Seasonal Variability in the Zooplankton Community Structure in a Sub-Arctic Fjord as Revealed by Morphological and Molecular Approaches
Phyto- and zooplankton in Arctic and sub-Arctic seas show very strong seasonal changes in diversity and biomass. Here we document the seasonal variability in the mesozooplankton community structure in a sub-Arctic fjord in Northern Norway based on monthly sampling between November 2018 and February...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2021-08-01
|
| Series: | Frontiers in Marine Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2021.705042/full |
| _version_ | 1831588182995501056 |
|---|---|
| author | Estelle Coguiec Elizaveta A. Ershova Elizaveta A. Ershova Malin Daase Tobias R. Vonnahme Owen S. Wangensteen Rolf Gradinger Kim Præbel Kim Præbel Jørgen Berge Jørgen Berge Jørgen Berge |
| author_facet | Estelle Coguiec Elizaveta A. Ershova Elizaveta A. Ershova Malin Daase Tobias R. Vonnahme Owen S. Wangensteen Rolf Gradinger Kim Præbel Kim Præbel Jørgen Berge Jørgen Berge Jørgen Berge |
| author_sort | Estelle Coguiec |
| collection | DOAJ |
| description | Phyto- and zooplankton in Arctic and sub-Arctic seas show very strong seasonal changes in diversity and biomass. Here we document the seasonal variability in the mesozooplankton community structure in a sub-Arctic fjord in Northern Norway based on monthly sampling between November 2018 and February 2020. We combined traditional morphological zooplankton identification with DNA metabarcoding of a 313 base pair fragment of the COI gene. This approach allowed us to provide the most detailed mesozooplankton species list known for this region across an entire year, including both holo- and meroplankton. The zooplankton community was dominated by small copepods throughout the sampling period both in terms of abundance and relative sequence counts. However, meroplankton was the most diverse group, especially within the phylum polychaeta. We identified four distinct periods based on the seasonal analysis of the zooplankton community composition. The pre-spring bloom period (February–March) was characterized by low abundance and biomass of zooplankton. The spring bloom (April) was characterized by the presence of Calanus young stages, cirripedia and krill eggs. The spring-summer period (May–August) was characterized by a succession of meroplankton and a relatively high abundance of copepods of the genus Calanus spp. Finally, the autumn-winter period (September–December) was characterized by a high copepod diversity and a peak in abundance of small copepods (e.g., Oithona similis, Acartia longiremis, Pseudocalanus acuspes, Pseudocalanus elongatus, Pseudocalanus moultoni, Pseudocalanus minutus). During this period, we also observed an influx of boreal warm-water species which were notably absent during the rest of the year. Both the traditional community analysis and metabarcoding were highly complementary and with a few exceptions showed similar trends in the seasonal changes of the zooplankton community structure. |
| first_indexed | 2024-12-17T22:09:37Z |
| format | Article |
| id | doaj.art-a00fcf0dcf8d4221bf8e7845f1cd7308 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-12-17T22:09:37Z |
| publishDate | 2021-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-a00fcf0dcf8d4221bf8e7845f1cd73082022-12-21T21:30:47ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452021-08-01810.3389/fmars.2021.705042705042Seasonal Variability in the Zooplankton Community Structure in a Sub-Arctic Fjord as Revealed by Morphological and Molecular ApproachesEstelle Coguiec0Elizaveta A. Ershova1Elizaveta A. Ershova2Malin Daase3Tobias R. Vonnahme4Owen S. Wangensteen5Rolf Gradinger6Kim Præbel7Kim Præbel8Jørgen Berge9Jørgen Berge10Jørgen Berge11Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, NorwayDepartment of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, NorwayInstitute of Marine Research, Bergen, NorwayDepartment of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, NorwayDepartment of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, NorwayNorwegian College of Fishery Science, UiT The Arctic University of Norway, Tromsø, NorwayDepartment of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, NorwayNorwegian College of Fishery Science, UiT The Arctic University of Norway, Tromsø, NorwayFaculty of Applied Ecology, Agricultural Sciences and Biotechnology, Inland Norway University of Applied Sciences, Elverum, NorwayDepartment of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, NorwayDepartment of Arctic Biology, The University Centre in Svalbard, Longyearbyen, NorwayCentre for Autonomous Marine