(Table 3) Growth rates of the juvenile polychaete Scolelepis squamata obtained from ice cores under varying conditions ...

• Main Authors: McConnell, Brenna, Gradinger, Rolf, Iken, Katrin, Bluhm, Bodil Annikki
• Format: Dataset
• Language: English
• Published: PANGAEA 2012
• Subjects: DATE/TIME; Chlorophyll a, adjusted; Experiment; Temperature, technical; Duration, number of days; Scolelepis squamata, growth rate; Coefficient of determination; Significance; Snow/ice sample; Feeding experiment; International Polar Year 2007-2008 IPY; Barrow; ice algae; International Polar Year; IPY; Phytoplankton; Sea ice; Alaska
• Online Access: https://dx.doi.org/10.1594/pangaea.816073; https://doi.pangaea.de/10.1594/PANGAEA.816073

In spring, Arctic coastal fast ice is inhabited by high densities of sea ice algae and, among other fauna, juveniles of benthic polychaetes. This paper investigates the hypothesis that growth rates of juveniles of the common sympagic polychaete, Scolelepis squamata (Polychaeta: Spionidae), are significantly faster at sea ice algal bloom concentrations compared to concurrent phytoplankton concentrations. Juvenile S. squamata from fast ice off Barrow, Alaska, were fed with different algal concentrations at 0 and 5 °C, simulating ambient high sea ice algal concentrations, concurrent low phytoplankton concentrations, and an intermediate concentration. Growth rates, calculated using a simple linear regression equation, were significantly higher (up to 115 times) at the highest algal concentration compared to the lowest. At the highest algal concentration, juveniles grew faster at 5 °C compared to those feeding at 0 °C with a Q10 of 2.0. We conclude that highly concentrated sea ice algae can sustain faster growth ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...