ORCID Profile
0000-0002-2815-6395
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
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)
Environmental Science and Management | Atmospheric Sciences | Oceanography | Environmental Technologies | Geology Not Elsewhere Classified | Oceanography Not Elsewhere Classified | Atmospheric Dynamics | Biological Oceanography | Atmospheric Aerosols | Environmental Management And Rehabilitation | Cloud Physics | Inorganic Geochemistry Not Elsewhere Classified
ANZSRC Socio-Economic Objective (SEO)
Primary mining and extraction processes | Ecosystem Adaptation to Climate Change | Atmospheric Processes and Dynamics | Rehabilitation of degraded mining lands | Atmospheric Composition (incl. Greenhouse Gas Inventory) | "Stone, ceramics and clay materials" | Biological sciences | Earth sciences | Physical sciences |
Related Links
Publications
Trace metals and hydrocarbons in sediments from the Southampton water region, with particular reference to the influence of oil refinery effluent
Publisher: Elsevier BV
Date: 1985
Grain size normalization: A case for post extraction normalization and inclusion of selective extraction procedures
Publisher: Wiley
Date: 05-2011
Seasonal and diurnal cycles of dimethylsulfide, dimethylsulfoniopropionate and dimethylsulfoxide at one tree reef lagoon
Publisher: CSIRO Publishing
Date: 2006
DOI: 10.1071/EN06011
Abstract: Environmental Context. Coral reefs have now been highlighted as significant sources of dimethylsulfide and other organic sulfur compounds, which may be important for the formation of clouds over the ocean and climate regulation. However, no studies have reported the seasonal and diurnal cycles of these organic sulfur substances in reef waters. This study describes the cycling of dimethylsulfide and related organic substances at One Tree Reef, in the southern part of the Great Barrier Reef, as well as their production from staghorn coral in chamber experiments. The results suggest that coral reefs are significant sources of dimethylsulfide to reef waters and possibly the reef atmosphere, but the effect of this substance on the radiative climate over the Great Barrier Reef is unknown. Abstract. Seasonal and diurnal studies conducted at One Tree Reef lagoon in the Great Barrier Reef (GBR) highlight increased production of dissolved dimethylsulfide, atmospheric dimethylsulfide, dissolved and particulate dimethylsulfoniopropionate, and dimethylsulfoxide during the summer months, and when the lagoon is moated with inter-reefal water. This production is due to both the growth of phytoplankton populations within the lagoon, and benthic corals and algae in or on sediments and attached to solid substrates. The relative importance of these two processes was not determined in this study, although benthic production from corals was shown to be significant in chamber experiments. The diurnal cycles of the organic sulfur substances measured at One Tree Reef provide unequivocal evidence that coral reefs produce significant quantities of these organic sulfur substances during the day and suggest that coral reefs could be significant sources of atmospheric dimethylsulfide.
Low-iodine diet for producing iodine deficiency in rats
Publisher: CSIRO Publishing
Date: 1980
DOI: 10.1071/BI9800205
Abstract: A low-iodine diet has been prepared for rats, using locally available low-iodine ingredients. On analysis it has been shown to consistently contain 15-20 ng iodine/g. When fed to growing female rats, this diet produced severe iodine deficiency while not significantly affecting growth or reproduction. The deficiency was manifested by a fall in daily urinary iodine excretion (to less than 1 JIg/day) and a seven-fold increase in thyroid uptake (1311) observable within 3 months. Levels of plasma thyroxine (T 4) and thyroid stimulating hormone (TSH) continued to change for 4-5 months, T 4 falling from 69�9 to 7�5 nmol/l and TSH increasing seven-fold from a control value of 364 to 2406 ng/ml. Goitre was present in all iodine-deficient rats and iodine content in the thyroid was 10 % of the control value.
Quantification of dimethylsulfoniopropionate (DMSP) in Acropora spp. of reef-building coral using mass spectrometry with deuterated internal standard
Publisher: Springer Science and Business Media LLC
Date: 27-12-2016
DOI: 10.1007/S00216-016-0141-5
Abstract: Dimethylsulfoniopropionate (DMSP) in scleractinian coral is usually analysed indirectly as dimethylsulfide (DMS) using gas chromatography (GC) with a sulfur-specific detector. We developed a headspace GC method for mass spectral analysis of DMSP in branching coral where hexa-deuterated DMSP (d
The application of sediment capping agents on phosphorus speciation and mobility in a sub-tropical dunal lake
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/MF03181
Abstract: Experimental sediment cores from Lake Ainsworth, Australia, were exposed to an induced 46-day, anoxic/oxic cycle in the laboratory, mimicking the seasonal thermal stratification cycle commonly observed in the lake’s waters every summer. Under oxic conditions the supply of phosphorus (P) and iron (Fe) to the overlying water was slow, however, induced anoxia led to an enhanced release of P and Fe from the sediments to the water column. An inverse relationship between total P, Fe and redox potential suggests that Lake Ainsworth sediments are redox sensitive. Phosphorus speciation analysis of Lake Ainsworth sediments revealed the presence of a large pool of organic P, reactive Fe-bound P, and CaCO3-bound P, the latter fraction decreasing during anoxic conditions. Two sediment-capping agents, a lanthanum modified bentonite clay and Bauxsol (a waste product from the aluminium smelting industry) were assessed for their ability to reduce the levels of P released from Lake Ainsworth sediments during the 46-day, anoxic/oxic cycle. The bentonite clay was highly effective at reducing plant available P in anoxic/oxic conditions, but levels of dissolved Fe were enhanced with its use. Although the use of Bauxsol to remove plant available P is not recommended in anoxic waters, its use in suspension in oxic waters warrants further study.
