A5114375250- Plant Water Relations and Carbon Dynamics
- Plant responses to elevated CO2
- Ecology and Vegetation Dynamics Studies
- Tree-ring climate responses
- Forest ecology and management
- Soil Carbon and Nitrogen Dynamics
- Atmospheric chemistry and aerosols
- Climate variability and models
- Atmospheric and Environmental Gas Dynamics
- Fire effects on ecosystems
- Plant and animal studies
- Seedling growth and survival studies
- Leaf Properties and Growth Measurement
- Peatlands and Wetlands Ecology
- Plant Parasitism and Resistance
- Plant Diversity and Evolution
- Photosynthetic Processes and Mechanisms
- Geology and Paleoclimatology Research
- Plant nutrient uptake and metabolism
- Soil and Water Nutrient Dynamics
- Horticultural and Viticultural Research
- Plant Physiology and Cultivation Studies
- Plant-Derived Bioactive Compounds
- Forest Management and Policy
- Plant Ecology and Soil Science
Western Sydney University
2016-2025
Western University
2021
University of Michigan
2001-2011
Duke University
1996-2006
University of Minnesota
1995-2004
University of Nebraska–Lincoln
2004
University of Washington
2004
Michigan Department of Natural Resources
2002
Brookhaven National Laboratory
1995-2001
St Nicholas Hospital
2001
Despite striking differences in climate, soils, and evolutionary history among diverse biomes ranging from tropical temperate forests to alpine tundra desert, we found similar interspecific relationships leaf structure function plant growth all biomes. Our results thus demonstrate convergent evolution global generality functioning, despite the enormous diversity of species For 280 two data sets, that potential carbon gain (photosynthesis) loss (respiration) increase proportion with...
Variation in leaf life—span has long been considered of ecological significance.Despite this, quantitative evaluation the relationships between and other plant ecosystem characteristics rare. In this paper we ask whether is related to leaf, plant, stand traits species from diverse ecosystems biomes. We also examine interaction their relation productivity patterns. Among all species, both mass— (A m a s ) area—based r e maximum net photosynthesis decreased with increasing life—span, but...
Convergence in interspecific leaf trait relationships across diverse taxonomic groups and biomes would have important evolutionary ecological implications. Such convergence has been hypothesized to result from trade-offs that limit the combination of plant traits for any species. Here we address this issue by testing biome differences slope intercept among traits: longevity, net photosynthetic capacity (Amax), diffusive conductance (Gs), specific area (SLA), nitrogen (N) status, more than...
Models of vegetation function are widely used to predict the effects climate change on carbon, water and nutrient cycles terrestrial ecosystems, their feedbacks climate. Stomatal conductance, process that governs plant use carbon uptake, is fundamental such models. In this paper, we reconcile two long-standing theories stomatal conductance. The empirical approach, which most commonly in models, phenomenological, based experimental observations behaviour response environmental conditions....
Forests exchange large amounts of CO 2 with the atmosphere and can influence be influenced by atmospheric . There has been a recent proliferation literature on effects forest trees. More than 300 studies trees five different continents have published in last years. These include an increasing number field long‐term focus involving ×stress or environment interactions. The data elevated indicate potential for persistent enhancement tree growth several years, although only relevant datasets...
Summary Results from 16 free‐air CO 2 enrichment (FACE) sites representing four different global vegetation types indicate that only some early predictions of the effects increasing concentration (elevated [CO ]) on plant and ecosystem processes are well supported. Predictions for leaf assimilation (A net ) generally fit our understanding limitations to photosynthesis, FACE experiments concurrent enhancement photosynthesis partial downregulation. In addition, most herbaceous species had...
1. Net photosynthetic capacity ( A max , defined as light‐saturated net photosynthesis under near optimal ambient environmental conditions) of mature leaves often depends on the level leaf nitrogen N ), but an assortment relationships between these variables has been observed in studies diverse plant species. Variation structure identified important factor associated with differences area‐ and mass‐based expressions – relationship. In this paper we test hypothesis that structure, quantified...
Non-photosynthetic, or heterotrophic, tissues in C3 plants tend to be enriched 13C compared with the leaves that supply them photosynthate. This isotopic pattern has been observed for woody stems, roots, seeds and fruits, emerging leaves, parasitic incapable of net CO2 fixation. Unlike plants, roots herbaceous C4 are generally not 13C-enriched leaves. We review six hypotheses aimed at explaining this plants: (1) variation biochemical composition heterotrophic leaves; (2) seasonal separation...
Predicted responses of transpiration to elevated atmospheric CO2 concentration (eCO2 ) are highly variable amongst process-based models. To better understand and constrain this variability models, we conducted an intercomparison 11 ecosystem models applied data from two forest free-air enrichment (FACE) experiments at Duke University Oak Ridge National Laboratory. We analysed model structures identify the key underlying assumptions causing differences in predictions canopy water use...
Abstract Aim The influence of soil properties on photosynthetic traits in higher plants is poorly quantified comparison with that climate. We address this situation by quantifying the unique and joint contributions to global leaf‐trait variation from soils Location Terrestrial ecosystems world‐wide. Methods Using a trait dataset comprising 1509 species 288 sites, climate data derived datasets, we effects 20 26 variables light‐saturated rate ( A area ), stomatal conductance g s leaf nitrogen...
Summary The temperature response of photosynthesis is one the key factors determining predicted responses to warming in global vegetation models ( GVM s). may vary geographically, owing genetic adaptation climate, and temporally, as a result acclimation changes ambient temperature. Our goal was develop robust quantitative model representing photosynthetic responses. We quantified modelled mechanisms responsible for using dataset CO 2 curves, including data from 141 C 3 species tropical...
Summary The first generation of forest free‐air CO 2 enrichment ( FACE ) experiments has successfully provided deeper understanding about how forests respond to an increasing concentration in the atmosphere. Located aggrading stands temperate zone, they have a strong foundation for testing critical assumptions terrestrial biosphere models that are being used project future interactions between productivity and atmosphere, despite limited inference space these with regards range global...