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An Arctic predator–prey system in flux: climate change impacts on coastal space use by polar bears and ringed seals
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-17)
<p>1. Climate change is impacting different species at different rates, leading to alterations in biological interactions with ramifications for wider ecosystem functioning. Understanding these alterations can help improve predictive capacity and inform management efforts designed to mitigate against negative impacts.</p>
<p>2. We investigated how the movement and space use patterns of polar bears ...
Haul-out behaviour of Arctic ringed seals (Pusa hispida): inter-annual patterns and impacts of current environmental change
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-27)
Hauling out onto a solid substrate is an integral part of most pinnipeds’ activity budgets. Ringed seals (<i>Pusa hispida</i>) are an Arctic species that hauls out on sea ice routinely throughout the year. In 2006, a sudden change in the sea-ice regime occurred in Svalbard (Norway). Amongst other changes, the amount of land-fast ice declined sharply. This study examined the intra- and inter-annual ...
Harbour seal Phoca vitulina movement patterns in the high-Arctic archipelago of Svalbard, Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014-09-03)
Harbour seals Phoca vitulina are mainly considered a temperate species, but the
world’s northernmost population resides year-round in the high-Arctic archipelago of Svalbard. In
this study we document post-moulting at-sea movements of 30 individuals from this population
using satellite relay data loggers deployed in the autumns of 2009 and 2010. All of the seals
showed a strong preference for ...
Haul-out behaviour of the world's northernmost population of harbour seals (Phoca vitulina) throughout the year
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
Seasonal, oceanographic and atmospheric drivers of diving behaviour in a temperate seal species living in the high arctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-07-21)
The harbour seal (Phoca vitulina) population in Svalbard marks the northernmost limit of the
species’ range. This small population experiences environmental extremes in sea and air
temperatures, sea ice cover and also in light regime for this normally temperate species.
This study deployed Conductivity Temperature Depth Satellite Relay Data Loggers (CTDSRDLs)
on 30 adult and juvenile harbour ...
Bearded seal (Erignathus barbatus) vocalizations across seasons and habitat types in Svalbard, Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-17)
Male bearded seals (Erignathus barbatus) use vocal displays to attract females and to compete with other males during the mating season. This makes it possible to monitor breeding populations of this species using passive acoustic monitoring (PAM). This study analysed year-round acoustic data records from AURAL instruments in Svalbard (Norway) to investigate seasonal variation in the acoustic presence ...
Drones and marine mammals in Svalbard, Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-14)
The impact of remotely piloted aircraft systems (RPAS) on
marine mammals remains poorly documented despite their
increasing use. In the high-Arctic Archipelago of Svalbard, where
marine mammals face increasing pressure from climate change
and expanding tourism, the use of RPAS remains largely
unregulated. In this study we assessed the impacts of RPAS
across a range of species to provide ...
Habitats and movement patterns of white whales Delphinapterus leucas in Svalbard, Norway in a changing climate
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-24)
Background: The Arctic is experiencing rapid reductions in sea ice and in some areas tidal glaciers are melting and retracting onto land. These changes are occurring at extremely rapid rates in the Northeast Atlantic Arctic. The aim of this study was to investigate the impacts of these environmental changes on space use by white whales (Delphinapterus leucas) in Svalbard, Norway. Using a unique ...
Contrasting changes in space use induced by climate change in two Arctic marine mammal species
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-06)
Global warming is inducing major environmental changes in the Arctic. These changes will differentially affect species owing to differences in climate sensitivity and behavioural plasticity. Arctic endemic marine mammals are expected to be impacted significantly by ongoing changes in their key habitats owing to their long life cycles and dependence on ice. Herein, unique biotelemetry datasets for ...