
Associate Professor Troy Gaston
Associate Professor
School of Environmental and Life Sciences (Environmental Science and Management)
- Email:troy.gaston@newcastle.edu.au
- Phone:(02) 4349 4569
Career Summary
Biography
Development of environmental monitoring programs addressing water quality, ecosystem health and ecosystem processes. Understanding trophic interactions, tracking nutrient sources, elucidating food webs and stable isotope analysis in benthic, planktonic and pelagic estuarine and coastal systems. Quantifying anthropogenic disturbances on estuarine and coastal ecosystems. Novel bycatch reduction methods in prawn trawl fisheries.
Qualifications
- PhD, University of New South Wales
- Bachelor of Science (Honours), University of New South Wales
- Graduate Certificate in University Teach & Learn, University of Tasmania
Keywords
- Bycatch Reduction in Fisheries
- Ecosystem Health
- Ecosystem Processes
- Estuarine Ecology
- Estuarine, Coastal and Marine Ecology
- GIS and Remote Sensing
- Human Disturbance
- Marine Ecology
- Oceanography
- Trophic Interactions
Fields of Research
Code | Description | Percentage |
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050102 | Ecosystem Function | 30 |
050204 | Environmental Impact Assessment | 35 |
050206 | Environmental Monitoring | 35 |
Professional Experience
UON Appointment
Title | Organisation / Department |
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Associate Professor | University of Newcastle School of Environmental and Life Sciences Australia |
Academic appointment
Dates | Title | Organisation / Department |
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1/7/2005 - 1/3/2012 | Lecturer - Marine Biology and Ecology | University of Tasmania Australia |
1/3/2002 - 1/6/2005 | Postdoctoral Researcher | University of the Sunshine Coast Australia |
1/3/2012 - | Lecturer - Environmental Science | University of Newcastle School of Environmental and Life Sciences Australia |
Publications
For publications that are currently unpublished or in-press, details are shown in italics.
Book (1 outputs)
Year | Citation | Altmetrics | Link |
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2010 | Maynard D, Gaston T, Beneath the Tamar. More than Silt, NRM North, Launceston, Tasmania, 123 (2010) [A2] |
Journal article (42 outputs)
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2021 |
Niella Y, Raoult V, Gaston T, Peddemors VM, Harcourt R, Smoothey AF, 'Overcoming multi-year impacts of maternal isotope signatures using multi-tracers and fast turnover tissues in juvenile sharks', Chemosphere, 269 (2021) © 2020 Elsevier Ltd Stable isotopes are often used to determine the ecological role of different age classes of animals, but particularly for young animals this approach may be co... [more] © 2020 Elsevier Ltd Stable isotopes are often used to determine the ecological role of different age classes of animals, but particularly for young animals this approach may be compromised. During gestation and or incubation body tissues of the young are derived directly from the mother. In neonates or post hatching, there is a period of transformation as the young grow and forage independently, but during this period different organs will continue to reflect the maternal isotopic signature as a function of their turnover rate. How long this maternal hangover persists remains poorly understood. We applied a multi-tracer approach (d15N, d13C and d34S) to stable isotope signatures in juvenile bull sharks (Carcharhinus leucas) up to 6.5 years post parturition. We found that maternal provisioning was detectable for up to 3.5 years after birth in muscle but only detectable in young-of-the-year for liver. Inclusion of sulphur revealed when maternal signatures disappeared from low-turnover tissue, while also identifying the spatial and trophic ecology patterns from fast-turnover tissue. These results reveal the importance of sampling fast turnover tissues to study the trophic ecology of juvenile elasmobranchs, and how the use of only d15N and d13C isotopes is likely to make maternal patterns more difficult to detect.
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2021 |
McLuckie C, Moltschaniwskyj N, Gaston T, Taylor MD, 'Effects of reduced pH on an estuarine penaeid shrimp (Metapenaeus macleayi)', Environmental Pollution, 268 (2021) © 2020 Acid sulfate soils are a major problem in modified coastal floodplains and are thought to have substantial impacts on estuarine species. In New South Wales, Australia, acid... [more] © 2020 Acid sulfate soils are a major problem in modified coastal floodplains and are thought to have substantial impacts on estuarine species. In New South Wales, Australia, acid sulfate soils occur in every estuary and are thought to impact important fisheries species, such as Eastern School Prawn (Metapenaeus macleayi). These fisheries have experienced declining productivity over the last ten years and increasing occurrence of catchment-derived stressors in estuaries contribute to this problem. We evaluated the effect of pH 4¿7.5 on School Prawn survival at two salinities (27 and 14.5), pH 5, 6 and 7.5 on the predation escape response (PER) speed at two salinities (27 and 14.5), and pH 4 and 7.5 on respiration rates. While mortality appeared to be greater in the high salinity treatment, there was no significant relationship between proportional survival and pH for either salinity treatment. Respiration was significantly slower under acidic conditions and the average PER was almost twice as fast at pH 7.5 compared to pH 5 (p < 0.05), indicating prawns may fall prey to predation more easily in acidic conditions. These findings confirm the hypothesised impacts of acidic water on penaeid prawns. Given that the conditions simulated in these experiments reflect those encountered in estuaries, acidic runoff may be contributing to bottlenecks for estuarine species and impacting fisheries productivity.
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2020 |
Burke PJ, Mourier J, Gaston TF, Williamson JE, 'Novel use of pop-up satellite archival telemetry in sawsharks: insights into the movement of the common sawshark Pristiophorus cirratus (Pristiophoridae)', Animal Biotelemetry, 8 (2020) [C1] © 2020, The Author(s). Background: Understanding movement patterns of a species is vital for optimising conservation and management strategies. This information is often difficult... [more] © 2020, The Author(s). Background: Understanding movement patterns of a species is vital for optimising conservation and management strategies. This information is often difficult to obtain in the marine realm for species that regularly occur at depth. The common sawshark (Pristiophorus cirratus) is a small, benthic-associated elasmobranch species that occurs from shallow to deep-sea environments. No information is known regarding its movement ecology. Despite this, P. cirrata are still regularly landed as nontargeted catch in the south eastern Australian fisheries. Three individuals were tagged with pop-up satellite archival tags (PSATs) off the coast of Tasmania, Australia, to test the viability of satellite tagging on these small elasmobranchs and to provide novel insights into their movement. Results: Tags were successfully retained for up to 3 weeks, but movement differed on an individual basis. All three individuals displayed a post-release response to tagging and limited vertical movement was observed for up to 5¿7¿days post-tagging. Temperature loggers on the tags suggest the animals were not stationary but moved horizontally during this time, presumably in a flight response. After this response, continuous wavelet transformations identified diel vertical movements in one individual at cyclical intervals of 12- and 24-hour periods; however, two others did not display as clear a pattern. Temperature was not significantly correlated with movement in the study period. The deepest depths recorded during the deployments for all individuals was approximately 120 m and the shallowest was 5 m. Conclusions: This study demonstrates that sawsharks can be successfully tagged by pop-up satellite archival tags. The data presented here show that sawsharks regularly move both horizontally and vertically in the water column, which was an unexpected result for this small benthic species. Additional research aimed at resolving the trophic ecology will help identify the drivers of these movements and help to better define the ecological, behavioural and physiological roles of these sharks in their ecosystems. These data describe a substantial ability to move in the common sawshark that was previously unknown and provides the first account of movement ecology on the family of sawsharks: Pristiophoridae.
