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Bioluminescence as an ecological factor during high Arctic polar night
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
Bioluminescence commonly influences pelagic trophic interactions at mesopelagic depths. Here we characterize a vertical gradient in structure of a generally low species diversity bioluminescent community at shallower epipelagic depths during the polar night period in a high Arctic fjord with in situ bathyphotometric sampling. Bioluminescence potential of the community increased with depth to a peak ...
Bioluminescence in the high Arctic during the polar night
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
This study examines the composition and activity of the planktonic community during the polar night in the high Arctic Kongsfjord, Svalbard. Our results are the first published evidence of bioluminescence among zooplankton during the Arctic polar night. The observations were collected by a bathyphotometer detecting bioluminescence, integrated into an autonomous underwater vehicle, to determine the ...
The advective origin of an under-ice spring bloom in the Arctic Ocean using multiple observational platforms
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-13)
Under-ice blooms of phytoplankton in the Chukchi Sea have been observed, with strong implications for our understanding of the production regimes in the Arctic Ocean. Using a combination of satellite remote sensing of phytoplankton biomass, in situ observations under sea ice from an autonomous underwater vehicle (AUV), and in vivo photophysiology, we examined the composition, magnitude and origin ...
In the dark: a review of ecosystem processes during the Arctic polar night
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-28)
Several recent lines of evidence indicate that the polar night is key to understanding Arctic marine
ecosystems. First, the polar night is not a period void of biological activity even though primary production
is close to zero, but is rather characterized by a number of processes and interactions yet to be fully
understood, including unanticipated high levels of feeding and reproduction in a ...
Is ambient light during the high Arctic polar night sufficient to act as a visual cue for zooplankton?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-03)
The light regime is an ecologically important factor in pelagic habitats, influencing a range of
biological processes. However, the availability and importance of light to these processes in
high Arctic zooplankton communities during periods of 'complete' darkness (polar night) are
poorly studied. Here we characterized the ambient light regime throughout the diel cycle
during the high Arctic ...