ORCID Profile
0000-0002-7477-8697
Current Organisation
ArborCarbon
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Photogrammetry and Remote Sensing | Plant Pathology | Plant Physiology | Environmental Management | Aerospace Engineering | Satellite, Space Vehicle and Missile Design and Testing | Plant Biology | Astronomical and Space Instrumentation
ANZSRC Socio-Economic Objective (SEO)
Control of Animal Pests, Diseases and Exotic Species in Forest and Woodlands Environments | Aerospace Equipment | Expanding Knowledge in the Environmental Sciences | Scientific Instruments | Forest and Woodlands Flora, Fauna and Biodiversity |
Related Links
Publications
Dieback classification modelling using high-resolution digital multispectral imagery and in situ assessments of crown condition
Publisher: Informa UK Limited
Date: 11-2014
Botryosphaeria spp. associated with eucalypts in Western Australia, including the description of Fusicoccum macroclavatum sp. nov.
Publisher: Springer Science and Business Media LLC
Date: 2005
DOI: 10.1071/AP05073
A Blueprint for the Estimation of Seagrass Carbon Stock Using Remote Sensing-Enabled Proxies
Publisher: MDPI AG
Date: 25-07-2022
DOI: 10.3390/RS14153572
Abstract: Seagrass ecosystems sequester carbon at disproportionately high rates compared to terrestrial ecosystems and represent a powerful potential contributor to climate change mitigation and adaptation projects. However, at a local scale, rich heterogeneity in seagrass ecosystems may lead to variability in carbon sequestration. Differences in carbon sequestration rates, both within and between seagrass meadows, are related to a wide range of interrelated biophysical and environmental variables that are difficult to measure holistically using traditional field surveys. Improved methods for producing robust, spatially explicit estimates of seagrass carbon storage across large areas would be highly valuable, but must capture complex biophysical heterogeneity and variability to be accurate and useful. Here, we review the current and emerging literature on biophysical processes which shape carbon storage in seagrass beds, alongside studies that map seagrass characteristics using satellite remote sensing data, to create a blueprint for the development of remote sensing-enabled proxies for seagrass carbon stock and sequestration. Applications of satellite remote sensing included measuring seagrass meadow extent, estimating above-ground biomass, mapping species composition, quantifying patchiness and patch connectivity, determining broader landscape environmental contexts, and characterising seagrass life cycles. All of these characteristics may contribute to variability in seagrass carbon storage. As such, remote sensing methods are uniquely placed to enable proxy-based estimates of seagrass carbon stock by capturing their biophysical characteristics, in addition to the spatiotemporal heterogeneity and variability of these characteristics. Though the outlined approach is complex, it is suitable for accurately and efficiently producing a full picture of seagrass carbon stock. This review has drawn links between the processes of seagrass carbon sequestration and the capabilities of remote sensing to detect and characterise these processes. These links will facilitate the development of remote sensing-enabled proxies and support spatially explicit estimates of carbon stock, ensuring climate change mitigation and adaptation projects involving seagrass are accounted for with increased accuracy and reliability.
Leaf diseases caused by Mycosphaerella species in Eucalyptus globulus plantations and nearby native forest in the Green Triangle Region of southern Australia
Publisher: Springer Science and Business Media LLC
Date: 2008
DOI: 10.1071/AP08044
Kirramyces viscidus sp. nov., a new eucalypt pathogen from tropical Australia closely related to the serious leaf pathogen, Kirramyces destructans
Publisher: Springer Science and Business Media LLC
Date: 2007
DOI: 10.1071/AP07054
Cooling Effects of Urban Vegetation: The Role of Golf Courses
Publisher: MDPI AG
Date: 09-2022
DOI: 10.3390/RS14174351
Abstract: Increased heat in urban environments, from the combined effects of climate change and land use/land cover change, is one of the most severe problems confronting cities and urban residents worldwide, and requires urgent resolution. While large urban green spaces such as parks and nature reserves are widely recognized for their benefits in mitigating urban heat islands (UHIs), the benefit of urban golf courses is less established. This is the first study to combine remote sensing of golf courses with Morphological Spatial Pattern Analysis (MSPA) of vegetation cover. Using ArborCamTM multispectral, high-resolution airborne imagery (0.3 × 0.3 m), this study develops an approach that assesses the role of golf courses in reducing urban land surface temperature (LST) relative to other urban land-uses in Perth, Australia, and identifies factors that influence cooling. The study revealed that urban golf courses had the second lowest LST (around 31 °C) after conservation land (30 °C), compared to industrial, residential, and main road land uses, which ranged from 35 to 37 °C. They thus have a strong capacity for summer urban heat mitigation. Within the golf courses, distance to water bodies and vegetation structure are important factors contributing to cooling effects. Green spaces comprising tall trees ( m) and large vegetation patches have strong effects in reducing LST. This suggests that increasing the proportion of large trees, and increasing vegetation connectivity within golf courses and with other local green spaces, can decrease urban LST, thus providing benefits for urban residents. Moreover, as golf courses are useful for bio ersity conservation, planning for new golf course development should embrace the retention of native vegetation and linkages to conservation corridors.
