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Published 29.11.2017 - Updated 29.11.2017

Climate-driven changes in functional biogeography of Arctic marine fish communities

The distribution of fish species in the Barents Sea is changing due to increasing temperatures and reduced sea ice cover. We were eager to know if shifts in species composition and distribution are also reflected in changes in ecosystem functioning, i.e., in the way important biological and biogeochemical processes work. The warmer temperatures and reduction in sea ice coverage are rapidly altering how marine communities function in the Barents Sea. The rapid changes in functional characteristics of Arctic communities indicate that it is not only the species that are changing, as previous studies had shown, but the way the ecosystem functions is also changing. The functional characteristics associated with warmer boreal fish species are quickly replacing the functional characteristics associated with the colder Arctic fish species. Boreal and Arctic communities each previously covered about 50% of the Barents Sea, but the Arctic communities were reduced to 20% of the region during the recent warming period.

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Published 20.11.2017 - Updated 20.11.2017

The 2016-2025 IMBeR Science Plan and Implementation Strategy has been ratified!

After an intensive consultation and review process that began in 2012, the IMBeR Science Plan and Implementation Strategy (SPIS) has now been sanctioned by IMBeR’s sponsors – the Scientific Committee on Oceanic Research (SCOR) and Future Earth. The SPIS outlines IMBeR´s research agenda until 2025, towards its vision of Ocean sustainability under global change for the benefit of society.

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Published 23.10.2017 - Updated 23.10.2017

New CLIOTOP special issue - Tunas and their fisheries: safeguarding sustainability in the twenty-first century

Tuna are one of the pelagic species central to IMBeR´s CLIOTOP regional programme. The relationship of tunas to their environment has been studied for decades and is increasingly important as the effects of climate change become more apparent in the pelagic environment. Recent studies relating climate change to changes in movements and distributions of tunas are based on physiological studies on tunas and awareness of species-specific suitable habitats. This special issue focuses on these commercially and ecologically important species, with contributions on species, life history stages, fisheries, and bycatch, with the following contributions.

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Published 28.09.2017 - Updated 28.09.2017

Expanding marine predator isotope work: community-level metrics, mercury isotopes, and data-model linkages

Ecological applications of stable carbon and nitrogen isotope analysis are rapidly expanding through the analysis of metadata. Recent efforts of the IMBeR CLIOTOP Task Team on Marine Predator Isotopes have focused on finalising an open-access data paper and three research papers that present novel findings of global scale, spatial and temporal analyses on migratory tuna muscle isotopes. The task team recently met in Brest, France to discuss novel ways to expand our ecological understanding of the ocean. The main approaches included formulating community level metrics, using isotopes of mercury, and finding practical ways to link isotopic data with ecosystem and biogeochemical models.

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