A5039243516- Marine Bivalve and Aquaculture Studies
- Marine and fisheries research
- Aquaculture Nutrition and Growth
- Marine animal studies overview
- Ocean Acidification Effects and Responses
- Isotope Analysis in Ecology
- Marine and coastal ecosystems
- Ichthyology and Marine Biology
- Cephalopods and Marine Biology
- Reproductive biology and impacts on aquatic species
- Physiological and biochemical adaptations
- Marine Biology and Ecology Research
- Marine and coastal plant biology
- Fish Ecology and Management Studies
- Fatty Acid Research and Health
- Meat and Animal Product Quality
- Coral and Marine Ecosystems Studies
- Polar Research and Ecology
- Arctic and Antarctic ice dynamics
- Microbial Community Ecology and Physiology
- Mercury impact and mitigation studies
- Fish Biology and Ecology Studies
- Environmental Toxicology and Ecotoxicology
- Microplastics and Plastic Pollution
- Analytical Chemistry and Chromatography
CSIRO Oceans and Atmosphere
1997-2025
University of Tasmania
2016-2025
Australian Antarctic Division
2023-2024
Commonwealth Scientific and Industrial Research Organisation
1996-2024
Department of Climate Change, Energy, the Environment and Water
2023
Antarctic Climate and Ecosystems Cooperative Research Centre
1993-2020
Australian Institute of Marine Science
2016
Centre National de la Recherche Scientifique
1998-1999
Laboratoire d’Océanographie de Villefranche
1998-1999
Sea ice is a key habitat in the high latitude Southern Ocean and predicted to change its extent, thickness duration coming decades. The sea-ice cover instrumental mediating ocean–atmosphere exchanges provides an important substrate for organisms from microbes algae predators. Antarctic krill, Euphausia superba, reliant on sea during phases of life cycle, particularly larval stages, food refuge their predators, while other small grazers, including copepods amphipods, either live brine channel...
We developed new perspectives to identify important questions and propose approaches for future research on marine food web lipids. They were related (i) structure function of lipids, (ii) lipid changes during critical life phases, (iii) trophic marker (iv) potential impact climate change. The first addresses the role lipids in membranes, storage buoyancy with following key question: How are properties membranes deposits affected by various types lipids? second deals importance reproduction,...
Antarctic krill embryos and larvae were experimentally exposed to 380 (control), 1000 2000 µatm p CO 2 in order assess the possible impact of ocean acidification on early development krill. No significant effects detected embryonic or larval behaviour at ; however, was disrupted before gastrulation 90 per cent embryos, no hatched successfully. Our model projections demonstrated that Southern Ocean sea water could rise up 1400 krill's depth range under IPCC IS92a scenario by year 2100...
Stenothermal polar benthic marine invertebrates are highly sensitive to environmental perturbations but little is known about potential synergistic effects of concurrent ocean warming and acidification on development their embryos larvae. We examined the these stressors calcifying larval stage in Antarctic sea urchin Sterechinus neumayeri reared present future (2100+) conditions from fertilization. Embryos were 2 temperature (ambient: -1.0 °C, + °C : 1.0 °C) 3 pH 8.0, -0.2-0.4 units:...
Parental effects passed from adults to their offspring have been identified as a source of rapid acclimation that may allow marine populations persist our surface oceans continue decrease in pH. Little is known, however, whether parental are beneficial for the presence multiple stressors. We exposed oyster Saccostrea glomerata elevated CO 2 and examined impacts (control = 392; 856 µatm) combined with temperature 24; 28°C), reduced salinity 35; 25) food concentration full; half diet) on...
Abstract Increased plant biomass is observed in terrestrial systems due to rising levels of atmospheric CO 2 , but responses marine macroalgae enrichment are unclear. The 200% increase by 2100 predicted enhance the productivity fleshy that acquire inorganic carbon solely as (non‐carbon dioxide‐concentrating mechanism [CCM] species—i.e., species without a mechanism), whereas those additionally uptake bicarbonate (CCM species) respond neutrally or positively depending on their affinity for...
