Citation:

PANGAEA.983411

Name: Coccolithophores from the western equatorial Indian Ocean off Tanzania
Published: 2025-07-24
License: https://creativecommons.org/licenses/by/4.0/
Keywords: coccolith abundances; plankton; western equatorial Indian Ocean

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Published: 2025-07-24 • DOI registered: 2025-08-22

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Abstract:

Filtered plankton samples from 8 stations taken during the Meteor cruise M75/2 off Tanzania in March 2006 were analyzed for their coccolithophore content. Using a scanning electron microscope, a living community of 47 species was observed, of which only three species contributed significantly to the species community, and two distinct depth-related assemblages were identified.

Keyword(s):

coccolith abundances; plankton; western equatorial Indian Ocean

Related to:

Stolz, Katharina; Baumann, Karl-Heinz; Mersmeyer, Hannes (2016): Extant coccolithophores from the western equatorial Indian Ocean off Tanzania and coccolith distribution in surface sediments. Micropaleontology, 61(6), 473-488, https://doi.org/10.47894/mpal.61.6.06

Project(s):

Center for Marine Environmental Sciences (MARUM)

Funding:

German Research Foundation (DFG), grant/award no. 49926684 : EXC 309: The Ocean in the Earth System

Coverage:

Median Latitude: -5.566327 * Median Longitude: 40.284837 * South-bound Latitude: -6.978000 * West-bound Longitude: 39.352000 * North-bound Latitude: -4.817000 * East-bound Longitude: 42.043000

Date/Time Start: 2008-02-10T00:00:00 * Date/Time End: 2008-02-16T00:00:00

Minimum DEPTH, water: 5 m * Maximum DEPTH, water: 150 m

Event(s):

GeoB12602-1 (M75/2_89-1) * Latitude: -5.498500 * Longitude: 39.486500 * Date/Time: 2008-02-10T05:31:00 * Elevation: -854.0 m * Location: Pemba Channel * Campaign: * Basis: * Method/Device: (CTD-RO)

GeoB12604-1 (M75/2_91-1) * Latitude: -5.516000 * Longitude: 39.405333 * Date/Time: 2008-02-10T13:10:00 * Elevation: -611.0 m * Location: Pemba Channel * Campaign: * Basis: * Method/Device: (CTD-RO)

GeoB12608-4 (M75/2_95-4) * Latitude: -4.987667 * Longitude: 39.432833 * Date/Time: 2008-02-11T12:14:00 * Elevation: -570.0 m * Location: Pemba Channel * Campaign: * Basis: * Method/Device: (CTD-RO)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Baumann, Karl-Heinz
2	DATE/TIME	Date/Time		Baumann, Karl-Heinz		Geocode
3	LATITUDE	Latitude		Baumann, Karl-Heinz		Geocode
4	LONGITUDE	Longitude		Baumann, Karl-Heinz		Geocode
5	DEPTH, water	Depth water	m	Baumann, Karl-Heinz		Geocode
6	Temperature, water	Temp	°C	Baumann, Karl-Heinz		at depth
7	Salinity	Sal		Baumann, Karl-Heinz		at depth
8	Volume, filter	Vol filter	l	Baumann, Karl-Heinz
9	Coccospheres	Coccosp	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)	Total
10	Acanthoica quattrospina	A. quattrospina	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
11	Algirosphaera robusta	A. robusta	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
12	Calcidiscus leptoporus	C. leptoporus	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
13	Ceratolithus cristatus	C. cristatus	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)	HET
14	Discosphaera tubifera	D. tubifera	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
15	Emiliania huxleyi	E. huxleyi	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
16	Florisphaera profunda	F. profunda	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
17	Gephyrocapsa ericsonii	G. ericsonii	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
18	Gephyrocapsa oceanica	G. oceanica	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
19	Gladiolithus flabellatus	G. flabellatus	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
20	Hayaster perplexus	H. perplexus	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
21	Helicosphaera hyalina	H. hyalina	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
22	Helicosphaera carteri	H. carteri	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
23	Oolithotus antillarum	O. antillarum	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
24	Oolithotus fragilis	O. fragilis	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
25	Ophiaster sp.	Ophiaster sp.	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
26	Pontosphaera syracusana	P. syracusana	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
27	Reticulofenestra sessilis	R. sessilis	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
28	Rhabdosphaera clavigera	R. clavigera	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
29	Syracosphaera corolla	S. corolla	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
30	Syracosphaera lamina	S. lamina	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
31	Syracosphaera mediterranea	S. mediterranea	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
32	Syracosphaera molischii	S. molischii	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
33	Syracosphaera nana	S. nana	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
34	Syracosphaera nodosa	S. nodosa	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
35	Syracosphaera pulchra	S. pulchra	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
36	Syracosphaera spp.	Syracosphaera spp.	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
37	Umbellosphaera irregularis	U. irregularis	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
38	Umbellosphaera tenuis	U. tenuis	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
39	Umbilicosphaera foliosa	U. foliosa	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
40	Umbilicosphaera hulburtiana	U. hulburtiana	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)
41	Umbilicosphaera sibogae	U. sibogae	#/l	Baumann, Karl-Heinz	Scanning electron microscope (SEM)