Chemical and microbiological aspects of acoustically turbid sediments: Preliminary investigations
Publisher: Informa UK Limited
Date: 1986
Air blasting as the optimal approach for the extraction of antioxidants in coral tissue
Publisher: Elsevier BV
Date: 10-2013
Atmospheric dimethysulphide production from corals in the Great Barrier Reef and links to solar radiation, climate and coral bleaching
Publisher: Springer Science and Business Media LLC
Date: 04-03-2012
Sea spray aerosol in the Great Barrier Reef and the presence of non-volatile organics
Publisher: American Geophysical Union (AGU)
Date: 22-06-2016
DOI: 10.1002/2016JD024966
DMS and DMSP in mucus ropes, coral mucus, surface films and sediment pore waters from coral reefs in the Great Barrier Reef
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/MF04114
Abstract: Concentrations of dimethylsulphide (DMS) and its precursor compound dimethylsulphoniopropionate (DMSP), two sulphur compounds that are involved in the formation of clouds, were measured for mucus ropes, coral mucus, surface films and sediment pore waters collected from three coral reefs in the Great Barrier Reef, Australia. The concentrations of DMS (61–18 665 nm) and DMSP (1978–54 381 nm) measured in mucus rope s les are the highest yet reported in the marine environment. The values exceed concentrations of DMS and DMSP reported from highly productive polar waters and sea ice algal communities. Concentrations of DMSP in coral mucus ranged from 1226 to 25 443 nm, with mucus from Acropora formosa containing the highest levels of DMSP. Dimethylsulphide and DMSP in surface microlayer s les from three coral reefs were two to four times subsurface (0.5 m) concentrations. In coral-reef sediment pore waters, concentrations of DMS and DMSP were substantially higher than water-column concentrations, suggesting that coral sediments may be a significant source of these two compounds to reef waters. Overall, the results strongly suggest that coral reefs in the Great Barrier Reef are significant sources of these two sulphur substances.
Profiles of DMSP, algal pigments, nutrients and salinity in pack ice from eastern Antarctica
Publisher: Elsevier BV
Date: 08-2000
Phosphate removal from aqueous solutions using neutralised bauxite refinery residues (BauxsolTM)
Publisher: CSIRO Publishing
Date: 2006
DOI: 10.1071/EN05038
Abstract: Environmental Context.Eutrophication of freshwater and marine ecosystems is a global problem, which is frequently linked to high phosphorus concentrations. The present study investigated the use of Bauxsol™, a modified bauxite refinery residue, to remove dissolved phosphate from water, and has shown that it can be used as a cost-effective adsorbent for treating phosphate-contaminated waters. The results provide water and environmental managers with a new technique for decreasing the phosphate loads in water and wastewater. Environmental benefits include improved water quality, minimisation of excessive plant growth, including potentially toxic blue green algae, and the utilisation of an industrial residue for environmental remediation. Abstract.Phosphate (PO43–) removal by Bauxsol™, a neutralised bauxite refinery residue, was investigated as a function of time, pH, ionic strength, adsorbent dosage, competing ions, and initial phosphate concentration. The results of adsorption and desorption studies indicate that adsorption of PO43– by Bauxsol™ is based on a ligand-exchange mechanism, although the low reversibility pH-independent desorption observed in acid-treated Bauxsol™ indicates a dominance of chemisorption. It was shown that PO43– adsorption onto both Bauxsol™ and acid-treated Bauxsol™ followed a Langmuir isotherm model, with adsorption capacities of 0.21 and 0.48 mmol g−1 at pH 9.0 and 5.2 respectively. Adsorption of PO43– by Bauxsol™ increased with decreasing pH, with maximum adsorption efficiencies obtained at pH 5.2 ± 0.1 (the lowest pH investigated), higher Bauxsol™ to initial phosphate concentration ratios, and increased time. Studies of the effects of competing ions on the adsorption of PO43– by Bauxsol™ indicated that adsorption decreased in the presence of HCO3− ions, whereas SO42–and Cl− ions had little effect, and Ca2+ and Mg2+ ions increased adsorption. These findings suggest that Bauxsol™ could be used as an efficient low-cost adsorbent for treating phosphate-contaminated waters.