Phytophthora versiformis sp. nov., a new species from Australia related to P. quercina
Publisher: Springer Science and Business Media LLC
Date: 17-06-2017
Unravelling Mycosphaerella: do you believe in genera?
Publisher: Naturalis Biodiversity Center
Date: 31-12-2009
New species of Teratosphaeria associated with leaf diseases on Corymbia calophylla (Marri)
Publisher: Springer Science and Business Media LLC
Date: 28-01-2012
Seven new species of the Botryosphaeriaceae from baobab and other native trees in Western Australia
Publisher: Informa UK Limited
Date: 11-2008
DOI: 10.3852/08-020
Abstract: In this study seven new species of the Botryosphaeriaceae are described from baobab (Adansonia gibbosa) and surrounding endemic tree species growing in the Kimberley region of northwestern Australia. Members of the Botryosphaeriaceae were predominantly endophytes isolated from apparently healthy sapwood and bark of endemic trees others were isolated from dying branches. Phylogenetic analyses of ITS and EF1-alpha sequence data revealed seven new species: Dothiorella longicollis, Fusicoccum ramosum, Lasiodiplodia margaritacea, Neoscytalidium novaehollandiae, Pseudofusicoccum adansoniae, P. ardesiacum and P. kimberleyense.
A specific primer PCR and RFLP assay for the rapid detection and differentiation in planta of some Mycosphaerella species associated with foliar diseases of Eucalyptus globulus
Publisher: Elsevier BV
Date: 12-2004
DOI: 10.1017/S0953756204000759
Abstract: It is difficult to accurately identify Mycosphaerella species associated with leaf diseases of Eucalyptus based on morphological characters, as there is considerable overlap between very similar species and subspecies, and isolation from the host is not easy. Thus, a PCR and RFLP assay based on the ITS region of nr DNA was developed for the rapid detection and differentiation of M. nubilosa, M. cryptica and two non-sporing unidentified Mycosphaerella species isolated from the foliage of trees in resistant and susceptible families of E. globulus in a seed orchard at Kinglake West, Victoria, Australia. The M. nubilosa primer pair MNF/MNR was highly specific. A PCR-RFLP system based on the primer pair MCF/MCR, coupled with two restriction enzymes (DdeI and Tru1 I), differentiated M. cryptica, M. nubilosa, M. tasmaniensis and M. aff. vespa. One of the unidentified field-isolated Mycosphaerella species was identified as M. grandis on the basis of ITS sequence data while the other species remains unidentified. A PCR-RFLP system based on the primer pair U1F/U1R, coupled with the restriction enzyme StyI, differentiated between the two unidentified species. Unexpectedly, unlike isolation and culture studies, these assays detected M. nubilosa, M. cryptica and M. grandis in all single lesions examined on both juvenile and adult leaves, and on both highly resistant and highly susceptible E. globulus trees at this site.
