A5021315401- Plant Water Relations and Carbon Dynamics
- Ecology and Vegetation Dynamics Studies
- Plant nutrient uptake and metabolism
- Legume Nitrogen Fixing Symbiosis
- Soil Carbon and Nitrogen Dynamics
- Plant and animal studies
- Plant responses to water stress
- Forest ecology and management
- Aluminum toxicity and tolerance in plants and animals
- Plant Stress Responses and Tolerance
- Plant Micronutrient Interactions and Effects
- Species Distribution and Climate Change
- Tree-ring climate responses
- Soil and Unsaturated Flow
- Agronomic Practices and Intercropping Systems
- Rangeland and Wildlife Management
- Plant responses to elevated CO2
- Fire effects on ecosystems
- Pasture and Agricultural Systems
- Conservation, Biodiversity, and Resource Management
- Soil erosion and sediment transport
- Coastal wetland ecosystem dynamics
- Mycorrhizal Fungi and Plant Interactions
- Crop Yield and Soil Fertility
- Plant Diversity and Evolution
The University of Western Australia
2015-2024
Curtin University
2004-2024
Centre d'Écologie Fonctionnelle et Évolutive
2016
Centre National de la Recherche Scientifique
2016
University of Sheffield
2016
University of Copenhagen
2014
Alcoa (Australia)
2009
Staatliches Museum für Naturkunde Stuttgart
2009
Utrecht University
1988-2004
International Center for Tropical Agriculture
1996-2000
Plant functional traits are the features (morphological, physiological, phenological) that represent ecological strategies and determine how plants respond to environmental factors, affect other trophic levels influence ecosystem properties. Variation in plant traits, trait syndromes, has proven useful for tackling many important questions at a range of scales, giving rise demand standardised ways measure ecologically meaningful traits. This line research been among most fruitful avenues...
Leaf dark respiration (Rdark ) is an important yet poorly quantified component of the global carbon cycle. Given this, we analyzed a new database Rdark and associated leaf traits. Data for 899 species were compiled from 100 sites (from Arctic to tropics). Several woody nonwoody plant functional types (PFTs) represented. Mixed-effects models used disentangle sources variation in . Area-based at prevailing average daily growth temperature (T) each site increased only twofold tropics, despite...
Summary A long‐standing research focus in phytology has been to understand how plants allocate leaf epidermal space stomata order achieve an economic balance between the plant's carbon needs and water use. Here, we present a quantitative theoretical framework predict allometric relationships morphological stomatal traits relation gas exchange required allocation of area stomata. Our was derived from first principles diffusion geometry based on hypothesis that selection for higher anatomical...
Tropical montane cloud forests (TMCF) differ from lowland moist in structure (low stature, small and tough leaves, low diversity) functioning productivity, nutrient-cycling rates). To explain these differences, a variety of hypotheses have been proposed, most which are related directly or indirectly to climate, but none provides satisfactory explanation for all typical TMCF traits. The single climatic factor shared by TMCF, the frequent occurrence cloud, has multiple effects, not well...
• The relationship between carboxylate release from roots and the ability of species to utilize phosphorus sparingly soluble forms was studied by comparing Triticum aestivum, Brassica napus, Cicer arietinum, Pisum sativum, Lupinus albus, angustifolius cosentinii. Plants were grown in sand supplied with 40 mg P kg−1 AlPO4, FePO4 or Ca5OH(PO4)3, as KH2PO4; control plants received no P. differed species. sativum C. arietinum did not access AlPO4 despite releasing carboxylates into rhizosphere....
Leaf photosynthesis (A) is limited by mesophyll conductance (gm), which influenced both leaf structure and the environment. Previous studies have indicated that upper bound for gm declines as dry mass per area (LMA, an indicator of structure) increases, extrapolating to zero at a LMA about 240 g m−2. No data exist on its response environment species with values higher than 220 In this study, laboratory measurements gas exchange in vivo chlorophyll fluorescence were used concurrently derive...
ABSTRACT Banksia species (Proteaceae) occur on some of the most phosphorus (P)‐impoverished soils in world. We hypothesized that spp. maximize P‐use efficiency through high photosynthetic efficiency, long leaf lifespan (P residence time), effective P re‐mobilization from senescing leaves, and maximizing seed concentration. Field glasshouse experiments were conducted to quantify nine species. Leaf concentrations for all extremely low (0.14–0.32 mg g −1 DM) compared with other reported...
We measured leaf water relations and structural traits of 20 species from three communities growing along a topographical gradient. Our aim was to assess variation in seasonal responses status tissue physiology between sites among response summer deficit. Species ridge-top heath community showed the greatest reductions pre-dawn potentials (Psi(leaf)) stomatal conductance during summer; valley-floor woodland midslope mallee less these parameters. Heath also displayed greater reduction...
Proteaceae species in south-western Australia occur on phosphorus- (P) impoverished soils. Their leaves contain very low P levels, but have relatively high rates of photosynthesis. We measured ribosomal RNA (rRNA) abundance, soluble protein, activities several enzymes and glucose 6-phosphate (Glc6P) levels expanding mature six their natural habitat. The results were compared with those for Arabidopsis thaliana. Compared A. thaliana, immature contained rRNA, especially plastidic rRNA. showed...
Summary Leaves with stomata on both upper and lower surfaces, termed amphistomatous, are relatively rare compared hypostomatous leaves only the surface. Amphistomaty occurs predominantly in fast‐growing herbaceous annuals slow‐growing perennial shrubs trees. In this paper, we present current understanding hypotheses costs benefits of amphistomaty related to water CO 2 transport contrasting leaf morphologies. First, there is no evidence that amphistomatous species achieve higher stomatal...