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Abrantes, Fatima F (2016): (Table S1) Diatom abundance in coastal upwelling systems. PANGAEA, https://doi.org/10.1594/PANGAEA.859881, Supplement to: Abrantes, Fatima F; Cermeño, Pedro; Lopes, Cristina; Romero, Oscar E; Matos, Lelia; van Iperen, J; Rufino, Marta M; Magalhães, Vitor H (2016): Diatoms Si uptake capacity drives carbon export in coastal upwelling systems. Biogeosciences, 13(14), 4099-4109, https://doi.org/10.5194/bg-13-4099-2016

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Abstract:
Coastal upwelling systems account for approximately half of global ocean primary production and contribute disproportionately to biologically driven carbon sequestration. Diatoms, silica-precipitating microalgae, constitute the dominant phytoplankton in these productive regions, and their abundance and assemblage composition in the sedimentary record is considered one of the best proxies for primary production. The study of the sedimentary diatom abundance (SDA) and total organic carbon content (TOC) in the five most important coastal upwelling systems of the modern ocean (Iberia-Canary, Benguela, Peru-Humboldt, California and Somalia-Oman) reveals a global-scale positive relationship between diatom production and organic carbon burial. The analysis of SDA in conjunction with environmental variables of coastal upwelling systems such as upwelling strength, satellite-derived net primary production and surface water nutrient concentrations shows different relations between SDA and primary production on the regional scale. At the global-scale, SDA appears modulated by the capacity of diatoms to take up silicic acid, which ultimately sets an upper limit to global export production in these ocean regions.
Coverage:
Median Latitude: 9.536113 * Median Longitude: -37.444968 * South-bound Latitude: -50.650000 * West-bound Longitude: -132.667000 * North-bound Latitude: 49.400000 * East-bound Longitude: 61.685000
Date/Time Start: 1967-06-01T00:00:00 * Date/Time End: 2006-09-02T11:14:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
Event(s):
116-VB24 * Latitude: 41.580000 * Longitude: -8.870000 * Date/Time: 1975-10-15T00:00:00 * Elevation: -40.0 m * Campaign: VIABOA * Basis: Almeida Carvalho * Device: Core (CORE)
120-VB28 * Latitude: 41.580000 * Longitude: -9.020000 * Date/Time: 1975-10-15T00:00:00 * Elevation: -85.0 m * Campaign: VIABOA * Basis: Almeida Carvalho * Device: Core (CORE)
123-VB31 * Latitude: 41.590000 * Longitude: -9.160000 * Date/Time: 1975-10-15T00:00:00 * Elevation: -100.0 m * Campaign: VIABOA * Basis: Almeida Carvalho * Device: Core (CORE)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEventAbrantes, Fatima F
2Sample IDSample IDAbrantes, Fatima F
3Date/Time of eventDate/TimeAbrantes, Fatima F
4Latitude of eventLatitudeAbrantes, Fatima F
5Longitude of eventLongitudeAbrantes, Fatima F
6Elevation of eventElevationmAbrantes, Fatima F
7DEPTH, sediment/rockDepthmAbrantes, Fatima FGeocode
8Area/localityAreaAbrantes, Fatima F
9Diatoms, total valve abundance per unit dry sediment massTDVA106 #/gAbrantes, Fatima F
10Method commentMethod commAbrantes, Fatima Fauthor/counting method
11Basis of eventBasisAbrantes, Fatima F
12Campaign of eventCampaignAbrantes, Fatima F
Size:
2232 data points

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