Studies
- Conservation, Biodiversity, and Resource Management
- Forest ecology and management
- Plant Water Relations and Carbon Dynamics
- Forest Management and Policy
- Economic and Environmental Valuation
- Plant responses to elevated CO2
- Plant and animal studies
- Soil Carbon and Nitrogen Dynamics
- Plant Parasitism and Resistance
- Species Distribution and Climate Change
- Land Use and Ecosystem Services
- Agriculture, Land Use, Rural Development
- Agroforestry and silvopastoral systems
- Seedling growth and survival studies
- Climate Change Policy and Economics
- Forest Ecology and Biodiversity Studies
- Atmospheric and Environmental Gas Dynamics
- Plant nutrient uptake and metabolism
- Plant Stress Responses and Tolerance
- Atmospheric chemistry and aerosols
- Tree Root and Stability Studies
- Neuroscience of respiration and sleep
- Weed Control and Herbicide Applications
- Neonatal Respiratory Health Research
McGill University
2015-2024
Smithsonian Tropical Research Institute
2015-2024
Western University
2018
University of Saskatchewan
2018
University of British Columbia
2018
Ecological Society of America
2017
Theodore Roosevelt High School
2017
Université Laval
2001-2014
Panama Canal Authority
2010
University of Basel
2005
Physiological ecologists often analyze the responses of physiological or biochemical traits to environmental factors such as temperature, irradiance, water potential, concentrations CO2, O2, and inorganic nutrients. The data for a response curve typically are gathered by sequential sampling same plant animal, their analysis should explicitly allow this repeated—measures design. Unfortunately, statistical curves in ecology generally has either been ignored incorrectly done. In an effort...
After making a case for the prevalence of nonnormality, this paper attempts to introduce some distribution—free and robust techniques ecologists offer critical appraisal potential advantages drawbacks these methods. The presented fall into two distinct categories, methods based on ranks "computer—intensive" techniques. Distribution—free rank tests have features that can be recommended. They free practitioner from concern about underlying distribution are very outliers. If observations is...
Abstract As of 2020, the world has an estimated 290 million ha planted forests and this number is continuously increasing. Of these, 131 are monospecific under intensive management. Although important in providing timber, they harbor less biodiversity potentially more susceptible to disturbances than natural or diverse forests. Here, we point out increasing scientific evidence for increased resilience ecosystem service provision functionally species (hereafter referred as forests) compared...
The area of forest plantations is increasing worldwide helping to meet timber demand and protect natural forests. However, with global change, monospecific are increasingly vulnerable abiotic biotic disturbances. As an adaption measure we need move that more diverse in genotypes, species, structure, a design underpinned by science. TreeDivNet, network tree diversity experiments, responds this assessing the advantages disadvantages mixed species plantations. currently consists 18 distributed...
Summary Plant functional traits, in particular specific leaf area ( SLA ), wood density and seed mass, are often good predictors of individual tree growth rates within communities. Individuals species with high , low small seeds tend to have faster rates. If community‐level relationships between traits general predictive value, then similar should also be observed analyses that integrate across taxa, biogeographic regions environments. Such global consistency would imply could serve as...
Understanding how plants are constructed—i.e., key size dimensions and the amount of mass invested in different tissues varies among individuals—is essential for modeling plant growth, carbon stocks, energy fluxes terrestrial biosphere. Allocation patterns can differ through ontogeny, but also coexisting species adapted to environments. While a variety models dealing with biomass allocation exist, we lack synthetic understanding underlying processes. This is partly due suitable data sets...
Abstract Plant diversity effects on community productivity often increase over time. Whether the strengthening of is caused by temporal shifts in species-level overyielding (i.e., higher diverse communities compared with monocultures) remains unclear. Here, using data from 65 grassland and forest biodiversity experiments, we show that strength at scale underpinned changes species yield. These trends are shaped plant ecological strategies, which can be quantitatively delimited functional...
Changes in land use, habitat fragmentation, nutrient enrichment, and environmental stress often lead to reduced plant diversity ecosystems. However, it remains controversial whether these reductions will affect energy flow cycling. Diversity has two components: species richness, or the number of a given area, evenness, how well distributed abundance biomass is among within community. We experimentally varied evenness identity dominant an old field Quebec test productivity would increase with...