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

419 data points

Data

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

1 Event	2 Date/Time	3 Latitude	4 Longitude	5 Depth water [m]	6 Temp [°C]	7 Sal	8 Vol filter [l]	9 Coccosp [#/l]	10 A. quattrospina [#/l]	11 A. robusta [#/l]	12 C. leptoporus [#/l]	13 C. cristatus [#/l]	14 D. tubifera [#/l]	15 E. huxleyi [#/l]	16 F. profunda [#/l]	17 G. ericsonii [#/l]	18 G. oceanica [#/l]	19 G. flabellatus [#/l]	20 H. perplexus [#/l]	21 H. hyalina [#/l]	22 H. carteri [#/l]	23 O. antillarum [#/l]	24 O. fragilis [#/l]	25 Ophiaster sp. [#/l]	26 P. syracusana [#/l]	27 R. sessilis [#/l]	28 R. clavigera [#/l]	29 S. corolla [#/l]	30 S. lamina [#/l]	31 S. mediterranea [#/l]	32 S. molischii [#/l]	33 S. nana [#/l]	34 S. nodosa [#/l]	35 S. pulchra [#/l]	36 Syracosphaera spp. [#/l]	37 U. irregularis [#/l]	38 U. tenuis [#/l]	39 U. foliosa [#/l]	40 U. hulburtiana [#/l]	41 U. sibogae [#/l]
GeoB12602-1	2008-02-10	-5.497	39.485	5	25.8	35.20	3.0	5353						1268		564	2395																	141		986
GeoB12602-1	2008-02-10	-5.495	39.418	40	25.7	35.10	3.0
GeoB12602-1	2008-02-10	-5.495	39.418	80	23.8	35.17	3.5
GeoB12602-1	2008-02-10	-5.495	39.418	100	22.2	35.30	5.0	5283			66				4887	66	66		66															66				66
GeoB12602-1	2008-02-10	-5.495	39.418	125	20.8	35.34	5.0
GeoB12602-1	2008-02-10	-5.495	39.418	150	19.1	35.33	5.0	932									311																					311		311
GeoB12604-1	2008-02-10	-5.525	39.352	5	26.2	35.14	3.5	4277						880			3019																			252				126
GeoB12604-1	2008-02-10	-5.519	39.405	10	26.6	35.13	3.5	14240						3988	285	285	5126								285										285	2278		1139	285	285
GeoB12604-1	2008-02-10	-5.519	39.405	25	25.7	35.12	3.5	3840						1019			1568																			862	157		157	78
GeoB12604-1	2008-02-10	-5.519	39.405	50	24.3	35.10	3.5
GeoB12604-1	2008-02-10	-5.519	39.405	75	23.2	35.24	3.0	424											212			212
GeoB12604-1	2008-02-10	-5.519	39.405	125	20.3	35.30	5.0	769		110					329		110	110				110
GeoB12608-4	2008-02-11	-4.993	39.433	5	26.0	35.20	4.0	20853						6951			10079																	348		2780			348	348
GeoB12608-4	2008-02-11	-4.987	39.433	10	26.5	35.11	5.0	9532					115	1034			5627																			2297	459
GeoB12608-4	2008-02-11	-4.987	39.433	25	26.1	35.11	4.0	16189						1704			12781																			853				852
GeoB12608-4	2008-02-11	-4.987	39.433	50	25.8	35.11	3.5
GeoB12608-4	2008-02-11	-4.987	39.433	100	20.7	35.29	5.0	4134							3369		613		153
GeoB12608-4	2008-02-11	-4.987	39.433	125	18.8	35.31	5.0	1398							622		311	155	311
GeoB12610-1	2008-02-11	-4.818	39.420	5	25.7	35.30	3.5	1772									1772
GeoB12610-1	2008-02-11	-4.817	39.423	20	26.5	35.13	4.0	14745					415	3115	415		6646						208											208		3323	208		208
GeoB12610-1	2008-02-11	-4.817	39.423	40	25.7	35.13	4.0	9195	123	368	245			2452	368		4168											123								858	123			368
