A5032846592- Soil Carbon and Nitrogen Dynamics
- Ecology and Vegetation Dynamics Studies
- Plant nutrient uptake and metabolism
- Plant Water Relations and Carbon Dynamics
- Mycorrhizal Fungi and Plant Interactions
- Plant and animal studies
- Soil Management and Crop Yield
- Plant responses to elevated CO2
- Legume Nitrogen Fixing Symbiosis
- Tree Root and Stability Studies
- Plant Parasitism and Resistance
- Atmospheric chemistry and aerosols
- Soil erosion and sediment transport
- Plant responses to water stress
- Forest ecology and management
- Forest Ecology and Biodiversity Studies
- Peatlands and Wetlands Ecology
- Agronomic Practices and Intercropping Systems
- Pasture and Agricultural Systems
- Species Distribution and Climate Change
- Fire effects on ecosystems
- Leaf Properties and Growth Measurement
- Invertebrate Taxonomy and Ecology
- Soil and Water Nutrient Dynamics
- Irrigation Practices and Water Management
Centre d'Écologie Fonctionnelle et Évolutive
2015-2025
Centre National de la Recherche Scientifique
2014-2025
Université de Montpellier
2014-2025
École Pratique des Hautes Études
2014-2025
Institut de Recherche pour le Développement
2017-2025
Université Paul-Valéry Montpellier
2014-2020
Canadian Nautical Research Society
2006
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
1995
Physique et Physiologie Intégratives de l'Arbre en Environnement Fluctuant
1995
Although the structure and composition of plant communities is known to influence functioning ecosystems, there as yet no agreement how these should be described from a functional perspective. We tested biomass ratio hypothesis, which postulates that ecosystem properties depend on species traits contribution total community, in successional sere following vineyard abandonment Mediterranean region France. Ecosystem-specific net primary productivity, litter decomposition rate, soil carbon...
Summary The impact of sample preparation, rehydration procedure and time collection on the determination specific leaf area (SLA, ratio to dry mass) matter content (LDMC, mass fresh mature leaves was studied in three wild species growing field, chosen for their contrasting SLA LDMC. Complete achieved 6 h after samples were placed into water, but neither procedures tested – preparation before or temperature applied during had a significant effect final values As expected, water‐saturated...
Collaboration broadens the “root economics space” ranging from “do-it-yourself” to “outsourcing” mycorrhizal partners.
• Background and Aims Leaf thickness plays an important role in leaf plant functioning, relates to a species' strategy of resource acquisition use. As such, it has been widely used for screening purposes crop science community ecology. However, since its measurement is not straightforward, number estimates have proposed. Here, the validity (SLA × LDMC)−1 product tested estimate thickness, where SLA specific area (leaf area/dry mass) LDMC dry matter content mass/fresh mass). are two traits...
Summary The effects of plants on the biosphere, atmosphere and geosphere are key determinants terrestrial ecosystem functioning. However, despite substantial progress made regarding plant belowground components, we still only beginning to explore complex relationships between root traits functions. Drawing literature in physiology, ecophysiology, ecology, agronomy soil science, reviewed 24 aspects functioning their with a number system traits, including architecture, morphology, anatomy,...
Summary Although fine roots are important components of the global carbon cycle, there is limited understanding root structure–function relationships among species. We determined whether respiration rate and decomposability, two key processes driving cycling but always studied separately, varied with morphological chemical traits, in a coordinated way that would demonstrate existence economics spectrum ( RES ). Twelve traits were measured on (diameter ≤ 2 mm) 74 species (31 graminoids 43...
• Specific leaf area (leaf to dry mass ratio), matter content saturated fresh ratio) and nitrogen concentration (LNC) have been proposed as indicators of plant resource use in data bases functional traits. We tested whether species ranking based on these traits was repeatable by studying spatio-temporal variations specific water-saturated leaves (SLASAT LDMCSAT), well LNC, for 57 herbaceous woody (or subsets thereof) growing under the Mediterranean climate southern France. Interseason...
