Romero, Oscar E (2022): Intra- and interannual patterns of diatom population occurrence in the Mauritanian coastal upwelling [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.948026
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Abstract:
Qualitative and quantitative analyses of the diatom community were carried out on permanent slides of acid cleaned material (Mountex® mounting medium) at x1000 magnifications by using a Zeiss®Axioscop with phase-contrast illumination (MARUM). Depending on the valve abundance in each sample, several traverses across each permanent slide were examined. The census and definition of counting units for valves follows Schrader and Gersonde (1978). Total amount of counted valves per slide ranged between ca. 350 and 700. Two cover slips per sample were scanned in this way. Census of valves in replicate slides indicate that the analytical error of valve concentration and relative abundance estimates is ≤10 %. The resulting counts yielded absolute and relative abundance of individual diatom taxa as well as daily diatom fluxes (valves m-2 d-1), calculated according to Sancetta and Calvert (1988), as follows: Diatom Flux = [N] x [A/a] x [V] x [Split] [days] x [D] where, [N] number of valves in an known area [a], as a fraction of the total area of a petri dish [A] and the dilution volume [V] in ml. This value is multiplied by the sample split [Split], representing the fraction of total material in the trap, and then divided by the number of [days] of sample deployment and the sediment trap collection area [D].
Keyword(s):
Related to:
Romero, Oscar E; Ramondenc, Simon (2022): A 17-year time-series of diatom populations' flux and composition in the Mauritanian coastal upwelling. Frontiers in Marine Science, 9, 1006345, https://doi.org/10.3389/fmars.2022.1006345
Further details:
Sancetta, Constance A; Calvert, Stephen E (1988): The annual cycle of sedimentation in Saanich inlet, British Columbia: implications for the interpretation of diatom fossil assemblages. Deep Sea Research Part A. Oceanographic Research Papers, 35(1), 71-90, https://doi.org/10.1016/0198-0149(88)90058-1
Schrader, Hans-Jürgen; Gersonde, Rainer (1978): Diatoms and silicoflagellates. in: Micropaleontological counting methods and techniques – an exercise on an eight meter section of the Lower Pliocene of Capo Rosello, Sicily, edited by: Zachariasse, W. J., Riedel, W. R., Sanfilippo, A., Schmidt, R. R., Brolsma, M. J., Schrader, H., Ger sonde, R., Drooger, M. M., and Broekman, J. A., Utrecht Micropaleontological Bulletin, Utrecht, 17, 129-176
Project(s):
Coverage:
Median Latitude: 20.788094 * Median Longitude: -18.723478 * South-bound Latitude: 20.741667 * West-bound Longitude: -18.756667 * North-bound Latitude: 20.883333 * East-bound Longitude: -18.698300
Date/Time Start: 2003-06-05T00:00:00 * Date/Time End: 2020-03-30T00:00:00
Minimum DEPTH, water: 1249 m * Maximum DEPTH, water: 1364 m
Event(s):
CBeu1 (Cbi-1) * Latitude: 20.750000 * Longitude: -18.700000 * Date/Time Start: 2003-06-05T00:00:00 * Date/Time End: 2004-04-05T00:00:00 * Elevation: -2714.0 m * Location: Cape Blanc, Mauritania * Method/Device: Mooring (MOOR) * Comment: The mooring was equipped with a sediment trap.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Romero, Oscar E | |||
| 2 | Latitude of event | Latitude | Romero, Oscar E | |||
| 3 | Longitude of event | Longitude | Romero, Oscar E | |||
| 4 | Elevation of event | Elevation | m | Romero, Oscar E | ||
| 5 | DEPTH, water | Depth water | m | Romero, Oscar E | Geocode | |
| 6 | Sample code/label | Sample label | Romero, Oscar E | GeoB# | ||
| 7 | Cruise/expedition | Expedition | Romero, Oscar E | |||
| 8 | Date/time start | Date/time start | Romero, Oscar E | open | ||
| 9 | Date/time end | Date/time end | Romero, Oscar E | close | ||
| 10 | Diatoms, total, cell, flux | Diatom cell flux | #/m2/day | Romero, Oscar E | ||
| 11 | Diatoms, benthic | Diatom benthic | % | Romero, Oscar E | Calculated, see reference(s) | |
| 12 | Diatoms, coastal upwelling | Diatom coast upw | % | Romero, Oscar E | Calculated, see reference(s) | |
| 13 | Diatoms, coastal planktic | Diatom coast plank | % | Romero, Oscar E | Calculated, see reference(s) | |
| 14 | Diatoms, open-ocean | Diatom open oce | % | Romero, Oscar E | Calculated, see reference(s) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2892 data points
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