Benthic habitats around Iceland investigated during the IceAGE expeditions

Karin Meißner*, Nils Brenke, Jörundur Svavarsson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

During the IceAGE (Icelandic marine Animals - Genetics and Ecology) expeditions in waters around Iceland and the Faroe Islands in 2011 and 2013, visual assessments of habitats and the study of surface sediment characteristics were undertaken in 119-2750 m water depth. Visual inspection was realized by means of an epibenthic sled equipped with a digital underwater video camcorder and a still camera. For determination of surface sediment characteristics a subsample of sediment from box corer samples or different grabs was collected and analyzed in the lab. Muddy bottoms predominated in the deep basins (Iceland Basin, Irminger Basin, deep Norwegian and Iceland Seas), while sand and gravel dominated on the shelves and the ridges, and in areas with high currents. Organic contents were highest in the deep Norwegian and Iceland Seas and in the Iceland Basin, and at these sites dense aggregations of mobile epibenthic organisms were observed. Large dropstones were abundant in the Iceland Sea near the shelf and in the Denmark Strait. The dropstones carried diverse, sessile epibenthic fauna, which may be underestimated using traditional sampling gear. The paper supplies new background information for studies based on IceAGE material, especially studies related to ecology and taxonomy.

Original languageEnglish
Pages (from-to)177-202
Number of pages26
JournalPolish Polar Research
Volume35
Issue number2
DOIs
Publication statusPublished - 2014

Other keywords

  • Benthic habitat
  • Icelandic waters
  • North Atlantic
  • Sediment characteristics
  • Visual assessment

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