Variation and tradeoffs within among plant traits are increasingly being harnessed by empiricists modelers to understand predict ecosystem processes under changing environmental conditions. While fine roots play an important role in functioning, fine-root underrepresented global trait databases. This has hindered efforts analyze variation link it with function conditions at a scale. Viewpoint addresses the need for centralized database, introduces Fine-Root Ecology Database (FRED,...
• Here, we tested whether root traits associated with resource acquisition and conservation differed between life histories (annuals, perennials) families (Fabaceae, Asteraceae Poaceae). Root topology, morphology, chemistry mycorrhizal colonization were measured on whole systems of 18 field-grown herbaceous species grown harvested in central Argentina. Annuals from perennials several important uptake conservation. They exhibited higher specific length (SRL), nitrogen concentration (RNC) but...
Summary Ecosystem functioning relies heavily on below‐ground processes, which are largely regulated by plant fine‐roots and their functional traits. However, our knowledge of fine‐root trait distribution to date local‐ regional‐scale studies with limited numbers species, growth forms environmental variation. We compiled a world‐wide dataset, featuring 1115 species from contrasting climatic areas, phylogeny test series hypotheses pertaining the influence types, soil climate variables, degree...
Fine-root traits play key roles in ecosystem processes, but the drivers of fine-root trait diversity remain poorly understood. The plant economic spectrum (PES) hypothesis predicts that leaf and root evolved coordination. Mycorrhizal association type, growth form climate may also affect traits. However, extent to which these controls are confounded with phylogenetic structuring remains unclear. Here we compiled information about for > 600 species. Using relatedness, climatic ranges,...
Summary Roots vary in anatomy, morphology and physiology, both spatially (different parts of the same root system) temporally (plastic changes, ageing), suggesting that trait measurements are strongly affected by sampling categories. In this context, it is urgent to clarify functional significance current categories (e.g. fine roots first order, three orders, ≤1 mm or ≤2 mm), establish guidelines for choosing between methods revise ontology account differences traits measured on distinct...
Summary There is a fundamental trade‐off between leaf traits associated with either resource acquisition or conservation. This gradient of trait variation, called the economics spectrum , also applies to fine roots, but whether it consistent for coarse roots at plant community level remains untested. We measured set morphological and chemical root (functional parameters; FP ) in 20 communities located along land‐use intensity gradients across three climatic zones (tropical, mediterranean...
Abstract Motivation Trait data are fundamental to the quantitative description of plant form and function. Although root traits capture key dimensions related responses changing environmental conditions effects on ecosystem processes, they have rarely been included in large‐scale comparative studies global models. For instance, remain absent from nearly all that define spectrum Thus, overcome conceptual methodological roadblocks preventing a widespread integration trait into analyses we...
Abstract Within individuals and/or species of trees, the structure and gas exchange sun‐exposed leaves from outer part canopy have been found to relate sampling height. Across species, such has shown their biochemical composition, but not Why are leaf traits related height within tree across a broader range species? And what components involved in leaf‐level carbon, water nitrogen economies? Plant height, mass per area (LMA) its underlying components, exchange, carbon isotopic discrimination...
ABSTRACT We determined the proximate chemical composition as well construction costs of leaves 27 species, grown at ambient and a twice‐ambient partial pressure atmospheric CO 2 . These species comprised wild agricultural herbaceous plants tree seedlings. Both average responses across range in response were considered. Expressed on total dry weight basis, main change due to was accumulation non‐structural carbohydrates (TNC). To lesser extent, decreases found for organic N compounds...
Summary Plant species composition and community functional structure (i.e. trait at the level) result from a hierarchy of environmental filters that constrain which traits tend to be dominant in given habitat. We quantified variation along natural gradients soil resources using several above‐ below‐ground parameters explored links among these attributes determine whether plant resource economics can applied level Mediterranean rangeland southern France. Limitation by nitrogen, water depth...