10.1594/PANGAEA.55046
Dupont, Lydie M
Lydie M
Dupont
0000-0001-9531-6793
Agwu, Chiori O C
Chiori O C
Agwu
Pollen analysis of surface sediments from the Gulf of Guinea and offshore NW-Africa
PANGAEA
1991
Latitude of event
Longitude of event
Event label
Elevation of event
DEPTH, sediment/rock
Fungal spore indeterminata
Acacia/Parkia
Acanthaceae
Adenia
Adenium
Aeschynemone
Afrormosia
Afzelia
Aizoaceae
Albizzia
Alchornea
Allanblackia
Alnus
Aneilema
Anemone
Anthocleista
Antidesma-type
Apocynaceae
Arecaceae
Artemisia (Africa)
Compositae Liguliflorae
Compositae Tubuliflorae
Avicennia
Balanites
Baphia-type
Barleria
Isoberlinia-type
Betula
Blepharis
Blighia-type
Boerhavia
Bombax
Borassus-type
Borreria
Boscia-type
Bosqueia
Bouchea
Brachystegia
Brassicaceae
Bridelia
Burseraceae
Butyrospermum
Cadaba
Caesalpinioideae
Calligonum
Calycobolus-type
Campylostemon
Canarium
Canavalia
Canthium
Cardiospermum
Caryophyllaceae, Chenopodiaceae, Amaranthaceae
Cassia-type
Caylusea
Celastraceae/Hippocrateaceae
Celtis
Chlorophora
Cissus
Clausena
Cleome
Cnestis-type
Coccinia
Combretaceae/Melastomataceae
Commiphora
Conocarpus
Cordia
Corylus
Crossopteryx
Croton-type
Cucurbitaceae
Cuviera
Cyperaceae undifferentiated
Daniellia-type
Delonix
Dialium-type
Dichrostachys cinerea
Dioscorea
Diospyros
Dodonaea viscosa
Dolichos
Dorstenia africana-type
Dracaena
Drosera (Africa)
Duparquetia
Echium (Africa)
Elaeis guineensis
Entada-type
Ephedra
Erica (Africa)
Euphorbia-type
Euphorbiaceae undifferentiated
Papilionoideae
Fagonia
Fagus
Flacourtiaceae
Funtumia
Gaertnera
Garcinia
Gardenia
Gymnocarpos
Haloragaceae
Heliotropium
Hildebrandtia
Holoptelea grandis
Hygrophila-type
Hymenocardia
Hyphaene
Hypoestes type
Ilex cf.. mitis
Indeterminata/varia
Indigofera-type
Iodes
Irvingia
Ixora
Jasminum
Jatropha
Juglans
Juniperus (Africa)
Jussiaea
Justicia/Monechma
Kedrostis
Khaya
Labiatae
Langucularia
Lannea
Leea
Leonotis
Lepisanthus
Leptaulus
Liliaceae undifferentiated
Lophira
Ludwigia
Macaranga-type
Maerua-type
Malvaceae (Africa)
Manilkara
Martretia
Melia
Melochia
Mendoncia
Merremia
Mimosoideae
Mimusops
Mitracarpus
Mitragyna
Mitriostigma/Oxyanthus
Morus-type
Morelia senegalensis
Myrica
Myrtaceae (Africa)
Nauclea/Mitragyna
Nitraria
Nypa
Ochna
Ochnaceae
Olacaceae
Olea
Oleaceae (Africa)
Parinari
Pentaclethra
Periploca
Phillyrea
Phyllanthus
Picea
Piliostigma
Pinus
Plantago
Poaceae undifferentiated
Podocarpus
Polycarpon
Polygala-type
Polygonum aviculare-type
Portulaca
Prosopis
Protea
Pterocarpus
Pterolobium
Pycnanthus
Quercus
Rhamnaceae undifferentiated
Rhaphiostylis
Rhizophora
Rhus-type
Rhynchosia-type
Rosaceae (Africa)
Rubiaceae undifferentiated
Ruellia
Rutaceae
Rytigynia
Salvadora persica
Sapindaceae
Sapium-type
Sapotaceae/Meliaceae
Schrebera
Sesbania-type
Sherbournea
Simirestis
Solanum-type
Spathodea
Spondias
Sterculia-type
Sterculiaceae
Strophanthus-type
Strychnos
Symphonia globulifera
Tabernaemontana
Tamarindus/Cryptosepalum
Tamarix (Africa)
Tapinanthus
Tarenna
Tephrosia
Tetrorchidium
Tiliaceae
Trichilia
Trichodesma
Turraea
Typha angustifolia-type
Uapaca
Ulmus
Urticaceae
Utricularia (Africa)
Vigna
Virectaria
Vitaceae (Africa)
Zanthoxylum
Lycopodium (Africa)
Spores, monolete psilate
Spores, monolete
Spores, monolete verrucate
Pteris
Spores, trilete psilate
Spores, trilete verrucate
Fern spores
Pollen, total
van Veen Grab
Gravity corer (Kiel type)
Giant box corer
Counting, palynology
M65
M6/5
Meteor (1964)
Meteor (1986)
1983-08-14T00:00:00/1988-02-13T00:00:00
Supplementary Dataset
10.1007/BF01803687
24570 data points
text/tab-separated-values
Creative Commons Attribution 3.0 Unported
The areas of marine pollen deposition are related to the pollen source areas by aeolian and fluvial transport regimes, whereas wind transport is much more important than river transport. Pollen distribution patterns of Pinus, Artemisia, Chenopodiaceae-Amaranthaceae, and Asteraceae Tubuliflorae trace atmospheric transport by the northeast trades. Pollen transport by the African Easterly Jet is reflected in the pollen distribution patterns of Chenopodiaceae-Amaranthaceae, Asteraceae Tubuliflorae, and Mitracarpus. Grass pollen distribution registers the latitudinal extension of Sahel, savannas and dry open forests. Marine pollen distribution patterns of Combretaceae-Melastomataceae, Alchornea, and Elaeis reflect the extension of wooded grasslands and transitional forests. Pollen from the Guinean-Congolian/Zambezian forest and from the Sudanian/Guinean vegetation zones mark the northernmost extension of the tropical rain forest. Rhizophora pollen in marine sediments traces the distribution of mangrove swamps. Only near the continent, pollen of Rhizophora, Mitracarpus, Chenopodiaceae-Amaranthaceae, and pollen from the Sudanian and Guinean vegetation zones are transported by the Upwelling Under Current and the Equatorial Under Current, where those currents act as bottom currents. The distribution of pollen in marine sediments, reflecting the position of major climatic zones (desert, dry tropics, humid tropics), can be used in tracing climatic changes in the past.
Supplement to: Dupont, Lydie M; Agwu, Chiori O C (1991): Environmental control of pollen grain distribution patterns in the Gulf of Guinea and offshore NW-Africa. Geologische Rundschau, 80(3), 567-589
-23.7433
9.0166666666667
-2.2033333333333
6.335
Atlantic Ocean
off Guinea
eastern Romanche Fracture Zone
Sierra Leone Basin/Guinea Basin
off Liberia
NE Atlantic off Liberia
off Cote d Ivoire
off Ghana
off eastern Ghana
off Lagos
off Nigeria
off Nigeria-Delta
off Gabun