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Distribution and abundance of pteropods in the western Barents Sea

Paula Kacprzak
Paula Kacprzak
, 
Anna Panasiuk
Anna Panasiuk
, 
Justyna Wawrzynek
Justyna Wawrzynek
 y 
Agata Weydmann
Agata Weydmann
   | 12 dic 2017
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Article Category: Original research paper
Publicado en línea: 12 dic 2017
Páginas: 393 - 404
Recibido: 02 ene 2017
Aceptado: 03 jul 2017
DOI: https://doi.org/10.1515/ohs-2017-0039
© 2017 Faculty of Oceanography and Geography, University of Gdańsk, Poland. All rights reserved
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Map of species composition in the study area
Map of species composition in the study area

Figure 2

Variability in temperature and salinity of surface water at the sampling stations along the studied transect (the value of 200 m was used for the deeper stations and 100 m was used for the shallower stations)
Variability in temperature and salinity of surface water at the sampling stations along the studied transect (the value of 200 m was used for the deeper stations and 100 m was used for the shallower stations)

Figure 3

Size distributions for pteropods in the study area in August 2011 (some species were omitted due to the absence in the station area or due to the low abundance of specimens)
Size distributions for pteropods in the study area in August 2011 (some species were omitted due to the absence in the station area or due to the low abundance of specimens)

Figure 4

Redundancy analysis (RDA) ordination plot showing the relationship between the abundance of Pteropoda ontogenetic stages and the significant environmental variables, with the proportion of total variability explained by the first two canonical axes. Note that males and females are identified based on respective sizes.
Redundancy analysis (RDA) ordination plot showing the relationship between the abundance of Pteropoda ontogenetic stages and the significant environmental variables, with the proportion of total variability explained by the first two canonical axes. Note that males and females are identified based on respective sizes.

Sampling details with the specification of sampling stations

Station Longitude Latitude Sampling date Time Max haul depth (m) Filtered water volume (m3) Net obliquity (°) Water mass
V31 75°42.002′N 17°32.797′E 10.08.2011 6:04:00 153 2128 50 Atlantic
V26 74°57.001′N 18°25.047′E 10.08.2011 12:50:00 49 2115 45 Arctic
V23 74°41.972′N 18°39.208′E 10.08.2011 15:30:00 57 1621 45 Arctic
V19 74°09.897′N 19°09.453′E 10.08.2011 20:00:00 49 2381 45 Arctic
V15 73°29.932′N 19°19.694′E 11.08.2011 1:00:00 212 4099 45 Atlantic
V13 73°00.056′N 19°27.466′E 11.08.2011 6:10:00 212 4778 45 Atlantic
V9 71°59.990′N 19°41.012′E 11.08.2011 15:00:00 141 3754 45 Atlantic
V4 70°59.997′N 19°53.924′E 11.08.2011 20:00:00 106 4246 45 Atlantic

Ranges of Limacina helicina, Limacina retroversa and Clione limacina densities (ind. 1000 m-3) at sampling stations

Station Limacina helicina Limacina retroversa Clione limacina
ind. 1000 m-3
V31 177 44 -
V26 12584 446 -
V23 1317 26 15
V19 1632 2 22
V15 56 134 4
V13 1213 136 1
V9 - 1640 4
V4 44 51826 267

Chlorophyll concentration (mg m-3) in the study area

Station Chlorophyll (mg m-3)
April May June July August Mean
V31 7.183 8.297 0.842 1.688 0.696 3.741
V26 1.205 0.941 2.324 0.532 0.977 1.196
V23 0.480 0.885 2.004 0.392 0.765 0.905
V19 1.126 1.990 1.862 NoData 0.684 1.416
V15 1.365 3.570 2.068 0.488 0.539 1.606
V13 2.270 9.077 8.564 NoData 0.643 5.138
V9 0.783 0.951 0.962 0.269 0.467 0.687
V4 0.477 0.934 1.242 0.880 0.528 0.812
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