Blar i forfatter "Olsen, Morten Tange"

Viser treff 1-4 av 4

    • Determination of growth, mass, and body mass index of harbour porpoises (Phocoena phocoena): Implications for conservational status assessment of populations 

      Stepien, Emilie Nicoline; Nabe–Nielsen, Jacob; Hansen, Kirstin Anderson; Kristensen, Jakob Højer; Blanchet, Marie-Anne; Brando, Sabrina; Desportes, Geneviève; Lockyer, Christina; Marcenaro, Lauro; Bunskoek, Paulien; Kemper, José; Siebert, Ursula; Olsen, Morten Tange; Wahlberg, Magnus (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-27)
      Longitudinal data on individual growth and seasonal changes in body mass, girth, and blubber thickness are rarely available for cetaceans, making it difficult to assess their population composition and individual nutritional condition. During different time intervals from 1997 to 2020, we collected longitudinal data on length, body mass, girth,and blubber thickness from seventeen harbour porpoises ...

    • Holistic monitoring of freshwater and terrestrial vertebrates by camera trapping and environmental DNA 

      Holm, Anne Marie Rubæk; Knudsen, Steen Wilhelm; Månsson, Malene; Pedersen, Ditte Elmgreen; Nordfoss, Pauli Holm; Johansson, Daniel Klingberg; Gramsbergen, Marthe; Havmøller, Rasmus Worsøe; Sigsgaard, Eva Egelyng; Thomsen, Philip Francis; Olsen, Morten Tange; Møller, Peter Daniel Rask (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-20)
      The anthropogenic impact on the world's ecosystems is severe and the need for non-invasive, cost-effective tools for monitoring and understanding those impacts are therefore urgent. Here, we combine two such methods in a comprehensive multi-year study; camera trapping (CT) and analysis of environmental DNA (eDNA), in river marginal zones of a temperate, wetland Nature Park in Denmark. CT was ...

    • Marine mammal hotspots across the circumpolar Arctic 

      Hamilton, Charmain D.; Lydersen, Christian; Aars, Jon; Acquarone, Mario; Atwood, Todd; Baylis, Alastair; Biuw, Martin; Boltunov, Andrei N.; Born, Erik W.; Boveng, Peter; Brown, Tanya M.; Cameron, Michael; Citta, John; Crawford, Justin; Dietz, Rune; Elias, Jim; Ferguson, Steven H.; Fisk, Aaron; Folkow, Lars; Frost, Kathryn J.; Glazov, Dmitri M.; Granquist, Sandra M.; Gryba, Rowenna; Harwood, Lois; Haug, Tore; Heide-Jørgensen, Mads Peter; Hussey, Nigel E.; Kalinek, Jimmy; Laidre, Kristin L.; Litovka, Dennis I.; London, Josh M.; Loseto, Lisa L.; MacPhee, Shannon; Marcoux, Marianne; Matthews, Cory J. D.; Nilssen, Kjell Tormod; Nordøy, Erling Sverre; O’Corry-Crowe, Greg; Øien, Nils Inge; Olsen, Morten Tange; Quakenbush, Lori; Rosing-Asvid, Aqqalu; Semenova, Varvara; Shelden, Kim E. W.; Shpak, Olga V.; Stenson, Garry; Storrie, Luke; Sveegaard, Signe; Teilmann, Jonas; Ugarte, Fernando; Von Duyke, Andrew L.; Watt, Cortney; Wiig, Øystein; Wilson, Ryan R.; Yurkowski, David J.; Kovacs, Kit M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-11)
      Aim: Identify hotspots and areas of high species richness for Arctic marine mammals.<p><p> Location: Circumpolar Arctic. <p>Methods: A total of 2115 biologging devices were deployed on marine mammals from 13 species in the Arctic from 2005 to 2019. Getis-Ord Gi* hotspots were calculated based on the number of individuals in grid cells for each species and for phyloge-netic groups (nine pinnipeds, ...

    • Uncovering neutral and adaptive genomic differentiation among European perch with brackish water and freshwater origin in the western Baltic Sea region 

      Skovrind, Mikkel; Pacheco, George; Christensen, Emil Aputsiaq Flindt; Gopalakrishnan, Shyam; Fietz, Katharina; Holm-Hansen, Tore Hejl; Vieira, Filipe Garrett; Krag, Marcus Anders; Carl, Henrik; Gilbert, Marcus Thomas Pius; Olsen, Morten Tange; Møller, Peter Daniel Rask (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-13)
      Environmental variation across the range of wild species can lead to local adaptations. The Baltic Sea was formed when the Fenno-Scandian ice sheet retreated around 12 thousand years ago, creating a new brackish water habitat colonised by both marine and freshwater fish species. The European perch (Perca fluviatilis) is a predatory freshwater fish with a large geographical distribution across ...