GeoB12610-1	2008-02-11	-4.817	39.423	60	24.8	35.12	3.5	22810			340	340		2383	2724		13959																			1362		1021		681
GeoB12610-1	2008-02-11	-4.817	39.423	80	23.3	35.19	4.0	4408			361			217	2169		1229						72													72				290
GeoB12610-1	2008-02-11	-4.817	39.423	100	22.6	35.24	5.0	6718						763	4275		611	458					611
GeoB12611-5	2008-02-12	-5.562	41.262	5	27.2	3.10	7.5	2536					282	282			704																	141		1128
GeoB12611-5	2008-02-12	-5.567	41.250	10	27.9	35.03	7.0	1957						559			559																			839
GeoB12611-5	2008-02-12	-5.567	41.250	20	27.9	35.03	5.5	404									111						125											56		56			56
GeoB12611-5	2008-02-12	-5.567	41.250	40	27.4	35.10	4.0	737									17			17			125							147						280			75	75
GeoB12611-5	2008-02-12	-5.567	41.250	80	20.8	35.31	7.0	1908			99			99	693		396						125			99										198				198
GeoB12611-5	2008-02-12	-5.567	41.250	100	18.5	35.29	7.5
GeoB12611-5	2008-02-12	-5.567	41.250	125	16.1	35.23	7.5	96									96
GeoB12612-3	2008-02-13	-5.733	42.037	5	26.9	35.17	7.0	229																												229
GeoB12612-3	2008-02-13	-5.732	42.043	10	28.0	35.11	7.5	7586						542																						6502			542
GeoB12612-3	2008-02-13	-5.732	42.043	20	27.9	35.11	6.0	4622					440	220			220																	220		3522
GeoB12612-3	2008-02-13	-5.732	42.043	40	27.9	35.11	5.0
GeoB12612-3	2008-02-13	-5.732	42.043	80	24.5	35.10	5.0	406																	406
GeoB12613-3	2008-02-13	-5.487	40.933	5	26.7	35.50	7.5	5016					239	358			1194																	119		2509			478	119
GeoB12613-3	2008-02-13	-5.487	40.933	10	27.6	34.98	7.0	11082						2244		204	1836							204							204	1291	204	204		3671	204		816
GeoB12613-3	2008-02-13	-5.487	40.933	20	27.5	35.01	6.0	12543	738					2397			1106																		1291	6454	184		369
GeoB12613-3	2008-02-13	-5.487	40.933	40	27.4	35.03	5.0	9526						1868			1494										187									5229			748
GeoB12613-3	2008-02-13	-5.487	40.933	60	25.6	35.07	5.0	14776				715	715	4766			2145																	477		5958
GeoB12613-3	2008-02-13	-5.487	40.933	80	23.9	35.13	6.0	4687			256			1364	170		1108						682													511			85	511
GeoB12613-3	2008-02-13	-5.487	40.933	100	19.8	35.20	7.0	9719			314	157		1881	3136		2038						627						627					157		314				470
GeoB12616-6	2008-02-16	-6.978	40.395	5	27.6	35.00	5.0	4938									219																			3840		219	658
GeoB12616-6	2008-02-16	-6.963	40.395	20	28.4	34.93	4.0	3995						240			80													160				80		3037			399
GeoB12616-6	2008-02-16	-6.963	40.395	40	27.7	35.17	7.0	6302					97	1067			485			194	97															3394			970
GeoB12616-6	2008-02-16	-6.963	40.395	60	24.3	35.06	4.5	3322			1190						1253				125															376			125	252
GeoB12616-6	2008-02-16	-6.963	40.395	80	22.6	35.12	5.0	2537		267	467				334		734						734
GeoB12616-6	2008-02-16	-6.963	40.395	100	20.3	35.12	6.0	4779		252	880				1761		1635						252