Microbat responses to forest decline
Publisher: Wiley
Date: 25-10-2019
DOI: 10.1111/AEC.12671
Seedling mycorrhizal type and soil chemistry are related to canopy condition of Eucalyptus gomphocephala
Publisher: Springer Science and Business Media LLC
Date: 12-01-2013
DOI: 10.1007/S00572-012-0476-5
Abstract: The health of Eucalyptus gomphocephala is declining within its natural range in south-western Australia. In a pilot study to assess whether changes in mycorrhizal fungi and soil chemistry might be associated with E. gomphocephala decline, we set up a containerized bioassay experiment with E. gomphocephala as the trap plant using intact soil cores collected from 12 sites with E. gomphocephala canopy condition ranging from healthy to declining. Adjacent soil s les were collected for chemical analysis. The type of mycorrhiza (arbuscular or ectomycorrhizal) formed in containerized seedlings predicted the canopy condition of E. gomphocephala at the sites where the cores were taken. Ectomycorrhizal fungi colonization was higher in seedling roots in soil taken from sites with healthy canopies, whereas colonization by arbuscular mycorrhizal fungi dominated in roots in soil taken from sites with declining canopies. Furthermore, several soil chemical properties predicted canopy condition and the type of mycorrhizal fungi colonizing roots. These preliminary findings suggest that large-scale studies should be undertaken in the field to quantify those ectomycorrhiza (ECM) fungi sensitive to E. gomphocephala canopy decline and whether particular ECM fungi are bioindicators of ecosystem health.
Phytophthora multivora sp. nov., a new species recovered from declining Eucalyptus, Banksia, Agonis and other plant species in Western Australia
Publisher: Naturalis Biodiversity Center
Date: 30-06-2009
Fungal Planet description sheets: 320–370
Publisher: Naturalis Biodiversity Center
Date: 29-06-2015
Age-related susceptibility of Eucalyptus species to Phytophthora boodjera
Publisher: Wiley
Date: 08-09-2017
DOI: 10.1111/PPA.12592
Botryosphaeriaceae from tuart (Eucalyptus gomphocephala) woodland, including descriptions of four new species
Publisher: Elsevier BV
Date: 03-2009
DOI: 10.1016/J.MYCRES.2008.11.010
Abstract: Eucalyptus gomphocephala (tuart) is a tree native to the southwest coast of Western Australia, where, in some areas, there is a significant decline in the health of tuart. Botryosphaeriaceous taxa have been isolated as endophytes and canker pathogens from numerous hosts in many parts of the world and have been implicated in the decline of E. gomphocephala. In the present study, endophytic fungi were isolated from a wide variety of native woody plant species (Acacia cochlearis, A. rostellifera, Allocasuarina fraseriana, Agonis flexuosa, Banksia grandis, E. gomphocephala, E. marginata and Santalum acuminatum), at two locations in native E. gomphocephala woodland a site in decline at Yalgorup National Park and a healthy site at Woodman Point Regional Park. Of the 226 isolates obtained, 154 were botryosphaeriaceous taxa, 80% of which were found to be Neofusicoccum australe, isolated from all hosts at both collection sites. Four new species are described, Dothiorella moneti, Dothiorella santali, Neofusicoccum pennatisporum, and a species belonging to a genus only recently included in the Botryosphaeriaceae, Aplosporella yalgorensis. The other species isolated were Botryosphaeria dothidea on the new hosts A. rostellifera, A. cochlearis and E. marginata and Dichomera eucalypti, on the new host E. marginata. None of the new species formed lesions on excised stems of their host species, E. gomphocephala, or a common plantation species, E. globulus. However, Neofusicoccum australe formed lesions on excised stems of E. globulus and E. gomphocephala.
