Distribution and abundance of pteropods in the western Barents Sea

The abundance and horizontal distribution of three pteropod species, and were examined in the western entrance of the Barents Sea (Polar Front region) in August 2011. Sixteen samples were collected from 8 sampling sites located along a latitudinal transect. The southern part of the study area (south...

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Bibliographic Details
Published in:Oceanological and hydrobiological studies 2017-12, Vol.46 (4), p.393-404
Main Authors: Kacprzak, Paula, Panasiuk, Anna, Wawrzynek, Justyna, Weydmann, Agata
Format: Article
Language:English
Subjects:
Abiotic factors
Abundance
Antarctic front
Aquatic communities
Aquatic environment
Barents Sea
Biodiversity
Chlorophyll
Chlorophylls
Climate change
Clione limacina
Coasts
Density
Distribution
Environmental factors
Food
Geographical distribution
Horizontal distribution
Invertebrate zoology
Juveniles
Limacina helicina
Limacina retroversa
Marine
Pelagic environment
Plankton
Polar fronts
Polar oceanography
Population structure
Pteropoda
Redundancy
Salinity
Sampling
Seawater
Shells
species size distribution
Surface salinity
Surface temperature
Surface water
Temperature
Temperature differences
Temperature gradients
Water density
Water masses
Water temperature
West Spitsbergen Current
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Summary:The abundance and horizontal distribution of three pteropod species, and were examined in the western entrance of the Barents Sea (Polar Front region) in August 2011. Sixteen samples were collected from 8 sampling sites located along a latitudinal transect. The southern part of the study area (south of 73°N) was dominated by , while was mostly observed north of 73°N. Surface water temperature differences between the coldest and the warmest station were around 8°C. The highest density of was found in the south, near the Norwegian coast (nearly 52 000 ind. 1000 m ), while the highest density of was observed in the region of the Arctic water masses (nearly 13 000 ind. 1000 m ). The sampled population of pteropods comprised mainly juvenile stages. Redundancy analysis (RDA) of the relationships between environmental factors (mean and surface salinity, mean temperature, sampling depth, chlorophyll concentration) and the population structure showed that mean temperature was the most important factor in the study area, explaining 70.5% of the pteropod community variation.
ISSN:1897-3191
1730-413X
1897-3191
DOI:10.1515/ohs-2017-0039