Upper thermal limits and warming safety margins of coastal marine species – Indicator baseline for future reference

Vinagre, Catarina; Cereja, Rui; Abreu-Afonso, Francisca; Flores, Augusto A. V.; Mendonça, Vanessa

doi:10.1016/j.ecolind.2019.03.030

Cited by 67 publications

(35 citation statements)

References 28 publications

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“…This study provided a relatively comprehensive understanding of the desiccation and oxidative stress responses of M. japonicus in terms of physiology, innate immunity, cell apoptosis, and DNA methylation levels, and facilitated further investigation into the molecular mechanisms of shrimp under oxidative stress. In the coming centuries, aquatic animals will face more severe challenges, including ocean warming and the expansion of the death zone (Keeling et al, 2010;Altieri and Gedan, 2015;Vinagre et al, 2019). This research can serve as a case study for future research on hypoxia adaptation and the antioxidant mechanisms of other marine groups.…”

Section: Resultsmentioning

confidence: 97%

Air Exposure Affects Physiological Responses, Innate Immunity, Apoptosis and DNA Methylation of Kuruma Shrimp, Marsupenaeus japonicus

Wang

et al. 2020

Front. Physiol.

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Air exposure stress is a common phenomenon for commercial crustacean species in aquaculture and during waterless transportation. However, the antioxidant responses to air exposure discussed in previous studies may be insufficient to present the complexities involved in this process. The comprehensive immune responses, especially considering the immune genes, cell apoptosis, and epigenetic changes, are still unknown. Accordingly, we investigated the multifaceted responses of Marsupenaeus japonicus to air exposure. The results showed that the expression profiles of the apoptosis genes (e.g., IAP, TXNIP, caspase, and caspase-3) and the hypoxiarelated genes (e.g., hsp70, hif-1α, and HcY) were all dramatically induced in the hepatopancreas and gills of M. japonicus. Heart rates, T-AOC (total antioxidant capacity) and lactate contents showed time-dependent changes upon air exposure. Air exposure significantly induced apoptosis in hepatopancreas and gills. Compared with the control group, the apoptosis index (AI) of the 12.5 h experimental group increased significantly (p < 0.05) in the hepatopancreas and gills. Most individuals in the experimental group (EG, 12.5 h) had lower methylation ratios than the control group (CG). Air exposure markedly reduced the full-methylation and total-methylation ratios (31.39% for the CG and 26.46% for the EG). This study provided a comprehensive understanding of the antioxidant responses of M. japonicus considering its physiology, innate immunity, apoptosis, and DNA methylation levels, and provided theoretical guidance for waterless transportation.

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Section: Resultsmentioning

confidence: 97%

Air Exposure Affects Physiological Responses, Innate Immunity, Apoptosis and DNA Methylation of Kuruma Shrimp, Marsupenaeus japonicus

Wang

et al. 2020

Front. Physiol.

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“…While using a shifting baseline period can be beneficial for analysing the underlying variability in MHW occurrence over time and its dynamics, ecosystem impacts from climate change are likely to be best understood if we consider changes against a fixed baseline. A baseline that shifts in line with a species' adaptive capabilities may be suitable in some cases as the impact of MHWs on marine species often critically depends on the rate of change in absolute temperature, above the species' thermal limits 106 . It may be that some species have no capacity to adapt on short timescales given the rapidity of temperature change, while other species can adapt either fully or perhaps partially.…”