Coral Reef Emissions of Atmospheric Dimethylsulfide and the Influence on Marine Aerosols in the Southern Great Barrier Reef, Australia
Publisher: American Geophysical Union (AGU)
Date: 06-04-2020
DOI: 10.1029/2019JD031837
Effect of terrestrial and marine humics on copper spéciation in an estuary in the great barrier reef lagoon
Publisher: CSIRO Publishing
Date: 1988
DOI: 10.1071/MF9880019
Abstract: Studies carried out over several years on a tropical estuary, the Ross River Estuary, have shown that copper speciation is influenced by both terrestrial and marine humic substances. While terrestrial humic substances are mobilized by high freshwater runoff in the monsoonal season, Trichodesmium blooms mobilize high concentrations of marine humics to the inshore zone and increase labile forms of copper. The marine humics are more soluble than the terrestrial humics and persist in coastal waters of the Great Barrier Reef lagoon for many months prior to the wet season.
Influence of Trichodesmium blooms on cadmium and iron speciation in Great Barrier Reef lagoon waters
Publisher: Elsevier BV
Date: 09-1986
DMS flux over the Antarctic sea ice zone
Publisher: Elsevier BV
Date: 04-2012
A global database of sea surface dimethylsulfide (DMS) measurements and a procedure to predict sea surface DMS as a function of latitude, longitude, and month
Publisher: American Geophysical Union (AGU)
Date: 06-1999
DOI: 10.1029/1999GB900004
Factors affecting the cycling of dimethylsulfide and dimethylsulfoniopropionate in coral reef waters of the great barrier reef
Publisher: CSIRO Publishing
Date: 2007
DOI: 10.1071/EN06065
Abstract: Environmental context. Levels of atmospheric dimethylsulfide (DMS) and its oxidation products are reputed to affect the microphysics of clouds and the amount of incoming solar radiation to the ocean. Studies of DMS and its precursor compound dimethylsulfoniopropionate (DMSP) at two inshore fringing coral reefs in the Great Barrier Reef highlight pronounced seasonal, diurnal and tidal variation of these compounds, with dissolved DMS and DMSP significantly correlated with sea surface temperatures (SSTs) up to 30°C. During a coral bleaching episode at one of the reef sites, dissolved DMS concentrations decreased when SSTs exceeded 30°C, a result replicated in chamber experiments with staghorn coral. The results raise interesting questions on the role of these organosulfur substances in corals and whether DMS emissions from coral reefs could have an effect on regional climate in the Great Barrier Reef. Abstract. A study of dissolved dimethylsulfide (DMSw), dissolved and particulate dimethylsulfoniopropionate (DMSPd, DMSPp), and atmospheric dimethylsulfide (DMSa) was carried out at two inshore fringing coral reefs (Orpheus Island and Magnetic Island) in the Great Barrier Reef (GBR) to investigate the variation of these organosulfur substances with season, sea surface temperature, tides, and time of day. Highest concentrations of these organosulfur substances occurred in the summer months at both reefs, with lowest concentrations occurring during winter, suggesting a biological source of these compounds from the reef flats. At the Orpheus Island reef, where more measurements were made, DMSw and DMSPd were significantly correlated with tidal height during the flooding tide over the reef (r = 0.37, P 0.05 r = 0.58, P 0.01 respectively), and elevated DMSw and DMSa concentrations generally occurred in the daylight hours, possibly reflecting photosynthetic production of DMSw from the reef flats. Chamber experiments with the staghorn coral Acropora formosa confirmed that corals produce DMSw in the day. DMSw (r = 0.43, P 0.001) and DMSPd (r = 0.59, P 0.001) were significantly positively correlated with sea surface temperatures (SST) at the Orpheus Island reef. During severe coral bleaching at the eutrophic Magnetic Island reef in the summer, DMSw concentrations decreased at SSTs greater than 30°C, suggesting that reef production of DMSw decreases during elevated SSTs. This was later confirmed in chamber experiments with Acropora formosa, which showed that when this coral was exposed to temperatures at its bleaching threshold (31°C), decreased production of DMSw occurred. These results suggest that DMS and DMSP in coral zooxanthellae may be functioning as antioxidants, but further experiments are needed to substantiate this.
Influence of different water masses and biological activity on dimethylsulphide and dimethylsulphoniopropionate in the subantarctic zone of the Southern Ocean during ACE 1
Publisher: American Geophysical Union (AGU)
Date: 07-1998
DOI: 10.1029/98JD01200
Trace metals as tracers of dredging activity in cleveland bay—field and laboratory studies
Publisher: CSIRO Publishing
Date: 1994
DOI: 10.1071/MF9941237
Abstract: This study has investigated in detail trace metal concentrations in Cleveland Bay in the central Great Barrier Reef and assessed the significant carrier phases of several metals during a simulated disturbance of sediments designed to investigate the effects of dredging. Organic, iron oxide and carbonate phases were shown to be important carrier phases for several trace metals. The application of an acid-leach technique to monitor labile or pollutant concentrations of copper, zinc, lead and nickel in sediments collected from coral reefs s led before and after two dredging events in 1991 yielded useful information on the fate of dredged sediment. Trace metal contamination close inshore was attributed to port activities, sewage discharge and urbanization.
