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Elshanawany, Rehab; Zonneveld, Karin A F; Ibrahim, Mohammed I; Kholeif, S E A (2010): Individual dinoflagellate cysts species of surface sediment samples from the Mediterranean Sea. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.746639 (unpublished dataset), Supplement to: Elshanawany, R et al. (2010): Distribution patterns of recent organic-walled dinoflagellate cysts in relation to environmental parameters in the Mediterranean Sea. Palynology, 34(2), 233-260, https://doi.org/10.1080/01916121003711665

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Abstract:
To determine the relationship between the spatial dinoflagellate cyst distribution and oceanic environmental conditions, 34 surface sediments from the Eastern and Western Mediterranean Sea have been investigated for their dinoflagellate cyst content. Multivariate ordination analyses identified sea-surface temperature, chlorophyll-a , nitrate concentration, salinity, and bottom oxygen concentration as the main factors affecting dinoflagellate cyst distribution in the region. Based on the relative abundance data, two associations can be distinguished that can be linked with major oceanographic settings. (1) An offshore eastern Mediterranean regime where surface sediments are characterized by oligotrophic, warm, saline surface water, and high oxygen bottom water concentrations (Impagidinium species, Nematosphaeropsis labyrinthus, Pyxidinopsis reticulata and Operculodinium israelianum). Based on the absolute abundance, temperature is positively related to the cyst accumulation of Operculodinium israelianum. Temperature does not form a causal factor influencing the accumulation rate of the other species in this association. Impagidinium species and Nematosphaeropsis labyrinthus show a positive relationship between cyst accumulation and nitrate availability in the upper waters. (2) Species of association 2 have highest relative abundances in the Western Mediterranean Sea, Strait of Sicily/NW Ionian Sea, and/or the distal ends of the Po/Nile/Rhône River plumes. At these stations, surface waters are characterized by (relative to the other regime) higher productivity associated with lower sea-surface temperature, salinity, and lower bottom water oxygen concentrations (Selenopemphix nephroides, Echinidinium spp., Selenopemphix quanta, Quinquecuspis concreta, Brigantedinium spp. and Lingulodinium machaerophorum). Based on both the absolute and relative abundances, Selenopemphix nephroides is suggested to be a suitable indicator to trace changes in the trophic state of the upper waters. The distribution of Lingulodinium machaerophorum is related to the presence of river-influenced surface waters, notably the Nile River. We suggest that this species might form a suitable marker to trace past variations in river discharge, notably from the Nile.
Coverage:
Median Latitude: 35.737778 * Median Longitude: 21.559630 * South-bound Latitude: 32.321500 * West-bound Longitude: -1.949833 * North-bound Latitude: 42.461500 * East-bound Longitude: 34.649200
Date/Time Start: 1998-01-22T02:36:00 * Date/Time End: 2001-11-26T21:35:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
Event(s):
GeoB5845-1 * Latitude: 32.321500 * Longitude: 34.165000 * Date/Time: 1999-04-05T06:30:00 * Elevation: -1284.0 m * Recovery: 0.42 m * Location: Eastern Mediterranean Sea * Campaign: M44/3 * Basis: Meteor (1986) * Device: MultiCorer (MUC) * Comment: 2 big tubes filled
GeoB5847-1 * Latitude: 32.820500 * Longitude: 34.164000 * Date/Time: 1999-04-06T08:48:00 * Elevation: -1532.0 m * Recovery: 0.4 m * Location: Eastern Mediterranean Sea * Campaign: M44/3 * Basis: Meteor (1986) * Device: MultiCorer (MUC) * Comment: 3 big tubes filled
M40/4_MUC65 * Latitude: 36.145833 * Longitude: 25.563500 * Date/Time: 1998-01-22T02:36:00 * Elevation: -828.0 m * Campaign: M40/4 * Basis: Meteor (1986) * Device: MultiCorer (MUC)
Comment:
The uppermost centimetre (0 - 1 cm) of each core was analysed.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4Elevation of eventElevationm
5DEPTH, sediment/rockDepthmGeocode
6Sample IDSample IDElshanawany, Rehab
7CountsCounts#Elshanawany, Rehab
8CystsCysts#/gElshanawany, Rehab
9Ataxiodinium choaneA. choane#Elshanawany, RehabCounting, palynologyA. choane
10Bitectatodinium spongiumB. spongium#Elshanawany, RehabCounting, palynology
11Bitectatodinium tepikienseB. tepikiense#Elshanawany, RehabCounting, palynology
12Brigantedinium spp.Brigantedinium spp.#Elshanawany, RehabCounting, palynology
13Echinidinium spp.Echinidinium spp.#Elshanawany, RehabCounting, palynology
14Impagidinium aculeatumI. aculeatum#Elshanawany, RehabCounting, palynology
15Impagidinium paradoxumI. paradoxum#Elshanawany, RehabCounting, palynology
16Impagidinium patulumI. patulum#Elshanawany, RehabCounting, palynology
17Impagidinium plicatumI. plicatum#Elshanawany, RehabCounting, palynology
18Impagidinium sphaericumI. sphaericum#Elshanawany, RehabCounting, palynology
19Impagidinium spp.Impagidinium spp.#Elshanawany, RehabCounting, palynology
20Impagidinium strialatumI. strialatum#Elshanawany, RehabCounting, palynology
21Impagidinium velorumI. velorum#Elshanawany, RehabCounting, palynology
22Islandinium minutumI. minutum#Elshanawany, RehabCounting, palynology
23Lingulodinium machaerophorumL. machaerophorum#Elshanawany, RehabCounting, palynology
24Nematosphaeropsis labyrinthusN. labyrinthus#Elshanawany, RehabCounting, palynology
25Operculodinium centrocarpumO. centrocarpum#Elshanawany, RehabCounting, palynology
26Operculodinium israelianumO. israelianum#Elshanawany, RehabCounting, palynology
27Pentapharsodinium daleiP. dalei#Elshanawany, RehabCounting, palynology
28Polysphaeridium zoharyiP. zoharyi#Elshanawany, RehabCounting, palynology
29Protoperidinium americanumP. americanum#Elshanawany, RehabCounting, palynology
30Pyxidinopsis reticulataP. reticulata#Elshanawany, RehabCounting, palynology
31Quinquecuspis concretaQ. concreta#Elshanawany, RehabCounting, palynology
32Selenopemphix nephroidesS. nephroides#Elshanawany, RehabCounting, palynology
33Selenopemphix quantaS. quanta#Elshanawany, RehabCounting, palynology
34Spiniferites mirabilisS. mirabilis#Elshanawany, RehabCounting, palynology
35Spiniferites ramosusS. ramosus#Elshanawany, RehabCounting, palynology
36Spiniferites spp.Spiniferites spp.#Elshanawany, RehabCounting, palynology
37Stelladinium stellatumS. stellatum#Elshanawany, RehabCounting, palynology
38Tectatodinium pellitumT. pellitum#Elshanawany, RehabCounting, palynology
39Trinovantedinium applanatumT. applanatum#Elshanawany, RehabCounting, palynology
40Tuberculodinium vancampoaeT. vancampoae#Elshanawany, RehabCounting, palynology
41Votadinium calvumV. calvum#Elshanawany, RehabCounting, palynology
Size:
1224 data points

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