Abstract:
Results of sediment trap analysis conducted by British Antarctic Survey, University of Edinburgh and University of Bristol. Abundances and biovolume of intact phytoplankton and microzooplankton cells observed in sediment trap samples are presented. Data from two sediment traps deployed in the Scotia Sea, Southern Ocean, are presented (shallow=400 m, and deep = 2000 m). 4 samples were analysed from each, two in January/February 2018, and two in December 2018. Each sediment trap sample was split into multiple fractions to facilitate this and other analyses. Data facilitate the understanding of the magnitude and drivers of particulate fluxes in the Scotia Sea, Southern Ocean.
Work funded by NC-ALI funding to the British Antarctic Survey Ecosystems programme.
Keywords:
Phytoplankton, Plankton biovolume, Plankton composition, Sediment Trap
Belcher, A., Wootton, M., & Manno, C. (2023). Sediment trap plankton community composition from the Scotia Sea in 2018 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/6a5a80f9-4c30-4ad6-a5be-ccba53f8a464
| Access Constraints: | No restrictions apply. |
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| Use Constraints: | Data are supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
| Creation Date: | 2023-07-13 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK PDC |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Dr Anna Belcher |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Ms Marianne Wootton |
| Role(s) | Investigator |
| Organisation | Marine Biological Association |
| Name | Dr Clara Manno |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Parent Dataset: | N/A |
| Reference: | Belcher, A., Henley, S. F., Hendry, K., Wootton, M., Friberg, L., Dallman, U., Wang, T., Coath, C., and Manno, C.: Seasonal cycles of biogeochemical fluxes in the Scotia Sea, Southern Ocean: a stable isotope approach, Biogeosciences, 20, 3573-3591, https://doi.org/10.5194/bg-20-3573-2023, 2023. | |
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| Quality: | We note that the mooring itself experienced periods of higher flow in June 2018 and late August/September 2018 and thus particle collection may be biased at this time. Only complete cells were enumerated to avoid over counting of fragmented specimens. For the larger, easily identifiable cells, the whole chamber was observed; for smaller cells a proportion of the chamber was examined depending upon cell abundance (at least 500 cells were counted). Biovolume calculations were made based on the metrics of 10 randomly selected specimens. Biovolumes of microzooplankton were not measured. |
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| Lineage: | Two sediment traps (McLane PARFLUX, shallow=400 m, deep=2000 m) were deployed on a long term mooring station (P3-Scotia Sea Open Ocean Observatory (SCOOBIES: https://www.bas.ac.uk/project/scoobies/), located at: -52.8036, -40.1593 at 3748 m water depth. Sediment traps were deployed in January 2018 aboard research cruise JR17002 and recovered in January 2019 aboard research cruise DY098. Each sediment trap collected 14 samples, open for periods of 7-31 days, which, on return to the laboratory were split into multiple aliquots for subsequent analysis. Splits were taken for analysis of the phytoplankton and microzooplankton community composition from 8 samples, 4 from each sediment trap. Phytoplankton and microzooplankton enumeration was carried out under the light microscope, and the size of 10 random individuals for each species measured for biovolume calculations of phytoplankton only. Cells were determined as "full" or alive at time of collection if they possessed chloroplasts/plastids, pigment, a nucleus or, in the case of Pronoctiluca, a distinct accumulation body; cells lacking these internal features were deemed as "empty", or dead at time of collection. For full details of laboratory analyses of these splits, see Belcher et al. in review. | |
| Temporal Coverage: | |
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| Start Date | 2018-01-25 |
| End Date | 2018-12-31 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -52.8036 |
| Northernmost | -52.8036 |
| Longitude | |
| Westernmost | -40.1593 |
| Easternmost | -40.1593 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | 400 m |
| Max Depth | 2000 m |
| Location: | |
| Location | Southern Ocean |
| Detailed Location | Scotia Sea |
| Data Collection: | Sample collection: McLane PARFLUX Sediment Trap Sample splitting: McLane Sample Splitter Sample analysis: Light Microscope |
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| Data Storage: | Data are provided as 3 .csv files and 2 .txt file: plankton_header_descriptions.csv, plankton_data.csv, biovolume_data.csv, readme.txt,xcsv_header_1760.txt |
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