Development in foraging behaviour and dietary intake of many vertebrates are age-structured. Differences feeding ecology may correlate with ontogenetic shifts dispersal patterns, therefore affect habitat resource utilization. Such life-history traits have important implications interpreting tropho-dynamic linkages. Stable isotope ratios the whiskers sub-yearling southern elephant seals (Mirounga leonina; n = 12) were used, conjunction satellite telemetry environmental data, to examine their...
Marine heatwaves are extreme events that can have profound and lasting impacts on marine species. Field observations shown seaweeds to be highly susceptible heatwaves, but the physiological drivers of this susceptibility poorly understood. Furthermore, effects in conjunction with ocean warming acidification yet investigated. To address knowledge gap, we conducted a laboratory culture experiment which tested growth responses Phyllospora comosa juveniles from southern extent its range...
Fecundity of orange roughy in 1987–1989 adjusted for standard length (S.L.) varied significantly between New South Wales (42 787 eggs female −1 ) Australia (35 339 and east Tasmania (31 085 ). Only 10‐17% the variability fecundity eastern was explained by s.l . any year from 1987–1992. However, liver condition age fish, combination with ., 27% variation fecundity. declined fish over 60 years old. It also correlated lipid levels ovary, particular, triacylglycerol as a proportion total...
Abstract Background Measuring coastal-pelagic prey fields at scales relevant to the movements of marine predators is challenging due dynamic and ephemeral nature these environments. Whale sharks ( Rhincodon typus ) are thought aggregate in nearshore tropical waters seasonally enhanced foraging opportunities. This implies that three-dimensional animals may be associated with bio-physical properties enhance availability. To date, few studies have tested this hypothesis. Methods Here, we...
Microbial consortia in the sediments from a permanent wetland near Albury-Wodonga north-eastern Victoria, Australia (Ryans 1 Billabong), and an ephemeral Shepparton central Victoria (Raftery's Swamp) were quantified by analyses of phospholipid fatty acid (PLFA), polar lipid ether (PLEL), sterol alcohol profiles. Prokaryotic organisms dominated benthic assemblages both wetlands. Total prokaryotic abundance (i.e. eubacteria plus archaea) was estimated to be (7-17) × 109 cells g-1 sediment (dry...
In recent years, there have been increasing reports of ingestion marine plastic debris in seabirds. Our aim was to assess the frequency and effects ingested pre-fledging Short-tailed Shearwaters (Puffinus tenuirostris) Tasmania. We conducted necropsies 171 Shearwater chicks, confiscated after illegal poaching, determine presence proventriculus ventriculus. also examined whether a correlation between body condition (based on mass fat-scores) quantity (by count weight). recorded 1032...
Understanding the foraging preference of cetaceans is crucial for assessing their role as apex predators and indicators marine ecosystem health. Using stable isotope analysis, we investigated trophic niche differentiation plasticity in 141 long-finned pilot whales ( Globicephala melas edwardii ) that stranded along Tasmanian coast at three locations (Marion Bay, King Island, Maria Island). Stranding location accounted most variability skin isotopic values δ 13 C: - 17.9 ± 0.2 ‰ to –16.9 ‰,...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 186:199-210 (1999) - doi:10.3354/meps186199 Seasonal variations in lipid and fatty acid composition of euphausiid Meganyctiphanes norvegica from Ligurian Sea Patrick Mayzaud*, Patti Virtue, Eric Albessard Observatoire Océanologique, Océanographie Biochimique et Ecologie, ESA-CNRS 7076, BP 28, 06230...
Fatty acids of the triacylglycerol (TG) and polar lipid (PL) fractions were compared from northern krill, Meganyctiphanes norvegica, sampled in Clyde Sea Atlantic, Kattegat at Alkor Deep, Ligurian Mediterranean. Possible biotransformations fatty food chain examined mixed zooplankton krill faecal material Kattegat. The population was distinguished populations terms both TG PL acid profiles. separated each other their profiles only. Krill winter all sites had significantly higher levels 20:1...
The fatty acid profiles of Euphausia superba , the Antarctic prymnesiophyte, Phaeocystis pouchetii and a temperate diatom, Phaeodactylum tricornutum were analysed compared. lipid content, class, sterol composition E. fed on each cultured phytoplankton mixed diet both species, determined. No significant difference was found between total levels reared these different diets. although deficient in number essential acids, is apparently an adequate food source for superba. proportion polyenoic...