Marine biology: Coral animals combat stress with sulphur
Publisher: Springer Science and Business Media LLC
Date: 10-2013
DOI: 10.1038/NATURE12698
Surface flux and vertical profile of dimethyl sulfide in acid sulfate soils at Cudgen Lake, northern New South Wales, Australia
Publisher: Elsevier BV
Date: 08-2019
DOI: 10.1016/J.CHEMOSPHERE.2019.04.129
Abstract: A dimethyl sulfide (DMS) vertical concentration profile and DMS surface emission flux were quantified in undisturbed acid sulfate soils (ASS) at Cudgen Lake on the north coast of New South Wales, Australia. A deuterated internal standard was used to account for soil adsorption characteristics. The DMS vertical concentration profile increased exponentially from 0.6 m depth to the surface layer. This profile reflected the adsorption properties of the ASS horizons present and the experimentally determined octanol/water partition coefficient for DMS of 1.36, suggesting that DMS would be mobilised in the soil water medium for upward translocation in time due to surface evaporation. The organic material in the oxidised ASS crustal layer had a chemically strong adsorption affinity for DMS, which appeared to restrain its emission from surface soil particles to the atmosphere. The seasonally averaged DMS surface flux estimate from the Cudgen Lake ASS was 9 ng S m
Coral reef origins of atmospheric dimethylsulfide at Heron Island, southern Great Barrier Reef, Australia
Publisher: Copernicus GmbH
Date: 17-01-2017
Abstract: Abstract. Atmospheric dimethylsulfide (DMSa), continually derived from the world's oceans, is a feed gas for the tropospheric production of new sulfate particles, leading to cloud condensation nuclei that influence the formation and properties of marine clouds and ultimately the Earth's radiation budget. Previous studies on the Great Barrier Reef (GBR), Australia, have indicated coral reefs are significant sessile sources of DMSa capable of enhancing the tropospheric DMSa burden mainly derived from phytoplankton in the surface ocean however, specific environmental evidence of coral reef DMS emissions and their characteristics is lacking. By using on-site automated continuous analysis of DMSa and meteorological parameters at Heron Island in the southern GBR, we show that the coral reef was the source of occasional spikes of DMSa identified above the oceanic DMSa background signal. In most instances, these DMSa spikes were detected at low tide under low wind speeds, indicating they originated from the lagoonal platform reef surrounding the island, although evidence of longer-range transport of DMSa from a 70 km stretch of coral reefs in the southern GBR was also observed. The most intense DMSa spike occurred in the winter dry season at low tide when convective precipitation fell onto the aerially exposed platform reef. This co-occurrence of events appeared to biologically shock the coral resulting in a seasonally aberrant extreme DMSa spike concentration of 45.9 nmol m−3 (1122 ppt). Seasonal DMS emission fluxes for the 2012 wet season and 2013 dry season c aigns at Heron Island were 5.0 and 1.4 µmol m−2 day−1, respectively, of which the coral reef was estimated to contribute 4 % during the wet season and 14 % during the dry season to the dominant oceanic flux.
The relative abundance of dimethylsulfoniopropionate (DMSP) among other zwitterions in branching coral at Heron Island, southern Great Barrier Reef
Publisher: Springer Science and Business Media LLC
Date: 20-05-2017
DOI: 10.1007/S00216-017-0385-8
Abstract: Dimethylsulfoniopropionate (DMSP) and eleven other target zwitterions were quantified in the branch tips of six Acropora species and Stylophora pistillata hard coral growing on the reef flat surrounding Heron Island in the southern Great Barrier Reef (GBR), Australia. Hydrophilic interaction liquid chromatography mass spectrometry (HILIC-MS) was used for s le analysis with isotope dilution MS applied to quantify DMSP. The concentration of DMSP was ten times greater in A. aspera than A. valida, with this difference being maintained throughout the spring, summer and winter seasons. In contrast, glycine betaine was present in significantly higher concentrations in these species during the summer than the winter. Exposure of branch tips of A. aspera to air and hypo-saline seawater for up to 1 h did not alter the concentrations of DMSP present in the coral when compared with control s les. DMSP was the most abundant target zwitterion in the six Acropora species examined, ranging from 44-78% of all target zwitterions in A. millepora and A. aspera, respectively. In contrast, DMSP only accounted for 7% in S. pistillata, with glycine betaine and stachydrine collectively accounting for 88% of all target zwitterions in this species. The abundance of DMSP in the six Acropora species examined points to Acropora coral being an important source for the biogeochemical cycling of sulfur throughout the GBR, since this reef-building branching coral dominates the coral cover of the GBR. Graphical Abstract HILIC-MS extracted ion chromatogram showing zwitterionic metabolites from the branching coral Acropora isopora.
