Blar i forfatter "Swanson, Heidi"

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    • Benthic-pelagic trophic coupling in an Arctic marine food web along vertical water mass and organic matter gradients 

      Stasko, Ashley D; Bluhm, Bodil; Michel, Christine; Archambault, Philippe; Majewski, Andrew; Reist, James D; Swanson, Heidi; Power, Michael (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-26)
      Understanding drivers of benthic-pelagic coupling in Arctic marine ecosystems is key to identifying benthic areas that may be sensitive to climate-driven changes in hydrography and surface production. We coupled algal biomass and sedimentary characteristics with stable isotope data for 113 fishes and invertebrates in the Canadian Beaufort Sea and Amundsen Gulf to examine how trophic structure was ...

    • Circumpolar patterns of Arctic freshwater fish biodiversity: A baseline for monitoring 

      Laske, Sarah M.; Amundsen, Per-Arne; Christoffersen, Kirsten Seestern; Erkinaro, Jaakko; Guðbergsson, Guðni; Hayden, Brian; Heino, Jani; Holmgren, Kerstin; Kahilainen, Kimmo Kalevi; Lento, Jennifer; Orell, Panu; Östergren, Jan; Power, Michael; Rafikov, Ruslan; Romakkaniemi, Atso; Svenning, Martin; Swanson, Heidi; Whitman, Matthew; Zimmerman, Christian E. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-01)
      Climate change, biological invasions, and anthropogenic disturbance pose a threat to the biodiversity and function of Arctic freshwater ecosystems. Understanding potential changes in fish species distribution and richness is necessary, given the great importance of fish to the function of freshwater ecosystems and as a resource to humans. However, information gaps limit large‐scale studies and our ...

    • Contributions and perspectives of Indigenous Peoples to the study of mercury in the Arctic 

      Lennert, Ann Eileen; Houde, Magali; Krümmel, Eva M.; Mustonen, tero; Brammer, Jeremy; Brown, Tanya M.; Chételat, John; Dahl, Parnuna Egede; Dietz, Rune; Evans, Marlene; Gamberg, Mary; Gauthier, Marie-Josée; Gérin-Lajoie, José; Hauptmann, Aviaja Lyberth; Heath, Joel P.; Henri, Dominique A.; Kirk, Jane; Laird, Brian; Lemire, Mélanie; Letcher, Robert J.; Lord, Sarah; Loseto, Lisa; MacMillan, Gwyneth A.; Mikaelsson, Stefan; Mutter, Edda A.; O'Hara, Todd; Ostertag, Sonja; Robards, Martin; Shadrin, Vyacheslav; Smith, Merran; Stimmelmayr, Raphaela; Sudlovenick, Enooyaq; Swanson, Heidi; Thomas, Philippe J.; Walker, Virginia K.; Whiting, Alex (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-11)
      Arctic Indigenous Peoples are among the most exposed humans when it comes to foodborne mercury (Hg). In response, Hg monitoring and research have been on-going in the circumpolar Arctic since about 1991; this work has been mainly possible through the involvement of Arctic Indigenous Peoples. The present overview was initially conducted in the context of a broader assessment of Hg research organized ...

    • Relationships between depth and δ15N of Arctic benthos vary among regions and trophic functional groups 

      Stasko, Ashley D; Bluhm, Bodil; Reist, James D; Swanson, Heidi; Power, Michael (Journal article; Tidsskriftartikkel, 2018-03-27)
      Stable isotope ratios of nitrogen (δ<sup>15</sup>N) of benthic primary consumers are often significantly related to water depth. This relationship is commonly attributed to preferential uptake of <sup>14</sup>N from sinking particulate organic matter (POM) by microbes, and suggests that relationships between δ<sup>15</sup>N and water depth may be affected by local POM sources and flux dynamics. ...