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Thiede, Jörn (1975): Relative abundance of pteropod species of the plankton pump samples in the surface water of the eastern North Atlantic Ocean (Table 4) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.510774, Supplement to: Thiede, J (1975): Shell- and skeleton-producing plankton and nekton in the eastern North Atlantic Ocean. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe C Geologie und Geophysik, Gebrüder Bornträger, Berlin, Stuttgart, C20, 33-79

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Abstract:
Plankton pump samples and plankton tows (size fractions between 0.04 mm and 1.01 mm) from the eastern North Atlantic Ocean contain the following shell- and skeleton-producing planktonic and nektonic organisms, which can be fossilized in the sediments: diatoms, radiolarians, foraminifers, pteropods, heteropods, larvae of benthic gastropods and bivalves, ostracods, and fish. The abundance of these components has been mapped quantitatively in the eastern North Atlantic surface waters in October - December 1971. More ash (after ignition of the organic matter, consisting mostly of these components) per cubic meter of water is found close to land masses (continents and islands) and above shallow submarine elevations than in the open ocean. Preferred biotops of planktonic diatoms in the region described are temperate shallow water and tropical coastal upwelling areas. Radiolarians rarely occur close to the continent, but are abundant in pelagic warm water masses, even near islands. Foraminifers are similar to the radiolarians, rarer in the coastal water mass of the continent than in the open ocean or off oceanic islands. Their abundance is highest outside the upwelling area off NW Africa.
Molluscs generally outnumber planktonic foraminifers, implying that the carbonate cycle of the ocean might be influenced considerably by these animals. The molluscs include heteropods, pteropods, and larvae of benthic bivalves and gastropods. Larvae of benthic molluscs occur more frequently close to continental and island margins and above submarine shoals (in this case mostly guyots) than in the open ocean. Their size increases, but they decrease in number with increasing distance from their area of origin. Ostracods and fish have only been found in small numbers concentrated off NW Africa. All of the above-mentioned components occur in higher abundances in the surface water than in subsurface waters. They are closely related to the hydrography of the sampled water masses (here defined through temperature measurements). Relatively warm water masses of the southeastern branches of the Gulf Stream system transport subtropical and southern temperate species to the Bay of Biscay, relatively cool water masses of the Portugal and Canary Currents carry transitional faunal elements along the NW African coast southwards to tropical regions. These mix in the northwest African upwelling area with tropical faunal elements which are generally assumed to live in the subsurface water masses and which probably have been transported northwards to this area by a subsurface counter current. The faunas typical for tropical surface water masses are not only reduced due to the tongue of cool water extending southwards along the coast, but they are also removed from the coastal zone by the upwelling subsurface water masses carrying their own shell and skeleton assemblages.
Tropical water masses contain much more shelland skeleton-producing plankters than subtropical and temperate ones. The climatic conditions found at different latitudes control the development and intensity of a separate continental coastal water mass with its own plankton assemblages. Extent of this water mass and steepness of gradients between the pelagic and coastal environment limit the occurrence of pelagic plankton close to the continental coast. A similar water mass in only weakly developed off oceanic islands.
Coverage:
Median Latitude: 18.845632 * Median Longitude: -18.557241 * South-bound Latitude: 15.000000 * West-bound Longitude: -22.670000 * North-bound Latitude: 24.670000 * East-bound Longitude: -16.050000
Date/Time Start: 1971-10-28T00:00:00 * Date/Time End: 1971-12-09T00:00:00
Minimum DEPTH, water: m * Maximum DEPTH, water: m
Event(s):
M25_12300 * Latitude Start: 24.000000 * Longitude Start: -17.000000 * Latitude End: 15.000000 * Longitude End: -18.000000 * Date/Time Start: 1971-10-28T00:00:00 * Date/Time End: 1971-12-09T00:00:00 * Location: North Atlantic * Campaign: M25 * Basis: Meteor (1964) * Method/Device: Water pump (PUMP)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Sample code/labelSample labelThiede, Jörn
LATITUDELatitudeGeocode
LONGITUDELongitudeGeocode
Latitude 2Latitude 2Thiede, Jörn
Longitude 2Longitude 2Thiede, Jörn
DEPTH, waterDepth watermGeocode
Limacina bulimoidesL. bulimoides%Thiede, JörnCounting 250-1000 µm fraction
Limacina helicoidesL. helicoides%Thiede, JörnCounting 250-1000 µm fraction
Limacina inflataL. inflata%Thiede, JörnCounting 250-1000 µm fraction
10 Limacina lesueuriiL. lesueurii%Thiede, JörnCounting 250-1000 µm fraction
11 Limacina retroversa retroversaL. r. retroversa%Thiede, JörnCounting 250-1000 µm fraction
12 Limacina trochiformisL. trochiformis%Thiede, JörnCounting 250-1000 µm fraction
13 Creseis acicula aciculaC. a. acicula%Thiede, JörnCounting 250-1000 µm fraction
14 Creseis acicula clavaC. a. clava%Thiede, JörnCounting 250-1000 µm fraction
15 Creseis virgula conicaC. virgula conica%Thiede, JörnCounting 250-1000 µm fraction
16 Creseis virgula constrictaC. virgula constricta%Thiede, JörnCounting 250-1000 µm fraction
17 Creseis virgula virgulaC. virgula virgula%Thiede, JörnCounting 250-1000 µm fraction
18 Styliola subulaS. subula%Thiede, JörnCounting 250-1000 µm fraction
19 Clio politaC. polita%Thiede, JörnCounting 250-1000 µm fraction
20 Clio pyramidata pyramidataC. p. pyramidata%Thiede, JörnCounting 250-1000 µm fraction
21 Diacria trispinosa majorD. t. major%Thiede, JörnCounting 250-1000 µm fraction
22 Diacria trispinosa trispinosaD. t. trispinosa%Thiede, JörnCounting 250-1000 µm fraction
23 Cavolinia inflexa imitansC. i. imitans%Thiede, JörnCounting 250-1000 µm fraction
24 Cavolinia inflexa inflexaC. i. inflexa%Thiede, JörnCounting 250-1000 µm fraction
25 Cavolinia inflexa labiataC. i. labiata%Thiede, JörnCounting 250-1000 µm fraction
26 Cymbulia peroniC. peroni%Thiede, JörnCounting 250-1000 µm fraction
27 PteropodaPteropoda#Thiede, JörnCounting 250-1000 µm fraction
Size:
2088 data points

