ORCID Profile
0000-0003-0192-4339
Current Organisation
University of Tasmania
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Ecological Impacts of Climate Change | Ecological Applications | Conservation and Biodiversity | Fisheries Sciences not elsewhere classified | Ecology | Environmental Science and Management | Human Geography not elsewhere classified | Marine And Estuarine Ecology (Incl. Marine Ichthyology) | Natural Resource Management | Fisheries Sciences Not Elsewhere Classified | Evaluation Of Management Strategies |
ANZSRC Socio-Economic Objective (SEO)
Ecosystem Adaptation to Climate Change | Fisheries - Wild Caught not elsewhere classified | Marine Flora, Fauna and Biodiversity | Living resources (incl. impacts of fishing on non-target species) | Fish | Marine protected areas | Ecosystem Assessment and Management of Marine Environments
Related Links
Publications
Hot fish: The response to climate change by regional fisheries bodies
Publisher: Elsevier BV
Date: 2021
Climate change risks and adaptation options across Australian seafood supply chains – A preliminary assessment
Publisher: Elsevier BV
Date: 2014
Spot, log, map: Assessing a marine virtual citizen science program against Reed's best practice for stakeholder participation in environmental management
Publisher: Elsevier BV
Date: 2018
Food for all: designing sustainable and secure future seafood systems
Publisher: Authorea, Inc.
Date: 20-10-2020
Maximising the utility of bioelectrical impedance analysis for measuring fish condition requires identifying and controlling for sources of error
Publisher: Elsevier BV
Date: 09-2020
Effects of commercial fishing on the population structure of spawning southern calamary (Sepioteuthis australis)
Publisher: Springer Science and Business Media LLC
Date: 03-01-2007
Social licence in the marine sector: A review of understanding and application
Publisher: Elsevier BV
Date: 07-2017
Changes in muscle structure associated with somatic growth in Idiosepius pygmaeus, a small tropical cephalopod
Publisher: Wiley
Date: 08-1997
The potential impacts of climate change on inshore squid: biology, ecology and fisheries
Publisher: Springer Science and Business Media LLC
Date: 21-11-2007
Assessing the risk of climate change to aquaculture: A case study from south-east Australia
Publisher: Inter-Research Science Center
Date: 20-03-2013
DOI: 10.3354/AEI00058
Fisheries management approaches as platforms for climate change adaptation: comparing theory and practice in Australian fisheries
Publisher: Elsevier BV
Date: 09-2016
Oceanographic habitat suitability is positively correlated with the body condition of a coastal‐pelagic fish
Publisher: Wiley
Date: 21-10-2019
DOI: 10.1111/FOG.12457
Warming world, changing ocean: mitigation and adaptation to support resilient marine systems
Publisher: Springer Science and Business Media LLC
Date: 21-09-2022
Measuring the vulnerability of marine social-ecological systems: A prerequisite for the identification of climate change adaptations
Publisher: Resilience Alliance, Inc.
Date: 2015
Using stylet elemental signatures to determine the population structure of Octopus maorum
Publisher: Inter-Research Science Center
Date: 22-05-2008
DOI: 10.3354/MEPS07389
Somatic growth processes: how are they altered in captivity?
Publisher: The Royal Society
Date: 07-06-1999
Defining and observing stages of climate-mediated range shifts in marine systems
Publisher: Elsevier BV
Date: 05-2014
Adapting Management of Marine Environments to a Changing Climate: A Checklist to Guide Reform and Assess Progress
Publisher: Springer Science and Business Media LLC
Date: 19-10-2015
Towards a diagnostic approach to climate adaptation for fisheries
Publisher: Springer Science and Business Media LLC
Date: 31-10-2014
Attributes of climate resilience in fisheries: From theory to practice
Publisher: Wiley
Date: 29-11-2021
DOI: 10.1111/FAF.12630
Abstract: In a changing climate, there is an imperative to build coupled social‐ecological systems—including fisheries—that can withstand or adapt to climate stressors. Although resilience theory identifies system attributes that supposedly confer resilience, these attributes have rarely been clearly defined, mechanistically explained, nor tested and applied to inform fisheries governance. Here, we develop and apply a comprehensive resilience framework to examine fishery systems across (a) ecological, (b) socio‐economic and (c) governance dimensions using five resilience domains: assets, flexibility, organization, learning and agency. We distil and define 38 attributes that confer climate resilience from a coupled literature‐ and expert‐driven approach, describe how they apply to fisheries and provide illustrative ex les of resilience attributes in action. Our synthesis highlights that the directionality and mechanism of these attributes depend on the specific context, capacities, and scale of the focal fishery system and associated stressors, and we find evidence of interdependencies among attributes. Overall, however, we find few studies that test resilience attributes in fisheries across all parts of the system, with most ex les focussing on the ecological dimension. As such, meaningful quantification of the attributes’ contributions to resilience remains a challenge. Our synthesis and holistic framework represent a starting point for critical application of resilience concepts to fisheries social‐ecological systems.
The ecological role of cephalopods and their representation in ecosystem models
Publisher: Springer Science and Business Media LLC
Date: 04-2019
Public Interest in Marine Citizen Science: Is there Potential for Growth?
Publisher: Oxford University Press (OUP)
Date: 02-06-2016
Social licence through citizen science: A tool for marine conservation
Publisher: Cold Spring Harbor Laboratory
Date: 21-02-2018
DOI: 10.1101/266692
Building leaders for the UN Ocean Science Decade: a guide to supporting early career women researchers within academic marine research institutions
Publisher: Oxford University Press (OUP)
Date: 16-12-2022
Abstract: Diverse and inclusive marine research is paramount to addressing ocean sustainability challenges in the 21st century, as envisioned by the UN Decade of Ocean Science for Sustainable Development. Despite increasing efforts to ersify ocean science, women continue to face barriers at various stages of their career, which inhibits their progression to leadership within academic institutions. In this perspective, we draw on the collective experiences of thirty-four global women leaders, bolstered by a narrative review, to identify practical strategies and actions that will help empower early career women researchers to become the leaders of tomorrow. We propose five strategies: (i) create a more inclusive culture, (ii) ensure early and equitable career development opportunities for women ECRs, (iii) ensure equitable access to funding for women ECRs, (iv) offer mentoring opportunities and, (v) create flexible, family-friendly environments. Transformational, meaningful, and lasting change will only be achieved through commitment and collaborative action across various scales and by multiple stakeholders.
Life history traits of the temperate mini-maximalist Idiosepius notoides, (Cephalopoda: Sepioidea)
Publisher: Cambridge University Press (CUP)
Date: 12-2003
DOI: 10.1017/S0025315403008701
Abstract: Age, growth and maturation of the temperate ‘mini-maximalist’ Idiosepius notoides from Tasmania is described and compared with those of its tropical congener Idiosepius pygmaeus . Using statolith increment analysis, growth of I. notoides was best described by a power curve with a maximum age of 115 days recorded. Males have a shorter lifespan than females, however growth rates were similar between the sexes. Idiosepius notoides grows to a larger size than its tropical counterpart. Onset of maturity in I. notoides occurred at an age of approximately 68 days for males and 88 days for females compared to 45–60 days for I. pygmaeus . Size at onset of sexual maturity was analogous between the two species, with males mature at approximately 6·5 mm mantle length (ML) and females at 14·0 mm ML. Idiosepius notoides , like I. pygmaeus , is a small short-lived sepioid with significant gender dimorphism and the capacity to spawn multiple times throughout its short life. This research supports the concept of similar cephalopod species living longer and growing larger in cooler environments.