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2020 |
Carbia PS, Brown C, Park JM, Gaston TF, Raoult V, Williamson JE, 'Seasonal and developmental diet shifts in sympatric and allopatric intertidal gobies determined by stomach content and stable isotope analysis', Journal of Fish Biology, 26 5613-5629 (2020) [C1]
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2020 |
McLuckie C, Moltschaniwskyj N, Gaston T, Dunstan RH, Crompton M, Butcherine P, et al., 'Lethal and sub-lethal effects of environmentally relevant levels of imidacloprid pesticide to Eastern School Prawn, Metapenaeus macleayi', Science of the Total Environment, 742 (2020) [C1] © 2020 Pesticides are frequently employed to enhance agricultural production. Neonicotinoid pesticides (including imidacloprid) are often used to control sucking insects but have ... [more] © 2020 Pesticides are frequently employed to enhance agricultural production. Neonicotinoid pesticides (including imidacloprid) are often used to control sucking insects but have been shown to impact aquatic crustaceans. Imidacloprid is highly water soluble and has been detected in estuaries where it has been applied in adjacent catchments. We examined the impact of environmentally relevant concentrations of imidacloprid on Eastern School Prawn (Metapenaeus macleayi), an important exploited crustacean in Australia. Prawns were held for 8 days in estuarine water containing 0¿4 µg L-1 of imidacloprid to assess potential lethal and non-lethal impacts. There was a non-linear relationship between exposure concentration and tissue concentration, with tissue concentrations peaking at exposures of 1.4 µg L-1 (1.16 to 1.64 µg L-1, 90% C.I.). There was no evidence for direct mortality associated with imidacloprid exposure, but exposure did influence the organism metabolome which likely reflects alterations in metabolic homeostasis, such as changes in the fatty acid composition which indicate a shift in lipid homeostasis. There was a positive correlation between exposure concentration and moulting frequency. Shedding of the exoskeleton may represent a mechanism through which prawns can expel the contaminant from their bodies. These results indicate that prawns experience several different sub-lethal effects when exposed to these pesticides, which may have implications for the health of populations.
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2020 |
Bennett MA, Becker A, Gaston T, Taylor MD, 'Connectivity of Large-Bodied Fish with a Recovering Estuarine Tidal Marsh, Revealed Using an Imaging Sonar', Estuaries and Coasts, (2020) © 2020, Coastal and Estuarine Research Federation. Tidal wetlands represent important fish habitats, particularly as nurseries for many exploited species. However, usage of these ... [more] © 2020, Coastal and Estuarine Research Federation. Tidal wetlands represent important fish habitats, particularly as nurseries for many exploited species. However, usage of these habitats by large-bodied fish is poorly studied. Imaging sonar represents a relatively novel technology for ecologists and allows for the discrete observation of fish in conditions where a light-based camera is ineffective, such as turbid estuarine habitats. An imaging sonar uses sound waves to create video-like images where swimming direction, fish length and distance from the sonar can be inferred. This technology was applied to examine connectivity of large-bodied fish between a recovering Ramsar-listed wetland and the adjacent estuary, by censusing fish traversing the entrance to the wetland. Fish lengths ranged between ~ 8 and 109¿cm. More fish were observed traversing the entrance to the wetland during the day (~ 365¿fish¿h-1) compared with night (~ 198¿fish¿h-1), possibly as a predator avoidance strategy. Under some conditions, biomass flux of large-bodied fish was estimated to exceed 100¿kg¿fish¿h-1. Fish did not appear to have a consistent preference for moving with or against the flow of the tide. These novel findings highlight the utility of imaging sonar for conducting fish census in wetland habitats and also highlights that wetlands are valuable habitats for large-bodied fish.
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2020 |
Martin CL, Momtaz S, Gaston T, Moltschaniwskyj NA, 'Mapping the intangibles: Cultural ecosystem services derived from Lake Macquarie estuary, New South Wales, Australia', Estuarine, Coastal and Shelf Science, 243 (2020) [C1]
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2020 |
Park JM, Powell NN, Gillings MR, Gaston TF, Williamson JE, 'Phylogeny and form in fishes: Genetic and morphometric characteristics of dragonets (Foetorepus sp.) do not align', ACTA ZOOLOGICA, 101 218-226 (2020) [C1]
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2020 |
Raoult V, Trueman CN, Kingsbury KM, Gillanders BM, Broadhurst MK, Williamson JE, et al., 'Predicting Geographic Ranges of Marine Animal Populations Using Stable Isotopes: A Case Study of Great Hammerhead Sharks in Eastern Australia', FRONTIERS IN MARINE SCIENCE, 7 (2020) [C1]
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2020 |
Broadhurst MK, Tolhurst DJ, Hughes B, Raoult V, Smith TM, Gaston TF, 'Optimising mesh size with escape gaps in a dual-species portunid-trap fishery', Aquaculture and Fisheries, 5 308-316 (2020) [C1] © 2019 Shanghai Ocean University In south-eastern Australia, the same baited, round traps (comprising 50¿57-mm mesh netting) are used to target giant mud, Scylla serrata and blue ... [more] © 2019 Shanghai Ocean University In south-eastern Australia, the same baited, round traps (comprising 50¿57-mm mesh netting) are used to target giant mud, Scylla serrata and blue swimmer crabs, Portunus armatus in spatially separated fisheries. Both fisheries are characterised by the common, problematic discarding of undersized portunids (<85 and 65 mm carapace length; CL for S. serrata and P. armatus) and fish (yellowfin bream, Acanthopagrus australis). This poor selectivity was addressed here in two experiments assessing the utility of (1) traps partially or completely covered in larger mesh (91 mm to match the minimum legal size of the smaller P. armatus), and then (2) any cumulative benefits of fitting species-specific escape gaps. In experiment 1, there were no differences among catches of legal-sized portunids associated with either partial, or complete trap coverage with larger mesh. Irrespective of mesh coverage, both designs of 91-mm traps also retained significantly fewer (by up to 42%) undersized P. armatus and A. australis. In experiment 2, replicate traps completely covered in 91-mm mesh were tested against conventional traps comprising 56-mm mesh, and traps with the same mesh sizes, but also three escape gaps configured for either S. serrata (46 × 120 mm) or P. armatus (36 × 120 mm) (i.e. four treatments in total). All modified traps maintained catches of legal-sized S. serrata, and only the 91-mm traps with escape gaps caught fewer legal-sized P. armatus. Fewer undersized S. serrata, P. armatus and A. australis (mean catches reduced by up to 49%) were retained in all larger-meshed than small-meshed traps, and in all of those traps with escape gaps (by up to 95%) than without. While there were no significant cumulative benefits of escape gaps in larger-meshed traps (measured by a statistical interaction), there was a trend of fewer unwanted catches overall. These data support configuring portunid traps with mesh sizes matching the morphology of the smallest legal-sized target species. But, simply retroactively fitting escape gaps in existing, smaller-meshed traps will also realize positive selectivity benefits.
