Climate change effects in the Bay of Bengal Large Marine Ecosystem

Vivekanandan, E; Hermes, Rudolf; O’Brien, Chris

doi:10.1016/j.envdev.2015.09.005

Cited by 41 publications

(22 citation statements)

References 12 publications

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“…Model projections suggested that regional stocks could recover from climate-driven fluctuations, but only if increased fish meal demand and sub-optimal management did not occur simultaneously. As demand for fish meal and oil are increasing (Tacon & Metian 2015) and suboptimal management of fisheries worldwide is a continuing challenge (World Bank 2015, Vivekanandan et al 2016, fisheries decline cannot be ruled out.…”

Section: Finfish and Invertebrate Dietsmentioning

confidence: 99%

Climate change and aquaculture: considering biological response and resources

Reid¹,

Gurney-Smith²,

Dj³

et al. 2019

Aquacult. Environ. Interact.

103

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The heavy reliance of most global aquaculture on the ambient environment suggests inherent vulnerability to climate change effects. This review explores the potential effects of climate change stressors on aquaculture biology and resources needed to support decision-making for vulnerability assessment, planned adaptation, and strategic research development. Climate change-mediated physiochemical outcomes important to aquaculture include extreme weather, precipitation and surge-based flooding, water stress, ocean acidification, sea-level rise, saltwater intrusion, and changes to temperature, salinity, and dissolved oxygen. Culture practices, environment, and region affect stressor exposure, and biological response between species or populations are not universal. Response to a climate change stressor will be a function of where changes occur relative to optimal ranges and tolerance limits of an organism's life stage and physiological processes; the average magnitude of the stressor over the production cycle; stressor rate of change; variation, frequency, duration, and magnitude of extremes; epigenetic expression, genetic strain, and variation within and between populations; health and nutrition; and simultaneous stressor occurrence. The effects of simultaneous stressors will frequently interact, but may not be fully additive or synergistic. Disease is a major aquaculture limiter, and climate change is expected to further affect plant and animal health through the host and/or infectious agents. Climate change may introduce further complexity to the aquaculture−wild fishery relationship, with over two-thirds of animal aquaculture production dependent on external feed inputs. Higher production costs could be an economic outcome of climate change for many aquaculture sectors. Some aquaculture practices may inadvertently reduce resiliency to climate change, such as a reduction of coastal vegetation, coastal ground-water pumping, and reduction of population variability in pursuit of consistent production traits. Information from the largest aquaculture producers such as China and the top 3 global culture species is still sparse in the literature. This potentially limits thorough understanding of climate change effects on some regional aquaculture sectors.

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Section: Finfish and Invertebrate Dietsmentioning

confidence: 99%

Climate change and aquaculture: considering biological response and resources

Reid¹,

Gurney-Smith²,

Dj³

et al. 2019

Aquacult. Environ. Interact.

103

View full text Add to dashboard Cite

show abstract

“…The Indian Ocean, however, is warming at a much faster rate than other oceans; waters around India's coasts have warmed by about 0.14-0.16°C/decade over 1958(Gnanaseelan, Roxy, and Deshpande 2017. According to a specialist on marine species in India, there is a 'positive correlation' between rising sea surface temperatures and the extension of these species' ranges northward: 'The warmer tongue (27°C-28.5°C) of the surface waters expanded north of 14°N, enabling the oil sardine and Indian mackerel to extend their distributional boundary' (Vivekanandan, Hermes, and O'Brien 2016).…”

Section: Migration Of Speciesmentioning

confidence: 99%

Impacts of Global Warming in India

Adve¹

2019

India in a Warming World

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This chapter uses ethnographic and documentary material to provide glimpses of how people experience, talk about, and negotiate climate change and increased variability in different parts of India. Using this approach, it aims to provide a qualitative narrative of some key, current impacts of global warming from below. What people say, combined with evidence from the scientific literature, increasingly indicates that its effects are already severely impacting ecosystems and lives, particularly the underclasses and others least responsible. Four key impacts are presented here: sea-level rise in the Sunderbans; shifts in the location of other species; effects across the Himalayan range; and the Uttarakhand disaster of 2013 in which several thousand people were killed. It is deeply concerning that these, and numerous other impacts currently experienced in different parts of India, are observed at 0.8°C of average warming. Much greater urgency in dealing with global warming is clearly warranted.

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“…These multiple stressors are likely to have serious effects, in particular on the Bay of Bengal ecosystem which is high in productivity and support significant fisheries resources. Thus the productivity, habitats and biological process of this large ecosystem have been affected due to unexpected fluctuations of climate change variables (Jagtap and Nagle, 2007;Vivekanandan et al, 2009a;Hoegh-Guldberg and Bruno, 2010;Vivekanandan et al, 2016;Da Silva et al, 2017).…”

Section: Climate Change and Marine Resources In Bangladeshmentioning

confidence: 99%

“…Distribution (Poloczanska et al, 2013), composition of communities (Perry et al, 2005), physiology (Somero, 2010) of different fish species, increase in frequency and intensity of coral bleaching (Vivekanandan et al, 2016), prevalence, transmission and pathogenicity of parasites and diseases (Britton et al, 2011;Macnab and Barber, 2012), etc. have become evident due to alterations of physicochemical conditions of any ecosystem like the Bay of Bengal.…”

Section: Climate Change and Marine Resources In Bangladeshmentioning

confidence: 99%