Communication and trust-building with the broader public through Coastal and Marine citizen science
Publisher: Routledge
Date: 31-10-2017
A cross-scale framework to support a mechanistic understanding and modelling of marine climate-driven species redistribution, from individuals to communities
Publisher: Wiley
Date: 04-08-2020
DOI: 10.1111/ECOG.04996
Species traits and climate velocity explain geographic range shifts in an ocean warming hotspot
Publisher: Wiley
Date: 20-07-2015
DOI: 10.1111/ELE.12474
Abstract: Species' ranges are shifting globally in response to climate warming, with substantial variability among taxa, even within regions. Relationships between range dynamics and intrinsic species traits may be particularly apparent in the ocean, where temperature more directly shapes species' distributions. Here, we test for a role of species traits and climate velocity in driving range extensions in the ocean-warming hotspot of southeast Australia. Climate velocity explained some variation in range shifts, however, including species traits more than doubled the variation explained. Swimming ability, omnivory and latitudinal range size all had positive relationships with range extension rate, supporting hypotheses that increased dispersal capacity and ecological generalism promote extensions. We find independent support for the hypothesis that species with narrow latitudinal ranges are limited by factors other than climate. Our findings suggest that small-ranging species are in double jeopardy, with limited ability to escape warming and greater intrinsic vulnerability to stochastic disturbances.
Persecuting, protecting or ignoring biodiversity under climate change
Publisher: Springer Science and Business Media LLC
Date: 08-07-2019
World Octopus Fisheries
Publisher: Informa UK Limited
Date: 06-12-2019
Ecological connectivity between the areas beyond national jurisdiction and coastal waters: Safeguarding interests of coastal communities in developing countries
Publisher: Elsevier BV
Date: 06-2019
Tools to Enrich Vulnerability Assessment and Adaptation Planning for Coastal Communities in Data-Poor Regions: Application to a Case Study in Madagascar
Publisher: Frontiers Media SA
Date: 09-01-2019
Autonomous adaptation to climate-driven change in marine biodiversity in a global marine hotspot
Publisher: Springer Science and Business Media LLC
Date: 16-05-2019
Climate‐driven ‘species‐on‐the‐move’ provide tangible anchors to engage the public on climate change
Publisher: Wiley
Date: 18-07-2023
DOI: 10.1002/PAN3.10495
Abstract: Over recent decades, our understanding of climate change has accelerated greatly, but unfortunately, observable impacts have increased in tandem. Both mitigation and adaptation have not progressed at the level or scale warranted by our collective knowledge on climate change. More effective approaches to engage people on current and future anthropogenic climate change effects are urgently needed. Here, we show how species whose distributions are shifting in response to climate change, that is, ‘species‐on‐the‐move’, present an opportunity to engage people with climate change by linking to human values, and our deep connections with the places in which we live, in a locally relevant yet globally coherent narrative. Species‐on‐the‐move can impact ecosystem structure and function, food security, human health, livelihoods, culture and even the climate itself through feedback to the climate system, presenting a wide variety of potential pathways for people to understand that climate change affects them personally as in iduals. Citizen science focussed on documenting changes in bio ersity is one approach to foster a deeper engagement on climate change. However, other possible avenues, which may offer potential to engage people currently unconnected with nature, include arts, games or collaborations with rural agriculture (e.g. new occurrences of pest species) or fisheries organisations (e.g. shifting stocks) or healthcare providers (e.g. changing distributions of disease vectors). Through the importance we place on the aspects of life impacted by the redistribution of species around us, species‐on‐the‐move offer emotional pathways to connect with people on the complex issue of climate change in profound ways that have the potential to engender interest and action on climate change. Read the free Plain Language Summary for this article on the Journal blog.
Batch or trickle: understanding the multiple spawning strategy of southern calamary, Sepioteuthis australis (Mollusca : Cephalopoda)
Publisher: CSIRO Publishing
Date: 2008
DOI: 10.1071/MF07200
Abstract: Many cephalopods are ‘multiple spawners’ however, we know little about the timing and dynamics of egg production. This has implications for the allocation of energy to reproduction, lifetime fecundity and subsequent recruitment. The current study aimed to determine if Sepioteuthis australis (Quoy and Gaimard, 1832), which spawns multiple times, produces mature oocytes for deposition in a continuous trickle or in larger discrete batches. Throughout a spawning season, developmental stages were assigned to the ovaries of each female by combining macroscopic and histological analyses of the oocytes. Half of the females (46%) showed a significant peak in oocytes at one of the maturation stages, indicating that females were developing eggs in batches. It was hypothesised that the remaining females were also batch spawning, given that the oviduct weights of the remaining females (54%) were high and the other measured biological characteristics were similar to those of the females showing a peak in oocyte stage. Average batch fecundity declined over the 3-month spawning season, but total egg numbers in the ovary increased, suggesting that females might have deposited small batches more often during December. As reproduction requires large allocations of energy, understanding how females distribute reproductive effort throughout their lives is crucial to understanding the behaviour of populations, in iduals and their offspring.
Social license through citizen science: a tool for marine conservation
Publisher: Resilience Alliance, Inc.
Date: 2019
Responding to climate change: participatory evaluation of adaptation options for key marine fisheries in Australia?s south east
Publisher: Frontiers Media SA
Date: 06-03-2020
World Squid Fisheries
Publisher: Informa UK Limited
Date: 03-04-2015
Modelling marine community responses to climate-driven species redistribution to guide monitoring and adaptive ecosystem-based management
Publisher: Wiley
Date: 25-04-2016
DOI: 10.1111/GCB.13285
Abstract: As a consequence of global climate-driven changes, marine ecosystems are experiencing polewards redistributions of species - or range shifts - across taxa and throughout latitudes worldwide. Research on these range shifts largely focuses on understanding and predicting changes in the distribution of in idual species. The ecological effects of marine range shifts on ecosystem structure and functioning, as well as human coastal communities, can be large, yet remain difficult to anticipate and manage. Here, we use qualitative modelling of system feedback to understand the cumulative impacts of multiple species shifts in south-eastern Australia, a global hotspot for ocean warming. We identify range-shifting species that can induce trophic cascades and affect ecosystem dynamics and productivity, and evaluate the potential effectiveness of alternative management interventions to mitigate these impacts. Our results suggest that the negative ecological impacts of multiple simultaneous range shifts generally add up. Thus, implementing whole-of-ecosystem management strategies and regular monitoring of range-shifting species of ecological concern are necessary to effectively intervene against undesirable consequences of marine range shifts at the regional scale. Our study illustrates how modelling system feedback with only limited qualitative information about ecosystem structure and range-shifting species can predict ecological consequences of multiple co-occurring range shifts, guide ecosystem-based adaptation to climate change and help prioritise future research and monitoring.
Progress in integrating natural and social science in marine ecosystem-based management research
Publisher: CSIRO Publishing
Date: 2018
DOI: 10.1071/MF17248
Abstract: Climate change, in combination with population growth, is placing increasing pressure on the world’s oceans and their resources. This is threatening sustainability and societal wellbeing. Responding to these complex and synergistic challenges requires holistic management arrangements. To this end, ecosystem-based management (EBM) promises much by recognising the need to manage the ecosystem in its entirety, including the human dimensions. However, operationalisation of EBM in the marine environment has been slow. One reason may be a lack of the inter-disciplinary science required to address complex social–ecological marine systems. In the present paper, we synthesise the collective experience of the authors to explore progress in integrating natural and social sciences in marine EBM research, illustrating actual and potential contributions. We identify informal barriers to and incentives for this type of research. We find that the integration of natural and social science has progressed at most stages of the marine EBM cycle however, practitioners do not yet have the capacity to address all of the problems that have led to the call for inter-disciplinary research. In addition, we assess how we can support the next generation of researchers to undertake the effective inter-disciplinary research required to assist with operationalising marine EBM, particularly in a changing climate.