An interlaboratory comparison for the quantification of aqueous dimethylsulfide
Publisher: Wiley
Date: 11-2014
High zinc exposure leads to reduced dimethylsulfoniopropionate (DMSP) levels in both the host and endosymbionts of the reef-building coral Acropora aspera
Publisher: Elsevier BV
Date: 2018
DOI: 10.1016/J.MARPOLBUL.2017.10.070
Abstract: Dimethylsulfoniopropionate (DMSP) is a biogenic compound that could be involved in metal detoxification in both the host and endosymbionts of symbiotic corals. Acropora aspera, a common reef-building coral of the Great Barrier Reef, was exposed to zinc doses from 10 to 1000μg/L over 96h, with zinc being a low-toxic trace metal commonly used in the shipping industry. Over time, significantly lower DMSP concentrations relative to the control were found in both the host and symbionts in the highest zinc treatment where zinc uptake by both partners of the symbiosis was the highest. This clearly indicates that DMSP was consumed or stopped being produced under high and extended zinc exposure. This drop in DMSP was first observed in the host tissue, suggesting that the coral host was the first to respond to metal contamination. Such decrease in DMSP concentrations could influence the long-term health of corals under zinc exposure.
ENCORE: The effect of nutrient enrichment on coral reefs. Synthesis of results and conclusions
Publisher: Elsevier BV
Date: 02-2001
DOI: 10.1016/S0025-326X(00)00181-8
Abstract: Coral reef degradation resulting from nutrient enrichment of coastal waters is of increasing global concern. Although effects of nutrients on coral reef organisms have been demonstrated in the laboratory, there is little direct evidence of nutrient effects on coral reef biota in situ. The ENCORE experiment investigated responses of coral reef organisms and processes to controlled additions of dissolved inorganic nitrogen (N) and/or phosphorus (P) on an offshore reef (One Tree Island) at the southern end of the Great Barrier Reef, Australia. A multi-disciplinary team assessed a variety of factors focusing on nutrient dynamics and biotic responses. A controlled and replicated experiment was conducted over two years using twelve small patch reefs ponded at low tide by a coral rim. Treatments included three control reefs (no nutrient addition) and three + N reefs (NH4Cl added), three + P reefs (KH2PO4 added), and three + N + P reefs. Nutrients were added as pulses at each low tide (ca twice per day) by remotely operated units. There were two phases of nutrient additions. During the initial, low-loading phase of the experiment nutrient pulses (mean dose = 11.5 microM NH4+ 2.3 microM PO4(-3)) rapidly declined, reaching near-background levels (mean = 0.9 microM NH4+ 0.5 microM PO4(-3)) within 2-3 h. A variety of biotic processes, assessed over a year during this initial nutrient loading phase, were not significantly affected, with the exception of coral reproduction, which was affected in all nutrient treatments. In Acropora longicyathus and A. aspera, fewer successfully developed embryos were formed, and in A. longicyathus fertilization rates and lipid levels decreased. In the second, high-loading, phase of ENCORE an increased nutrient dosage (mean dose = 36.2 microM NH4+ 5.1 microM PO4(-3)) declining to means of 11.3 microM NH4+ and 2.4 microM PO4(-3) at the end of low tide) was used for a further year, and a variety of significant biotic responses occurred. Encrusting algae incorporated virtually none of the added nutrients. Organisms containing endosymbiotic zooxanthellae (corals and giant clams) assimilated dissolved nutrients rapidly and were responsive to added nutrients. Coral mortality, not detected during the initial low-loading phase, became evident with increased nutrient dosage, particularly in Pocillopora damicornis. Nitrogen additions stunted coral growth, and phosphorus additions had a variable effect. Coral calcification rate and linear extension increased in the presence of added phosphorus but skeletal density was reduced, making corals more susceptible to breakage. Settlement of all coral larvae was reduced in nitrogen treatments, yet settlement of larvae from brooded species was enhanced in phosphorus treatments. Recruitment of stomatopods, benthic crustaceans living in coral rubble, was reduced in nitrogen and nitrogen plus phosphorus treatments. Grazing rates and reproductive effort of various fish species were not affected by the nutrient treatments. Microbial nitrogen transformations in sediments were responsive to nutrient loading with nitrogen fixation significantly increased in phosphorus treatments and denitrification increased in all treatments to which nitrogen had been added. Rates of bioerosion and grazing showed no significant effects of added nutrients. ENCORE has shown that reef organisms and processes investigated in situ were impacted by elevated nutrients. Impacts were dependent on dose level, whether nitrogen and/or phosphorus were elevated and were often species-specific. The impacts were generally sub-lethal and subtle and the treated reefs at the end of the experiment were visually similar to control reefs. Rapid nutrient uptake indicates that nutrient concentrations alone are not adequate to assess nutrient condition of reefs. Sensitive and quantifiable biological indicators need to be developed for coral reef ecosystems. The potential bioindicators identified in ENCORE should be tested in future research on coral reef/nutrient interactions. Synergistic and cumulative effects of elevated nutrients and other environmental parameters, comparative studies of intact vs. disturbed reefs, offshore vs. inshore reefs, or the ability of a nutrient-stressed reef to respond to natural disturbances require elucidation. An expanded understanding of coral reef responses to anthropogenic impacts is necessary, particularly regarding the subtle, sub-lethal effects detected in the ENCORE studies.
