Mixotrophic plankton and Synechococcus distribution in waters around Svalbard, Norway during June 2019
In order to understand the influence of summer conditions (extended daylight, warmer temperature, increased meltwater, increased suspended load and nutrient chemistry) on the distribution of phytoplankton (diatoms & flagellates) and picoplankton community in the surface waters off Svalbard, samp...
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ftnipr:oai:nipr.repo.nii.ac.jp:00016888 2023-05-15T15:12:33+02:00 Mixotrophic plankton and Synechococcus distribution in waters around Svalbard, Norway during June 2019 2021-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16888 http://id.nii.ac.jp/1291/00016757/ en eng https://doi.org/10.1016/j.polar.2021.100697 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16888 http://id.nii.ac.jp/1291/00016757/ Polar Science, 30, 100697(2021-12) 18739652 Synechococcus Mixotrophs Flow cytometry Svalbard Arctic Journal Article 2021 ftnipr https://doi.org/10.1016/j.polar.2021.100697 2023-02-18T20:11:55Z In order to understand the influence of summer conditions (extended daylight, warmer temperature, increased meltwater, increased suspended load and nutrient chemistry) on the distribution of phytoplankton (diatoms & flagellates) and picoplankton community in the surface waters off Svalbard, samples were collected from 6 locations around Svalbard onboard National Geographic Explorer vessel. Additionally, satellite data was obtained for surface temperature, chlorophyll a (chl a) and total suspended mass (TSM). Stations Gnålodden (S1), Bellsund (S4), Open Ocean (S5), and Magdalenefjorden (S6) were along the western coast while stations Storfjorden (S2) and Western Storfjorden (S3) were on the eastern side of Svalbard and open to Barents Sea. Phytoplankton abundance ranged from 4 to 49 × 103 cells L−1 and were dominated by dinoflagellates such as Perdinium, Protoperidinium, Dynophysis, Gyrodinium, Gymnodinium and Torodinium species while diatoms (Navicula) were found only in colder polar waters (S5 and 6). Flowcytometry data showed the predominance of Synechococcus sp. and its abundance varied from 0.8 × 105 cells L−1 (S5) to 4.3 × 105 cells L−1 (S4). The distribution of Synechococcus was positively correlated to nitrate (r = 0.838) and chl a (r = 0.915) while phytoplankton abundance had no correlation with chl a or nitrate. A weak positive linear relation between Synechococcus and TSM suggests that melting of glaciers and influx of land run-off may be playing some role in increasing the picoplankton load in these waters. The predominance of mixotrophic dinoflagellates alongwith ciliates like Strombidium in these waters suggests that grazing of picoplankton as well as bacteria might fuel their carbon demand. Our data reflected post-spring bloom conditions wherein Synechococcus were the dominant primary producers and microbial loop might play an important role in sustaining the mixotroph population. Article in Journal/Newspaper Arctic Barents Sea Bellsund Magdalenefjord* Phytoplankton Polar Science Polar Science Storfjorden Svalbard National Institute of Polar Research Repository, Japan Arctic Svalbard Barents Sea Norway Bellsund ENVELOPE(14.226,14.226,77.662,77.662) Magdalenefjorden ENVELOPE(11.010,11.010,79.569,79.569) Gnålodden ENVELOPE(15.904,15.904,77.016,77.016) Polar Science 30 100697 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Synechococcus Mixotrophs Flow cytometry Svalbard Arctic |
spellingShingle |
Synechococcus Mixotrophs Flow cytometry Svalbard Arctic Mixotrophic plankton and Synechococcus distribution in waters around Svalbard, Norway during June 2019 |
topic_facet |
Synechococcus Mixotrophs Flow cytometry Svalbard Arctic |
description |
In order to understand the influence of summer conditions (extended daylight, warmer temperature, increased meltwater, increased suspended load and nutrient chemistry) on the distribution of phytoplankton (diatoms & flagellates) and picoplankton community in the surface waters off Svalbard, samples were collected from 6 locations around Svalbard onboard National Geographic Explorer vessel. Additionally, satellite data was obtained for surface temperature, chlorophyll a (chl a) and total suspended mass (TSM). Stations Gnålodden (S1), Bellsund (S4), Open Ocean (S5), and Magdalenefjorden (S6) were along the western coast while stations Storfjorden (S2) and Western Storfjorden (S3) were on the eastern side of Svalbard and open to Barents Sea. Phytoplankton abundance ranged from 4 to 49 × 103 cells L−1 and were dominated by dinoflagellates such as Perdinium, Protoperidinium, Dynophysis, Gyrodinium, Gymnodinium and Torodinium species while diatoms (Navicula) were found only in colder polar waters (S5 and 6). Flowcytometry data showed the predominance of Synechococcus sp. and its abundance varied from 0.8 × 105 cells L−1 (S5) to 4.3 × 105 cells L−1 (S4). The distribution of Synechococcus was positively correlated to nitrate (r = 0.838) and chl a (r = 0.915) while phytoplankton abundance had no correlation with chl a or nitrate. A weak positive linear relation between Synechococcus and TSM suggests that melting of glaciers and influx of land run-off may be playing some role in increasing the picoplankton load in these waters. The predominance of mixotrophic dinoflagellates alongwith ciliates like Strombidium in these waters suggests that grazing of picoplankton as well as bacteria might fuel their carbon demand. Our data reflected post-spring bloom conditions wherein Synechococcus were the dominant primary producers and microbial loop might play an important role in sustaining the mixotroph population. |
format |
Article in Journal/Newspaper |
title |
Mixotrophic plankton and Synechococcus distribution in waters around Svalbard, Norway during June 2019 |
title_short |
Mixotrophic plankton and Synechococcus distribution in waters around Svalbard, Norway during June 2019 |
title_full |
Mixotrophic plankton and Synechococcus distribution in waters around Svalbard, Norway during June 2019 |
title_fullStr |
Mixotrophic plankton and Synechococcus distribution in waters around Svalbard, Norway during June 2019 |
title_full_unstemmed |
Mixotrophic plankton and Synechococcus distribution in waters around Svalbard, Norway during June 2019 |
title_sort |
mixotrophic plankton and synechococcus distribution in waters around svalbard, norway during june 2019 |
publishDate |
2021 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16888 http://id.nii.ac.jp/1291/00016757/ |
long_lat |
ENVELOPE(14.226,14.226,77.662,77.662) ENVELOPE(11.010,11.010,79.569,79.569) ENVELOPE(15.904,15.904,77.016,77.016) |
geographic |
Arctic Svalbard Barents Sea Norway Bellsund Magdalenefjorden Gnålodden |
geographic_facet |
Arctic Svalbard Barents Sea Norway Bellsund Magdalenefjorden Gnålodden |
genre |
Arctic Barents Sea Bellsund Magdalenefjord* Phytoplankton Polar Science Polar Science Storfjorden Svalbard |
genre_facet |
Arctic Barents Sea Bellsund Magdalenefjord* Phytoplankton Polar Science Polar Science Storfjorden Svalbard |
op_relation |
https://doi.org/10.1016/j.polar.2021.100697 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16888 http://id.nii.ac.jp/1291/00016757/ Polar Science, 30, 100697(2021-12) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2021.100697 |
container_title |
Polar Science |
container_volume |
30 |
container_start_page |
100697 |
_version_ |
1766343217708531712 |