Citizens as Scientists
Publisher: SAGE Publications
Date: 10-07-2016
Abstract: Public participation in science is burgeoning, yet little is known about factors that influence potential volunteers. We present results from a national survey of 1,145 marine users to uncover the drivers and barriers to a sightings-based, digital marine citizen science project. Knowledge of marine species is the most significant barrier and driver for participation. Many marine users perceive that they have insufficient knowledge of marine species to contribute to the project, yet they expect to learn more about marine species if they were to participate. Contributing to scientific knowledge is also a strong driver for many marine users to participate.
Introduction: Autochthonous human adaptation to biodiversity change in the Anthropocene
Publisher: Springer Science and Business Media LLC
Date: 23-11-2019
Developing achievable alternate futures for key challenges during the UN Decade of Ocean Science for Sustainable Development
Publisher: Springer Science and Business Media LLC
Date: 03-01-2022
Functional traits explain trophic allometries of cephalopods
Publisher: Wiley
Date: 28-09-2020
The short history of research in a marine climate change hotspot: From anecdote to adaptation in south-east Australia
Publisher: Springer Science and Business Media LLC
Date: 29-09-2014
Rapid assessment of an ocean warming hotspot reveals “high” confidence in potential species’ range extensions
Publisher: Elsevier BV
Date: 03-2015
An Assessment of How Australian Fisheries Management Plans Account for Climate Change Impacts
Publisher: Frontiers Media SA
Date: 23-12-2020
DOI: 10.3389/FMARS.2020.591642
Abstract: For Australian fisheries to remain productive and sustainable (environmentally and commercially), there is a need to incorporate climate change considerations into management and planning, and to implement planned climate adaptation options. Here, we determine the extent to which Australian state fisheries management documents consider issues relating to climate change, as well as how frequently climate change is considered a research funding priority within fisheries research in Australia. We conduct a content analysis of fisheries management documents investigating categories and themes relating to Australian state fisheries, climate, and environmental change. We also reviewed recent Research Priorities from the major fisheries research funding body for reference to climate change related themes, and the number of subsequently funded projects which considered climate change or related topics. Results show that commercial state fisheries management documents consider climate only to a limited degree in comparison to other topics, with less than one-quarter of all fisheries management documents having content relating to climate. However, we find that the south-east and south-west regions of the Australian coastline have the highest incorporation of “climate” and “environmental protection considerations” in their fisheries management documents, and that fisheries are more likely to have more “climate-related mentions” within their related management documents, if they (i) primarily target species with higher economic commercial catch values, (ii) commercial catch weights, or (iii) a greater number of commercial fish stocks existing. Only a small number of recently funded fisheries research projects considered climate change, representing only a small proportion of fisheries research investment. Given the extensive climate-driven impacts recently documented among key Australian fisheries species and associated ecosystems, we conclude that there is a clear need for fisheries management in Australia to consider longer-term climate adaptation strategies for Australian commercial state fisheries to remain sustainable into the future. We suggest that without additional climate-related fisheries research and funding, many Australian agencies and fisheries may not be prepared for the impacts and subsequent adaptation efforts required for sustainable fisheries under climate change.
Empirical evidence for different cognitive effects in explaining the attribution of marine range shifts to climate change
Publisher: Oxford University Press (OUP)
Date: 23-11-2015
Abstract: The changing geographical distribution of species, or range shift, is one of the better documented fingerprints of climate change in the marine environment. Range shifts may also lead to dramatic changes in the distribution of economic, social, and cultural opportunities. These challenge marine resource users' capacity to adapt to a changing climate and managers' ability to implement adaptation plans. In particular, a reluctance to attribute marine range shift to climate change can undermine the effectiveness of climate change communications and pose a potential barrier to successful adaptation. Attribution is a known powerful predictor of behavioural intention. Understanding the cognitive processes that underpin the formation of marine resource users' beliefs about the cause of observed marine range shift phenomena is therefore an important topic for research. An examination of the attribution by marine resource users of three types of range shifts experienced in a marine climate change hotspot in southeast Australia to various climate and non-climate drivers indicates the existence of at least three contributing cognitions. These are: (i) engrained mental representations of environmental phenomena, (ii) scientific complexity in the attribution pathway, and (iii) dissonance from the positive or negative nature of the impact. All three play a part in explaining the complex pattern of attribution of marine climate change range shifts, and should be considered when planning for engagement with stakeholders and managers around adaptation to climate change.
Physiological mechanisms linking cold acclimation and the poleward distribution limit of a range-extending marine fish
Publisher: Oxford University Press (OUP)
Date: 2020
Abstract: Extensions of species’ geographical distributions, or range extensions, are among the primary ecological responses to climate change in the oceans. Considerable variation across the rates at which species’ ranges change with temperature hinders our ability to forecast range extensions based on climate data alone. To better manage the consequences of ongoing and future range extensions for global marine bio ersity, more information is needed on the biological mechanisms that link temperatures to range limits. This is especially important at understudied, low relative temperatures relevant to poleward range extensions, which appear to outpace warm range edge contractions four times over. Here, we capitalized on the ongoing range extension of a teleost predator, the Australasian snapper Chrysophrys auratus, to examine multiple measures of ecologically relevant physiological performance at the population’s poleward range extension front. Swim tunnel respirometry was used to determine how mid-range and poleward range edge winter acclimation temperatures affect metabolic rate, aerobic scope, swimming performance and efficiency and recovery from exercise. Relative to ‘optimal’ mid-range temperature acclimation, subsequent range edge minimum temperature acclimation resulted in absolute aerobic scope decreasing while factorial aerobic scope increased efficiency of swimming increased while maximum sustainable swimming speed decreased and recovery from exercise required a longer duration despite lower oxygen payback. Cold-acclimated swimming faster than 0.9 body lengths sec−1 required a greater proportion of aerobic scope despite decreased cost of transport. Reduced aerobic scope did not account for declines in recovery and lower maximum sustainable swimming speed. These results suggest that while performances decline at range edge minimum temperatures, cold-acclimated snapper are optimized for energy savings and range edge limitation may arise from suboptimal temperature exposure throughout the year rather than acute minimum temperature exposure. We propose incorporating performance data with in situ behaviour and environmental data in bioenergetic models to better understand how thermal tolerance determines range limits.
Effects of climate change on coral grouper (Plectropomus spp.) and possible adaptation options
Publisher: Springer Science and Business Media LLC
Date: 19-12-2017
Social licence for marine protected areas
Publisher: Elsevier BV
Date: 05-2020
Reproductive capacity of a marine species (Octopus tetricus) within a recent range extension area
Publisher: CSIRO Publishing
Date: 2015
DOI: 10.1071/MF14126
Abstract: To persist in the face of environmental change, species must adjust to the new conditions or change their geographical distribution, e.g. by range extension. Success for in iduals within a zone of range extension requires the new environment to support their capacity to produce viable gametes and survival of the offspring. Reproductive characteristics of the polewards range-shifting Octopus tetricus were examined within the new range off north-eastern Tasmania, Australia, to assess whether it is likely to successfully establish in this extended area of its range. Approximately 44% of captured males and 14% of captured females were mature. Mature females with developing eggs were found throughout the year. Greater numbers of mature females were observed during the austral summer and spring, whereas mature males were observed all year round. Fecundity was high and developing embryos appeared to be viable. Our results suggest that O. tetricus is successfully reproducing beyond its historical range, the reproductive cycle is timed to favourable environmental conditions, and the population has the potential to be self-sustainable. The reproductive biology of O. tetricus may thus facilitate the establishment and prevalence of the population into new environments beyond the known historical distribution.