Operations and System, Department of Biology, Norwegian University of Science and Technology, Trondheim, NorwayPhyto- and zooplankton in Arctic and sub-Arctic seas show very strong seasonal changes in diversity and biomass. Here we document the seasonal variability in the mesozooplankton community structure in a sub-Arctic fjord in Northern Norway based on monthly sampling between November 2018 and February 2020. We combined traditional morphological zooplankton identification with DNA metabarcoding of a 313 base pair fragment of the COI gene. This approach allowed us to provide the most detailed mesozooplankton species list known for this region across an entire year, including both holo- and meroplankton. The zooplankton community was dominated by small copepods throughout the sampling period both in terms of abundance and relative sequence counts. However, meroplankton was the most diverse group, especially within the phylum polychaeta. We identified four distinct periods based on the seasonal analysis of the zooplankton community composition. The pre-spring bloom period (February–March) was characterized by low abundance and biomass of zooplankton. The spring bloom (April) was characterized by the presence of Calanus young stages, cirripedia and krill eggs. The spring-summer period (May–August) was characterized by a succession of meroplankton and a relatively high abundance of copepods of the genus Calanus spp. Finally, the autumn-winter period (September–December) was characterized by a high copepod diversity and a peak in abundance of small copepods (e.g., Oithona similis, Acartia longiremis, Pseudocalanus acuspes, Pseudocalanus elongatus, Pseudocalanus moultoni, Pseudocalanus minutus). During this period, we also observed an influx of boreal warm-water species which were notably absent during the rest of the year. Both the traditional community analysis and metabarcoding were highly complementary and with a few exceptions showed similar trends in the seasonal changes of the zooplankton community structure.https://www.frontiersin.org/articles/10.3389/fmars.2021.705042/fullmetabarcodingsub-arcticseasonal community dynamicszooplanktonmeroplanktoncopepods |
| spellingShingle | Estelle Coguiec Elizaveta A. Ershova Elizaveta A. Ershova Malin Daase Tobias R. Vonnahme Owen S. Wangensteen Rolf Gradinger Kim Præbel Kim Præbel Jørgen Berge Jørgen Berge Jørgen Berge Seasonal Variability in the Zooplankton Community Structure in a Sub-Arctic Fjord as Revealed by Morphological and Molecular Approaches Frontiers in Marine Science metabarcoding sub-arctic seasonal community dynamics zooplankton meroplankton copepods |
| title | Seasonal Variability in the Zooplankton Community Structure in a Sub-Arctic Fjord as Revealed by Morphological and Molecular Approaches |
| title_full | Seasonal Variability in the Zooplankton Community Structure in a Sub-Arctic Fjord as Revealed by Morphological and Molecular Approaches |
| title_fullStr | Seasonal Variability in the Zooplankton Community Structure in a Sub-Arctic Fjord as Revealed by Morphological and Molecular Approaches |
| title_full_unstemmed | Seasonal Variability in the Zooplankton Community Structure in a Sub-Arctic Fjord as Revealed by Morphological and Molecular Approaches |
| title_short | Seasonal Variability in the Zooplankton Community Structure in a Sub-Arctic Fjord as Revealed by Morphological and Molecular Approaches |
| title_sort | seasonal variability in the zooplankton community structure in a sub arctic fjord as revealed by morphological and molecular approaches |
| topic | metabarcoding sub-arctic seasonal community dynamics zooplankton meroplankton copepods |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2021.705042/full |
| work_keys_str_mv | AT estellecoguiec seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT elizavetaaershova seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT elizavetaaershova seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT malindaase seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT tobiasrvonnahme seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT owenswangensteen seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT rolfgradinger seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT kimpræbel seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT kimpræbel seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT jørgenberge seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT jørgenberge seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches AT jørgenberge seasonalvariabilityinthezooplanktoncommunitystructureinasubarcticfjordasrevealedbymorphologicalandmolecularapproaches |