The Flux and Emission of Dimethylsulfide From the Great Barrier Reef Region and Potential Influence on the Climate of NE Australia
Publisher: American Geophysical Union (AGU)
Date: 21-12-2018
DOI: 10.1029/2018JD029210
The SOLAS air–sea gas exchange experiment (SAGE) 2004
Publisher: Elsevier BV
Date: 03-2011
Carbon capture and the aluminium industry: Preliminary studies
Publisher: CSIRO Publishing
Date: 2006
DOI: 10.1071/EN06018
Abstract: Environmental Context. Carbon dioxide concentrations in the atmosphere are rising every year by 1.5–3.0 ppm and there is now a general acceptance that increased efforts must be made to reduce industrial sources of this greenhouse gas. Carbonation of red mud wastes produced by aluminium refineries has been carried out to study the capacity of these wastes to capture carbon dioxide. Removal is very rapid, with the added carbon dioxide recorded as a large increase in bicarbonate alkalinity. Although these results can only be considered preliminary, the experiments indicate that these wastes can potentially remove up to 15 million tonnes of carbon dioxide produced in Australia per annum. Furthermore, the carbonated waste can be used in other industrial processes to add further value to these waste materials. Abstract. Carbonation of raw red mud produced by aluminium refineries and a chemically and physically neutralized red mud (Bauxsol™) has been carried out to study the capacity of these wastes to capture carbon dioxide. After only 5 min of carbonation of raw red mud, total alkalinity dropped 85%. Hydroxide alkalinity was almost totally consumed, carbonate alkalinity dropped by 88%, and bicarbonate alkalinity increased to 728 mg L–1. After 24 min carbonation, the bicarbonate alkalinity reached its maximum value of 2377 mg L–1, and hydroxide and carbonate alkalinity were virtually absent. After 30 and 60 min carbonation, bicarbonate alkalinity started to decrease slightly as the pH of the slurry increased. After 5 min carbonation of Bauxsol™, total and bicarbonate alkalinity dropped 89% and 9%, respectively. After 20 min carbonation, bicarbonate alkalinity dropped another 11%, but after 30 min carbonation bicarbonate alkalinity increased 26% to levels found in the original Bauxsol material, and pH was stable. Based on these experiments, a calculation of the amount of carbon dioxide that could be removed annually at aluminium refineries in Australia is potentially 15 million tonnes, and suggests that further studies are necessary to maximize this carbon removal process. Furthermore, carbonation produces a product, which can potentially be used in other industrial and agricultural activities to remove toxic metals and nutrients.
The seasonal variation of dissolved nutrients, chlorophyll a and suspended sediments at Nelly Bay, Magnetic Island
Publisher: Elsevier BV
Date: 06-2003
The influence of coral reefs on atmospheric dimethylsulphide over the Great Barrier Reef, Coral Sea, Gulf of Papua and Solomon and Bismarck Seas
Publisher: CSIRO Publishing
Date: 2005
DOI: 10.1071/MF04097
Abstract: Marked regional differences in dissolved dimethylsulphide (DMS), atmospheric DMS and DMS flux were recorded during July 1997 through the northern Great Barrier Reef, Coral Sea, Gulf of Papua, Solomon and Bismarck Seas. Highest concentrations of dissolved DMS occurred in the Coral Sea, Gulf of Papua and Bismarck Sea, with lower concentrations in the Great Barrier Reef and Solomon Sea. Elevated levels of atmospheric DMS often occurred in south-easterly to southerly trade winds s led in the region 18°32′–8°12′S to 145°–151°E, where the highest biomass of coral reefs occurred. Atmospheric DMS often increased in the day after low tides and was positively correlated with tidal height in the northern Great Barrier Reef (r = 0.91, P 0.05). For tides less than 1.6 m, atmospheric DMS increased on the rising tide for the northern GBR and NW Coral Sea (r = 0.66 P 0.05) and for the whole voyage (r = 0.25 P 0.05). As coral reefs have been identified as significant sources of DMS, it is suggested that the daytime increase in atmospheric DMS over much of the study area was mainly a result of high winds and extremely low tides in July, which exposed the reefs during the day.
Effects of carp, gambusia, and Australian bass on water quality in a subtropical freshwater reservoir
Publisher: Informa UK Limited
Date: 09-2012
Spatial distribution of dimethylsulfide and diniethylsulfoniopropionate in the Australasian sector of the Southern Ocean
Publisher: American Geophysical Union (AGU)
Date: 07-1998
DOI: 10.1029/97JD03453
The validation and measurement uncertainty of an automated gas chromatograph for marine studies of atmospheric dimethylsulfide
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5AY00269A
Abstract: An automated gas chromatograph has been developed and field evaluated for continuous analysis of atmospheric dimethylsulfide. The validation and measurement uncertainty of the analytical system is described.