Climate change impacts on China’s marine ecosystems
Publisher: Springer Science and Business Media LLC
Date: 28-06-2021
Engaged Journalism and Climate Change: Lessons From an Audience-led, Locally Focused Australian Collaboration
Publisher: Informa UK Limited
Date: 10-08-2022
Co-production of knowledge and strategies to support climate resilient fisheries
Publisher: Oxford University Press (OUP)
Date: 21-06-2022
Abstract: Knowledge co-production offers a promising approach to design effective and equitable pathways to reach development goals. Fisheries Strategies for Changing Oceans and Resilient Ecosystems by 2030 (FishSCORE), a United Nations Ocean Decade programme, will co-produce knowledge that advances solutions for climate resilient fisheries through networks and partnerships that include scientists, stakeholders, practitioners, managers, and policy experts. FishSCORE will establish (1) a global network that will develop broadly relevant information and tools to assess and operationalize climate resilience in marine fisheries and (2) local and regional partnerships that will apply those tools to identify and forward context-specific resilience strategies. FishSCORE's activities will be guided by a set of core principles that include commitments to inclusivity, equity, co-leadership, co-ownership, and reciprocity. FishSCORE will focus on identifying solutions for climate resilient fisheries, and it will also advance goals associated with capacity, power, and agency that will support iterative, pluralistic approaches to decision-making in fisheries experiencing ongoing climate-driven changes. This process of co-producing knowledge and strategies requires considerable investments of time from all partners, which is well aligned with the Ocean Decade. However, secure funding must be prioritized to support and implement co-production activities over this long time horizon.
Prioritization of the Sustainable Development Goals Drives Opportunities and Risks for a Blue Future
Publisher: Elsevier BV
Date: 2019
DOI: 10.2139/SSRN.3439664
Bridging the Gap Between Ocean Acidification Impacts and Economic Valuation: Regional Impacts of Ocean Acidification on Fisheries and Aquaculture
Publisher: International Union for Conservation of Nature
Date: 22-05-2015
Preface
Publisher: Springer Science and Business Media LLC
Date: 14-03-2007
Ocean warming hotspots provide early warning laboratories for climate change impacts
Publisher: Springer Science and Business Media LLC
Date: 04-05-2014
Explaining Ocean Warming: Causes, scale, effects and consequences
Publisher: IUCN, International Union for Conservation of Nature
Date: 02-09-2016
Quantitative elemental imaging of octopus stylets using PIXE and the nuclear microprobe
Publisher: Elsevier BV
Date: 2008
Assessing the validity of stylets as ageing tools in Octopus pallidus
Publisher: Elsevier BV
Date: 10-2006
To Achieve a Sustainable Blue Future, Progress Assessments Must Include Interdependencies between the Sustainable Development Goals
Publisher: Elsevier BV
Date: 02-2020
Socio-economic and management implications of range-shifting species in marine systems
Publisher: Elsevier BV
Date: 02-2012
Rapid shifts in distribution and high‐latitude persistence of oceanographic habitat revealed using citizen science data from a climate change hotspot
Publisher: Wiley
Date: 08-2018
DOI: 10.1111/GCB.14398
Abstract: The environmental effects of climate change are predicted to cause distribution shifts in many marine taxa, yet data are often difficult to collect. Quantifying and monitoring species' suitable environmental habitats is a pragmatic approach for assessing changes in species distributions but is underdeveloped for quantifying climate change induced range shifts in marine systems. Specifically, habitat predictions present opportunities for quantifying spatiotemporal distribution changes while accounting for sources of natural climate variation. Here we demonstrate the utility of a marine-based habitat model parameterized using citizen science data and remotely sensed environmental covariates for quantifying shifts in oceanographic habitat suitability over 22 years for a coastal-pelagic fish species in a climate change hotspot. Our analyses account for the effects of natural intra- and interannual climate variability to reveal rapid poleward shifts in core (94.4 km/decade) and poleward edge (108.8 km/decade) oceanographic habitats. Temporal persistence of suitable oceanographic habitat at high latitudes also increased by approximately 3 months over the study period. Our approach demonstrates how marine citizen science data can be used to quantify range shifts, but necessitates shifting focus from species distributions directly, to the distribution of species' environmental habitat preferences.
A practical framework for implementing and evaluating integrated management of marine activities
Publisher: Elsevier BV
Date: 07-2019
Growth opportunities for marine fisheries and aquaculture industries in a changing climate
Publisher: Wiley
Date: 31-10-2014
Fish body sizes change with temperature but not all species shrink with warming
Publisher: Springer Science and Business Media LLC
Date: 06-04-2020
Modelling size-at-age in wild immature female octopus: a bioenergetics approach
Publisher: Inter-Research Science Center
Date: 24-02-2029
DOI: 10.3354/MEPS08035
Citizen science and social licence: Improving perceptions and connecting marine user groups
Publisher: Elsevier BV
Date: 08-2019
Governance Mapping: a framework for assessing the adaptive capacity of marine resource governance to environmental change
Publisher: Elsevier BV
Date: 08-2019
Going with the flow: the role of ocean circulation in global marine ecosystems under a changing climate
Publisher: Wiley
Date: 27-01-2017
DOI: 10.1111/GCB.13586
Abstract: Ocean warming, acidification, deoxygenation and reduced productivity are widely considered to be the major stressors to ocean ecosystems induced by emissions of CO
A multilevel approach to examining cephalopod growth usingOctopus pallidusas a model
Publisher: The Company of Biologists
Date: 15-08-2011
DOI: 10.1242/JEB.051631
Abstract: Many aspects of octopus growth dynamics are poorly understood, particularly in relation to sub-adult or adult growth, muscle fibre dynamics and repro-somatic investment. The growth of 5 month old Octopus pallidus cultured in the laboratory was investigated under three temperature regimes over a 12 week period: seasonally increasing temperatures (14–18°C) seasonally decreasing temperatures (18–14°C) and a constant temperature mid-way between seasonal peaks (16°C). Differences in somatic growth at the whole-animal level, muscle tissue structure and rate of gonad development were investigated. Continuous exponential growth was observed, both at a group and at an in idual level, and there was no detectable effect of temperature on whole-animal growth rate. Juvenile growth rate (from 1 to 156 days) was also monitored prior to the controlled experiment exponential growth was observed, but at a significantly faster rate than in the older experimental animals, suggesting that O. pallidus exhibit a double-exponential two-phase growth pattern. There was considerable variability in size-at-age even between in iduals growing under identical thermal regimes. Animals exposed to seasonally decreasing temperatures exhibited a higher rate of gonad development compared with animals exposed to increasing temperatures however, this did not coincide with a detectable decline in somatic growth rate or mantle condition. The ongoing production of new mitochondria-poor and mitochondria-rich muscle fibres (hyperplasia) was observed, indicated by a decreased or stable mean muscle fibre diameter concurrent with an increase in whole-body size. Animals from both seasonal temperature regimes demonstrated higher rates of new mitochondria-rich fibre generation relative to those from the constant temperature regime, but this difference was not reflected in a difference in growth rate at the whole-body level. This is the first study to record ongoing hyperplasia in the muscle tissue of an octopus species, and provides further insight into the complex growth dynamics of octopus.
