Climate change cascades: Shifts in oceanography, species' ranges and subtidal marine community dynamics in eastern Tasmania

Johnson, Craig R.; Banks, Sam C.; Barrett, Neville S.; Cazassus, Fabienne; Dunstan, Piers K.; Edgar, Graham J.; Frusher, SD; Gardner, Caleb; Haddon, Malcolm; Helidoniotis, Fay; Hill, K. L.; Holbrook, Neil J.; Hosie, Graham W.; Ling, Scott D.; Melbourne-Thomas, Jess; Miller, Karen J.; Pecl, Gretta T.; Richardson, Anthony J.; Ridgway, K. R.; Rintoul, Stephen R.; Ritz, David; Ross, D. J.; Sanderson, J. Craig; Shepherd, S.A.; Slotwinski, Anita; Swadling, Kerrie M.; Taw, Nyan

doi:10.1016/j.jembe.2011.02.032

Cited by 539 publications

(466 citation statements)

References 78 publications

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“…whiting Siphonognathus attenuates and luderick Girella tricuspidata) and new records (e.g. rock cale Aplodactylus lophodon); Pitt et al (2010), who document range shifts in 16 species of Tasmanian invertebrates; and Johnson et al (2011), who show cascading effects of ecological change in benthic (rocky reef) and pelagic systems. Community monitoring in Tasmania has recorded marine species that have extended their ranges, including eastern blue groper (Achoerodus viridis), eastern rock lobster (J. verreauxi), mahi mahi (Coryphaena hippurus) and grey morwong (Nemadactylus douglasii).…”

Section: Observed and Anticipated Impacts Of Climate Changementioning

confidence: 99%

“…Such climate change impacts are already being observed in Australia with changes to fish habitats and distribution (e.g. Hallegraeff 2010;Last et al 2011;Johnson et al 2011;Pearce et al 2011;Poloczanska et al 2009Poloczanska et al , 2012, and ability to operate in suitable fishing grounds (Tobin et al 2010). The magnitude of future impacts, and whether marine ecosystems and fisheries can adapt, depends on the rate of change, the response of the marine system to climate change, and other drivers; social (e.g.…”

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confidence: 93%

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Climate change impacts and adaptation of commercial marine fisheries in Australia: a review of the science

Holbrook

Johnson

2014

Climatic Change

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Commercial marine fishing contributes significantly to the Australian economy, and has great importance for coastal communities. However, climate change presents significant challenges for Australia's fishing industries, now and into the future. With greater use of targeted information, the fishing industry will be better placed to minimise the negative impacts and take advantage of opportunities associated with the effects of climate change. The future of the fishing industry-specifically wild capture fisheries-will depend on its ability and capacity to apply appropriate adaptation strategies for its viability and sustainability in the long-term. Knowledge regarding expected long-term changes in species distributions, improved weather and seasonal climate forecasts and their influence on target species, and better understanding of species tolerances, can inform adaptation responses. This paper provides a review of recent advances in research addressing Australia's priorities in relation to commercial marine fisheries' responses to current and anticipated future climate change impacts, and considers barriers and adaptation options for fisheries management over the nearterm planning horizon of 5-7 years.

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Section: Observed and Anticipated Impacts Of Climate Changementioning

confidence: 99%

mentioning

confidence: 93%

Climate change impacts and adaptation of commercial marine fisheries in Australia: a review of the science

Holbrook

Johnson

2014

Climatic Change

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“…Many lines of evidence point to the intensification of the East Australian Current (EAC) as the main cause of warming (Hill et al 2008; Thompson et al 2008;Ridgway and Hill 2009;Johnson et al 2011). The EAC is a highly energetic and variable boundary current that is dominated by mesoscale eddies south of its separation from the east Australian mainland at approximately 32.5°S (Ridgway and Hill 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Tasmania supplies approximately 30 % of the global market for wild caught Abalone each year (ABARE 2010) and approximately a quarter of this catch is consistently harvested from southern Tasmanian reefs, most of which is sourced from the Actaeon Islands (Tarbath and Gardner 2011). It is predicted that increasing temperature, resulting from a long-term intensification of the EAC, will significantly reduce the size of abalone at maturity (Johnson et al 2011). Hence longterm warming in Tasmanian near shore reefs, as demonstrated by the MINRS, has the potential to cause a steady reduction in Abalone yields.…”

Section: Introductionmentioning

confidence: 99%

New evidence links changing shelf phytoplankton communities to boundary currents in southeast Tasmania

Buchanan

Swadling

Eriksen

et al. 2013

Rev Fish Biol Fisheries

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Southern Tasmanian shelf waters are host to the seasonal interplay of Australia's two poleward boundary currents; the East Australian Current (EAC) and the Leeuwin Current (LC). While the behaviour and properties of the LC remain underexplored, strong research focus has allowed insight into how an intensifying EAC has created greater subtropical influence, leading to changes in the physical and biological oceanography of the region. In this cool temperate setting seven species of dinoflagellates, all in the genus Ceratium, which are more typically associated with warm waters of eastern Australia, were observed. This coincided with the seasonal increase in the EAC's southward penetration beginning in October. Despite the seasonal peak in EAC activity, temperature-salinity plots, nutrient, chlorophyll a and phytoplankton concentrations all indicate the presence of subantarctic waters on the shelf and in coastal waters in summer. Our results are consistent with the description of the EAC as an erratic, eddy-driven current; this itself allowing the periodic influx of subantarctic waters across the shelf. In winter, temperature-salinity plots and nutrient concentrations indicate that the LC was present in southern shelf waters. In addition to its high nitrate signature, the LC displayed low silicate properties in southern Tasmania. Chlorophyll a concentrations revealed a distinct spring bloom event and an extended, productive summer, typical of temperate and subantarctic systems, respectively. This suggests the region is a transitional state between classic seasonal primary production cycles for temperate and subantarctic waters. This paper links changes in southern Tasmanian microphytoplankton communities to shelf ventilation by the EAC, the LC and subantarctic waters, and provides new insight into the oceanography of the region. Consequently, this study provides an awareness of potential phytoplankton perturbations that may be applied to other coastal cool temperate marine environments.

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“…However, C. rodgersii converts productive kelp beds into urchin barrens, which negatively impacts the commercially important abalone and rock lobster fisheries (Johnson et al 2011), and therefore threatens the livelihood of those fishers.…”

Section: Introductionmentioning

confidence: 99%

Ecological and socioeconomic implications of a northern range expansion of black sea bass, Centropristis striata

McMahan¹

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Climate change cascades: Shifts in oceanography, species' ranges and subtidal marine community dynamics in eastern Tasmania

Cited by 539 publications

References 78 publications

Climate change impacts and adaptation of commercial marine fisheries in Australia: a review of the science

Climate change impacts and adaptation of commercial marine fisheries in Australia: a review of the science

New evidence links changing shelf phytoplankton communities to boundary currents in southeast Tasmania

Ecological and socioeconomic implications of a northern range expansion of black sea bass, Centropristis striata

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