Dimethylsulphoxide (DMSO) in biological samples: A comparison of the TiCl3 and NaBH4 reduction methods using headspace analysis
Publisher: Elsevier BV
Date: 08-2014
Dimethylsulphide and dimethylsulphoniopropionate in the South-West Indian Ocean sector of East Antarctica from 30° to 80°E during BROKE-West
Publisher: Elsevier BV
Date: 05-2010
Dimethylated sulfur compounds in coral-reef ecosystems
Publisher: CSIRO Publishing
Date: 2016
DOI: 10.1071/EN14258
Abstract: Environmental contextDimethylated sulfur compounds can exert multiple biological and environmental effects including climate regulation. Climate change and other anthropogenic factors are predicted to affect coral-reef ecosystems where these sulfur compounds are particularly abundant. We review the processes that regulate the production of dimethylated sulfur compounds in coral reefs and the potential consequences of environmental changes on their biogenic cycle in such fragile ecosystems under future climate change scenarios. AbstractDimethylsulfoniopropionate (DMSP) and its main breakdown products dimethylsulfide (DMS) and dimethylsulfoxide (DMSO) are biogenic species in the marine environment. In coral reefs, these dimethylated sulfur compounds (DSCs) have been reported at greater concentrations than in other marine ecosystems, which is most likely attributable to the extraordinary large bio ersity of coral reef communities (e.g. corals, macroalgae, coralline algae, invertebrates) and to the unique ability of zooxanthellate corals to synthesise DMSP from both the animal host and algal symbionts. Besides the various biological functions that have been attributed to DSCs, including thermoregulation, osmoregulation, chemoattraction and antioxidant response, DMS is suspected to take part in a climate feedback loop that could help counteract global warming. Nowadays, anthropogenic effects such as pollution, overfishing, increased sedimentation and global climate change are imminently threatening the health of coral reef communities around the world, with possible consequences on the natural cycle of DSCs within these ecosystems. This review provides insight into the biogeochemistry of DSCs in coral reefs and discusses the implications of projected changes in DSC production in these increasingly stressed ecosystems under future climate change scenarios. It shows that DSC dynamics will incontestably be affected in the near future, with possible feedback consequences on local climate.
Effects of fish and macrophytes on phytoplankton and zooplankton community structure in a subtropical freshwater reservoir
Publisher: Elsevier BV
Date: 2017
Rapid DMSP production by an Antarctic phytoplankton community exposed to Natural surface irradiances in late spring
Publisher: Inter-Research Science Center
Date: 16-12-2013
DOI: 10.3354/AME01670
Comparative response of DMS and DMSP concentrations in Symbiodinium clades C1 and D1 under thermal stress
Publisher: Elsevier BV
Date: 10-2014
Zinc in fish, crabs, oysters, and mangrove flora and fauna from Cleveland Bay
Publisher: Elsevier BV
Date: 2000
Effects of environmental factors on dimethylated sulfur compounds and their potential role in the antioxidant system of the coral holobiont
Publisher: Wiley
Date: 07-04-2014
Dimethylsulphide production in the Southern Ocean using a nitrogen-based flow network model and field measurements from ACE-1
Publisher: Informa UK Limited
Date: 06-2005
DMSP in corals and benthic algae from the Great Barrier Reef
Publisher: Elsevier BV
Date: 10-2002
Regional and seasonal variations of trace metals in tropical phaeophyceae from North Queensland
Publisher: Elsevier BV
Date: 07-1982
Dimethylsulphide and dimethylsulphoniopropionate in Antarctic sea ice and their release during sea ice melting
Publisher: Elsevier BV
Date: 02-2006
Correlations between the satellite-derived seasonal cycles of phytoplankton biomass and aerosol optical depth in the Southern Ocean: Evidence for the influence of sea ice
Publisher: American Geophysical Union (AGU)
Date: 12-2005
DOI: 10.1029/2005GB002546
Dimethyl sulfide in the Southern Ocean: Seasonality and flux
Publisher: American Geophysical Union (AGU)
Date: 08-2000
DOI: 10.1029/2000JD900176
Coral reef aerosol emissions in response to irradiance stress in the Great Barrier Reef, Australia
Publisher: Springer Science and Business Media LLC
Date: 03-02-2018
Dimethylsulphoniopropionate (DMSP) as an indicator of bleaching tolerance in scleractinian corals
Publisher: MDPI AG
Date: 23-06-2015
DOI: 10.3390/JMSE3020444
Production of Severe Iodine Deficiency in Sheep Using a Prepared Low-Iodine Diet
Publisher: CSIRO Publishing
Date: 1980
DOI: 10.1071/BI9800053
Abstract: Extensive tests on dietary materials suitable for ingestion by sheep have led to the preparation of an appropriate diet which, when fed to the sheep, caused severe iodine deficiency. The deficiency was manifested by daily urinary excretion values which fell to levels of less than 20 pg iodine and by thyroxine (T4) and triiodothyronine (T3) concentrations in blood plasma which were reduced from more than 90 and 1�80 nmol/l to the low levels of less than 2�58 and 0�31 nmol/l respectively. The values were attained 5 months after feeding the low-iodine diet. Goitre was present in most of the animals and the reductions in T4 and T3 values were accompanied by increased concentrations of plasma thyroid stimulating hormone (TSH) from less than 8�6 to more than 68 ng/ml. S les of wool removed from selected areas of the sheep showed that the iodine-deficient diet also caused a reduction in the growth of wool.