From physics to fish to folk: Supporting coastal regional communities to understand their vulnerability to climate change in Australia
Publisher: Wiley
Date: 30-12-2016
DOI: 10.1111/FOG.12139
Stakeholder influence and relationships inform engagement strategies in marine conservation
Publisher: Informa UK Limited
Date: 2021
Climate, currents and species traits contribute to early stages of marine species redistribution
Publisher: Springer Science and Business Media LLC
Date: 03-12-2022
DOI: 10.1038/S42003-022-04273-0
Abstract: Anthropogenic climate change is causing a rapid redistribution of life on Earth, particularly in the ocean, with profound implications for humans. Yet warming-driven range shifts are known to be influenced by a variety of factors whose combined effects are still little understood. Here, we use scientist-verified out-of-range observations from a national citizen-science initiative to assess the combined effect of long-term warming, climate extremes (i.e., heatwaves and cold spells), ocean currents, and species traits on early stages of marine range extensions in two warming ‘hotspot’ regions of southern Australia. We find effects of warming to be contingent upon complex interactions with the strength of ocean currents and their mutual directional agreement, as well as species traits. Our study represents the most comprehensive account to date of factors driving early stages of marine species redistributions, providing important evidence for the assessment of the vulnerability of marine species distributions to climate change.
Setting objectives for evaluating management adaptation actions to address climate change impacts in south-eastern Australian fisheries
Publisher: Wiley
Date: 04-2016
DOI: 10.1111/FOG.12137
Managing consequences of climate-driven species redistribution requires integration of ecology, conservation and social science
Publisher: Wiley
Date: 06-2018
DOI: 10.1111/BRV.12344
Abstract: Climate change is driving a pervasive global redistribution of the planet's species. Species redistribution poses new questions for the study of ecosystems, conservation science and human societies that require a coordinated and integrated approach. Here we review recent progress, key gaps and strategic directions in this nascent research area, emphasising emerging themes in species redistribution biology, the importance of understanding underlying drivers and the need to anticipate novel outcomes of changes in species ranges. We highlight that species redistribution has manifest implications across multiple temporal and spatial scales and from genes to ecosystems. Understanding range shifts from ecological, physiological, genetic and biogeographical perspectives is essential for informing changing paradigms in conservation science and for designing conservation strategies that incorporate changing population connectivity and advance adaptation to climate change. Species redistributions present challenges for human well-being, environmental management and sustainable development. By synthesising recent approaches, theories and tools, our review establishes an interdisciplinary foundation for the development of future research on species redistribution. Specifically, we demonstrate how ecological, conservation and social research on species redistribution can best be achieved by working across disciplinary boundaries to develop and implement solutions to climate change challenges. Future studies should therefore integrate existing and complementary scientific frameworks while incorporating social science and human-centred approaches. Finally, we emphasise that the best science will not be useful unless more scientists engage with managers, policy makers and the public to develop responsible and socially acceptable options for the global challenges arising from species redistributions.
Adaptive management of fisheries in response to climate change
Publisher: FAO
Date: 02-2021
DOI: 10.4060/CB3095EN
Ten tips for developing interdisciplinary socio-ecological researchers
Publisher: Springer Science and Business Media LLC
Date: 06-2019
Climate change cascades: Shifts in oceanography, species' ranges and subtidal marine community dynamics in eastern Tasmania
Publisher: Elsevier BV
Date: 04-2011
Identification of global marine hotspots: sentinels for change and vanguards for adaptation action
Publisher: Springer Science and Business Media LLC
Date: 24-09-2013
Changing windows of opportunity: past and future climate-driven shifts in temporal persistence of kingfish (Seriola lalandi) oceanographic habitat within south-eastern Australian bioregions
Publisher: CSIRO Publishing
Date: 2019
DOI: 10.1071/MF17387
Abstract: Climate-driven shifts in species distributions are occurring rapidly within marine systems and are predicted to continue under climate change. To effectively adapt, marine resource users require information relevant to their activities at decision-making timescales. We model oceanographic habitat suitability for kingfish (Seriola lalandi) from south-eastern Australia using multiple environmental variables at monthly time steps over the period 1996–2040. Habitat predictions were used to quantify the temporal persistence (months per year) of suitable oceanographic habitat within six coastal bioregions. A decline in temporal habitat persistence is predicted for the northernmost (equatorward) bioregion, whereas increases are predicted for the three southernmost (poleward) bioregions. We suggest that temporal habitat persistence is an important metric for climate change adaptation because it provides fishery-relevant information. Our methods demonstrate how novel metrics relevant to climate adaptation can be derived from predictions of species’ environmental habitats, and are appropriate for the management of fisheries resources and protection of high conservation value species under future climate change.
Prepared for change? An assessment of the current state of knowledge to support climate adaptation for Australian fisheries
Publisher: Springer Science and Business Media LLC
Date: 05-09-2019
Long‐term shifts in abundance and distribution of a temperate fish fauna: a response to climate change and fishing practices
Publisher: Wiley
Date: 08-12-2010
The burden of bad news: educators’ experiences of navigating climate change education
Publisher: Informa UK Limited
Date: 23-07-2023
The dynamics of the summer-spawning population of the loliginid squid Sepioteuthis australis in Tasmania, Australia—a conveyor belt of recruits
Publisher: Oxford University Press (OUP)
Date: 2003
DOI: 10.1016/S1054-3139(03)00007-9
Abstract: The population dynamics of the loliginid squid Sepioteuthis australis was examined on a fine temporal scale during a 2-month period of rising sea-surface temperatures on the summer inshore spawning grounds of Coles Bay, Tasmania, Australia. S les were taken regularly (generally weekly) to discern any short-term population changes in age, growth or reproductive parameters. There was no change in the mean age, mantle length or weight of males or females through the study period (November and December 1996). This indicated that instead of following one or a few discrete cohorts of spawning in iduals, there were continuous waves of new in iduals moving onto the spawning beds, which may be best described by a conveyer belt of new recruits. There was an abrupt and significant difference in the mean oviduct egg size in females caught between November and December but the factors responsible for this remain unknown. Few squid showed evidence of recent feeding, suggesting that they move off the spawning grounds to feed.
Marine recreational fishing and the implications of climate change
Publisher: Wiley
Date: 15-07-2019
DOI: 10.1111/FAF.12392
Cephalopod hatchling growth: the effects of initial size and seasonal temperatures
Publisher: Springer Science and Business Media LLC
Date: 19-12-2006
Diverse pathways for climate resilience in marine fishery systems
Publisher: Wiley
Date: 26-09-2023
DOI: 10.1111/FAF.12790
Life history of a short-lived squid (Sepioteuthis australis): resource allocation as a function of size, growth, maturation, and hatching season
Publisher: Oxford University Press (OUP)
Date: 2006
DOI: 10.1016/J.ICESJMS.2006.04.007
Abstract: Many cephalopods continue growing while laying multiple egg batches over the adult life, with repro-somatic allocation continuing beyond attainment of reproductive maturity. Many species show extreme in idual variation in reproductive investment. Factors driving this variation in adult Sepioteuthis australis were evaluated by examining allocation of energy to somatic and reproductive growth as a function of body shape, growth rate, maturation, and hatching season. Hatching season influence was sex-specific males hatched in warmer months had greater reproductive investment, faster growth, and better somatic and reproductive condition, whereas females hatched in spring and summer had less reproductive investment. Seasonal impacts on life history resulted in an “alternation of generations”, with slow-growing squid in poor condition and with high levels of reproductive investment producing a generation with completely different life-history characteristics. This suggests that abiotic and biotic conditions that change seasonally could play a large role in determining energy allocated to reproduction. However, this was not driving trade-offs between size and number of offspring. Life-history trade-offs should be detectable as negative correlations between relevant traits. However, in Sepioteuthis australis there was little evidence of trade-offs between reproduction and growth or condition of in iduals, suggesting a “live for today” lifestyle.