Data

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


Sample label

Latitude

Longitude

Latitude 2

Longitude 2

Depth water [m]

L. bulimoides [%]

L. helicoides [%]

L. inflata [%]
10 
L. lesueurii [%]
11 
L. r. retroversa [%]
12 
L. trochiformis [%]
13 
C. a. acicula [%]
14 
C. a. clava [%]
15 
C. virgula conica [%]
16 
C. virgula constricta [%]
17 
C. virgula virgula [%]
18 
S. subula [%]
19 
C. polita [%]
20 
C. p. pyramidata [%]
21 
D. t. major [%]
22 
D. t. trispinosa [%]
23 
C. i. imitans [%]
24 
C. i. inflexa [%]
25 
C. i. labiata [%]
26 
C. peroni [%]
27 
Pteropoda [#]
12300-10915.00-17.8816.25-17.5050051003270100100000000092
12300-10615.02-17.8814.92-17.5850021003643000000000000014
12300-10715.12-18.1815.53-18.135007004131707700000000029
12300-10515.17-18.3315.02-17.88500290031220112500000000055
12300-10315.50-17.3315.33-17.05515013004511440400000400047
12300-10815.53-18.1315.00-17.8851031017219200900000000070
12300-9715.60-16.9715.92-16.7552051031600001000000100156
12300-11115.70-17.7015.70-16.955004500936009000000000022
12300-10215.78-18.1515.50-17.335005500297210400000000183
12300-9615.80-17.7015.60-16.9750046002226200000000020246
12300-10415.83-18.1515.17-18.3350059001984019000000001102
12300-9815.92-16.7516.03-16.93500200020754701000000001167
12300-9515.97-18.1015.80-17.705007400153303000000300039
12300-9415.98-18.2015.97-18.1050012001355911500000400078
12300-11216.00-16.7516.40-16.98502271051155011000000000266
12300-9916.03-17.0716.12-17.5850040035163513300000100068
12300-9316.05-18.7515.98-18.20500130031006038000000001316
12300-8616.08-22.6716.25-22.185203400275415500000000044
12300-9216.12-19.1216.05-18.755005000437000000000000014
12300-10016.12-17.5816.17-18.105008300100100300001000172
12300-10116.17-18.1015.78-18.155006300176330900000000035
12300-8516.18-22.5816.08-22.67500254081341302900000000424
12300-9116.20-19.9316.12-19.125007900574003000001001281
12300-8216.23-22.0816.58-21.97500180036180270000000000011
12300-8716.25-22.1816.37-21.2550050001533361800000000334
12300-9016.25-20.4016.20-19.93500370013330303000000001030
12300-11016.25-17.5015.70-17.7050078001215012000000011130
12300-8916.28-20.7316.25-20.405000000000000000000007
12300-8416.30-22.5016.18-22.585005502719700700000000242
12300-8116.35-22.4516.48-22.1754037044220402600000000027
12300-8816.37-21.2516.28-20.735000000000000000000002
12300-11316.40-16.9816.45-16.675026400223000300000200359
12300-8316.47-22.0016.30-22.50500150021539000000000102117
12300-8016.50-22.6516.35-22.455006800437001600000000191
12300-11416.50-16.6316.38-16.70500300045230002000000000177
12300-11616.55-16.7016.62-16.755000000000000000000001
12300-11516.67-16.7516.67-16.6750000033430001900000000521
12300-7916.80-22.0016.50-22.6550058108138109000000001107
