• Arctic Marine Data Collection Using Oceanic Gliders: Providing Ecological Context to Cetacean Vocalizations 

      Aniceto, Ana Sofia; Pedersen, Geir; Primicerio, Raul; Biuw, Martin; Lindstrøm, Ulf (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-16)
      To achieve effective management and understanding of risks associated with increasing anthropogenic pressures in the ocean, it is essential to successfully and efficiently collect data with high spatio–temporal resolution and coverage. Autonomous Underwater Vehicles (AUVs) are an example of technological advances with potential to provide improved information on ocean processes. We demonstrate the ...
    • Autonomous Surface and Underwater Vehicles as Effective Ecosystem Monitoring and Research Platforms in the Arctic—The Glider Project 

      Camus, Lionel; Andrade, Hector; Aniceto, Ana Sofia; Aune, Magnus; Bandara, Kanchana; Basedow, Sünnje Linnéa; Christensen, Kai Håkon; Cook, Jeremy; Daase, Malin; Dunlop, Katherine Mary; Falk-Petersen, Stig; fietzek, Peter; Fonnes, Gro; Ghaffari, Peygham; Gramvik, Geir; Graves, Inger; Hayes, Daniel; Langeland, Tom; Lura, Harald; Marin, Trond Kristiansen; Nøst, Ole Anders; Peddie, David; Pederick, Joel; Pedersen, Geir; Sperrevik, Ann Kristin; Sørensen, Kai; Tassara, Luca; Tjøstheim, Sigurd; Tverberg, Vigdis; Dahle, Salve (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-12)
      Effective ocean management requires integrated and sustainable ocean observing systems enabling us to map and understand ecosystem properties and the effects of human activities. Autonomous subsurface and surface vehicles, here collectively referred to as “gliders”, are part of such ocean observing systems providing high spatiotemporal resolution. In this paper, we present some of the results achieved ...
    • Changes in humpback whale song structure and complexity reveal a rapid evolution on a feeding ground in Northern Norway 

      Tyarks, Saskia C.; Aniceto, Ana Sofia; Ahonen, Heidi; Pedersen, Geir; Lindstrøm, Ulf Ove (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-09)
      Singing behaviour by male humpback whales (Megaptera novaeangliae) has traditionally been associated with low-latitude breeding grounds. However, in recent years, this vocal behaviour has been increasingly reported outside these areas. All singers in a given population sing the same version of a song and this song is continually evolving over time with modifications on different levels within the ...
    • Humpback Whale (Megaptera novaeangliae) Song on a Subarctic Feeding Ground 

      Martin, Saskia C.; Aniceto, Ana Sofia; Ahonen, Heidi; Pedersen, Geir; Lindstrøm, Ulf (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-24)
      Male humpback whales (Megaptera novaeangliae) are known to produce long complex sequences of structured vocalizations called song. Singing behavior has traditionally been associated with low latitude breeding grounds but is increasingly reported outside these areas. This study provides the first report of humpback whale songs in the subarctic waters of Northern Norway using a long-term bottom-moored ...
    • Mass strandings of seven toothed and baleen whale species in Northern Norway in March 2020 call for further investigation 

      Aniceto, Ana Sofia; Tassara, Luca; Rikardsen, Audun; Blévin, Pierre (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-06)
      Monitoring whale strandings are a key aspect of ecosystem management as stranded animals can provide indications on ecosystem health, pollution and adverse efects due to anthropogenic activities. Most mass mortality events are reported for toothed whales and rarely involve baleen whales. In the course of one month in spring 2020, 17 whales belonging to seven diferent species, stranded on the ...
    • Measured sound levels in ice-covered shallow water caused by seismic shooting on top of and below floating ice, reviewed for possible impacts on true seals 

      Stemland, Helene Meling; Johansen, Tor Arne; Ruud, Bent Ole; Aniceto, Ana Sofia (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-01)
      Seismic surveying of the Arctic is important for several reasons, but also introduces some challenges. One is the concern that seismic data may affect the hearing of marine mammals living there, including true seals. We performed two seismic experiments on floating ice on Svalbard in the Norwegian Arctic in early March 2016 and late May 2017, just before and right after the ringed seal breeding ...
    • Monitoring marine mammals using unmanned aerial vehicles: quantifying detection certainty 

      Aniceto, Ana Sofia; Biuw, Martin; Lindstrøm, Ulf; Solbø, Stian; Broms, Fredrik Björn; Carroll, JoLynn (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-08)
      Unmanned aerial vehicles (UAVs) are increasingly being recognized as potentially useful for detection of marine mammals in their natural habitats, but an important consideration is the associated uncertainties in animal detection. We present a study based on field trials using UAVs to carry out image‐based monitoring of cetaceans in two fjords in northern Norway. We conducted 12 missions to assess ...
    • Seasonal ecology in ice-covered Arctic seas - Considerations for spill response decision making 

      Aune, Magnus; Aniceto, Ana Sofia; Biuw, Martin; Daase, Malin; Falk-Petersen, Stig; Leu, Eva; Ottesen, Camilla; Sagerup, Kjetil; Camus, Lionel (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-05)
      Due to retreating sea ice and predictions of undiscovered oil and gas resources, increased activity in Arctic shelf sea areas associated with shipping and oil and gas exploration is expected. Such activities may accidentally lead to oil spills in partly ice-covered ocean areas, which raises issues related to oil spill response. Net Environmental Benefit Analysis (NEBA) is the process that the response ...
    • Temporal patterns in the soundscape of a Norwegian gateway to the Arctic 

      Aniceto, Ana Sofia; Ferguson, Elizabeth L.; Pedersen, Geir; Tarroux, Arnaud; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-10)
      As an Arctic gateway, the Norwegian Sea sustains a rich diversity of seasonal and resident species of soniferous animals, vulnerable to the efects of climate change and anthropogenic activities. We show the occurrence of seasonal patterns of acoustic signals in a small canyon of Northern Norway, and investigate cetacean vocal behavior, human-made noise, and climatic contributions to underwater ...