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2020 |
Hewitt DE, Smith TM, Raoult V, Taylor MD, Gaston TF, 'Stable isotopes reveal the importance of saltmarsh-derived nutrition for two exploited penaeid prawn species in a seagrass dominated system', Estuarine, Coastal and Shelf Science, 236 (2020) [C1]
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2020 |
Martin CL, Momtaz S, Gaston T, Moltschaniwskyj NA, 'Estuarine cultural ecosystem services valued by local people in New South Wales, Australia, and attributes important for continued supply', Ocean and Coastal Management, 190 (2020) [C1]
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2020 |
Mcluckie C, Moltschaniwskyj N, Gaston T, Dunstan RH, Crompton M, Taylor MD, 'Lethal and sublethal effects of simultaneous exposure to hypoxia and aluminium on juvenile eastern school prawn', Marine and Freshwater Research, 71 697-707 (2020) [C1]
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2020 |
Turnbull OMH, Ortiz-Baez AS, Eden JS, Shi M, Williamson JE, Gaston TF, et al., 'Meta-Transcriptomic Identification of Divergent Amnoonviridae in Fish', Viruses, 12 (2020) [C1] Tilapia lake virus (TiLV) has caused mass mortalities in farmed and wild tilapia with serious economic and ecological consequences. Until recently, this virus was the sole member ... [more] Tilapia lake virus (TiLV) has caused mass mortalities in farmed and wild tilapia with serious economic and ecological consequences. Until recently, this virus was the sole member of the Amnoonviridae, a family within the order Articulavirales comprising segmented negative-sense RNA viruses. We sought to identify additional viruses within the Amnoonviridae through total RNA sequencing (meta-transcriptomics) and data mining of published transcriptomes. Accordingly, we sampled marine fish species from both Australia and China and discovered several segments of two new viruses within the Amnoonviridae, tentatively called Flavolineata virus and Piscibus virus, respectively. In addition, by mining vertebrate transcriptome data, we identified nine additional virus transcripts matching to multiple genomic segments of TiLV in both marine and freshwater fish. These new viruses retained sequence conservation with the distantly related Orthomyxoviridae in the RdRp subunit PB1, but formed a distinct and diverse phylogenetic group. These data suggest that the Amnoonviridae have a broad host range within fish and that greater animal sampling will identify additional divergent members of the Articulavirales.
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2020 |
McLuckie C, Moltschaniwskyj N, Gaston T, Dunstan RH, Crompton M, Taylor MD, 'Survival, Growth, and Metabolic Changes in Eastern School Prawn (Metapenaeus macleayi) across a Spectrum of Salinities', Thalassas, (2020) © 2020, Crown. Variation in salinity is one of the principal changes in estuarine physicochemistry that can impact the productivity of estuarine species. The effect of salinity on... [more] © 2020, Crown. Variation in salinity is one of the principal changes in estuarine physicochemistry that can impact the productivity of estuarine species. The effect of salinity on the mortality, growth, and metabolite profiles of juvenile Eastern School Prawn (Metapenaeus macleayi) was evaluated across a salinity gradient ranging from 0.2¿36 over 60¿days. Survival was >70% for salinity treatments other than the lowest salinity. Survival was 0% in the lowest salinity and all prawns had died within 3¿days. Salinity did not appear to impact relative growth across the range of salinities examined. In contrast, relative somatic condition was greater at lower salinities and was negatively correlated with salinity, indicating lower salinities promote enhanced somatic condition in School Prawn. Total fatty acid concentration showed no relationship with salinity or somatic condition index. However, total fatty acid concentration did have a significant positive relationship with total amino acid concentration. Total amino acid concentration showed no linear relationship with salinity or somatic condition index. Quantitative profiling of individual fatty acids and amino acids showed some changes in response to salinity. Alpha-aminoadipic acid showed a significant positive relationship with salinity. These complex patterns suggest several shifts in cellular chemistry may occur throughout the salinity range investigated, potentially with metabolic consequences. These results highlight the complex responses of estuarine crustaceans to changes in salinity.
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2019 |
Raoult V, Broadhurst MK, Peddemors VM, Williamson JE, Gaston TF, 'Resource use of great hammerhead sharks (Sphyrna mokarran) off eastern Australia', JOURNAL OF FISH BIOLOGY, 95 1430-1440 (2019) [C1]
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2019 |
Quaas Z, Harasti D, Gaston TF, Platell ME, Fulton CJ, 'Influence of habitat condition on shallow rocky reef fish community structure around islands and headlands of a temperate marine protected area', Marine Ecology Progress Series, 626 1-13 (2019) [C1]
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2019 |
Young HJ, Raoult V, Platell ME, Williamson JE, Gaston TF, 'Within-genus differences in catchability of elasmobranchs during trawling', Fisheries Research, 211 141-147 (2019) [C1]
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2019 |
Raoult V, Williamson JE, Smith TM, Gaston TF, 'Effects of on-deck holding conditions and air exposure on post-release behaviours of sharks revealed by a remote operated vehicle', Journal of Experimental Marine Biology and Ecology, 511 10-18 (2019) [C1]
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2019 |
Broadhurst MK, Smith TM, Millar RB, Hughes B, Raoult V, Gaston TF, 'Cumulative selectivity benefits of increasing mesh size and using escape gaps in Australian Portunus armatus traps', Fisheries Management and Ecology, 26 319-326 (2019) [C1]
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2018 |
Raoult V, Gaston TF, 'Rapid biomass and size-frequency estimates of edible jellyfish populations using drones', Fisheries Research, 207 160-164 (2018) [C1]
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2018 |
Taylor MD, Becker A, Moltschaniwskyj NA, Gaston TF, 'Direct and Indirect Interactions Between Lower Estuarine Mangrove and Saltmarsh Habitats and a Commercially Important Penaeid Shrimp', ESTUARIES AND COASTS, 41 815-826 (2018) [C1]
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2018 |
Corry M, Harasti D, Gaston T, Mazumder D, Cresswell T, Moltschaniwskyj N, 'Functional role of the soft coral Dendronephthya australis in the benthic food web of temperate estuaries', MARINE ECOLOGY PROGRESS SERIES, 593 61-72 (2018) [C1]
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2018 |
Richards RJ, Raoult V, Powter DM, Gaston TF, 'Permanent magnets reduce bycatch of benthic sharks in an ocean trap fishery', Fisheries Research, 208 16-21 (2018) [C1]
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2018 |
Raoult V, Gaston TF, Taylor MD, 'Habitat fishery linkages in two major south-eastern Australian estuaries show that the C4 saltmarsh plant Sporobolus virginicus is a significant contributor to fisheries productivity', Hydrobiologia, 811 221-238 (2018) [C1]
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2018 |
Taylor MD, Gaston TF, Raoult V, 'The economic value of fisheries harvest supported by saltmarsh and mangrove productivity in two Australian estuaries', ECOLOGICAL INDICATORS, 84 701-709 (2018) [C1]
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2018 |
Hart C, Gaston TF, Taylor MD, 'Utilisation of a recovering wetland by a commercially important species of penaeid shrimp', WETLANDS ECOLOGY AND MANAGEMENT, 26 665-675 (2018) [C1]
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2018 |
Park JM, Gaston TF, Riedel R, Williamson JE, 'Biometric relationships between body and otolith measurements in nine demersal fishes from north-eastern Tasmanian waters, Australia', Journal of Applied Ichthyology, 34 801-805 (2018) [C1]
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2017 |
Park JM, Coburn E, Platell ME, Gaston TF, Taylor MD, Williamson JE, 'Diets and Resource Partitioning among Three Sympatric Gurnards in Northeastern Tasmanian Waters, Australia', MARINE AND COASTAL FISHERIES, 9 305-319 (2017) [C1]
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2017 |
Park JM, Gaston TF, Williamson JE, 'Resource partitioning in gurnard species using trophic analyses: The importance of temporal resolution', Fisheries Research, 186 301-310 (2017) [C1] © 2016 Elsevier B.V. Dietary habits and intra- and inter-specific trophic ecology of co-occurring Lepidotrigla mulhalli and L. vanessa from south-eastern Australia were analysed u... [more] © 2016 Elsevier B.V. Dietary habits and intra- and inter-specific trophic ecology of co-occurring Lepidotrigla mulhalli and L. vanessa from south-eastern Australia were analysed using stomach content and stable isotope ratios (d13C and d15N). Both species are bottom-feeding carnivores that consumed mainly benthic crustaceans, but teleosts were also abundant in the diet of larger L. vanessa. Non-metric multidimensional scaling (nMDS) ordination and analysis of similarity (ANOSIM) of dietary data revealed significant inter-specific dietary differences; i.e. food resource partitioning. Carbon (d13C) and nitrogen (d15N) stable isotope values were similar between L. mulhalli and L. vanessa, however, suggesting similar trophic positioning. Ontogenetic changes in diet composition and stable isotope values were evident. As L. vanessa grew, they preyed upon larger individuals, such as teleosts and caridean shrmips, but no such trend was observed in the diets of L. mulhalli. Adults of both species were significantly enriched in 15N relative to juvenile conspecifics thus supporting these data. Consequently, in this study, both methodologies, i.e. stomach content and stable isotope analyses, provided evidence of inter- and/or intra-specific dietary segregations and trophic niche partitioning between co-occurring L. mulhalli and L. vanessa off Tasmanian waters.