12300-7816.95-21.8016.80-22.00500000442860011000000001118
12300-11817.08-16.7217.58-16.83500410132222011000000101595
12300-7717.55-21.3816.95-21.805000000000000000000002
12300-11917.58-16.8318.20-16.62500230037362000000001000428
12300-7618.10-21.0017.55-21.38500130137207003300000070015
12300-12018.20-16.6218.33-16.235000000000000000000007
12300-12118.28-16.6218.75-16.8550053004060000000000001189
12300-7518.45-20.6718.10-21.0050047001591500900003000334
12300-12218.75-16.8518.75-16.455006500350000000000000040
12300-12318.75-16.4518.48-16.685004100518000000000000039
12300-12418.78-16.7019.50-17.135000000000000000000004
12300-7418.80-20.3318.45-20.6750054001525002300000000261
12300-7319.35-19.9818.80-20.33500310027040022000014000251
12300-7219.40-19.9519.35-19.9850021004336301400080000263
12300-12519.50-17.1320.00-17.42500700978400200000000046
12300-7119.85-19.5019.40-19.9550134003712410703000000068
12300-12620.00-17.4220.52-17.425000000000000000000005
12300-7020.30-19.1719.85-19.505007106012000600006000017
12300-12720.52-17.4220.62-18.075006900271100000010000067
12300-12920.62-18.7520.92-19.305007800131101600000000072
12300-12820.62-18.0720.62-18.7550052004301001000100100143
12300-6920.80-18.7220.30-19.1751706100071203000000008121
12300-13020.92-19.3021.60-19.125003900500600000000000618
12300-6821.20-18.4520.80-18.725070000640771400000000014
12300-6721.35-18.5021.20-18.45501840016100000006000067
12300-13121.60-19.1222.13-18.775004300131010317000300000030
12300-6621.90-18.3321.35-18.505008910201000000070000114
12300-13222.13-18.7722.58-18.635007100911300060000000035
12300-6522.45-18.1221.90-18.335000000000000000000001
12300-5722.50-16.5022.55-16.835000000000000000000001
12300-13322.58-18.6322.93-18.5350064007140000140000000014
12300-13922.58-16.8722.55-16.675000000000000000000003
12300-13622.62-17.6722.78-17.27530930030000300400000040
12300-6022.65-17.6222.30-16.835001000000000000000000011
12300-5922.70-17.3822.65-17.62500950000000000500000040
12300-6122.75-17.3822.70-17.22500980000000020000000066
12300-6322.78-17.8322.75-17.385000000000000000000001
12300-13722.78-17.2722.90-17.18500922000000000000000248
12300-6222.85-17.6022.78-17.835001000000000000000000048
12300-5522.88-17.1022.72-16.605000000000000000000001
12300-13822.90-17.1822.58-16.875013810060000000000000016
12300-13422.93-18.5323.10-17.73520654094007070000000246
12300-13523.10-17.7322.62-17.675000000000000000000005
12300-5423.15-18.8322.88-17.10501970000000000100000074
12300-14123.28-16.4022.72-16.605000000000000000000003
12300-5323.45-18.6723.15-18.835003900090000420000000933
12300-5223.70-18.2223.45-18.675047400019000000000000427
12300-5123.90-17.5523.70-18.22500858000800000000000013
12300-14324.67-16.0523.80-16.40510050002020000000000000010