A5089647680- Plant Water Relations and Carbon Dynamics
- Plant responses to elevated CO2
- Tree-ring climate responses
- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Forest ecology and management
- Coastal wetland ecosystem dynamics
- Heavy metals in environment
- Wildlife Ecology and Conservation
- Marine animal studies overview
- Metabolomics and Mass Spectrometry Studies
- Plant responses to water stress
- Identification and Quantification in Food
- Geology and Paleoclimatology Research
- Plant and animal studies
- Atmospheric and Environmental Gas Dynamics
Western Sydney University
2015-2024
University of Newcastle Australia
2019
University of Wollongong
2015
University of Gothenburg
2015
The University of Sydney
2015
Abstract Heatwaves are likely to increase in frequency and intensity with climate change, which may impair tree function forest C uptake. However, we have little information regarding the impact of extreme heatwaves on physiological performance large trees field. Here, grew Eucalyptus parramattensis for 1 year experimental warming (+3°C) a field setting, until they were greater than 6 m tall. We withheld irrigation month dry surface soils then implemented an heatwave treatment 4 consecutive...
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...
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...
Understanding physiological acclimation of photosynthesis and respiration is important in elucidating the metabolic performance trees a changing climate. Does to climate warming mirror seasonal temperature changes? We grew Eucalyptus tereticornis field for 14 months inside 9-m tall whole-tree chambers tracking ambient air (Tair ) or Tair + 3°C (i.e. 'warmed'). measured light- CO2 -saturated net (Amax night-time dark (R) each month at 25°C quantify acclimation. Tree growth was measured, leaf...
Summary The sensitivity of photosynthetic metabolism to temperature has been identified as a key uncertainty for projecting the magnitude terrestrial feedback on future climate change. While responses capacities have comparatively well investigated in temperate species, tropical tree species remain unexplored. We compared seedlings native cold‐adapted montane rainforest with those exotic warm‐adapted plantation all growing an intermediate common garden Rwanda. Leaf gas exchange carbon...
Understanding forest tree responses to climate warming and heatwaves is important for predicting changes in species diversity, C uptake, vegetation-climate interactions. Yet, differences heatwave tolerance their plasticity growth temperature remain poorly understood. In this study, populations of four Eucalyptus species, two with large range sizes comparatively small sizes, were grown under treatments (cool warm) before being exposed an equivalent experimental heatwave. We tested whether the...
Short-term acclimation and long-term adaptation represent two ways in which forest trees can respond to changes temperature. Yet, the relative contribution of thermal tree physiological responses temperature remains poorly understood. Here, we grew cool-origin warm-origin populations a widespread broad-leaved evergreen species (Corymbia calophylla (Lindl.) K.D.Hill & L.A.S.Johnson) from Mediterranean climate southwestern Australia under growth temperatures representative cool- warm-edge...
Understanding how tree growth is affected by rising temperature a key to predicting the fate of forests in future warmer climates. Increasing has direct effects on plant physiology, but there are also indirect increased water limitation because evaporative demand increases with many systems. In this study, we experimentally resolved and response photosynthesis widely distributed species Eucalyptus tereticornis. We grew E. tereticornis an array six temperatures from 18 35.5°C, spanning...
Abstract Impacts of climate warming depend on the degree to which plants are constrained by adaptation their climate‐of‐origin or exhibit broad climatic suitability. We grew cool‐origin, central and warm‐origin provenances Eucalyptus tereticornis in an array common temperature environments from 18 35.5°C determine if this widely distributed tree species consists geographically contrasting with differentiated narrow thermal niches, share a niche. The responses photosynthesis, respiration,...
Summary Thermoregulation of leaf temperature ( T ) may foster metabolic homeostasis in plants, but the degree to which is moderated, and under what environmental contexts, a topic debate. Isotopic studies inferred photosynthetic carbon assimilation be constant value c . 20°C; by contrast, biophysical theory suggests strong dependence on drivers. Can this apparent disparity reconciled? We continuously measured whole‐crown net CO 2 uptake for Eucalyptus parramattensis trees growing field...
Contemporary climate change will push many tree species into conditions that are outside their current envelopes. Using the Eucalyptus genus as a model, we addressed whether with narrower geographical distributions show constrained ability to cope warming relative wider distributions, and this differs among from tropical temperate climates. We grew seedlings of widely narrowly distributed Australia in glasshouse under two temperature regimes: summer at seed origin +3.5°C. measured physical...
A survey of the spotted-tailed quoll (Dasyurus maculatus) was conducted in Watagan Mountains New South Wales using baited remote cameras. Nine individuals were detected, which seven occurred at meat-baited sites and two with a general mammal bait. This confirms expectation that meat-based bait increases ability to detect this species
Abstract Background and Aims Tropical forests exchange more carbon dioxide (CO2) with the atmosphere than any other terrestrial biome. Yet, uncertainty in projected balance over next century is roughly three-times greater for tropics ecosystems. Our limited knowledge of tropical plant physiological responses, including photosynthetic, to climate change a substantial source our ability forecast global sink. Methods We used meta-analytic approach, focusing on photosynthetic temperature address...