Management adaptation of invertebrate fisheries to an extreme marine heat wave event at a global warming hot spot.
Nick Caputi,Mervi Kangas,Ainslie Denham,Ming Feng,Alan Pearce,Yasha Hetzel,Arani Chandrapavan +6 more
TLDR
This study illustrates that fisheries management under extreme temperature events requires an early identification of temperature hot spots, early detection of abundance changes, and flexible harvest strategies which allow a quick response to minimize the effect of heavy fishing on poor recruitment to enable protection of the spawning stock.Abstract:
An extreme marine heat wave which affected 2000 km of the midwest coast of Australia occurred in the 2010/11 austral summer, with sea-surface temperature (SST) anomalies of 2-5°C above normal climatology. The heat wave was influenced by a strong Leeuwin Current during an extreme La Nina event at a global warming hot spot in the Indian Ocean. This event had a significant effect on the marine ecosystem with changes to seagrass/algae and coral habitats, as well as fish kills and southern extension of the range of some tropical species. The effect has been exacerbated by above-average SST in the following two summers, 2011/12 and 2012/13. This study examined the major impact the event had on invertebrate fisheries and the management adaption applied. A 99% mortality of Roei abalone (Haliotis roei) and major reductions in recruitment of scallops (Amusium balloti), king (Penaeus latisulcatus) and tiger (P. esculentus) prawns, and blue swimmer crabs were detected with management adapting with effort reductions or spatial/temporal closures to protect the spawning stock and restocking being evaluated. This study illustrates that fisheries management under extreme temperature events requires an early identification of temperature hot spots, early detection of abundance changes (preferably using pre-recruit surveys), and flexible harvest strategies which allow a quick response to minimize the effect of heavy fishing on poor recruitment to enable protection of the spawning stock. This has required researchers, managers, and industry to adapt to fish stocks affected by an extreme environmental event that may become more frequent due to climate change.read more
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Longer and more frequent marine heatwaves over the past century
Eric C. J. Oliver,Eric C. J. Oliver,Markus G. Donat,Michael T. Burrows,Pippa J. Moore,Dan A. Smale,Dan A. Smale,Lisa V. Alexander,Jessica A. Benthuysen,Ming Feng,Alex Sen Gupta,Alistair J. Hobday,Neil J. Holbrook,Sarah E. Perkins-Kirkpatrick,Hillary A. Scannell,Hillary A. Scannell,Sandra C. Straub,Thomas Wernberg +17 more
TL;DR: Using a range of ocean temperature data including global records of daily satellite observations, daily in situ measurements and gridded monthly in situ-based data sets, this work identifies significant increases in marine heatwaves over the past century.
Journal ArticleDOI
Marine heatwaves under global warming
TL;DR: Satellite observations and Earth system model simulations reveal that marine heatwaves have increased in recent decades and will increase further in terms of frequency, intensity, duration and spatial extent, suggesting that MHWs will become very frequent and extreme under global warming.
Journal ArticleDOI
The unprecedented 2015/16 Tasman Sea marine heatwave.
Eric C. J. Oliver,Eric C. J. Oliver,Jessica A. Benthuysen,Nathaniel L. Bindoff,Nathaniel L. Bindoff,Nathaniel L. Bindoff,Alistair J. Hobday,Neil J. Holbrook,Neil J. Holbrook,Craig Mundy,Sarah E. Perkins-Kirkpatrick +10 more
TL;DR: The Tasman Sea off southeast Australia exhibited its longest and most intense marine heatwave ever recorded in 2015/16, with observed characteristics, physical drivers, ecological impacts and the role of climate change reported.
Journal ArticleDOI
Biological responses to the press and pulse of climate trends and extreme events
Rebecca M. B. Harris,Rebecca M. B. Harris,Linda J. Beaumont,Tessa Vance,Carly R. Tozer,Carly R. Tozer,Tomas A. Remenyi,Sarah E. Perkins-Kirkpatrick,Patrick J. Mitchell,Adrienne B. Nicotra,Shayne McGregor,Shayne McGregor,Nigel R. Andrew,Mike Letnic,Michael R. Kearney,Thomas Wernberg,Lindsay B. Hutley,Lynda E. Chambers,Michael-Shawn Fletcher,Marie R. Keatley,Clifford Woodward,Clifford Woodward,Grant J. Williamson,Norman C. Duke,David M. J. S. Bowman +24 more
TL;DR: The interaction of gradual climate trends and extreme weather events since the turn of the century has triggered complex and, in some cases, catastrophic ecological responses around the world as discussed by the authors, using Australian examples within a press-pulse framework.
Journal ArticleDOI
Categorizing and naming marine heatwaves
Alistair J. Hobday,Eric C. J. Oliver,Eric C. J. Oliver,Alex Sen Gupta,Jessica A. Benthuysen,Michael T. Burrows,Markus G. Donat,Neil J. Holbrook,Pippa J. Moore,Mads S. Thomsen,Mads S. Thomsen,Thomas Wernberg,Dan A. Smale +12 more
TL;DR: In this paper, a detailed categorization scheme for high impact marine heatwaves (MHWs) was proposed, combining elements from schemes that describe atmospheric heatwaves and hurricanes. Category I, II, III, and IV MHWs are defined based on the degree to which temperatures exceed the local climatology and illustrated for 10 MHWs.
References
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Journal ArticleDOI
A hierarchical approach to defining marine heatwaves
Alistair J. Hobday,Lisa V. Alexander,Sarah E. Perkins,Dan A. Smale,Dan A. Smale,Sandra C. Straub,Eric C. J. Oliver,Eric C. J. Oliver,Jessica A. Benthuysen,Michael T. Burrows,Markus G. Donat,Ming Feng,Neil J. Holbrook,Neil J. Holbrook,Pippa J. Moore,Hillary A. Scannell,Hillary A. Scannell,Alex Sen Gupta,Thomas Wernberg +18 more
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Journal ArticleDOI
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Journal ArticleDOI
Mass mortality in Northwestern Mediterranean rocky benthic communities: effects of the 2003 heat wave
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TL;DR: In this paper, mass mortality of at least 25 rocky benthic macro-invertebrate species (mainly gorgonians and sponges) was observed in the entire Northwestern (NW) Mediterranean region, affecting several thousand kilometers of coastline.
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