Multiple measures of thermal performance of early stage eastern rock lobster in a fast-warming ocean region
Publisher: Inter-Research Science Center
Date: 15-08-2019
DOI: 10.3354/MEPS13054
Safeguarding marine life: conservation of biodiversity and ecosystems
Publisher: Authorea, Inc.
Date: 11-11-2020
Temperature alters the physiological response of spiny lobsters under predation risk
Publisher: Oxford University Press (OUP)
Date: 2020
Abstract: Predation risk can strongly shape prey ecological traits, with specific anti-predator responses displayed to reduce encounters with predators. Key environmental drivers, such as temperature, can profoundly modulate prey energetic costs in ectotherms, although we currently lack knowledge of how both temperature and predation risk can challenge prey physiology and ecology. Such uncertainties in predator–prey interactions are particularly relevant for marine regions experiencing rapid environmental changes due to climate change. Using the octopus (Octopus maorum)–spiny lobster (Jasus edwardsii) interaction as a predator–prey model, we examined different metabolic traits of sub adult spiny lobsters under predation risk in combination with two thermal scenarios: ‘current’ (20°C) and ‘warming’ (23°C), based on projections of sea-surface temperature under climate change. We examined lobster standard metabolic rates to define the energetic requirements at specific temperatures. Routine metabolic rates (RMRs) within a respirometer were used as a proxy of lobster activity during night and day time, and active metabolic rates, aerobic scope and excess post-exercise oxygen consumption were used to assess the energetic costs associated with escape responses (i.e. tail-flipping) in both thermal scenarios. Lobster standard metabolic rate increased at 23°C, suggesting an elevated energetic requirement (39%) compared to 20°C. Unthreatened lobsters displayed a strong circadian pattern in RMR with higher rates during the night compared with the day, which were strongly magnified at 23°C. Once exposed to predation risk, lobsters at 20°C quickly reduced their RMR by ~29%, suggesting an immobility or ‘freezing’ response to avoid predators. Conversely, lobsters acclimated to 23°C did not display such an anti-predator response. These findings suggest that warmer temperatures may induce a change to the typical immobility predation risk response of lobsters. It is hypothesized that heightened energetic maintenance requirements at higher temperatures may act to override the normal predator-risk responses under climate-change scenarios.
Species on the move around the Australian coastline: A continental‐scale review of climate‐driven species redistribution in marine systems
Publisher: Wiley
Date: 07-05-2021
DOI: 10.1111/GCB.15634
Abstract: Climate‐driven changes in the distribution of species are a pervasive and accelerating impact of climate change, and despite increasing research effort in this rapidly emerging field, much remains unknown or poorly understood. We lack a holistic understanding of patterns and processes at local, regional and global scales, with detailed explorations of range shifts in the southern hemisphere particularly under‐represented. Australian waters encompass the world's third largest marine jurisdiction, extending from tropical to sub‐Antarctic climate zones, and have waters warming at rates twice the global average in the north and two to four times in the south. Here, we report the results of a multi‐taxon continent‐wide review describing observed and predicted species redistribution around the Australian coastline, and highlight critical gaps in knowledge impeding our understanding of, and response to, these considerable changes. Since range shifts were first reported in the region in 2003, 198 species from nine Phyla have been documented shifting their distribution, 87.3% of which are shifting poleward. However, there is little standardization of methods or metrics reported in observed or predicted shifts, and both are hindered by a lack of baseline data. Our results demonstrate the importance of historical data sets and underwater visual surveys, and also highlight that approximately one‐fifth of studies incorporated citizen science. These findings emphasize the important role the public has had, and can continue to play, in understanding the impact of climate change. Most documented shifts are of coastal fish species in sub‐tropical and temperate systems, while tropical systems in general were poorly explored. Moreover, most distributional changes are only described at the poleward boundary, with few studies considering changes at the warmer, equatorward range limit. Through identifying knowledge gaps and research limitations, this review highlights future opportunities for strategic research effort to improve the representation of Australian marine species and systems in climate‐impact research.
Warming world, changing ocean: mitigation and adaptation to support resilient marine systems
Publisher: Authorea, Inc.
Date: 05-10-2020
Equity of our future oceans: outcomes and practice in marine science research
Publisher: Authorea, Inc.
Date: 10-12-2020
Citizen science and marine conservation: a global review
Publisher: The Royal Society
Date: 02-11-2020
Abstract: Climate change, overfishing, marine pollution and other anthropogenic drivers threaten our global oceans. More effective efforts are urgently required to improve the capacity of marine conservation action worldwide, as highlighted by the United Nations Decade of Ocean Science for Sustainable Development 2021–2030. Marine citizen science presents a promising avenue to enhance engagement in marine conservation around the globe. Building on an expanding field of citizen science research and practice, we present a global overview of the current extent and potential of marine citizen science and its contribution to marine conservation. Employing an online global survey, we explore the geographical distribution, type and format of 74 marine citizen science projects. By assessing how the projects adhere to the Ten Principles of Citizen Science (as defined by the European Citizen Science Association), we investigate project development, identify challenges and outline future opportunities to contribute to marine science and conservation. Synthesizing the survey results and drawing on evidence from case studies of erse projects, we assess whether and how citizen science can lead to new scientific knowledge and enhanced environmental stewardship. Overall, we explore how marine citizen science can inform current understanding of marine bio ersity and support the development and implementation of marine conservation initiatives worldwide. This article is part of the theme issue ‘Integrative research perspectives on marine conservation’.
Effects of temperature on energetics and the growth pattern of benthic octopuses
Publisher: Inter-Research Science Center
Date: 13-01-2009
DOI: 10.3354/MEPS07736
Facing the wave of change: stakeholder perspectives on climate adaptation for Australian seafood supply chains
Publisher: Springer Science and Business Media LLC
Date: 12-08-2014
Introduction: local and traditional knowledge and data management in the Arctic
Publisher: Informa UK Limited
Date: 02-01-2014
Approaches to resolving cephalopod movement and migration patterns
Publisher: Springer Science and Business Media LLC
Date: 16-03-2007
Ecological-Fishery Forecasting of Squid Stock Dynamics under Climate Variability and Change: Review, Challenges, and Recommendations
Publisher: Informa UK Limited
Date: 18-01-2021
Decision support for the Ecosystem-Based Management of a Range-Extending Species in a Global Marine Hotspot Presents Effective Strategies and Challenges
Publisher: Springer Science and Business Media LLC
Date: 09-10-2020
Improving the biological realism of predator–prey size relationships in food web models alters ecosystem dynamics
Publisher: The Royal Society
Date: 10-2023
Modelling climate‐change‐induced nonlinear thresholds in cephalopod population dynamics
Publisher: Wiley
Date: 19-08-2010
Body Size, Growth and Life Span: Implications for the Polewards Range Shift of Octopus tetricus in South-Eastern Australia
Publisher: Public Library of Science (PLoS)
Date: 04-08-2014
Biodiversity redistribution under climate change: Impacts on ecosystems and human well-being.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 31-03-2017
Abstract: Distributions of Earth's species are changing at accelerating rates, increasingly driven by human-mediated climate change. Such changes are already altering the composition of ecological communities, but beyond conservation of natural systems, how and why does this matter? We review evidence that climate-driven species redistribution at regional to global scales affects ecosystem functioning, human well-being, and the dynamics of climate change itself. Production of natural resources required for food security, patterns of disease transmission, and processes of carbon sequestration are all altered by changes in species distribution. Consideration of these effects of bio ersity redistribution is critical yet lacking in most mitigation and adaptation strategies, including the United Nation's Sustainable Development Goals.
