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Thunell, Robert C (1978): Distribution of planktonic foraminifera in surface sediments of the Mediterranean Sea [dataset]. PANGAEA,, Supplement to: Thunell, RC (1978): Distribution of recent planktonic foraminifera in surface sediments of the Mediterranean Sea. Marine Micropaleontology, 3(2), 147-173,

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The Mediterranean Sea is a partillay isolated ocean where excess evaporation over precipitation results in large east to west gradients in temperature and salinity. Recent planktonic foraminiferal distributions have been examined in 66 surface sediment samples from the Mediterranean Sea. In addition to mapping the frequency distribution of 16 species, the faunal data has been subjected to cluster analysis, factor analysis and species diversity analysis. The clustering of species yields assemblages that are clearly temperature related. A warm assemblage contains both tropical and subtropical elements, while the cool assemblage can be subdivided into cool-subtropical, transitional and polar-subpolar groupings. Factor analysis is used to delineate the geographic distribution of four faunal assemblages. Factor 1 is a tropical-subtropical assemblage dominated by Globigerinoiden ruber. It has its highest values in the warmer eastern basin. Transitional species (Globorotalia inflata and Globigerina bulloides) dominate factor 2 with highest values occurring in the cooler western basin. Factor 3 reflects the distribution of Neogloboquadrina dutertrei and is considered to be salinity dependent. Subpolar species dominate factor 4 (Neoglobuquadrina pachyderma and G. bulloides), with highest values occurring in the northern part of the western basin where cold bottom water is presently being formed. The Shannon-Weiner index of species diversity shows that high diversity exists over much of the western basin and immediately east of the Strait of Sicily. This region is marked by equitable environmental conditions and relatively even distribution of individuals among the species. Conversely, in areas where temperature and salinity values are more extreme, diversity values are lower and the assemblages are dominated by one or two species.
Barcelona Coast; Izmit Bay; Taranto Mare Piccolo; Thermaikos Gulf
Fourth Framework Programme (FP4), grant/award no. MAS3950043: Climatic Variability of the Mediterranean Paleo-circulation
Sixth Framework Programme (FP6), grant/award no. 36949: Southern European Seas: Assessing and Modelling Ecosystem Changes
Median Latitude: 37.248242 * Median Longitude: 17.249056 * South-bound Latitude: 31.820000 * West-bound Longitude: -4.250000 * North-bound Latitude: 41.967000 * East-bound Longitude: 35.050000
Date/Time Start: 1956-07-01T00:00:00 * Date/Time End: 1965-08-06T00:00:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
ATL4647 * Latitude: 37.150000 * Longitude: 23.630000 * Elevation: -366.0 m * Campaign: CLIVAMPcruises * Basis: Ship of opportunity * Method/Device: Piston corer (PC) * Comment: top Pcore/ATL4647
ATL4648 * Latitude: 38.930000 * Longitude: 24.300000 * Elevation: -338.0 m * Campaign: CLIVAMPcruises * Basis: Ship of opportunity * Method/Device: Piston corer (PC) * Comment: top Pcore/ATL4648
ATL4650 * Latitude: 40.230000 * Longitude: 24.700000 * Elevation: -859.0 m * Campaign: CLIVAMPcruises * Basis: Ship of opportunity * Method/Device: Piston corer (PC) * Comment: top Pcore/ATL4650
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4Elevation of eventElevationm
5DEPTH, sediment/rockDepth sedmGeocode
6Globorotalia inflataG. inflata%Thunell, Robert CCounting >250 µm fraction
7Globorotalia truncatulinoidesG. truncatulinoides%Thunell, Robert CCounting >250 µm fraction
8Globorotalia truncatulinoides sinistralG. truncatulinoides s%Thunell, Robert CCounting >250 µm fraction
9Globorotalia scitulaG. scitula%Thunell, Robert CCounting >250 µm fraction
10Globigerinoides ruberG. ruber%Thunell, Robert CCounting >250 µm fraction
11Globigerinoides sacculiferG. sacculifer%Thunell, Robert CCounting >250 µm fraction
12Globigerinoides conglobatusG. conglobatus%Thunell, Robert CCounting >250 µm fraction
13Globoturborotalita tenellaG. tenella%Thunell, Robert CCounting >250 µm fraction
14Globigerina bulloidesG. bulloides%Thunell, Robert CCounting >250 µm fraction
15Globigerina calidaG. calida%Thunell, Robert CCounting >250 µm fraction
16Globigerina falconensisG. falconensis%Thunell, Robert CCounting >250 µm fraction
17Neogloboquadrina pachyderma dextralN. pachyderma d%Thunell, Robert CCounting >250 µm fraction
18Neogloboquadrina pachyderma sinistralN. pachyderma s%Thunell, Robert CCounting >250 µm fraction
19Neogloboquadrina sp.Neogloboquadrina sp.%Thunell, Robert CCounting >250 µm fraction
20Turborotalita quinquelobaT. quinqueloba%Thunell, Robert CCounting >250 µm fraction
21Globoturborotalita rubescensG. rubescens%Thunell, Robert CCounting >250 µm fraction
22Globigerina digitataG. digitata%Thunell, Robert CCounting >250 µm fraction
23Globigerinita glutinataG. glutinata%Thunell, Robert CCounting >250 µm fraction
24Globigerinella aequilateralisG. aequilateralis%Thunell, Robert CCounting >250 µm fraction
25Hastigerina pelagicaH. pelagica%Thunell, Robert CCounting >250 µm fraction
26Neogloboquadrina dutertreiN. dutertrei%Thunell, Robert CCounting >250 µm fraction
27Orbulina universaO. universa%Thunell, Robert CCounting >250 µm fraction
28Sprudts, warm water speciesSPRUDTS%Thunell, Robert CCounting >250 µm fraction
1518 data points

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