Spatial and seasonal variations of dinoflagellates and ciliates in the Kongsfjorden, Svalbard
Abstract Abundance and assemblages of dinoflagellates and ciliates were studied in water samples collected from three different depths at five locations in the Kongsfjorden, during summer (June 14–21, 2011) and fall (September 15–27, 2012). Generally, athecate dinoflagellates were ubiquitously domin...
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crwiley:10.1111/maec.12588 2023-12-03T10:25:27+01:00 Spatial and seasonal variations of dinoflagellates and ciliates in the Kongsfjorden, Svalbard Bhaskar, Jane Theophline Parli, Bhaskar Venkateswaran Tripathy, Sarat Chandra 2020 http://dx.doi.org/10.1111/maec.12588 https://onlinelibrary.wiley.com/doi/pdf/10.1111/maec.12588 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/maec.12588 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Marine Ecology volume 41, issue 3, page 1-12 ISSN 0173-9565 1439-0485 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2020 crwiley https://doi.org/10.1111/maec.12588 2023-11-09T14:30:02Z Abstract Abundance and assemblages of dinoflagellates and ciliates were studied in water samples collected from three different depths at five locations in the Kongsfjorden, during summer (June 14–21, 2011) and fall (September 15–27, 2012). Generally, athecate dinoflagellates were ubiquitously dominant during both seasons. Surface dinoflagellates abundance ranged from 1.87 × 10 3 cells/L (KF1) to 11.62 × 10 3 cells/L (KF4) and column integrated abundance ranged from 20.3 × 10 6 cells/m 2 (KF1) to 126 × 10 6 cells/m 2 (KF2) during summer. Dinoflagellate abundance was relatively lower during fall ranging from 0.02 × 10 3 cells/L (KF5) to 0.66 × 10 3 cells/L (KF3) at surface, and correspondingly, a low column integrated abundance ranging from 2.34 × 10 6 cells/m 2 (KF5) to 19.1 × 10 6 cells/m 2 (KF1) was observed. Amphidinium sp., Gyrodinium fusiforme , Gyrodinium estuarile dominated during summer, while Gymnodinium sp. was dominant during fall. Among ciliates, aloricate ciliates were more dominant than loricates. Ciliates at surface ranged from as low as 0.069 × 10 3 cells/L (KF1) to 3.69 × 10 3 cells/L (KF4) during summer. Ciliate abundance increased with depth (up to 20 m). Strombidium spp. (55.28%) and Mesodinium rubrum (36.66%) were dominant during summer. Among the loricates and the aloricates, Strombidium spp. (85.72%) and Tintinnid spp. (92.15%) dominated in fall. The presence of dominant aloricates with characteristic cleptochloroplasts reflected high grazing activity in these waters during both seasons. Diversity study indicates that the dinoflagellates and ciliates are well represented during both seasons. Statistical analyses of the dinoflagellates and ciliates with hydrographic data do not show dominant role of any hydrographical parameters on their diversity, and the same is discussed vis‐à‐vis Atlantification of the fjord. Article in Journal/Newspaper Kongsfjord* Kongsfjorden Svalbard Wiley Online Library (via Crossref) Svalbard Marine Ecology 41 3 1 12 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Bhaskar, Jane Theophline Parli, Bhaskar Venkateswaran Tripathy, Sarat Chandra Spatial and seasonal variations of dinoflagellates and ciliates in the Kongsfjorden, Svalbard |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract Abundance and assemblages of dinoflagellates and ciliates were studied in water samples collected from three different depths at five locations in the Kongsfjorden, during summer (June 14–21, 2011) and fall (September 15–27, 2012). Generally, athecate dinoflagellates were ubiquitously dominant during both seasons. Surface dinoflagellates abundance ranged from 1.87 × 10 3 cells/L (KF1) to 11.62 × 10 3 cells/L (KF4) and column integrated abundance ranged from 20.3 × 10 6 cells/m 2 (KF1) to 126 × 10 6 cells/m 2 (KF2) during summer. Dinoflagellate abundance was relatively lower during fall ranging from 0.02 × 10 3 cells/L (KF5) to 0.66 × 10 3 cells/L (KF3) at surface, and correspondingly, a low column integrated abundance ranging from 2.34 × 10 6 cells/m 2 (KF5) to 19.1 × 10 6 cells/m 2 (KF1) was observed. Amphidinium sp., Gyrodinium fusiforme , Gyrodinium estuarile dominated during summer, while Gymnodinium sp. was dominant during fall. Among ciliates, aloricate ciliates were more dominant than loricates. Ciliates at surface ranged from as low as 0.069 × 10 3 cells/L (KF1) to 3.69 × 10 3 cells/L (KF4) during summer. Ciliate abundance increased with depth (up to 20 m). Strombidium spp. (55.28%) and Mesodinium rubrum (36.66%) were dominant during summer. Among the loricates and the aloricates, Strombidium spp. (85.72%) and Tintinnid spp. (92.15%) dominated in fall. The presence of dominant aloricates with characteristic cleptochloroplasts reflected high grazing activity in these waters during both seasons. Diversity study indicates that the dinoflagellates and ciliates are well represented during both seasons. Statistical analyses of the dinoflagellates and ciliates with hydrographic data do not show dominant role of any hydrographical parameters on their diversity, and the same is discussed vis‐à‐vis Atlantification of the fjord. |
format |
Article in Journal/Newspaper |
author |
Bhaskar, Jane Theophline Parli, Bhaskar Venkateswaran Tripathy, Sarat Chandra |
author_facet |
Bhaskar, Jane Theophline Parli, Bhaskar Venkateswaran Tripathy, Sarat Chandra |
author_sort |
Bhaskar, Jane Theophline |
title |
Spatial and seasonal variations of dinoflagellates and ciliates in the Kongsfjorden, Svalbard |
title_short |
Spatial and seasonal variations of dinoflagellates and ciliates in the Kongsfjorden, Svalbard |
title_full |
Spatial and seasonal variations of dinoflagellates and ciliates in the Kongsfjorden, Svalbard |
title_fullStr |
Spatial and seasonal variations of dinoflagellates and ciliates in the Kongsfjorden, Svalbard |
title_full_unstemmed |
Spatial and seasonal variations of dinoflagellates and ciliates in the Kongsfjorden, Svalbard |
title_sort |
spatial and seasonal variations of dinoflagellates and ciliates in the kongsfjorden, svalbard |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/maec.12588 https://onlinelibrary.wiley.com/doi/pdf/10.1111/maec.12588 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/maec.12588 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Kongsfjord* Kongsfjorden Svalbard |
genre_facet |
Kongsfjord* Kongsfjorden Svalbard |
op_source |
Marine Ecology volume 41, issue 3, page 1-12 ISSN 0173-9565 1439-0485 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/maec.12588 |
container_title |
Marine Ecology |
container_volume |
41 |
container_issue |
3 |
container_start_page |
1 |
op_container_end_page |
12 |
_version_ |
1784274340032806912 |