Oil exposure in a warmer Arctic: potential impacts on key zooplankton species

Hjorth, Morten; Nielsen, Torkel Gissel

doi:10.1007/s00227-011-1653-3

Cited by 53 publications

(46 citation statements)

References 33 publications

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“…The second hypothesis is more likely, given that presence and abundance of C. glacialis in the natural environment is strongly linked to temperatures < 7°C (Carstensen et al 2012), while the copepods become torpid and motionless >15°C (Hirche 1987). Accordingly, physiological data from the present experiment showed decreased grazing and elevated mortality at 15°C, supporting earlier studies at the same location showing C. glacialis sensitivity to temperatures > 7°C (Hjorth & Nielsen 2011, Kjellerup et al 2012.…”

Section: Lack Of Thermal Stress Response In C Glacialissupporting

confidence: 92%

“…This is supported by physiological experiments on C. finmarchicus from the same area during the spring bloom showing an increase in grazing and egg production from 0.5 to 10°C (Hjorth & Nielsen 2011, Kjellerup et al 2012) and the fact that C. finmarchicus has an annual temperature optimum of approximately 5°C (Wilson et al 2015). Nevertheless, in the Norwegian Sea, 10°C is regarded as optimal for C. finmarchicus (Harris et al 2000), while populations from the North Sea show the highest population growth rate at 12°C (Møller et al 2012).…”

Section: Transcriptome-wide Response To Thermal Stress In C Finmarchsupporting

confidence: 53%

“…The selected copepod density was slightly lower than in previous experiments (e.g. Hjorth & Nielsen 2011); nevertheless, even at 20 times higher density, the oxygen saturation does not fall lower than 80% after 21 h (Hildebrandt et al 2014). Acclimated copepods were transferred to 600 ml Nunc bottles containing filtered seawater with ~5 µg chl a l −1 of T. weissflogii and incubated at 0, 5, 10 and 15°C with 8 replicates (bottles) per temperature in each species (Fig.…”

Section: Sampling and Experimental Set-upmentioning

confidence: 93%

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Contrasting transcriptome response to thermal stress in two key zooplankton species, Calanus finmarchicus and C. glacialis

Smolina¹,

Kollias²,

Møller³

et al. 2015

Mar. Ecol. Prog. Ser.

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Climate change has already led to the range expansion of warm-water plankton assemblages in the northeast Atlantic and the corresponding range contraction of colder-water species. The temperate copepod Calanus finmarchicus is predicted to shift farther northward into polar waters traditionally dominated by the arctic copepod C. glacialis. To identify temperaturemediated changes in gene expression that may be critical for the thermal acclimation and resilience of the 2 Calanus spp., we conducted a whole transcriptome profiling using RNA-seq on an Ion Torrent platform. Transcriptome responses of C. finmarchicus and C. glacialis from Disko Bay, west Greenland, were investigated under realistic thermal stresses (at + 5, +10 and +15°C) for 4 h and 6 d. C. finmarchicus showed a strong response to temperature and duration of stress, involving up-regulation of genes related to protein folding, transcription, translation and metabolism. In sharp contrast, C. glacialis displayed only low-magnitude changes in gene expression in response to temperature and duration of stress. Differences in the thermal responses of the 2 species, particularly the lack of thermal stress response in C. glacialis, are in line with laboratory and field observations and suggest a vulnerability of C. glacialis to climate change.

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Section: Lack Of Thermal Stress Response In C Glacialissupporting

confidence: 92%

Section: Transcriptome-wide Response To Thermal Stress In C Finmarchsupporting

confidence: 53%

Section: Sampling and Experimental Set-upmentioning

confidence: 93%

See 1 more Smart Citation

Contrasting transcriptome response to thermal stress in two key zooplankton species, Calanus finmarchicus and C. glacialis

Smolina¹,

Kollias²,

Møller³

et al. 2015

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

“…The study showed that this population had a strong transcriptomic response to an increase in temperature (from 0°C to 15°C) involving up-regulation of genes related to protein folding, transcription, translation and metabolism, and suggested 5°C as an optimum temperature. Physiological experiments on C. finmarchicus from the same area support this suggestion (Hjorth and Nielsen, 2011;Kjellerup et al, 2012), while studies from warmer areas suggest 10-12°C as an optimal temperature for C. finmarchicus (Harris et al, 2000;Møller et al, 2012). Given these observations and the fact that the distribution of C. finmarchicus is characterised by geographically varying ranges of temperature, salinity and light conditions (Melle et al, 2014), it is likely that response to environmental factors in C. finmarchicus is population-specific.…”

Section: Introductionmentioning

confidence: 92%

Reduced up-regulation of gene expression in response to elevated temperatures in the mid-Atlantic population of Calanus finmarchicus

Smolina

Harmer

Lindeque

et al. 2016

Journal of Experimental Marine Biology and Ecology

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“…Chapman [98] concludes that polar fish and their prey are likely not more sensitive to contaminants than in temperate regions. Literature studies [45,99,100], however, have shown that polar (Arctic and Antarctic) marine invertebrates respond slower to some contaminants than those temperate specifies, including metals, polycyclic aromatic hydrocarbons (PAHs), and so on.…”

Section: Human Toxicity and Ecotoxicitymentioning

confidence: 99%

Life Cycle Impact Assessment in the Arctic: Challenges and Research Needs

Pettersen

Song

2017

Sustainability

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Life cycle assessment (LCA) is increasingly used for environmental assessment of products and production processes to support environmental decision-making both worldwide and in the Arctic. However, there are several weaknesses in the impact assessment methodology in LCA, e.g., related to uncertainties of impact assessment results, absence of spatial differentiation in characterization modeling, and gaps in the coverage of impact pathways of different "archetypal" environments. Searching for a new resource base and areas for operation, marine and marine-based industries are continuously moving north, which underlines the need for better life cycle impact assessment in the Arctic, particularly to aid in industrial environmental management systems and stakeholder communications. This paper aims to investigate gaps and challenges in the application of the currently available impact assessment methods in the Arctic context. A simplified Arctic mining LCA case study was carried out to demonstrate the relevance of Arctic emissions at the midpoint and endpoint levels, as well as possible influences of the Arctic context on the impact assessment results. Results of this study showed that significant research gaps remain in Arctic-dependent life cycle impact assessment, particularly on: (i) the possible influences of the Arctic-specific features on characterization factors for impact assessment (such as seasonality, cold climate, precipitation, and marine dependence); and (ii) the coverage of impact pathways, especially on the under-addressed marine impacts and marine/near-shore dispersion processes. Addressing those identified research gaps and demand for future Arctic life cycle impact assessment could increase the credibility of LCA as an environmental decision-making support tool for Arctic industries and better support sustainable Arctic development.

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Oil exposure in a warmer Arctic: potential impacts on key zooplankton species

Cited by 53 publications

References 33 publications

Contrasting transcriptome response to thermal stress in two key zooplankton species, Calanus finmarchicus and C. glacialis

Contrasting transcriptome response to thermal stress in two key zooplankton species, Calanus finmarchicus and C. glacialis

Reduced up-regulation of gene expression in response to elevated temperatures in the mid-Atlantic population of Calanus finmarchicus

Life Cycle Impact Assessment in the Arctic: Challenges and Research Needs

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