A diverse range of Phytophthora species are associated with dying urban trees
Publisher: Elsevier BV
Date: 2013
Fungal associations in Asphondylia (Diptera: Cecidomyiidae) galls from Australia and South Africa: implications for biological control of invasive acacias
Publisher: Elsevier BV
Date: 08-2009
Linking a decade of forest decline in the south-west of Western Australia to bioclimatic change
Publisher: Informa UK Limited
Date: 12-2013
Characterising the Aboveground Carbon Content of Saltmarsh in Jervis Bay, NSW, Using ArborCam and PlanetScope
Publisher: MDPI AG
Date: 07-04-2022
DOI: 10.3390/RS14081782
Abstract: Coastal ecosystems, including saltmarsh, provide important ecosystem services, including blue carbon storage, nutrient cycling, and coastal protection. The loss or degradation of saltmarsh ecosystems may undermine their capacity to provide these services and drive carbon emission increases. The accurate mapping and monitoring of the aboveground carbon content in these ecosystems supports protection and rehabilitation activities. Previous studies have used medium resolution satellites (e.g., Landsat and Sentinel-2) to characterise saltmarsh communities however, these platforms are not well suited to the fine-scale patchiness of the saltmarsh ecosystems found in Australia. Here we explore the potential of a very high spatial resolution (0.15 m), seven-band multispectral ArborCam airborne sensor and 3 m images captured by the PlanetScope satellite constellation for mapping and monitoring the aboveground carbon content of a saltmarsh ecosystem in Jervis Bay National Park, Australia. The Normalized Difference Vegetation Index (NDVI) derived from an ArborCam image was calibrated to aboveground carbon content using field survey data. Strong linear relationships between the ArborCam NDVI and aboveground carbon content were found when survey data were partitioned by species. The mean aboveground carbon content derived from the calibrated ArborCam image was 1.32 Mg C ha−1 across the study area however, this is likely to have been underestimated. A monthly NDVI time series derived from 12 PlanetScope images was analysed to investigate the short-term temporal variation in saltmarsh phenology, and significant intra-annual variation was found. An exploration of potential drivers for the variation found that local rainfall was a potential driver. The combination of the very high spatial resolution airborne ArborCam image and the regular 3 m capture by PlanetScope satellites was found to have potential for accurate mapping and monitoring of aboveground carbon in saltmarsh communities. Future work will focus on improving aboveground carbon estimates by including a very high spatial resolution species distribution map and investigating the influence of temporal variations in saltmarsh spectral response on these estimates.
Tuart (Eucalyptus gomphocephala) decline is not associated with other vegetation structure and composition changes
Publisher: Springer Science and Business Media LLC
Date: 14-07-2018
First record of Mycosphaerella tasmaniensis on mainland Australia
Publisher: Springer Science and Business Media LLC
Date: 2005
DOI: 10.1071/AP04086
Soil bacterial functional diversity is associated with the decline of Eucalyptus gomphocephala
Publisher: Elsevier BV
Date: 08-2010
First record of Mycosphaerella heimii in Australia
Publisher: Springer Science and Business Media LLC
Date: 2005
DOI: 10.1071/AP05070
Phosphite and nutrient applications as explorative tools to identify possible factors associated with Eucalyptus gomphocephala decline in South-Western Australia
Publisher: Springer Science and Business Media LLC
Date: 20-08-2013
Phylogenetic reassessment supports accommodation of Phaeophleospora and Colletogloeopsis from eucalypts in Kirramyces
Publisher: Elsevier BV
Date: 10-2007
DOI: 10.1016/J.MYCRES.2007.07.003
Abstract: Species of Phaeophleospora are anamorphs of Mycosphaerella and they include some of the most serious foliar pathogens of Eucalyptus spp. grown in plantations worldwide. Pathogens assigned to this genus and occurring on Eucalyptus spp. were previously treated in Kirramyces and they are also phylogenetically closely related to other anamorphs of Mycosphaerella residing in the genus Colletogloeopsis. The primary aim of this study was to consider the appropriate taxonomic placement of these species. To achieve this goal, morphological characteristics and DNA sequence data from the ITS and translation EF1-alpha gene regions were used to compare the type species P. eugeniae, Phaeophleospora spp. and Colletogloeopsis spp. occurring on eucalypts, using ex-type cultures and herbarium specimens. Phylogenetic data and morphological comparisons supported the separation of P. eugeniae from Phaeophleospora species occurring on eucalypts. The name Phaeophleospora is retained for P. eugeniae and the name Kirramyces is resurrected for the species occurring on eucalypts (genera Eucalyptus, Corymbia, and Angophora). Sequence data from the type specimens of two previously described species of Kirramyces, K. lilianiae and K. delegatensis, show they reside in a clade with other Kirramyces spp. Morphological and DNA sequence comparisons also showed that there is considerable overlap between species of Phaeophleospora and Colletogloeopsis from eucalypts. Based on these findings, Colletogloeopsis is reduced to synonymy with the older Kirramyces and the description of Kirramyces is emended to include species with aseptate, as well as multiseptate, conidia produced in acervuli or pycnidia. Two new species of Kirramyces, K. angophorae and K. corymbiae, are also described.