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2016 |
Martin CL, Momtaz S, Gaston T, Moltschaniwskyj NA, 'A systematic quantitative review of coastal and marine cultural ecosystem services: Current status and future research', Marine Policy, 74 25-32 (2016) [C1] © 2016 Cultural ecosystem services (CES) are the non-material benefits obtained from ecosystems that contribute to human well-being. They are often under-represented in ecosystem ... [more] © 2016 Cultural ecosystem services (CES) are the non-material benefits obtained from ecosystems that contribute to human well-being. They are often under-represented in ecosystem services assessments due to difficulties identifying and valuing intangible attributes. This risks a lack of understanding and consideration of CES by decision-makers. A systematic review was done on coastal and marine CES to identify: geographic distribution of research; effective methods for assessing CES; specific habitats/ecosystems that supply CES; subcategories most frequently addressed; and knowledge gaps. Results revealed limited information exists about coastal and marine CES. There is a disparity in the global distribution of studies with little knowledge about CES in developing countries, as well as a disparity within developed countries; with most research undertaken in Europe and North America. There is a dearth of information on CES derived from specific coastal and marine habitats/ecosystems, reflecting a poor understanding of socio-ecological relationships and the different values people assign to these areas. There is a need to develop indicators with the capacity to measure and track changes in CES over time. Participatory approaches using qualitative methods were most effective in identifying CES; however, these lacked a deliberative element that would provide a comprehensive assessment of shared values in public areas. Overall, publications typically theorised about the usefulness of data on CES to inform and support decision makers, and more research is required on how qualitative data on CES can be represented for practical use by coastal and marine resource managers, and the value of these in the real world.
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2016 |
Remon J, Bower DS, Gaston TF, Clulow J, Mahony MJ, 'Stable isotope analyses reveal predation on amphibians by a globally invasive fish (Gambusia holbrooki)', Aquatic Conservation: Marine and Freshwater Ecosystems, 26 724-735 (2016) [C1] Copyright © 2016 John Wiley & Sons, Ltd. Biodiversity loss caused by invasive species is particularly problematic in freshwater ecosystems, which are among the world's ... [more] Copyright © 2016 John Wiley & Sons, Ltd. Biodiversity loss caused by invasive species is particularly problematic in freshwater ecosystems, which are among the world's most threatened habitats. Invasive fish such as the eastern mosquitofish, Gambusia holbrooki, have been implicated in the decline of amphibians, which suffer high extinction rates globally. Although G. holbrooki is one of the most studied freshwater fish, its diet shows wide geographic variation and its impact on amphibian populations remains unclear. Stable isotopes 13C and 15N were used in 10 urban ponds in Sydney, Australia to compare the diet of G. holbrooki in January, April and May 2013 using a stable isotope mixing model. Gambusia holbrooki was carnivorous and fed on invertebrates (24¿39%), tadpoles (25¿32%) and conspecifics (20¿45%). In contrast to previous studies, primary producers were a negligible part of Gambusia holbrooki diet (<10%). Its diet in late autumn comprised a high proportion of conspecifics (up to 45%) owing to the depletion of other food sources before winter (metamorphosis of larvae). This study provides evidence of high rates of predation on native tadpoles and invertebrates by a highly invasive fish. This knowledge should be incorporated into amphibian releases through head-starting tadpoles or using soft releases where tadpoles are placed in predator-free enclosures until larvae are large enough to avoid predation. Considering the dire conservation status of amphibians globally and the growing interest for invertebrates, it is suggested that stable isotopes are valuable to identify threats from predation in order to target conservation practice toward suitable priorities. Copyright © 2016 John Wiley & Sons, Ltd.
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2015 |
Raoult V, Gaston TF, Williamson JE, 'Not all sawsharks are equal: Species of co-existing sawsharks show plasticity in trophic consumption both within and between species', Canadian Journal of Fisheries and Aquatic Sciences, 72 1769-1775 (2015) [C1] © 2015, National Research Council of Canada. All rights reserved. Despite the global distribution of sawsharks, little is known about their diets or their role in the marine biosp... [more] © 2015, National Research Council of Canada. All rights reserved. Despite the global distribution of sawsharks, little is known about their diets or their role in the marine biosphere. As species in higher trophic positions are generally considered to be more at risk to perturbations such as fishing, understanding their role in the food chain will enable better conservation and management strategies for these species. Two sawshark species (Pristiophorus cirratus, Pristiophorus nudipinnis) co-occur in waters off east Tasmania, Australia. This study determined the trophic positions of these sawsharks and whether they avoided competing with each other through resource partitioning. Isotopic analysis of muscle tissue revealed that P. cirratus and P. nudipinnis had significantly different trophic levels, with P. cirratus likely to have a diet of primary consumers and P. nudipinnis likely to have a piscivorous diet. Owing to their different isotopic signatures, it is also likely that the sawshark rostrum has multiple functions. Both species shifted to higher trophic levels during ontogeny. Maternal isotopic signatures were detectable in P. cirratus juveniles.
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2014 |
Hunt DE, Maynard DL, Gaston TF, 'Tailoring codend mesh size to improve the size selectivity of undifferentiated trawl species', Fisheries Management and Ecology, 21 503-508 (2014) [C1] © 2014 John Wiley & Sons Ltd. Tiger flathead, Neoplatycephalus richardsoni (Castelnau), and sand flathead, Platycephalus bassensis Cuvier, are undifferentiated and managed w... [more] © 2014 John Wiley & Sons Ltd. Tiger flathead, Neoplatycephalus richardsoni (Castelnau), and sand flathead, Platycephalus bassensis Cuvier, are undifferentiated and managed with a common legal minimum length (LML). The Commonwealth Trawl Sector (CTS) and the Tasmanian Danish-seine fishery (TDSF) use a minimum codend mesh sizes of 90 and 70 mm, respectively. The codend mesh size should be tailored to the LML, which is based on the length of first maturity of females (M50). This study found the length-girth relationship of N. richardsoni and P. bassensis was not significantly different. Using the covered codend method, these two species had 50% retention lengths (L50) of 294 ± 2 and 307 ± 3 mm, in 70-mm and 90-mm codends, respectively. L50 estimates for mesh sizes from this study and others produced a curvilinear relationship: y = 120 ln(x) - 214, with an r2 of 0.8504. The size at maturity (M50) for female N. richardsoni was 337 mm, which is larger than the estimate for female P. bassensis (247 mm). There is a mismatch between the estimates of L50, the estimates of M50 and the LMLs in each fishery, leading to suboptimal exploitation of female Platycephalus. The model produced in this paper recommends a codend mesh size of 98 mm for both fisheries to exploit Platycephalus species sustainably.