Small-scale spatial and temporal patterns of egg production by the temperate loliginid squid Sepioteuthis australis
Publisher: Springer Science and Business Media LLC
Date: 14-12-2002
Spawning aggregations of squid (Sepioteuthis australis) populations: a continuum of ‘microcohorts’
Publisher: Springer Science and Business Media LLC
Date: 28-12-2006
From global to regional and back again: common climate stressors of marine ecosystems relevant for adaptation across five ocean warming hotspots
Publisher: Wiley
Date: 21-03-2016
DOI: 10.1111/GCB.13247
Assessment of the likely sensitivity to climate change for the key marine species in the southern Benguela system
Publisher: National Inquiry Services Center (NISC)
Date: 03-07-2018
Anticipating arrival: Tackling the national challenges associated with the redistribution of biodiversity driven by climate change
Publisher: Wiley
Date: 17-07-2019
Abstract: The redistribution of species in response to climate change is expected to significantly challenge environmental management and conservation efforts around the globe. To date, we have had restricted understanding of the benefits and risks that species redistribution may pose to in idual countries, and a limited appreciation of the variability in current opportunities for developing effective monitoring approaches that build on existing national frameworks. To assess the present level of ecological, economic and societal risks and opportunities associated with new arrivals of species driven by changes in climatic conditions, we conducted a review of the available information on changes in animal species (both terrestrial and marine) distribution suspected to be linked to climate change in the United Kingdom over the past 10 years (2008–2018). We found evidence that at least 55 species have arrived in new locations in the country due to climate change in the past decade, with 22 of them suspected to impact positively or negatively the recipient ecosystems, or nearby human communities. Ten of these 55 species were identified using keywords and hashtags on social media. Synthesis and applications . Our work identifies pressing monitoring gaps relevant to the management of species on the move and discusses the potential for social media to help address current information needs. It also calls for more theoretical work to enable the quick identification of species likely to be problematic (or beneficial) and locations likely to experience significant ecological and societal impacts from bio ersity's redistribution under a changing climate.
Statistical solutions for error and bias in global citizen science datasets
Publisher: Elsevier BV
Date: 05-2014
Elemental fingerprints of southern calamary (Sepioteuthis australis) reveal local recruitment sources and allow assessment of the importance of closed areas
Publisher: Canadian Science Publishing
Date: 08-2011
DOI: 10.1139/F2011-059
Abstract: Movement of in iduals over a range of temporal and spatial scales is a critical process in determining the structure and size of populations. For most marine species, a substantial amount of movement that is responsible for connecting subpopulations occurs when in iduals are too small and numerous to be tagged using conventional methods. Using the elemental fingerprints of the statoliths of the squid Sepioteuthis australis and a robust machine learning classification technique, this study determined that newly hatched squid had elemental signatures that exhibited sufficient spatial variation to act as natural tags for natal origin and that elemental signatures can be used to allocate adult squid back to their natal site. Between 55% and 84% of the adult squid caught throughout the east and southeast of Tasmania, Australia, were classified back to an area that is closed to commercial fishing over much of the peak spawning period, and this was the only location with substantive evidence of natal recruitment. Although many studies have demonstrated the potential of this approach to discern connectivity between population units, few studies have successfully done so by then examining the trace element profiles of adults in addition to those of hatchlings as we have demonstrated with S. australis.
Stylet elemental signatures indicate population structure in a holobenthic octopus species, Octopus pallidus
Publisher: Inter-Research Science Center
Date: 19-11-2008
DOI: 10.3354/MEPS07722
Transgenerational marking of cephalopods with an enriched barium isotope: a promising tool for empirically estimating post-hatching movement and population connectivity
Publisher: Oxford University Press (OUP)
Date: 12-04-2010
Abstract: Pecl, G. T., Doubleday, Z. A., Danyushevsky, L., Gilbert, S., and Moltschaniwskyj, N. A. 2010. Transgenerational marking of cephalopods with an enriched barium isotope: a promising tool for empirically estimating post-hatching movement and population connectivity. – ICES Journal of Marine Science, 67: 1372–1380. Quantifying the movement of very small and young in iduals, determining sources of recruitment, and identifying the contribution of populations from different regions and periods to fished stocks is a major ecological challenge. Transgenerational isotope labelling (TRAIL), a technique which enables offspring to be marked on a mass scale, is applied for the first time to cephalopods, facilitating field studies quantifying population connectivity. Four species were used: Sepioteuthis australis, Euprymna tasmanica, Octopus pallidus, and Octopus maorum. Gravid females were injected with the enriched stable isotope 137Ba in different body tissues at several different doses. Isotopic ratios 138Ba:137Ba were then quantified using laser ablation inductively coupled plasma-mass spectrometry on the hard structures (statoliths and stylets) of offspring produced by the injected females. Day-old hatchlings from both squid species had statoliths with isotopic ratios significantly different from natural ratios and control animals, but variability in the ratios in hatchlings produced by different females was independent of dose or injection location. No differences were observed in the statoliths and stylets removed from hatchlings and juveniles, respectively, from the two octopus species, although isotopic shifts were evident in the hard structures of the adults injected. The use of TRAIL is a technique that offers considerable potential to advance the understanding of post-hatching dispersal and population connectivity in cephalopod populations.
Flexible reproductive strategies in tropical and temperate Sepioteuthis squids
Publisher: Springer Science and Business Media LLC
Date: 22-01-2001
Cultural and linguistic diversities are underappreciated pillars of biodiversity
Publisher: Proceedings of the National Academy of Sciences
Date: 07-10-2020
Are bigger calamary Sepioteuthis australis hatchlings more likely to survive? A study based on statolith dimensions
Publisher: Inter-Research Science Center
Date: 2003
DOI: 10.3354/MEPS261175
Mismatch of thermal optima between performance measures, life stages and species of spiny lobster
Publisher: Springer Science and Business Media LLC
Date: 04-12-2020
DOI: 10.1038/S41598-020-78052-4
Abstract: In an ocean warming hotspot off south-east Australia, many species have expanded their ranges polewards, including the eastern rock lobster, Sagmariasus verreauxi . This species is likely extending its range via larval advection into Tasmanian coastal waters, which are occupied by the more commercially important southern rock lobster, Jasus edwardsii . Here, thermal tolerances of these lobster species at two life stages were investigated to assess how they may respond to warming ocean temperatures. We found that the pattern, optimum and magnitude of thermal responses differed between performance measures, life stages and species. Sagmariasus verreauxi had a warmer optimal temperature for aerobic scope and escape speed than J. edwardsii . However, J. edwardsii had a higher magnitude of escape speed, indicating higher capacity for escape performance. There were also differences between life stages within species, with the larval stage having higher variation in optimal temperatures between measures than juveniles. This inconsistency in performance optima and magnitude indicates that single performance measures at single life stages are unlikely to accurately predict whole animal performance in terms of life-time survival and fitness. However, combined results of this study suggest that with continued ocean warming, S. verreauxi is likely to continue to extend its distribution polewards and increase in abundance in Tasmania.
Social Licence for Marine Conservation Science
Publisher: Frontiers Media SA
Date: 15-11-2018
The in situ relationships between season of hatching, growth and condition in the southern calamary, Sepioteuthis australis
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/MF03150
Abstract: This paper examines seasonal patterns in growth and condition of Sepioteuthis australis from temperate waters of Tasmania, Australia. Growth was described by a power function and was fast for a temperate species, with an average rate over the lifetime of 4–5% BW day–1. Sepioteuthis australis is an annual species, however spawning and hatching of juveniles appears to occur all year round. Analysis of in idual juvenile growth demonstrated a correlation between seasonally increasing temperatures and progressively faster growth. Season of hatching also had a clear effect on adult growth summer-hatched in iduals were larger at 170–190 days of age compared with winter-hatched in iduals (1002 ± 98 g and 632 ± 27 g respectively). The length–mantle weight relationship of adults was also dependent on season of hatching, with in iduals hatched in summer and spring having heavier mantles at a given length than those hatched in winter or autumn. Differential rates of growth or varying levels of condition, or perhaps both, may affect the survivorship of in iduals. Growth, condition and potentially lifespan of S. australis are dependent on environmental factors, with the dynamic nature of oceanographical conditions on the east coast of Tasmania resulting in a highly variable and fluctuating population structure.