Extending the host range of Phytophthora multivora, a pathogen of woody plants in horticulture, nurseries, urban environments and natural ecosystems
Publisher: Elsevier BV
Date: 12-2019
Plants for planting; indirect evidence for the movement of a serious forest pathogen, Teratosphaeria destructans, in Asia
Publisher: Springer Science and Business Media LLC
Date: 21-04-2011
Reassessing Vermisporium (Amphisphaeriaceae), a genus of foliar pathogens of eucalypts
Publisher: Naturalis Biodiversity Center
Date: 31-12-2011
Shade coverage, ultraviolet radiation and children’s physical activity in early childhood education and care
Publisher: Springer Science and Business Media LLC
Date: 31-08-2019
DOI: 10.1007/S00038-019-01289-Y
Abstract: To investigate the association between shade coverage in early childhood education and care (ECEC) centres and pre-school children's physical activity, outdoor time and ultraviolet radiation (UVR) exposure. A total of 48 ECEC centres (678 children) in the Western Australian Play Spaces and Environments for Children's Physical Activity (PLAYCE) study took part. Physical activity at ECEC was measured using 7-day accelerometry. UVR exposure was measured using polysulphone film attached to children's shoulders. Educators reported time spent outdoors. The Shade Factor and remote sensing imagery captured shade coverage. Centre vegetation but not Shade Factor was significantly negatively associated with children's UVR exposure (p < 0.001). Higher levels of vegetation were associated with increased time outdoors, but higher levels of the Shade Factor were associated with decreased time outdoors (all p < 0.001). Neither shade measure was significantly associated with physical activity. Outdoor time moderated the relationships between shade measures, physical activity and UVR exposure. The provision of shade, particularly through natural forms such as tree canopy, is an important sun protection strategy and enabler of outdoor time in children attending ECEC.
Restoration treatments improve seedling establishment in a degraded Mediterranean-type Eucalyptus ecosystem
Publisher: CSIRO Publishing
Date: 2010
DOI: 10.1071/BT10211
Abstract: Restoration of degraded Mediterranean-type ecosystems (MTEs) with long, hot and dry summers is challenging. To develop management guidelines, we evaluated techniques that could improve seedling establishment in two degraded Eucalyptus gomphocephala DC (tuart) woodlands, given weed and herbivore control. These techniques aimed to mimic favourable conditions for species that primarily recruit following disturbance events (e.g. fire). Trial 1 investigated the response of 5-month-old seedlings and broadcast seed in plots that contained a created ashbed, were ripped, or were ripped and contained an ashbed. Trial 2 examined the response of 5-month-old seedlings to treatments providing a nutrient or moisture source (slow-release fertiliser tablet, chelating agent, slow-release fertiliser tablet plus chelating agent, zeolite, hydrated hydrophilic co-polymers and dry hydrophilic co-polymers). Results indicated that created ashbeds enhance establishment for a range of species and reduce weed cover, with or without ripping. Broadcast seeding was not successful in returning species to site. Higher growth rates were recorded in seedlings treated with a nutrient source. The present study has shown that it is possible to re-establish local plant species in degraded woodlands through several techniques that mimic disturbance (e.g. fire). Strong early growth may be the vital start seedlings need in MTEs in the face of reinvading weed species, herbivory and a drying climate.
Botryosphaeria species from Eucalyptus in Australia are pleoanamorphic, producing Dichomera synanamorphs in culture
Publisher: Elsevier BV
Date: 12-2005
DOI: 10.1017/S0953756205003989
Abstract: Species within the genus Botryosphaeria include some of the most widespread and important pathogens of woody plants, and have been the focus of numerous taxonomic studies in recent years. It is currently accepted that anamorphs of Botryosphaeria belong to two distinct genera, Fusicoccum and Diplodia. Species within the genus Fusicoccum commonly produce aseptate, hyaline conidia. In the present study, fungi were isolated from foliage and wood of Eucalyptus in native forests and plantations in Australia. Although these fungi produced Dichomera anamorphs in culture, they clustered within the Fusicoccum clade of Botryosphaeria based on their ITS sequence data. Four species, Botryosphaeria dothidea, B. parva, B. ribis and B. australis produced Dichomera conidia in culture. The Dichomera synanamorphs are described for these four species of Botryosphaeria. In addition, falling within the Fusicoccum clade of Botryosphaeria, two species were found to be distinct from previously described Botryosphaeria spp. based on their ITS sequences, but synonymous with D. versiformis and D. eucalypti. These observations are currently unique to isolates from host trees within the genus Eucalyptus in Australia, and the pleoanamorphic nature of these species is discussed.