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2014 |
Perraton SC, Blackwell BD, Fischer A, Gaston TF, Meyers GD, 'Systemic barriers to wastewater reuse in Australia: some jurisdictional examples', Australasian Journal of Environmental Management, (2014) [C1] This article describes the regulatory framework and assessment process of urban wastewater reuse in two distinct regions of Australia, the Tamar Valley in northern Tasmania and th... [more] This article describes the regulatory framework and assessment process of urban wastewater reuse in two distinct regions of Australia, the Tamar Valley in northern Tasmania and the Hunter region of New South Wales. Relative similarities are evident between human population, water availability and recent necessity for reuse feasibility assessments. In the Hunter, assessments informed a state government led catchment-scale water security strategy. In Launceston, the need for assessments stems from a condition of the environmental permits for individual facilities. Salient institutional, social, economic and political barriers mire the assessment process for, and success of, wastewater reuse. Distinct legal, policy and procedural differences exist between the two cases. Future reuse guidelines should identify the different drivers for wastewater reuse and avoid studies that meet administratively predetermined selection.
|
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2006 |
Gaston TF, Schlacher TA, Connolly RM, 'Flood discharges of a small river into open coastal waters: Plume traits and material fate', ESTUARINE COASTAL AND SHELF SCIENCE, 69 4-9 (2006)
|
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2005 |
Schlacher TA, Liddell B, Gaston TF, Schlacher-Hoenlinger M, 'Fish track wastewater pollution to estuaries', OECOLOGIA, 144 570-584 (2005)
|
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2004 |
Gaston TF, Suthers IM, 'Spatial variation in delta C-13 and delta N-15 of liver, muscle and bone in a rocky reef planktivorous fish: the relative contribution of sewage', JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY, 304 17-33 (2004)
|
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2004 |
Gaston TF, Kostoglidis A, Suthers IM, 'The C-13, N-15 and S-34 signatures of a rocky reef planktivorous fish indicate different coastal discharges of sewage', MARINE AND FRESHWATER RESEARCH, 55 689-699 (2004)
|
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Show 39 more journal articles |
Conference (3 outputs)
Year | Citation | Altmetrics | Link | ||
---|---|---|---|---|---|
2017 |
Wainwright DJ, Gaston T, Lord DB, MacDonald T, Brown W, 'Balancing Competing Objectives in Coastal Entrance Management', Australasian Coasts & Ports 2017: Working with Nature, Cairns, QLD (2017) [E1]
|
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2015 |
Bond D, Turner A, Richmond R, Sadeqzadeh E, Vuong Q, Bhuyan D, et al., 'THE SEARCH FOR NOVEL TREATMENT AGENTS FOR PANCREATIC CANCER: TALES FROM THE LAND AND SEA', ASIA-PACIFIC JOURNAL OF CLINICAL ONCOLOGY (2015) [E3]
|
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2014 |
Sadeqzadeh E, Vuong QV, Goldsmith CD, Nguyen VT, Bhuyan DJ, Trung TD, et al., 'A NATURAL PRODUCT DRUG DISCOVERY PIPELINE FOR NOVEL PANCREATIC CANCER THERAPIES: A NEW CANCER RESEARCH HUB FOR THE HUNTER REGION OF NSW', ASIA-PACIFIC JOURNAL OF CLINICAL ONCOLOGY (2014) [E3]
|
Grants and Funding
Summary
Number of grants | 61 |
---|---|
Total funding | $1,395,503 |
Click on a grant title below to expand the full details for that specific grant.
20211 grants / $39,739
Pacific Coral Reef Ecosystem Resilience to Ocean Acidification$39,739
Funding body: Secretariat of the Pacific Regional Environment Programme (SPREP)
Funding body | Secretariat of the Pacific Regional Environment Programme (SPREP) |
---|---|
Project Team | Associate Professor Bill Leggat, Doctor Sascha Fuller, Associate Professor Troy Gaston |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2021 |
Funding Finish | 2022 |
GNo | G2001322 |
Type Of Funding | C3212 - International Not for profit |
Category | 3212 |
UON | Y |
20204 grants / $332,460
Assessment of population dynamics, distribution and habitat use for the green and golden bell frog at Avoca$215,000
Funding body: Central Coast Council
Funding body | Central Coast Council |
---|---|
Project Team | Professor Matthew Hayward, Associate Professor Troy Gaston, Doctor Andrea Griffin, Doctor Alex Callen |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2020 |
Funding Finish | 2023 |
GNo | G2000788 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Tuggerah Lakes Seahorse Assessment$70,000
Funding body: Central Coast Council
Funding body | Central Coast Council |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Mr David Harasti |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2020 |
Funding Finish | 2021 |
GNo | G2000794 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Climate ready aquaculture monitoring$40,000
Funding body: NSW Department of Local Land Services - Hunter
Funding body | NSW Department of Local Land Services - Hunter |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult |
Scheme | Regional Land Partnership Program |
Role | Lead |
Funding Start | 2020 |
Funding Finish | 2023 |
GNo | G2000781 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Predicting the effects of climate change on seagrass fish communities$7,460
Funding body: Lake Macquarie City Council
Funding body | Lake Macquarie City Council |
---|---|
Project Team | Doctor Margaret Platell, Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith |
Scheme | Lake Macquarie Environmental Research Grant |
Role | Investigator |
Funding Start | 2020 |
Funding Finish | 2021 |
GNo | G2000126 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
20198 grants / $272,689
Knowledge for productivity: Phase I – Lake Wooloweyah$150,000
Funding body: Fisheries Research & Development Corporation (FRDC)
Funding body | Fisheries Research & Development Corporation (FRDC) |
---|---|
Project Team | Associate Professor Troy Gaston, A/Pro William Glamore, Dr Matt Taylor, Kylie Russell, Colin Creighton |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2019 |
Funding Finish | 2021 |
GNo | G1900971 |
Type Of Funding | C2110 - Aust Commonwealth - Own Purpose |
Category | 2110 |
UON | Y |
Developing National Liquid Waste Standards for Solomon Islands$29,552
Funding body: Secretariat of the Pacific Regional Environment Programme (SPREP)
Funding body | Secretariat of the Pacific Regional Environment Programme (SPREP) |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor David Wainwright, Doctor Craig Evans |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2019 |
Funding Finish | 2020 |
GNo | G1901408 |
Type Of Funding | C3212 - International Not for profit |
Category | 3212 |
UON | Y |
Quantifying habitat-fishery linkages in Lake Illawarra, NSW$25,653
Funding body: Wollongong City Council
Funding body | Wollongong City Council |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1801393 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Beachwatch audit - swimming safety - Bacteria/DNA testing for designated swimming sites in estuaries and lakes$21,375
Funding body: Central Coast Council
Funding body | Central Coast Council |
---|---|
Project Team | Doctor Megan Huggett, Associate Professor Troy Gaston, Associate Professor Bill Leggat |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1900562 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Oyster productivity and restoration in Wallis Creek$20,000
Funding body: NSW Department of Industry
Funding body | NSW Department of Industry |
---|---|
Project Team | Doctor Tim Smith, Doctor Vincent Raoult, Associate Professor Troy Gaston |
Scheme | Hunter Local Land Service |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1900771 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Indicators of River Health in the Georges River$10,909
Funding body: Georges River Council
Funding body | Georges River Council |
---|---|
Project Team | Doctor Geoff MacFarlane, Associate Professor Troy Gaston |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1901090 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Testing non-lethal deterrents to rays that predate on oyster$8,000
Funding body: Graham Barclay Oysters Pty Ltd
