A5006217029- Ecology and Vegetation Dynamics Studies
- Plant Water Relations and Carbon Dynamics
- Species Distribution and Climate Change
- Tree-ring climate responses
- Wildlife Ecology and Conservation
- Plant and animal studies
- Invertebrate Taxonomy and Ecology
- Forest ecology and management
- Plant responses to water stress
- Plant Parasitism and Resistance
- Plant responses to elevated CO2
- Hydrology and Drought Analysis
Macquarie University
2014-2019
Vulnerability of the leaf hydraulic pathway to water-stress-induced dysfunction is a key component drought tolerance in plants and may be important defining species' climatic range. However, generality association between vulnerability climate across species sites remains tested. Leaf (P50leaf, water potential inducing 50 % loss function) was measured diverse group 92 woody, mostly evergreen angiosperms from wide range habitats. These new data together with some previously published were...
Low water potentials in xylem can result damaging levels of cavitation, yet little is understood about which hydraulic traits have most influence delaying the onset dysfunction during periods drought. We examined three contributing to longer desiccation times excised shoots 11 species from two sites contrasting aridity: (i) amount released plant tissues per decrease potential (WΨ); (ii) minimum preceding acute stress (defined as P50L; at 50% loss leaf conductance); and (iii) integrated...
Abstract The rate of elongation and thickening individual branches (shoots) varies across plant species. This variation is important for the outcome competition other plant–plant interactions. Here, we compared rates shoot growth 44 species from tropical, warm temperate cool forests eastern Australia. Shoot was found to correlate with a suite traits including potential height species, xylem‐specific conductivity, leaf size, area per xylem cross‐section (LA/XA), twig diameter (at 40 cm...
The structural properties of leaf venation and xylem anatomy strongly influence hydraulics, including the ability leaves to maintain hydraulic function during drought. Here we examined strength links between different traits vulnerability drought (expressed as P50leaf by rehydration kinetics) in a diverse group 26 woody angiosperm species, representing wide range vulnerabilities, from four low-nutrient sites with contrasting rainfall across eastern Australia.For each species measured key...
Close coordination between leaf gas exchange and maximal hydraulic supply has been reported across diverse plant life forms. However, it also suggested that this relationship may become weak or break down completely within the angiosperms. We examined hydraulic, vein, gas-exchange traits a group of 35 evergreen Australian angiosperms, spanning large range in structure habitat. Leaf-specific conductance was calculated from petiole vessel anatomy measured directly using rehydration technique....
Abstract A substantial amount of money has been spent globally on threatened species management. While the number continues to increase, we would expect observe a portion those receiving active management respond positively and recover over time. Management these recovering requires different approach which are declining. In particular, may require monitoring as primary activity, once threats causing their initial decline have managed such that populations stable or increasing. When...
Anthropogenic climate change presents a major threat to all levels of biodiversity – from populations ecosystems. Threatened species and ecological communities are particularly at risk because they generally possess characteristics that increase their vulnerability extinction. Here we review the conservation assessments 414 threatened 108 in state New South Wales (NSW) Australia, explore extinction risk. We found only 13% 24% have identified as threat. Amphibians had highest proportion with...