ORCID Profile
0000-0002-3656-2318
Current Organisation
Southern Cross University
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Publisher: Elsevier BV
Date: 04-2022
DOI: 10.1016/J.MARENVRES.2022.105590
Abstract: Climate change is impacting living marine resources, whilst concomitantly, global reliance on seafood as a source of nutrition is increasing. Here we review an emerging research frontier, identifying significant impacts of climate-driven environmental change on the nutritional and sensory quality of seafood, and implications for human health. We highlight that changing ocean temperature, pH and salinity can lead to reductions in seafood macro and micronutrients, including essential nutrients such as protein and lipids. However, the nutritional quality of seafood appears to be more resilient in taxa that inhabit naturally variable environments such as estuaries and shallow near-coastal habitats. We develop criteria for assessing confidence in categorising the nutritional quality of seafood as vulnerable or resilient to climate change. The application of this criteria to a subset of seafood nutritional studies demonstrates confidence levels are generally low and could be improved by more realistic experimental designs and research collaboration. We highlight knowledge gaps to guide future research in this emerging field.
Publisher: Frontiers Media SA
Date: 11-08-2022
DOI: 10.3389/FMARS.2022.973801
Abstract: The effects of climate change on the distribution and biology of fisheries species have received substantial attention, but quantitative assessments of changes to taste and aroma determining compounds remain limited—despite sensory quality being a key driver of demand for most harvested species. Utilising the economically important blue swimmer crab ( Portunus armatus ), we tested the effects of temperature and salinity treatments aligned with near-future climate change projections on volatile and non-volatile sensory compounds that determine seafood flavour. Volatile compounds were analysed using solid phase microextraction and gas chromatography-mass spectrometry and non-volatiles were identified using liquid chromatography (mass spectrometry analysis). Multivariate analyses revealed that temperature, but not salinity, significantly affected the compositions of both volatile and non-volatile compounds in crab meat following a 30-day exposure period. Univariate analyses highlighted significant reductions in amino acids and amines associated with bitter and sweet organoleptic properties following exposure to elevated temperature. These results imply the potential for climate change to alter taste and aroma determining compounds in seafood, which could affect future harvesting priorities. Assessments of seafood sensory quality under climate change can produce valuable information to help predict shifts in fishing effort for harvested species that form the basis of important global fisheries.
Publisher: Springer Science and Business Media LLC
Date: 24-01-2019
DOI: 10.1038/S41598-018-37356-2
Abstract: Millions of people take animal pictures during wildlife interactions, yet the impacts of photographer behaviour and photographic flashes on animals are poorly understood. We investigated the pathomorphological and behavioural impacts of photographer behaviour and photographic flashes on 14 benthic fish species that are important for scuba ing tourism and aquarium displays. We ran a field study to test effects of photography on fish behaviour, and two laboratory studies that tested effects of photographic flashes on seahorse behaviour, and ocular and retinal anatomy. Our study showed that effects of photographic flashes are negligible and do not have stronger impacts than those caused solely by human presence. Photographic flashes did not cause changes in gross ocular and retinal anatomy of seahorses and did not alter feeding success. Physical manipulation of animals by photographing scuba ers, however, elicited strong stress responses. This study provides important new information to help develop efficient management strategies that reduce environmental impacts of wildlife tourism.
Publisher: Wiley
Date: 26-10-2023
DOI: 10.1111/FOG.12659
Publisher: Elsevier BV
Date: 12-2022
DOI: 10.1016/J.MARPOLBUL.2022.114239
Abstract: Fishes represent an important natural resource and yet their ersity and function in dynamic estuaries with relatively high levels of human pressure such as Sydney Harbour have rarely been quantified. Further, Eastern Australia supports the survival and persistence of an increasing number of tropical species found within temperate estuaries owing to increasing average ocean temperatures. A re-valuation of the number of fish species known from Sydney Harbour is therefore needed. In this study, we generated an up-to-date and annotated checklist of fishes recorded from Sydney Harbour based on verified natural history records as well as newly available citizen science records based on opportunistic observations and structured surveys. We explored the spatial and temporal distribution of these records. In addition, we quantified the function, conservation status, and commercial importance of the identified fishes. The number of fish species recorded from Sydney Harbour now stands at 675, an increase of 89 species (15 %) when compared to the most recent evaluation in 2013. We attribute this increase in fish ersity over a relatively short time to the contribution of newer citizen science programs as well as the influx and survival of fishes in the Harbour with preferences for warmer waters. Some fish families were also overrepresented in the more urbanized and polluted sections of the Harbour. In forecasting further environmental impacts on the fishes of Sydney Harbour, we recommend increased integration of collaborative citizen science programs and natural history collections as a means to track these changes.
Publisher: Elsevier BV
Date: 06-2023
Publisher: CSIRO Publishing
Date: 07-06-2023
DOI: 10.1071/MF22259
Abstract: Context Range-edge populations persist closer to their physiological thresholds, often limiting reproductive output. Kelps are foundation species on temperate reefs, but their reproductive phenology at range edges remains poorly understood. Aims We assess the reproductive phenology of Ecklonia radiata at its eastern Australian warm range edge in relation to local environmental conditions and make comparisons with populations throughout Australia. Methods E. radiata fertility was monitored over multiple years and environmental predictors of fertility were assessed using generalised additive models. Fertility responses were compared with data from centre and cold range-edge populations. Key results The proportion of fertile E. radiata plants increased as daylength declined and the length of fertile tissue was positively correlated with temperature. The magnitude of spore release was variable and responded to episodic swell and rainfall events. This is contrary to spore-release data from centre and cold range-edge populations, which demonstrated seasonal patterns correlated with temperature. Conclusion Spore release was lower at the warm range edge, yet year-round spore release demonstrated flexibility in response to local environmental conditions. Implications Flexible reproductive phenology of E. radiata at its warm range edge may be advantageous for sustaining populations at low latitudes under climate change.
Publisher: Wiley
Date: 08-09-2019
DOI: 10.1111/DDI.12980
Publisher: CSIRO Publishing
Date: 09-03-2023
DOI: 10.1071/MF22075
Abstract: Context The health of coral reefs is declining rapidly across the world because of anthropogenic impacts. In the mega- erse Coral Triangle, the consequences of chronic overfishing and human use are worst near coastal population centres. Aims The remote islands and reefs in the centre of the Banda Sea (Indonesia) remain largely unstudied, but their distance from populated areas could provide protection from fishing. Methods We conducted the first visual census surveys of coral-reef communities at the uninhabited Lucipara group in the Banda Sea. Key results Sites showed medium to high coral cover and fish assemblages with high biomass, including abundant large predatory species. All sites exceeded the fish biomass conservation target of 1150 kg ha−1 proposed by McClanahan et al. (2015), by a factor of ~2–10. Benthic cover explained % of variance in fish abundance and ersity, with submassive corals, Dendrophyllia spp., and bare rock as key predictors. Conclusions Our results suggested that Lucipara’s reefs are among the healthiest in Indonesia, likely owing to their remoteness. However, this remoteness might also h er policing against destructive fishing practices, highlighting a conservation gap. Implications Lucipara’s reef communities should be protected in a time of global coral-reef declines.
Publisher: Inter-Research Science Center
Date: 04-10-2018
DOI: 10.3354/MEPS12736
Location: Australia
Location: Australia
No related grants have been discovered for Tanika C Shalders.