Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Herb, René (1968): Relative abundances of planktonic foraminifera from surface sediments of the Drake Passage, Southern Ocean (Table 1). PANGAEA, https://doi.org/10.1594/PANGAEA.407401, Supplement to: Herb, R (1968): Recent planktonic foraminifera from sediments of the Drake Passage, Southern Ocean. Ecologae Geologicae Helvetiae, 61(2), 467-480

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX Citation

Abstract:
Based on a qualitative and quantitative evaluation of Recent sediments samples (top 3 cm of cores as well as Petersen grab samples) from the Drake Passage, between South America and Antarctica, the distribution of planktonic foraminifera and their relation to oceanographic conditions was investigated. The Antarctic Convergence - the northern limit of the cold Antarctic Surface Water - is shown to be of major importance in controlling the distributional pattern of planktonic species as well as their total numbers. South of the convergence, Globigerina pachyderma is usually the only species found in the sediment. It occurs with abundances not greater than 6000 per gram dry sediment, and at most stations less than 100 specimens per gram of dry sediment were recovered. At a number of deep-sea stations below 3700 m depth approx. no planktonic foraminifera were found at all. It is most probable, that at least some of these stations are located below the limit of CaCO3 dissolution. North of the Antarctic Convergence planktonic foraminiferal numbers are much higher and range from 1800 to 120000 per gram of dry sediment. Eight species are the major constituents of the population: Globigerina pachyderma, Globigerina bulloides, Globogerina quinqueloba, Globigerina inflata, Globorotalia truncatolinoides, Globorotalia scitula, Globigerinita glutinata and Globigerinita uvula. The widespread occurrence of Globorotalia truncatulinoides, which in the northern hemisphere is usually a subtropical form, is especially noteworthy. Another Globigerina, morphologically similar to G. pachyderma, has been recognized frequently north of the Antarctic Convergence. Globigerina megastoma which has its type area in the Drake Passage, has been found only rarely. Orbulina universa occurs in samples from the areas of higher water temperature around the South American Continent. Globigerina pachyderma is predominantly sinistrally coiled throughout the area investigated, but a slight increase in the percentage of dextrally coiled specimens may be noticed with increasing water temperature, i.e. from south to north.
Coverage:
Median Latitude: -59.126853 * Median Longitude: -63.167128 * South-bound Latitude: -64.900000 * West-bound Longitude: -71.250000 * North-bound Latitude: -52.016700 * East-bound Longitude: -55.566700
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Sample code/labelSample labelHerb, René
LATITUDELatitudeGeocode
LONGITUDELongitudeGeocode
Depth, bathymetricBathy depthmHerb, RenéEchosounder (ECHO)
DEPTH, sediment/rockDepth sedmGeocode
Foraminifera, plankticForam plankt#Herb, René
Globigerina pachydermaG. pachyderma%Herb, RenéCounting 32-500 µm fraction
Globigerina sp.Globigerina sp.%Herb, RenéCounting 32-500 µm fraction
Globigerina quinquelobaG. quinqueloba%Herb, RenéCounting 32-500 µm fraction
10 Globigerina bulloidesG. bulloides%Herb, RenéCounting 32-500 µm fraction
11 Globigerina megastomaG. megastoma%Herb, RenéCounting 32-500 µm fraction
12 Globorotalia inflataG. inflata%Herb, RenéCounting 32-500 µm fraction
13 Globorotalia truncatulinoidesG. truncatulinoides%Herb, RenéCounting 32-500 µm fraction
14 Globorotalia scitulaG. scitula%Herb, RenéCounting 32-500 µm fraction
15 Globigerinita glutinataG. glutinata%Herb, RenéCounting 32-500 µm fraction
16 Globigerinita uvulaG. uvula%Herb, RenéCounting 32-500 µm fraction
17 Orbulina universaO. universa%Herb, RenéCounting 32-500 µm fraction
Size:
504 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Sample label

Latitude

Longitude

Bathy depth [m]

Depth sed [m]

Foram plankt [#]

G. pachyderma [%]

Globigerina sp. [%]

G. quinqueloba [%]
10 
G. bulloides [%]
11 
G. megastoma [%]
12 
G. inflata [%]
13 
G. truncatulinoides [%]
14 
G. scitula [%]
15 
G. glutinata [%]
16 
G. uvula [%]
17 
O. universa [%]
Eltanin 271-64.9000-68.33334120000000000000
Eltanin 299-63.1667-71.250037770000000000000
Eltanin 266-63.0000-67.700036920000000000000
Eltanin 417-62.6667-56.21675000000000000000
Eltanin 136-62.6500-64.03333734011000000000000
Eltanin 261-62.2167-67.9833377105701000000000000
Eltanin 130-61.7833-61.500037500000000000000
Eltanin 128-61.7500-61.233347580000000000000
Eltanin 409-61.2667-56.1833224098960030100000
Eltanin 256-61.1833-67.816739770190010000<10000000
Eltanin Tr-4-11-61.0333-61.016734680000000000000
Eltanin 990-60.7000-60.116737700101000000000000
Eltanin 402-60.3667-55.56673537071000000000000
Eltanin Tr-4-10-60.0500-61.833340620000000000000
Eltanin 146-60.0167-64.8333342104001000000000000
Eltanin 140-59.9333-65.30003687060009900<10<100000
Eltanin 251-59.2333-69.0833374208400000000000000
Eltanin 245-59.0833-67.06673485010500000000000000
Eltanin 308-59.0000-71.0000378901220005829140610550
Eltanin 395-58.9667-56.050037750161000000000000
Eltanin 116-58.4667-60.63333084012000970<110<1001<10
Eltanin 367-58.1167-59.6167387001600980<1101<10000
Eltanin 312-58.0000-70.9500400501500059051401730110
Eltanin PG-4-10-57.9333-64.700041080600076118012201<10
Eltanin 391-57.6500-55.933339580000000000000
Eltanin 363-57.5833-58.900035000340007503110810110
Eltanin 231-57.1500-69.15004188018006202702540<100
Eltanin 121-57.1000-63.350039000820082136<16<102<10
Eltanin 385-57.0333-56.9667328201800093014<11<10<1<10
Eltanin P-4-8-56.8333-65.0000371501200091<11105<101<10
Eltanin 156-56.5167-63.266739270700067<181304<1<1530
Eltanin 161-56.2000-66.2000878035000422537065<131<1
Eltanin 323-56.0833-71.1833190001000004621122043<156<1
Eltanin Tr-4-6-55.9000-61.600041080790067005026100<10
Eltanin 373-53.0167-55.816719620500004941216042<1760
Eltanin 559-52.0167-56.63336410920005057702102090