Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea

The Chukchi Sea was sampled in August 2011, a year of near-normal sea ice among recent years, and again in August 2012, a year of all time record low sea ice. The authors have exploited this sampling to test the hypothesis that different sea ice conditions are associated with differences in abundanc...

Full description

Saved in:
Bibliographic Details
Published in:Acta Protozoologica 2014-01, Vol.53 (1), p.101-113
Main Authors: Dolan, John R, Yang, Eun Jin, Kim, Tae Wan, Kang, Sung-Ho
Format: Article
Language:English
Subjects:
Animal biology
Earth Sciences
Life Sciences
Oceanography
Radiolaria
Sciences of the Universe
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Chukchi Sea was sampled in August 2011, a year of near-normal sea ice among recent years, and again in August 2012, a year of all time record low sea ice. The authors have exploited this sampling to test the hypothesis that different sea ice conditions are associated with differences in abundances or species composition of microzooplankton through an examination of tintinnids and radiolarians. From 18 stations in 2011, and 19 stations in 2012, organisms were enumerated in plankton net tow material, and chlorophyll determinations made from discrete depth samples. They found that, the low sea ice conditions of 2012 were associated with higher chlorophyll concentrations, compared to 2011. However, tintinnid ciliates and radiolarians were much lower in concentration, by about an order of magnitude, compared to 2011. In both years the radiolarian assemblage was dominated by Amphiselma setosa. They have presented these findings in detail and discuss possible explanations for the apparent differences in the microzooplankton communities associated with distinct sea ice conditions in the Chukchi Sea.
ISSN:0065-1583
1689-0027
DOI:10.4467/16890027AP.14.010.1447