Section: [H2] Predictability Timescalesmentioning

confidence: 99%

Keeping pace with marine heatwaves

Holbrook

Gupta

Oliver

et al. 2020

Nat Rev Earth Environ

269

182

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Marine heatwaves (MHWs) are prolonged extreme oceanic warm water events. They can have devastating impacts on marine ecosystems -for example, causing mass coral bleaching and substantial declines in kelp forests and seagrass meadows -with implications for the provision of ecological goods and services. Effective adaptation and mitigation efforts by marine managers can benefit from improved MHW predictions, which at present are inadequate. In this Perspective, we explore MHW predictability on shortterm, interannual to decadal, and centennial timescales, focusing on the physical processes that offer prediction. While there may be potential predictability of MHWs days to years in advance, accuracy will vary dramatically depending on the regions and drivers. Skilful MHW prediction has the potential to provide critical information and guidance for marine conservation, fisheries and aquaculture management. However, to develop effective prediction systems, better understanding is needed of the physical drivers, subsurface MHWs, and predictability limits. [H1] IntroductionProlonged extreme ocean warming events -also known as marine heatwaves (MHWs) -can severely impact marine ecosystems and the services they provide 1-6 . Yet despite their significance, dedicated and coordinated research only became prominent following the extreme event off Western Australia in 2011 7,8 . Indeed, it was during this event that the term 'marine heatwave' was first used to characterise an extensive, persistent and extreme ocean temperature event 9 (Box 1), spurring a new wave of research into their physical processes and corresponding impacts. Since 2011, MHWs have been observed and analysed both retrospectively and contemporaneously, and are now recognised to occur over various spatio-temporal scales. For example, given the ocean's heat capacity and dynamical scales, MHW events can persist for weeks to years [10][11][12][13][14][15][16] . They further vary in spatial extent and depth depending on the processes that cause and maintain them, as well as the geometry of the regions in which they occur. For instance, MHWs can be locally confined to individual bays 17 , around small islands or along short sections of coastline, or be broadly distributed over regional seas 10,18 , ocean basins 15,19 , or even spanning multiple oceans 20,21 (for a map of major MHW events, see Fig. 1). As well as the physical drivers, the ecological impacts of MHWs have also been studied in considerable depth. The effects include biodiversity loss and changes in species behaviour or performance 3,7 , loss of genetic diversity and adaptive capacity 22 , economic impacts from changes in fishery catch rates 1,[23][24][25] , and mortality or altered performance of farmed aquaculture species 13 .The impacts of MHWs are particularly evident on coral reefs (promoting widespread bleaching, including pan-tropical events 26 ), kelp forests (driving significant loss of kelp forest habitats off the coast of Western Australia, New Zealand, Mexico and the North Atlantic 7,27-30 ...

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“…Moreover, the current repertoire of species, habitats and intervention possibilities considered is limited. Nonetheless, the literature base necessary to support the development of adaptation measures exists and is building for many species and habitats; for example, we have a good idea of the pace [70] and spatio-temporal expression [71] of climate change, which species are most vulnerable to ocean acidification and warming [72,73], what engineering materials [74] royalsocietypublishing.org/journal/rstb Phil. Trans.…”

Section: Harnessing the Benthosmentioning

confidence: 99%

Benthic-based contributions to climate change mitigation and adaptation

Solan

Bennett

Mumby

et al. 2020

Phil. Trans. R. Soc. B

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Innovative solutions to improve the condition and resilience of ecosystems are needed to address societal challenges and pave the way towards a climate-resilient future. Nature-based solutions offer the potential to protect, sustainably manage and restore natural or modified ecosystems while providing multiple other benefits for health, the economy, society and the environment. However, the implementation of nature-based solutions stems from a discourse that is almost exclusively derived from a terrestrial and urban context and assumes that risk reduction is resolved locally. We argue that this position ignores the importance of complex ecological interactions across a range of temporal and spatial scales and misses the substantive contribution from marine ecosystems, which are notably absent from most climate mitigation and adaptation strategies that extend beyond coastal disaster management. Here, we consider the potential of sediment-dwelling fauna and flora to inform and support nature-based solutions, and how the ecology of benthic environments can enhance adaptation plans. We illustrate our thesis with examples of practice that are generating, or have the potential to deliver, transformative change and discuss where further innovation might be applied. Finally, we take a reflective look at the realized and potential capacity of benthic-based solutions to contribute to adaptation plans and offer our perspectives on the suitability and shortcomings of past achievements and the prospective rewards from sensible prioritization of future research. This article is part of the theme issue ‘Climate change and ecosystems: threats, opportunities and solutions'.

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Upper thermal limits and warming safety margins of coastal marine species – Indicator baseline for future reference

Cited by 67 publications

References 28 publications

Air Exposure Affects Physiological Responses, Innate Immunity, Apoptosis and DNA Methylation of Kuruma Shrimp, Marsupenaeus japonicus

Air Exposure Affects Physiological Responses, Innate Immunity, Apoptosis and DNA Methylation of Kuruma Shrimp, Marsupenaeus japonicus

Keeping pace with marine heatwaves

Benthic-based contributions to climate change mitigation and adaptation

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