Using a metabolomics approach to investigate the sensitivity of a potential Arctic-invader and its Arctic sister-species to marine heatwaves and traditional harvesting disturbances

Beaudreau, Nicholas; Page, Tessa M.; Drolet, David; McKindsey, Christopher W.; Howland, Kimberly L.; Calosi, Piero

doi:10.1016/j.scitotenv.2024.170167

Science of The Total Environment

2024

DOI: 10.1016/j.scitotenv.2024.170167

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Using a metabolomics approach to investigate the sensitivity of a potential Arctic-invader and its Arctic sister-species to marine heatwaves and traditional harvesting disturbances

Nicholas Beaudreau,

Tessa M. Page,

David Drolet

et al.

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2024

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Cited by 2 publications

References 147 publications

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Marine heatwaves in the Subarctic and the effect of acute temperature change on the key grazer Strongylocentrotus droebachiensis (Echinoidea, Echinodermata)

Koch,

Jungblut,

Götze

et al. 2024

ICES Journal of Marine Science

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Subarctic fjord systems are facing a continuous temperature increase as well as more frequent and more intense marine heatwaves (MHWs). MHWs are periods of exceptionally high temperatures above the long-term average. In the Porsangerfjord (Northern Norway), the average water temperature ranges from 2.5°C in March to 10°C in August. MHWs frequently exceed the summer maximum by up to 6°C with so far unknown ecological effects. The green sea urchin, Strongylocentrotus droebachiensis, is a key grazer on habitat-forming kelp in Subarctic fjord systems. At high abundances, sea urchins transform productive kelp beds through pronounced grazing into depleted sea urchin barrens. In a laboratory experiment, we investigated the influence of acute temperature change on the grazing activity and the metabolic performance of the green sea urchin. Grazing rates increased continuously from 2 to 10°C but decreased again at 14°C. At 22°C, rapid decay of sea urchins were associated with changes of the metabolic energy state from aerobiosis to anaerobiosis. We propose two scenarios: Moderate warming might lead to the proliferation of the sea urchin population and increased grazing pressure on kelp forests, while extreme warming, as predicted by the end of the century, as well as the occurrence of extreme MHWs, may severely impair the sea urchin population and, in turn, might favour the proliferation of adaptable kelp species.

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Marine heatwaves in the Subarctic and the effect of acute temperature change on the key grazer Strongylocentrotus droebachiensis (Echinoidea, Echinodermata)

Koch,

Jungblut,

Götze

et al. 2024

ICES Journal of Marine Science

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Shifting invertebrate distributions in the Barents Sea since pre-1900

Calvet,

Bluhm,

Yoccoz

et al. 2024

Front. Mar. Sci.

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Marine invertebrate habitats are experiencing warming, and oceanic carbon dioxide levels are on the rise. These changes result in shifts in species distributions. Monitoring and understanding these shifts provides vital information because each species plays a unique ecological role, and the human utilization of marine species is intrinsically linked to their geographic locations. Here, we examine distribution shifts of marine invertebrates in the Barents Sea since pre-1900. Using data from the Global Biodiversity Information Facility, we analyzed species occurrences across warm, cold and mixed temperature zones, distinguishing between benthic and pelagic taxa. Our findings indicate community shifts in each of five separated time periods, with the most pronounced shifts occurring after 1980 in the cold and mixed zones, and earlier in the warm zone. The significant biogeographical changes at the community scale occurred both in benthic and pelagic realms, yet with differing trajectories in the period past 2000, and largely coincided with increased Atlantic Water inflow and reduced ice cover. Several invertebrate taxa exhibited a northward movement, falling into two categories: species migrating into the Barents Sea from the Norwegian mainland shelf, and those relocating from the southern Barents Sea to areas with mixed and colder temperatures. Some of these species may serve as indicator species for monitoring ecosystem and community change. The study highlights the importance of long-term datasets in quantifying community distribution shifts and understanding their ecological impacts.

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Using a metabolomics approach to investigate the sensitivity of a potential Arctic-invader and its Arctic sister-species to marine heatwaves and traditional harvesting disturbances

Cited by 2 publications

References 147 publications

Marine heatwaves in the Subarctic and the effect of acute temperature change on the key grazer Strongylocentrotus droebachiensis (Echinoidea, Echinodermata)

Marine heatwaves in the Subarctic and the effect of acute temperature change on the key grazer Strongylocentrotus droebachiensis (Echinoidea, Echinodermata)

Shifting invertebrate distributions in the Barents Sea since pre-1900

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