We report data on leaf litter production and decomposition from a manipulative biodiversity experiment with trees in tropical Panama, which has been designed to explore the relationship between tree diversity ecosystem functioning. A total of 24 plots (2025 m 2 ) were established 2001 using six native species, 1‐, 3‐, 6‐species mixtures. estimated during dry season 2005 traps; was assessed bag approach following wet season. Litter course highly variable among species. Tree significantly...
Abstract We developed an analytical method that quantifies the relative contributions of mortality and individual growth to ecosystem function analysed results from first biodiversity experiment conducted in a tropical tree plantation. In Sardinilla, central Panama, over 5000 seedlings were planted monoculture mixed‐species plots. After 5 years growth, plots yielded, on average, 30–58% higher summed basal area than did monocultures. Simulation models revealed increased yield was due mostly...
• Linking tree diversity to carbon storage can provide further motivation conserve tropical forests and design carbon-enriched plantations. Here, we examine the role of functional traits in determining a mixed-species plantation natural forest Panama. We used species richness, trait diversity, dominance predict across these two forests. Then compared ranking based on wood density, maximum diameter, height, leaf mass per area (LMA) between sites reveal how values changed different Increased...
High fidelity carbon mapping has the potential to greatly advance national resource management and encourage international action toward climate change mitigation. However, inventories based on field plots alone cannot capture heterogeneity of stocks, thus remote sensing-assisted approaches are critically important at regional global scales. We advanced a high-resolution, national-scale approach applied Republic Panama – one first UN REDD + partner countries. Integrating measurements...
A plantation of native trees was established in Panama 2001 to study the relationship between biodiversity and ecosystem functioning. Five years later, mixed‐species plots had experienced enhanced tree growth compared with monocultures. Searching for underlying mechanisms, we developed a neighborhood model isolating size identity effects. We found that neighbors is, by far, largest source variation individual‐tree diameter height. Size‐asymmetric competition appears as structuring factor...
Abstract There is increasing evidence that mixed‐species forests can provide multiple ecosystem services at a higher level than their monospecific counterparts. However, most studies concerning tree diversity and functioning relationships use data from forest inventories (under noncontrolled conditions) or very young plantation experiments. Here, we investigated temporal dynamics of diversity–productivity diversity–stability in the oldest tropical experiment. Sardinilla was established...
Summary 1. Tree plantations play an important role in meeting the growing demand for wood, but there is concern about their high rates of water use. Recent approaches to reforestation tropics involve establishment multispecies plantations, few studies have compared use mixed vs. monospecific stands. 2. We hypothesized that tree species diversity enhances stand transpiration. were estimated monocultures ( n = 5), two‐species mixtures 3), three‐species 3) and five‐species 4). Sap flux...
Although decades of research suggest that higher species richness improves ecosystem functioning and stability, planted forests are predominantly monocultures. To determine whether diversification plantations would enhance aboveground carbon storage, we systematically reviewed over 11,360 publications, acquired data from a global network tree diversity experiments. We compiled maximum dataset 79 monoculture to mixed comparisons 21 sites with all variables needed for meta-analysis. assessed...
Abstract Enhancing tree diversity may be important to fostering resilience drought‐related climate extremes. So far, little attention has been given whether can increase the survival of trees and reduce its variability in young forest plantations. We conducted an analysis seedling sapling from 34 globally distributed experiments (363,167 trees, 168 species, 3744 plots, 7 biomes) answer two questions: (1) Do drought alter mean plot‐level survival, with higher less variable as increases? (2)...
Trunk carbon (C) concentrations were assessed for 32 species of tropical trees to understand sources variation. The main effect accounted 38% the total variance in C concentration (p < 0.0001). Tectona grandis demonstrated greatest (49.4%), while Ormosia macrocalyx displayed lowest (44.4%). We also observed significant differences among sampling sites (F = 2.2, p 0.02). For three sampled both plantations and natural forests, forest individuals had significantly higher (Dipteryx...
Summary Over 5000 trees were grown in plots of differing diversity levels (1, 3 and 6 species) a plantation established Panama. Four five years after establishment, we analysed parameters related to the productivity this tropical (tree survival, height biomass as well plot basal area) test for presence biodiversity effects. The relative importance environmental heterogeneity (such soil, topography, drainage) on tree growth mortality was determined using partial redundancy analysis....