Funding body | Graham Barclay Oysters Pty Ltd |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2019 |
Funding Finish | 2020 |
GNo | G1901037 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
Aquatic recreational structures as ecologically important habitats$7,200
Funding body: Lake Macquarie City Council
Funding body | Lake Macquarie City Council |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith |
Scheme | Lake Macquarie Environmental Research Grant |
Role | Lead |
Funding Start | 2019 |
Funding Finish | 2020 |
GNo | G1801424 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
201818 grants / $322,126
Linking ecosystem services to the profitability of prawn fisheries$118,068
Funding body: Fisheries Research & Development Corporation (FRDC)
Funding body | Fisheries Research & Development Corporation (FRDC) |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Dr Ian Creswell, Dr Anthony O'Grady, Dr Becky Schmidt, Dr Matt Taylor |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2020 |
GNo | G1800830 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Provision of developing GIS layers on water quality and ecological services$27,150
Funding body: Infrastructure NSW (iNSW)
Funding body | Infrastructure NSW (iNSW) |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith |
Scheme | NSW Government PMS Prequalification Scheme |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800813 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Improving adoptions of sustainable crab trap designs$22,000
Funding body: Local Land Services
Funding body | Local Land Services |
---|---|
Project Team | Doctor Tim Smith, Associate Professor Troy Gaston, Doctor Vincent Raoult, Matt Broadhurst |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2020 |
GNo | G1800580 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Do oyster farms benefit estuarine fisheries in Wallis Lake?$20,000
Funding body: MidCoast Council
Funding body | MidCoast Council |
---|---|
Project Team | Doctor Tim Smith, Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Margaret Platell |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2019 |
GNo | G1800934 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Trophic ecology and geographic patterns of Great Hammerhead Sharks (Sphyrna mokarran) of eastern Australia$19,200
Funding body: Sea World Research and Rescue Foundation Inc
Funding body | Sea World Research and Rescue Foundation Inc |
---|---|
Project Team | Doctor Vincent Raoult, Associate Professor Troy Gaston, Associate Professor Jane Williamson, Assistant Professor Vic Peddermors, Peddemors, Vic, Williamson, Jane |
Scheme | Marine Vertebrate Grants |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1700744 |
Type Of Funding | C3112 - Aust Not for profit |
Category | 3112 |
UON | Y |
Fish assemblages and dominant primary producers in Wallaga Lake NSW$17,655
Funding body: Bega Valley Shire Council
Funding body | Bega Valley Shire Council |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800030 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Event-based Characterisation of Inflows and Potential Water Quality Implications for Chichester Reservoir$17,163
Funding body: Hunter Water Corporation
Funding body | Hunter Water Corporation |
---|---|
Project Team | Doctor Craig Evans, Doctor Margaret Platell, Associate Professor Troy Gaston, Dr Abigail Morrow |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800859 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Tracking the impacts of sewage overflows on ecosystem function using novel techniques$15,000
Funding body: Hunter Water Corporation
Funding body | Hunter Water Corporation |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Megan Huggett |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800079 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Metabolomic effects of imidicloprid insecticides on school prawns$10,000
Funding body: Department of Industry
Funding body | Department of Industry |
---|---|
Project Team | Associate Professor Troy Gaston |
Scheme | Hunter Local Land Services |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2019 |
GNo | G1800940 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Identifying indicators of restoration success in saltmarshes$9,200
Funding body: Newcastle Coal Infrastructure Group (NCIG)
Funding body | Newcastle Coal Infrastructure Group (NCIG) |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Anita Chalmers |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2019 |
GNo | G1800844 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
Fish assemblages of the Gosford coastal lagoons$8,000
Funding body: Central Coast Council
Funding body | Central Coast Council |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith, Doctor Margaret Platell |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800563 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Emerging technologies for monitoring of water quality and ecosystem health$7,820
Funding body: Lake Macquarie City Council
Funding body | Lake Macquarie City Council |
---|---|
Project Team | Doctor Megan Huggett, Associate Professor Troy Gaston, Associate Professor Bill Leggat |
Scheme | Lake Macquarie Environmental Research Grant |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2019 |
GNo | G1800202 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Effect of temperature on seagrass flowering and reproduction in Lake Macquarie$6,382
Funding body: Lake Macquarie City Council
Funding body | Lake Macquarie City Council |
---|---|
Project Team | Doctor Tim Smith, Associate Professor Troy Gaston, Tim Glasby, Tim Glasby |
Scheme | Lake Macquarie Environmental Research Grant |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2019 |
GNo | G1800218 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Spatial and temporal variability of salinity in coastal lagoons$6,000
Funding body: Central Coast Council
Funding body | Central Coast Council |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith |
Scheme | Small Research Consultancy |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800767 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Impacts of sewage overflows on ecosystem function in the estuarine lake$5,000
Funding body: AINSE (Australian Institute of Nuclear Science & Engineering)
Funding body | AINSE (Australian Institute of Nuclear Science & Engineering) |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Megan Huggett, Debashish Mazumder, Ms Alessandra Suzzi |
Scheme | Honours Scholarship |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800741 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
Fish assemblages and dominant primary producers in Wallaga Lake NSW$5,000
Funding body: NSW Department of Primary Industries
Funding body | NSW Department of Primary Industries |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800757 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Autumn survey of MARL (Marine Aquaculture Research Lease)$4,488
Funding body: NSW Department of Primary Industries
Funding body | NSW Department of Primary Industries |
---|---|
Project Team | Doctor Margaret Platell, Associate Professor Troy Gaston, Associate Professor Troy Gaston |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2019 |
GNo | G1801217 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
How does motion affect the shape and growth of Sydney Rock Oysters?$4,000
Funding body: Select Oyster Company
Funding body | Select Oyster Company |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Tim Smith, Doctor Vincent Raoult, Emma Wilkie |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800868 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
20179 grants / $156,382
Yellowtail Kingfish Seacage Compliance Monitoring$57,708
Funding body: Huon Aquaculture
Funding body | Huon Aquaculture |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Margaret Platell |
Scheme | Research Consultancy |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2019 |
GNo | G1701187 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
Ecological assessment of Stockton Beach sand nourishment works$19,600
Funding body: Newcastle City Council
Funding body | Newcastle City Council |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith, Doctor Margaret Platell |
Scheme | Small Research Consultancy |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2018 |
