Pteropod sedimentation at AWI HAUSGARTEN at two different sites from 2004 to 2011 ...

• Main Authors: Busch, Kathrin, Bauerfeind, Eduard, Nöthig, Eva-Maria
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2015
• Subjects: Long-term Investigation at AWI-Hausgarten off Svalbard Hausgarten; Fram Strait; Limacina helicina; Subarctic; Svalbard
• Online Access: https://dx.doi.org/10.1594/pangaea.845918; https://doi.pangaea.de/10.1594/PANGAEA.845918

Pteropods are important organisms in high-latitude ecosystems, and they are expected to severely suffer from climate change in the near future. In this study, sedimentation patterns of two pteropod species, the polar Limacina helicina and the subarctic boreal L. retroversa, are presented. Time series data received by moored sediment traps at the Long-Term Ecological Research (LTER) Observatory HAUSGARTEN in eastern Fram Strait were analyzed during the years 2008 to 2012. Results were derived from four different deployment depths (~200, 1,250, 2,400, and 2,550 m) at two different sites (79° N, 04°20' E; 79°43' N, 04°30' E). A species-specific sedimentation pattern was present at all depths and at both sites showing maximal flux rates during September/October for L. helicina and in November/December for L. retroversa. The polar L. helicina was outnumbered by L. retroversa (55-99 %) at both positions and at all depths supporting the recently observed trend toward the dominance of the subarctic boreal species. ... : Supplement to: Busch, Kathrin; Bauerfeind, Eduard; Nöthig, Eva-Maria (2015): Pteropod sedimentation patterns in different water depths observed with moored sediment traps over a 4-year period at the LTER station HAUSGARTEN in eastern Fram Strait. Polar Biology, 38(6), 845-859 ...