Planning adaptation to climate change in fast-warming marine regions with seafood-dependent coastal communities
Publisher: Springer Science and Business Media LLC
Date: 16-02-2016
The role of hatchling size in generating the intrinsic size-at-age variability of cephalopods: extending the Forsythe Hypothesis
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/MF03153
Abstract: Cephalopods are characterised by extreme variability in size-at-age, with much of this variation attributed to effects of temperature and food. However, even siblings reared under identical conditions display a wide range of sizes after a period of growth. Hatchling size may represent a source of variation encompassed within adult size-at-age data (i) within a given cohort (variation in hatchling size suggests that a cohort’s growth trajectory will have a ‘staggered start’) and (ii) as hatchling size also varies as a function of incubation temperature this will vary across broader scales (i.e. between cohorts). Field-hatchling size data for Sepioteuthis australis were used in simple deterministic simulations, extending Forsythe’s (1993) temperature hypothesis, to investigate the influence of hatchling size on adult size-at-age variability. Within a cohort, our growth projections suggest that after 90 days, a large hatchling growing at a specific constant percentage daily growth rate (%BW day–1), would be approximately double the size of the small hatchling growing at exactly the same rate, irrespective of the growth rate used. When considering growth of different cohorts, decreases in hatchling size, as temperatures increase during a spring/summer spawning season, may be partially counteracting the ‘Forsythe-effect’ of increased growth rate at higher temperatures.
Understanding octopus growth: patterns, variability and physiology
Publisher: CSIRO Publishing
Date: 2004
DOI: 10.1071/MF03155
Abstract: Octopuses are generally characterised by rapid non-asymptotic growth, with high in idual variability. However, in situ octopus growth is not well understood. The lack of an ageing method has resulted in the majority of our understanding of octopus growth coming from laboratory studies. Despite not being applicable to cephalopods, Modal Progression Analysis (MPA) of length–frequency data is the most common method for examining in situ octopus growth. Recently, counting growth increments in beaks and vestigial shells, and quantifying lipofuscin in brain tissue, have all shown promise for the ageing octopus. Octopuses generally demonstrate two-phase growth in the laboratory, with physiological changes possibly associated with the switch between an initial rapid exponential phase and a slower power growth phase. Temperature and food ration and quality are key factors influencing the initial growth phase. Temperature, however, does not appear to affect the second phase in any consistent way, perhaps because maturity stage can influence the growth response. There may be basic differences in the mechanisms of octopus muscle growth compared with that of other cephalopods. Furthermore, higher relative maintenance energy expenditure, along with the low energy content of their prey, may account for the relatively slow growth of deep-sea octopuses compared to littoral species.
Redmap Australia: challenges and successes with a large-scale citizen science-based approach to ecological monitoring and community engagement on climate change
Publisher: Frontiers Media SA
Date: 28-06-2019
Let?s talk about climate change: Developing effective conversations between scientists and communities
Publisher: Elsevier BV
Date: 10-2020
Understanding interactions between plasticity, adaptation and range shifts in response to marine environmental change
Publisher: The Royal Society
Date: 28-01-2019
Abstract: Climate change is leading to shifts in species geographical distributions, but populations are also probably adapting to environmental change at different rates across their range. Owing to a lack of natural and empirical data on the influence of phenotypic adaptation on range shifts of marine species, we provide a general conceptual model for understanding population responses to climate change that incorporates plasticity and adaptation to environmental change in marine ecosystems. We use this conceptual model to help inform where within the geographical range each mechanism will probably operate most strongly and explore the supporting evidence in species. We then expand the discussion from a single-species perspective to community-level responses and use the conceptual model to visualize and guide research into the important yet poorly understood processes of plasticity and adaptation. This article is part of the theme issue ‘The role of plasticity in phenotypic adaptation to rapid environmental change’.
Distinguishing geographical range shifts from artefacts of detectability and sampling effort
Publisher: Wiley
Date: 10-2015
DOI: 10.1111/DDI.12263
Southernmost records of two Seriola species in an Australian ocean-warming hotspot
Publisher: Springer Science and Business Media LLC
Date: 10-2016
Assessing and reducing vulnerability to climate change: moving from theory to practical decision-support
Publisher: Elsevier BV
Date: 12-2016
Are fish outside their usual ranges early indicators of climate-driven range shifts?
Publisher: Wiley
Date: 23-02-2017
DOI: 10.1111/GCB.13635
Abstract: Shifts in species ranges are a global phenomenon, well known to occur in response to a changing climate. New species arriving in an area may become pest species, modify ecosystem structure, or represent challenges or opportunities for fisheries and recreation. Early detection of range shifts and prompt implementation of any appropriate management strategies is therefore crucial. This study investigates whether 'first sightings' of marine species outside their normal ranges could provide an early warning of impending climate-driven range shifts. We examine the relationships between first sightings and marine regions defined by patterns of local climate velocities (calculated on a 50-year timescale), while also considering the distribution of observational effort (i.e. number of s ling days recorded with biological observations in global databases). The marine trajectory regions include climate 'source' regions (areas lacking connections to warmer areas), 'corridor' regions (areas where moving isotherms converge), and 'sink' regions (areas where isotherms locally disappear). Additionally, we investigate the latitudinal band in which first sightings were recorded, and species' thermal affiliations. We found that first sightings are more likely to occur in climate sink and ' ergent' regions (areas where many rapid and erging climate trajectories pass through) indicating a role of temperature in driving changes in marine species distributions. The majority of our fish first sightings appear to be tropical and subtropical species moving towards high latitudes, as would be expected in climate warming. Our results indicate that first sightings are likely related to longer-term climatic processes, and therefore have potential use to indicate likely climate-driven range shifts. The development of an approach to detect impending range shifts at an early stage will allow resource managers and researchers to better manage opportunities resulting from range-shifting species before they potentially colonize.
Determining the age and growth of wild octopus using stylet increment analysis
Publisher: Inter-Research Science Center
Date: 11-09-2008
DOI: 10.3354/MEPS07558
Use of acoustic telemetry for spatial management of southern calamary Sepioteuthis australis, a highly mobile inshore squid species
Publisher: Inter-Research Science Center
Date: 20-12-2006
DOI: 10.3354/MEPS328001
Reproductive status of Octopus pallidus, and its relationship to age and size
Publisher: Springer Science and Business Media LLC
Date: 05-08-2008
Inter-annual plasticity of squid life history and population structure: ecological and management implications
Publisher: Springer Science and Business Media LLC
Date: 28-05-2004
Deep impact of fisheries
Publisher: Springer Science and Business Media LLC
Date: 20-08-2018
Rapid assessment of fisheries species sensitivity to climate change
Publisher: Springer Science and Business Media LLC
Date: 13-11-2014
Recreational fishing in a time of rapid ocean change
Publisher: Elsevier BV
Date: 02-2017
Early life-history processes in benthic octopus: Relationships between temperature, feeding, food conversion, and growth in juvenile Octopus pallidus
Publisher: Elsevier BV
Date: 2008
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