GNo | G1701457 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Reassessment of the fish populations and potential implications for ecosystem function in Grahamstown Reservoir$18,375
Funding body: Hunter Water Corporation
Funding body | Hunter Water Corporation |
---|---|
Project Team | Doctor Craig Evans, Doctor Margaret Platell, Associate Professor Troy Gaston |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2017 |
Funding Finish | 2019 |
GNo | G1701361 |
Type Of Funding | C2110 - Aust Commonwealth - Own Purpose |
Category | 2110 |
UON | Y |
Gosford Lagoon and Creek Entrance Management Review $14,050
Funding body: Salients Pty Ltd
Funding body | Salients Pty Ltd |
---|---|
Project Team | Associate Professor Troy Gaston |
Scheme | Small Research Consultancy |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1700743 |
Type Of Funding | Scheme excluded from IGS |
Category | EXCL |
UON | Y |
Delineating the effects of wastewater effluent and recycled wastewater in estuarine systems$10,000
Funding body: Water Research Australia
Funding body | Water Research Australia |
---|---|
Project Team | Associate Professor Troy Gaston, Mr David Workman |
Scheme | Honours Scholarship |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1700227 |
Type Of Funding | C3120 - Aust Philanthropy |
Category | 3120 |
UON | Y |
Identifying indicators of restoration success in saltmarshes$10,000
Funding body: NSW Department of Primary Industries (Fisheries)
Funding body | NSW Department of Primary Industries (Fisheries) |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Anita Chalmers, Kylie Russell, Craig Copeland, Dr Matt Taylor |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1701111 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Nutrient source tracking of groundwater using stable isotopes at Tanilba Bay$9,911
Funding body: Hunter Water Corporation
Funding body | Hunter Water Corporation |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith |
Scheme | Small Research Consultancy |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2020 |
GNo | G1701422 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Distribution of the rare and endemic soft coral Dendronephthya australis in the Brisbane Water estuary$9,620
Funding body: Central Coast Council
Funding body | Central Coast Council |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith |
Scheme | Protection of the Environment Trust Project Grant |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2018 |
GNo | G1700829 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Is there enhancement, depletion or trophic subsidy of local rocky reefs by seacage aquaculture? $7,118
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Margaret Platell, Doctor Vincent Raoult, Doctor Tim Smith |
Scheme | Ourimbah Strategic Pilot Grant |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1701266 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20162 grants / $23,600
School Prawn Productivity Study$18,600
Funding body: James Cook University
Funding body | James Cook University |
---|---|
Project Team | Associate Professor Troy Gaston, Dr Matt Taylor |
Scheme | Research Project |
Role | Lead |
Funding Start | 2016 |
Funding Finish | 2016 |
GNo | G1601192 |
Type Of Funding | Other Public Sector - State |
Category | 2OPS |
UON | Y |
Tropic fractionation and turnover by estuarine crabs: stable isotope evidence to support field studies$5,000
Funding body: AINSE (Australian Institute of Nuclear Science & Engineering)
Funding body | AINSE (Australian Institute of Nuclear Science & Engineering) |
---|---|
Project Team | Associate Professor Troy Gaston, Debashish Mazumder, Cherie Colyer-Morris |
Scheme | Honours Scholarship |
Role | Lead |
Funding Start | 2016 |
Funding Finish | 2016 |
GNo | G1600688 |
Type Of Funding | Grant - Aust Non Government |
Category | 3AFG |
UON | Y |
20156 grants / $93,818
Williams River Catchment Improvement Program$49,128
Funding body: Hunter Water Corporation
Funding body | Hunter Water Corporation |
---|---|
Project Team | Associate Professor Troy Gaston, Conjoint Professor Natalie Moltschaniwskyj, Doctor Anita Chalmers, Debashish Mazumder |
Scheme | Research Consultancy |
Role | Lead |
Funding Start | 2015 |
Funding Finish | 2015 |
GNo | G1501235 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Hunter River Isotope Study$24,300
Funding body: NSW Department of Primary Industries (Fisheries)
Funding body | NSW Department of Primary Industries (Fisheries) |
---|---|
Project Team | Associate Professor Troy Gaston |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2015 |
Funding Finish | 2017 |
GNo | G1501366 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Beach macrofauna as an indicator of anthropogenic derived nutrients in the Hunter Catchment$10,000
Funding body: Water Research Australia
Funding body | Water Research Australia |
---|---|
Project Team | Associate Professor Troy Gaston, Mr Angus Fanning |
Scheme | Postgraduate Scholarships |
Role | Lead |
Funding Start | 2015 |
Funding Finish | 2015 |
GNo | G1401315 |
Type Of Funding | Donation - Aust Non Government |
Category | 3AFD |
UON | Y |
Mapping immaterial social values associated with Lake Macquarie estuary$3,890
Funding body: Lake Macquarie City Council
Funding body | Lake Macquarie City Council |
---|---|
Project Team | Ms Carol Martin, Conjoint Professor Natalie Moltschaniwskyj, Associate Professor Salim Momtaz, Associate Professor Troy Gaston |
Scheme | Lake Macquarie Environmental Research Grant |
Role | Investigator |
Funding Start | 2015 |
Funding Finish | 2015 |
GNo | G1500097 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Efficacy of sanctuary zones in NSW estuaries$3,500
Funding body: NSW Department of Primary Industries
Funding body | NSW Department of Primary Industries |
---|---|
Project Team | Associate Professor Troy Gaston, Conjoint Professor Natalie Moltschaniwskyj, Mr David Harasti |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2015 |
Funding Finish | 2017 |
GNo | G1500547 |
Type Of Funding | Other Public Sector - State |
Category | 2OPS |
UON | Y |
The functional role of the soft coral, Dendronephthya australis, in the benthic food web of temperate estuaries$3,000
Funding body: NSW Department of Primary Industries
Funding body | NSW Department of Primary Industries |
---|---|
Project Team | Conjoint Professor Natalie Moltschaniwskyj, Associate Professor Troy Gaston, Mr David Harasti, Debashish Mazumder |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2015 |
Funding Finish | 2015 |
GNo | G1500110 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
20148 grants / $108,348
Identification and evaluation of anti-pancreatic cancer activity of cytotoxic compounds extracted from Australian sea sponges: a pilot study$20,500
Funding body: Hunter Medical Research Institute
Funding body | Hunter Medical Research Institute |
---|---|
Project Team | Professor Christopher Scarlett, Doctor Quan Vuong, Doctor Jude Weidenhofer, Doctor Rick Thorne, Professor Michael Bowyer, Associate Professor Troy Gaston |
Scheme | Project Grant |
Role | Investigator |
Funding Start | 2014 |
Funding Finish | 2015 |
GNo | G1401452 |
Type Of Funding | Grant - Aust Non Government |
Category | 3AFG |
UON | Y |
Postgraduate Scholarship$20,000
Funding body: Water Research Australia
Funding body | Water Research Australia |
---|---|
Project Team | Associate Professor Troy Gaston, Mr Daniel Kousbroek, Mr Richard Connor |
Scheme | Postgraduate Scholarships |
Role | Lead |
Funding Start | 2014 |
Funding Finish | 2014 |
GNo | G1400022 |
Type Of Funding | Grant - Aust Non Government |
Category | 3AFG |
UON | Y |
Intertidal shores as an indicator of anthropogenic derived nutrients using stable isotope analysis$17,780
Funding body: Hunter Water Corporation
Funding body | Hunter Water Corporation |
---|---|
Project Team | Associate Professor Troy Gaston, Doctor Louise McKenzie |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2014 |
Funding Finish | 2014 |
GNo | G1401274 |
Type Of Funding | Other Public Sector - State |
Category | 2OPS |
UON | Y |
Using artificial seagrass to restore ecosystem function and enhance recovery of an endangered population$13,500
Funding body: Equity Trustees Limited
Funding body | Equity Trustees Limited |
---|---|
