Brendan Choat
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View article: Drought, thermal response and climate-patterning in cuticular conductance of the widespread C4 grass, <i>Themeda triandra</i>
Drought, thermal response and climate-patterning in cuticular conductance of the widespread C4 grass, <i>Themeda triandra</i> Open
Background and Aims : Grasslands underpin global biodiversity, carbon storage, and ecosystem resilience, yet are increasingly threatened by rising temperatures and water scarcity. Understanding how key physiological traits respond to droug…
View article: A global map of wood density
A global map of wood density Open
Wood density influences how quickly woody plants grow, how long they live and how much carbon they store, yet its global variation remains poorly mapped. Here we combined 109,626 wood density measurements from 16,829 species with 300,949 v…
View article: Beyond species means – the intraspecific contribution to global wood density variation
Beyond species means – the intraspecific contribution to global wood density variation Open
Wood density is central for estimating vegetation carbon storage and a plant functional trait of great ecological and evolutionary importance. However, the global extent of wood density variation is unclear, especially at the intraspecific…
View article: Adaptation in Wood Anatomical Traits to Temperature and Precipitation—A Common Garden Study
Adaptation in Wood Anatomical Traits to Temperature and Precipitation—A Common Garden Study Open
Indisputably, temperature and precipitation are key environmental variables driving plant trait variation and shaping plant ecological strategies. However, it is challenging to ascertain their relative influences because site temperature a…
View article: Hydraulic traits are coordinated but decoupled from carbon traits in herbaceous species
Hydraulic traits are coordinated but decoupled from carbon traits in herbaceous species Open
Plant hydraulic traits primarily define the water regulation strategy, thus enabling a better understanding of vegetation structure, function and dynamics under varying hydro‐environments. Despite being intensively documented in woody spec…
View article: Impacts of the 2019–2020 Black Summer Drought on Eastern Australian Forests
Impacts of the 2019–2020 Black Summer Drought on Eastern Australian Forests Open
Droughts present a significant global challenge, particularly to forest ecosystems in regions such as eastern New South Wales, Australia, which is known for its dry climate and frequent, intense droughts. Recent studies have indicated a no…
View article: Foliar Water Uptake Supports Water Potential Recovery but Does Not Affect Xylem Sap Composition in Two Salt‐Secreting Mangroves
Foliar Water Uptake Supports Water Potential Recovery but Does Not Affect Xylem Sap Composition in Two Salt‐Secreting Mangroves Open
Mangroves are highly salt‐tolerant species, which live in saline intertidal environments, but rely on alternative, less saline water to maintain hydraulic integrity and plant productivity. Foliar water uptake (FWU) is thought to assist in …
View article: Out on a Limb: Testing the Hydraulic Vulnerability Segmentation Hypothesis in Trees Across Multiple Ecosystems
Out on a Limb: Testing the Hydraulic Vulnerability Segmentation Hypothesis in Trees Across Multiple Ecosystems Open
Plant hydraulic theory states that leaf and stem vulnerability to embolism is coordinated within individual plants. The hydraulic vulnerability segmentation hypothesis (HVSH) predicts higher vulnerability in leaves to protect the stem from…
View article: The AusTraits plant dictionary
The AusTraits plant dictionary Open
Traits with intuitive names, a clear scope and explicit description are essential for all trait databases. The lack of unified, comprehensive, and machine-readable plant trait definitions limits the utility of trait databases, including re…
View article: Demographic change and loss of big trees in resprouting eucalypt forests exposed to megadisturbance
Demographic change and loss of big trees in resprouting eucalypt forests exposed to megadisturbance Open
Aim Increased tree mortality linked to droughts and fires is occurring across temperate regions globally. Vegetation recovery has been widely reported; however, less is known about how disturbance may alter forests structurally and functio…
View article: Hydraulic variability of tropical forests is largely independent of water availability
Hydraulic variability of tropical forests is largely independent of water availability Open
Tropical rainforest woody plants have been thought to have uniformly low resistance to hydraulic failure and to function near the edge of their hydraulic safety margin (HSM), making these ecosystems vulnerable to drought; however, this may…
View article: Seasonal variation in the xylem sap composition of six Australian trees and shrubs
Seasonal variation in the xylem sap composition of six Australian trees and shrubs Open
In recent years, xylem sap composition has been shown to affect xylem hydraulics. However, information on how much xylem sap composition can vary across seasons and specifically under drought stress is still limited. We measured xylem sap …
View article: The AusTraits Plant Dictionary
The AusTraits Plant Dictionary Open
Traits with intuitive names, a clear scope and explicit description are essential for all trait databases. Reanalysis of data from a single database, or analyses that integrate data across multiple databases, can only occur if researchers …
View article: Climate succession: a framework for predicting vegetation dynamics driven by climate change
Climate succession: a framework for predicting vegetation dynamics driven by climate change Open
Climate change, driven by rising atmospheric CO2 concentrations, is well under way, and we are already starting to see significant shifts in the function and distribution of vegetation as a result. Dynamic vegetation models, the main platf…
View article: Towards species-level forecasts of drought-induced tree mortality risk
Towards species-level forecasts of drought-induced tree mortality risk Open
Australia is the driest inhabited continent. Annual rainfall is low and is accompanied by marked inter-annual variability, leading to multi-year droughts. n particular, South-East Australia has recently experienced two…
View article: Using dense Sentinel-2 time series to explore combined fire and drought impacts in eucalypt forests
Using dense Sentinel-2 time series to explore combined fire and drought impacts in eucalypt forests Open
Following one of the driest years on record, millions of hectares of forests in southeast Australia were burned in the 2019–2020 “Black Summer” wildfires. In addition to the areas burned, drought related canopy collapse, dieback and tree m…
View article: Corrigendum: Unlocking drought-induced tree mortality: Physiological mechanisms to modelling
Corrigendum: Unlocking drought-induced tree mortality: Physiological mechanisms to modelling Open
[This corrects the article DOI: 10.3389/fpls.2022.835921.].
