Blar i forfatter "Christensen, Helle Torp"

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    • Increasing temperatures, diversity loss and reorganization of deep-sea fish communities east of Greenland 

      Emblemsvåg, Margrete; Núñez-Riboni, Ismael; Christensen, Helle Torp; Nogueira, Adriana; Gundersen, Agnes Christine; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2020)
      In recent years, Arctic and sub-Arctic fish communities have shown extensive reorganization on shelves and in shallow waters, but little is known about the ecological impact of environmental changes in deeper waters. We examined temporal changes (1998-2016) in fish diversity and community structure based on research survey data from East Greenland, over a depth gradient spanning 400 to 1500 m. A ...

    • Validation of pop-up satellite archival tags (PSATs) on Atlantic cod (Gadus morhua) in a Greenland fjord 

      Nielsen, Julius; Estévez-Barcia, Daniel; Post, Søren; Christensen, Helle Torp; Retzel, Anja; Meire, Lorenz; Rigét, Frank; Strøm, John Frederik; Rikardsen, Audun H.; Hedeholm, Rasmus (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-28)
      Traditional tagging techniques are simple and cost-effective, but inferences require recaptures and data on movement/migration are limited to a start and end position at unpredictable intervals. Pop-up satellite archival tags (PSATs) offer other opportunities, as they provide positions at pre-programmed times and collect on-route data, which can be used to describe position, behavior, and habitat ...