Kelp forest as a habitat for mobile epifauna: case study of Caprella septentrionalis Kröyer, 1838 (Amphipoda, Caprellidae) in an Arctic glacial fjord

• Published in: Polar Research
• Main Authors: Marta Ronowicz, Joanna Legeżyńska, Piotr Kukliński, Maria Włodarska-Kowalczuk
• Format: Article in Journal/Newspaper
• Language: English
• Published: Norwegian Polar Institute 2013
• Subjects: Caprellid amphipod; Arctic fjord; kelp forest; population structure; distribution; macroalgae; Environmental sciences; GE1-350; Oceanography; GC1-1581; Arctic; Hornsund; Polar Research; Spitsbergen
• Online Access: https://doi.org/10.3402/polar.v32i0.21037; https://doaj.org/article/17f96dd2e6374e53a2286d7a2a040e81

Distribution and abundance of the amphipod Caprella septentrionalis in relation to environmental conditions and habitat preferences were investigated in a kelp forest in Hornsund, Spitsbergen. Three sampling sites differed in hydrodynamics, organic and inorganic suspension concentration, and sedimentation rates. None of these abiotic factors or species of a macroalgal host appeared to have a significant influence on C. septentrionalis abundance and size range. An apparent preference towards the blade parts of the algal thalli was observed. These results support the idea of C. septentrionalis as a generalist Arctic–boreal species that takes advantage of the protective nature of kelp forests.