View article: Data_manuscript_1_Arjunanetal
Data_manuscript_1_Arjunanetal Open
This daset comprises of the data used in the manuscript entitled " Stomatal, hydraulic and leaf browning responses to experimental drought in Australian grass species" - Arjunan et al
View article: Canopy dieback and recovery in Australian native forests following extreme drought
Canopy dieback and recovery in Australian native forests following extreme drought Open
View article: The global spectrum of plant form and function: enhanced species-level trait dataset
The global spectrum of plant form and function: enhanced species-level trait dataset Open
View article: Plant hydraulic modelling of leaf and canopy fuel moisture content reveals increasing vulnerability of a Mediterranean forest to wildfires under extreme drought
Plant hydraulic modelling of leaf and canopy fuel moisture content reveals increasing vulnerability of a Mediterranean forest to wildfires under extreme drought Open
Summary Fuel moisture content (FMC) is a crucial driver of forest fires in many regions world‐wide. Yet, the dynamics of FMC in forest canopies as well as their physiological and environmental determinants remain poorly understood, especia…
View article: The Role of Hydraulic Failure in a Massive Mangrove Die-Off Event
The Role of Hydraulic Failure in a Massive Mangrove Die-Off Event Open
Between late 2015 and early 2016, more than 7,000 ha of mangrove forest died along the coastline of the Gulf of Carpentaria, in northern Australia. This massive die-off was preceded by a strong 2015/2016 El Niño event, resulting in lower p…
View article: Conduit position and connectivity affect the likelihood of xylem embolism during natural drought in evergreen woodland species
Conduit position and connectivity affect the likelihood of xylem embolism during natural drought in evergreen woodland species Open
Background and Aims Hydraulic failure is considered a main cause of drought-induced forest mortality. Yet, we have a limited understanding of how the varying intensities and long time scales of natural droughts induce and propagate embolis…
View article: Leaf water potential measurements using the pressure chamber: Synthetic testing of assumptions towards best practices for precision and accuracy
Leaf water potential measurements using the pressure chamber: Synthetic testing of assumptions towards best practices for precision and accuracy Open
Leaf water potential ( ψ leaf ), typically measured using the pressure chamber, is the most important metric of plant water status, providing high theoretical value and information content for multiple applications in quantifying critical …
View article: Unlocking Drought-Induced Tree Mortality: Physiological Mechanisms to Modeling
Unlocking Drought-Induced Tree Mortality: Physiological Mechanisms to Modeling Open
Drought-related tree mortality has become a major concern worldwide due to its pronounced negative impacts on the functioning and sustainability of forest ecosystems. However, our ability to identify the species that are most vulnerable to…
View article: Towards species‐level forecasts of drought‐induced tree mortality risk
Towards species‐level forecasts of drought‐induced tree mortality risk Open
Summary Predicting species‐level responses to drought at the landscape scale is critical to reducing uncertainty in future terrestrial carbon and water cycle projections. We embedded a stomatal optimisation model in the Community Atmospher…
View article: Mechanisms of woody-plant mortality under rising drought, CO2 and vapour pressure deficit
Mechanisms of woody-plant mortality under rising drought, CO2 and vapour pressure deficit Open
View article: Towards species-level forecasts of drought-induced tree mortality risk
Towards species-level forecasts of drought-induced tree mortality risk Open
<p>Predicting species-level responses to drought at the landscape scale is critical to reducing future uncertainty in terrestrial carbon and water cycle projections. We embedded a stomatal optimisation model in the Community Atmosphe…
View article: One Stomatal Model to Rule Them All? Toward Improved Representation of Carbon and Water Exchange in Global Models
One Stomatal Model to Rule Them All? Toward Improved Representation of Carbon and Water Exchange in Global Models Open
Stomatal conductance schemes that optimize with respect to photosynthetic and hydraulic functions have been proposed to address biases in land‐surface model (LSM) simulations during drought. However, systematic evaluations of both optimali…
View article: AusTraits, a curated plant trait database for the Australian flora
AusTraits, a curated plant trait database for the Australian flora Open
We introduce the AusTraits database - a compilation of values of plant traits for taxa in the Australian flora (hereafter AusTraits). AusTraits synthesises data on 448 traits across 28,640 taxa from field campaigns, published literature, t…