The distribution of organic material and trace metals in sediments from the River Liffey Estuary, Dublin
Publisher: Elsevier BV
Date: 1979
Temperature Dependence of Carbon Disulphide Emissions from Rubber
Publisher: Springer Science and Business Media LLC
Date: 05-09-2016
Investigations of the speciation of phosphorus in coastal and estuarine waters of the great barrier reef, using iron strips and colorimetry
Publisher: CSIRO Publishing
Date: 1997
DOI: 10.1071/MF96029
Abstract: A new method of determining phosphorus in sea water, using iron-impregnated strips of filter paper, was investigated and compared with standard colorimetric methods of phosphorus analysis. Laboratory experiments were undertaken to determine the number of iron strips required to extract phosphorus from sea water, the length of time a strip needed to adsorb all P from solution, the reproducibility of the method, and whether the strips could measure P adsorbed to different particles. Field studies were carried out with iron strips in Cleveland Bay and the Herbert estuary, and comparisons were made with concentrations of dissolved, particulate and organic phosphorus determined by standard techniques. The iron-strip method was shown to work well under laboratory conditions, but the field studies showed varying results for the different environments tested. Generally, most of the dissolved inorganic phosphorus present in sea water was taken up by the strips. The iron strips also took up a proportion of other phosphorus fractions in sea water, but the nature of this uptake appears to vary with environmental conditions.
Preliminary carbon sequestration modelling for the Australian macadamia industry
Publisher: Springer Science and Business Media LLC
Date: 15-12-2013
Elemental speciation and distribution in sediments of a eutrophied subtropical freshwater reservoir using postextraction normalisation
Publisher: Springer Science and Business Media LLC
Date: 28-06-2012
The effect of coral bleaching on the cellular concentration of dimethylsulphoniopropionate in reef corals
Publisher: Elsevier BV
Date: 11-2014
Dimethyl sulfide and other biogenic volatile organic compound emissions from branching coral and reef seawater: potential sources of secondary aerosol over the Great Barrier Reef
Publisher: Springer Science and Business Media LLC
Date: 22-01-2016
Varying Biological Activity and Wind Stress Affect the DMS Response during the SAGE Iron Enrichment Experiment
Publisher: MDPI AG
Date: 09-04-2020
DOI: 10.3390/JMSE8040268
Abstract: Surface dissolved dimethylsulfide (DMS) and depth-integrated dimethylsulfoniopropionate (DMSP) measurements were made from March to April 2004 during the SOLAS Air–Sea Gas Exchange Experiment (SAGE), a multiple iron enrichment experiment in subantarctic waters SE of New Zealand. During the first two iron enrichments, chl a and DMS production were constrained, but during the third enrichment, large pulses of DMS occurred in the fertilised IN patch, compared with the unfertilised OUT patch. During the third and fourth iron infusions, total chl a concentrations doubled from 0.52 to 1.02 µg/L. Hapto8s and prasinophytes accounted for 50%, and 20%, respectively, of total chl a. The large pulses of DMS during the third iron enrichment occurred during high dissolved DMSP concentrations and wind strength changes in dinoflagellate, haptophyte, and cyanobacteria biomass and increased microzooplankton grazing that exerted a top down control on phytoplankton production. A further fourth iron enrichment did cause surface waters to increase in DMS, but the effect was not as great as that recorded in the third enrichment. Differences in the biological response between SAGE and several other iron enrichment experiments were concluded to reflect microzooplankton grazing activities and the microbial loop dominance, resulting from mixing of the MLD during storm activity and high winds during iron enrichment.
Molybdenum in a nearshore and estuarine environment, North Wales
Publisher: Elsevier BV
Date: 04-1974
Related Organisations
Related Funding Activities
ARC Discovery
Start Date: 2015
End Date: 2017
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP150101649
Start Date: 05-2015
End Date: 12-2017
Amount: $263,500.00
Funder: Australian Research Council
View Funded ActivitySpecial Research Initiatives - Grant ID: SR0354683
Start Date: 12-2003
End Date: 12-2004
Amount: $10,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0212037
Start Date: 2002
End Date: 06-2005
Amount: $225,000.00
Funder: Australian Research Council
View Funded Activity