Blar i forfatter "Bitz-Thorsen, Julie"

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    • Allochrony as a potential driver for reproductive isolation in adaptive radiations of European whitefish ecomorphs 

      Bitz-Thorsen, Julie; Häkli, Katja; Bhat, Shripathi; Præbel, Kim (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-29)
      In northern Fennoscandian lakes, monophylogenetic lineages of postglacial fishes are radiating into several adaptive forms, but the speciation process is still at an incipient stage. The speciation process has received increased attention over the years, but the underlying mechanisms and drivers are still debated and poorly understood. European whitefish (<i>Coregonus lavaretus</i> [L.]) is the most ...

    • Domestic cats (Felis catus) in Denmark have increased significantly in size since the Viking Age 

      Bitz-Thorsen, Julie; Gotfredsen, Anne Birgitte (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-03)
      The earliest finds of domestic cat in Denmark date back to the Roman Iron Age (c. 1–375 AD). Initially, cats occurred sparsely and only from the Viking Age (c. 850–1050 AD) did they become more frequent in numbers, though primarily in urban contexts and in connection with fur production. In medieval times, cats became beasts of pest control in rural settlements, manorial estates as well as in the ...

    • Molecular tools prove little auks from Svalbard are extremely selective for Calanus glacialis even when exposed to Atlantification 

      Balazy, Kaja; Trudnowska, Emilia; Wojczulanis-Jakubas, Katarzyna; Jakubas, Dariusz; Præbel, Kim; Choquet, Marvin; Brandner, Melissa Michelle; Schultz, Mads; Bitz-Thorsen, Julie; Boehnke, Rafał; Szeligowska, Marlena; Descamps, Sebastien; Strøm, Hallvard; Blachowiak-Samolyk, Kasia (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-22)
      Two Calanus species, C. glacialis and C. finmarchicus, due to different life strategies and environmental preferences act as an ecological indicators of Arctic Atlantification. Their high lipid content makes them important food source for higher trophic levels of Arctic ecosystems including the most abundant Northern Hemisphere's seabird, the little auk (Alle alle). Recent studies indicate a critical ...