Project Team | Ms Amanda Clarke, Associate Professor Troy Gaston |
Scheme | Holsworth Wildlife Research Endowment grant |
Role | Lead |
Funding Start | 2014 |
Funding Finish | 2016 |
GNo | G1400987 |
Type Of Funding | Grant - Aust Non Government |
Category | 3AFG |
UON | Y |
Stable isotope sampling in Lake Macquarie$11,108
Funding body: Hunter Water Corporation
Funding body | Hunter Water Corporation |
---|---|
Project Team | Associate Professor Troy Gaston, Dr Louise Mckenzie |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2014 |
Funding Finish | 2015 |
GNo | G1401353 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
The impact of habitat loss and rehabilitation on recruitment to the NSW eastern king prawn fishery$9,450
Funding body: NSW Department of Primary Industries
Funding body | NSW Department of Primary Industries |
---|---|
Project Team | Conjoint Professor Natalie Moltschaniwskyj, Associate Professor Troy Gaston, Dr Matt Taylor |
Scheme | Scholarship |
Role | Investigator |
Funding Start | 2014 |
Funding Finish | 2017 |
GNo | G1301447 |
Type Of Funding | Other Public Sector - State |
Category | 2OPS |
UON | Y |
Trophic subsidy of coastal waters by river discharge: stable isotope evidence from the Hunter River.$8,500
Funding body: University of Newcastle - Faculty of Science & IT
Funding body | University of Newcastle - Faculty of Science & IT |
---|---|
Project Team | Associate Professor Troy Gaston |
Scheme | Strategic Initiative Research Fund (SIRF) |
Role | Lead |
Funding Start | 2014 |
Funding Finish | 2014 |
GNo | G1401039 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
Spatial and temporal variability of seagrass stable isotope ratios. $7,510
Funding body: Lake Macquarie City Council
Funding body | Lake Macquarie City Council |
---|---|
Project Team | Associate Professor Troy Gaston, Conjoint Professor Natalie Moltschaniwskyj, Dr Matt Taylor |
Scheme | Lake Macquarie Environmental Research Grant |
Role | Lead |
Funding Start | 2014 |
Funding Finish | 2014 |
GNo | G1400100 |
Type Of Funding | Other Public Sector - Local |
Category | 2OPL |
UON | Y |
20134 grants / $36,371
Nutrient Sources of Tilligerry Creek Estuary, NSW, using Stable Isotope Analysis$14,890
Funding body: Hunter Water Corporation
Funding body | Hunter Water Corporation |
---|---|
Project Team | Associate Professor Troy Gaston |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2013 |
Funding Finish | 2013 |
GNo | G1301341 |
Type Of Funding | Other Public Sector - State |
Category | 2OPS |
UON | Y |
Multi-bioindiocator indices in fish: a novel indicator of water quality in estuaries$9,071
Funding body: Gosford City Council
Funding body | Gosford City Council |
---|---|
Project Team | Conjoint Professor Natalie Moltschaniwskyj, Associate Professor Troy Gaston, Professor Joseph Bidwell |
Scheme | Ecological Research Grant |
Role | Investigator |
Funding Start | 2013 |
Funding Finish | 2013 |
GNo | G1300412 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
Epifaunal community composition and trophic structure in seagrass beds along a metal contamination gradient in Lake Macquarie$7,410
Funding body: Lake Macquarie City Council
Funding body | Lake Macquarie City Council |
---|---|
Project Team | Professor Joseph Bidwell, Associate Professor Troy Gaston, Conjoint Professor Natalie Moltschaniwskyj, Doctor Maria Schreider |
Scheme | Lake Macquarie Environmental Research Grant |
Role | Investigator |
Funding Start | 2013 |
Funding Finish | 2013 |
GNo | G1200113 |
Type Of Funding | Other Public Sector - Local |
Category | 2OPL |
UON | Y |
Energy flows in estuarine systems: ecosystem function and trophic subsidies$5,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Associate Professor Troy Gaston |
Scheme | New Staff Grant |
Role | Lead |
Funding Start | 2013 |
Funding Finish | 2013 |
GNo | G1300802 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20121 grants / $9,970
Mapping nutrient sources in coastal lagoons and estuaries through sentinel species.$9,970
Funding body: University of Newcastle - Faculty of Science & IT
Funding body | University of Newcastle - Faculty of Science & IT |
---|---|
Project Team | Conjoint Professor Natalie Moltschaniwskyj, Associate Professor Troy Gaston, Doctor Maria Schreider |
Scheme | Strategic Initiative Research Fund (SIRF) |
Role | Investigator |
Funding Start | 2012 |
Funding Finish | 2012 |
GNo | G1401027 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
Research Supervision
Number of supervisions
Past Supervision
Year | Level of Study | Research Title | Program | Supervisor Type |
---|---|---|---|---|
2018 | Masters |
Spatial variability of δ15N and δ13C in symbiotic corals Primary production on coral reefs varies under changing conditions such as light and nutrient availability. Coral fragments and co-occurring macroalgae were collected along a depth gradient and at same depths around Hideaway Island, Vanuatu. The primary aim was to examine if there was a nutrient input around the island that could be detected in coral and macroalgae tissues using δ15N signatures. The second aim was to examine the effect of depth over the δ15N and δ13C signatures of benthic primary producers to investigate their nutrient source and trophic dynamics. The δ15N signatures did not show any trace of a nutrient input around the island. However, the chlorophyll a and <em>Symbiodinium</em> density from the coral <em>Montipora stellata</em> were the only indicators of a potential nutrient input around the island. Similarly, no effect of depth was found in the δ15N of the macroalgae, epiphytes, and <em>Symbiodinium</em> from <em>Stylophora pistillata</em>. The only effect of depth was a decrease in <em>Symbiodinium</em> density and in the δ13C values of macroalgae. We attribute these findings to <em>Symbiodinium</em> from <em>S. pistillata</em>, compensating for the decrease of nutrients as depth increases by decreasing the cell density but maintaining the chlorophyll a concentrations to satisfy the coral-host nutrient requirements. |
Marine Science, Macquarie University | Co-Supervisor |
2015 | PhD |
Application of light as a bycatch reduction device in prawn trawl fisheries Discarding is the practice of returning unwanted catch to the sea during commercial fishing. However, the discarding process is costly and time consuming and some fish bycatch species have a high post-capture mortality rate. Therefore, reducing bycatch and thus discarding is a major reason for ongoing research and development into Bycatch Reduction Devices (BRDs). This research presents a novel BRD that uses artificial light attached to the headline of commercial prawn trawl nets and insight into its effect on reducing the overall capture of fish bycatch. |
Marine Science, University of Tasmania | Co-Supervisor |
2015 | PhD |
Cross Jurisdictional Barriers to Effective Wastewater Reuse: Management of Wastewater Disposal, Water Quality Impacts, and Reform Opportunities for Australia Reduced wastewater disposal through reuse can provide improved environmental, economic and social outcomes. Under the Australian Constitution, states and territories have the power to make laws over water and therefore there is considerable variation in the approaches taken by various Australian jurisdictions to urban wastewater management, urban water industry governance, and the management of discharge environments including recreational water. This thesis considers whether urban water governance, environmental regulation and recreational water quality management impact decisions to either reuse urban wastewater or dispose of it to the environment, and identifies opportunities for reform. |
Marine Science, University of Tasmania | Principal Supervisor |
News
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June 5, 2020
Magnets prove repellent to sharks and rays
July 26, 2018
UON Central Coast research boosted with strategic grants
August 22, 2017
Associate Professor Troy Gaston
Position
Associate Professor
Marine Science
School of Environmental and Life Sciences
College of Engineering, Science and Environment
Focus area
Environmental Science and Management
Contact Details
troy.gaston@newcastle.edu.au | |
Phone | (02) 4349 4569 |
Mobile | 0414251775 |
Fax | (02) 4348 4145 |
Office
Room | E1.39 |
---|---|
Building | Science Offices. |
Location | Ourimbah 10 Chittaway Road Ourimbah, NSW 2258 Australia |