Pathogenicity of Phytophthora multivora to Eucalyptus gomphocephala and Eucalyptus marginata
Publisher: Wiley
Date: 19-12-2012
Diversity of fungi associated with roots of Eucalyptus gomphocephala seedlings grown in soil from healthy and declining sites
Publisher: Springer Science and Business Media LLC
Date: 21-02-2018
Enhancing a eucalypt crown condition indicator driven by high spatial and spectral resolution remote sensing imagery
Publisher: SPIE-Intl Soc Optical Eng
Date: 04-12-2012
Foliar diseases of Eucalyptus spp. grown for ornamental cut foliage
Publisher: Springer Science and Business Media LLC
Date: 2003
DOI: 10.1071/AP02055
Association of Phytophthora with Declining Vegetation in an Urban Forest Environment
Publisher: MDPI AG
Date: 29-06-2020
DOI: 10.3390/MICROORGANISMS8070973
Abstract: Urban forests consist of various environments from intensely managed spaces to conservation areas and are often reservoirs of a erse range of invasive pathogens due to their introduction through the nursery trade. Pathogens are likely to persist because the urban forest contains a mixture of native and exotic plant species, and the environmental conditions are often less than ideal for the trees. To test the impact of different land management approaches on the Phytophthora community, 236 discrete soil and root s les were collected from declining trees in 91 parks and nature reserves in Joondalup, Western Australia (WA). S ling targeted an extensive variety of declining native trees and shrubs, from families known to be susceptible to Phytophthora. A sub-s le was set aside and DNA extracted for metabarcoding using Phytophthora-specific primers the remaining soil and root s le was baited for the isolation of Phytophthora. We considered the effect on the Phytophthora community of park class and area, soil family, and the change in canopy cover or health as determined through sequential measurements using remote sensing. Of the 236 s les, baiting techniques detected Phytophthora species from 24 s les (18 parks), while metabarcoding detected Phytophthora from 168 s les (64 parks). Overall, forty-four Phytophthora phylotypes were detected. Considering only s ling sites where Phytophthora was detected, species richness averaged 5.82 (range 1–21) for s les and 9.23 (range 2–24) for parks. Phytophthora multivora was the most frequently found species followed by P. arenaria, P. amnicola and P. cinnamomi. While park area and canopy cover had a significant effect on Phytophthora community the R2 values were very low, indicating they have had little effect in shaping the community. Phytophthora cinnamomi and P. multivora, the two most invasive species, often co-occurring (61% of s les) however, the communities with P. multivora were more common than those with P. cinnamomi, reflecting observations over the past decade of the increasing importance of P. multivora as a pathogen in the urban environment.
Control of Ceratocystis manginecans causing wilt disease on Acacia mangium seedlings
Publisher: Springer Science and Business Media LLC
Date: 08-09-2018
A severe canker disease of Corymbia ficifolia caused by Quambalaria coyrecup in native and urban forests of Western Australia
Publisher: Wiley
Date: 13-01-2014
DOI: 10.1111/EFP.12082
Relationships between the crown health, fine root and ectomycorrhizae density of declining Eucalyptus gomphocephala
Publisher: Springer Science and Business Media LLC
Date: 06-07-2013
Novel phosphite and nutrient application to control Phytophthora cinnamomi disease
Publisher: Springer Science and Business Media LLC
Date: 07-2015
Related Organisations
Related Funding Activities
Linkage Projects - Grant ID: LP100200808
Start Date: 07-2010
End Date: 12-2013
Amount: $230,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Training Centres - Grant ID: IC170100023
Start Date: 12-2017
End Date: 12-2024
Amount: $4,619,950.00
Funder: Australian Research Council
View Funded Activity