Pollen analysis of sediment cores from the mouth of the river Congo to Walvis Bay and Lüderitz
The distribution of pollen in marine sediments is used to record vegetation changes over the past 30,000 years on the adjacent continent. A transect of marine pollen sequences from the mouth of the river Congo (~5°S) to Walvis Bay and Lüderitz (~25°S) shows vegetation changes in Congo, Angola and Na...
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2007
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.726889 https://doi.org/10.1594/PANGAEA.726889 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.726889 2023-05-15T18:21:16+02:00 Pollen analysis of sediment cores from the mouth of the river Congo to Walvis Bay and Lüderitz Dupont, Lydie M Behling, Hermann Jahns, Susanne Marret, Fabienne Kim, Jung-Hyun MEDIAN LATITUDE: -14.343930 * MEDIAN LONGITUDE: 12.519507 * SOUTH-BOUND LATITUDE: -25.513880 * WEST-BOUND LONGITUDE: 11.221700 * NORTH-BOUND LATITUDE: -5.588300 * EAST-BOUND LONGITUDE: 13.309050 * DATE/TIME START: 1997-09-04T16:04:00 * DATE/TIME END: 2000-06-20T15:23:00 2007-08-28 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.726889 https://doi.org/10.1594/PANGAEA.726889 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.726889 https://doi.org/10.1594/PANGAEA.726889 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Dupont, Lydie M; Behling, Hermann; Jahns, Susanne; Marret, Fabienne; Kim, Jung-Hyun (2007): Variability in glacial and Holocene marine pollen records offshore from west southern Africa. Vegetation History and Archaeobotany, 16, 87-100, https://doi.org/10.1007/s00334-006-0080-8 175-1079A 175-1084A Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences Congo Fan DRILL Drilling/drill rig GeoB6518-1 Gravity corer (Kiel type) Joides Resolution Leg175 M47/3 MARUM Meteor (1986) Ocean Drilling Program ODP SL Dataset 2007 ftpangaea https://doi.org/10.1594/PANGAEA.726889 https://doi.org/10.1007/s00334-006-0080-8 2023-01-20T07:31:29Z The distribution of pollen in marine sediments is used to record vegetation changes over the past 30,000 years on the adjacent continent. A transect of marine pollen sequences from the mouth of the river Congo (~5°S) to Walvis Bay and Lüderitz (~25°S) shows vegetation changes in Congo, Angola and Namibia from the last glacial period into the Holocene. The comparison of pollen records from different latitudes provides information about the latitudinal shift of open forest and savannahs (Poaceae pollen), the extension of lowland forest (rain forest pollen) and Afromontane forest (Podocarpus pollen), and the position of the desert fringe (pollen of Caryophyllaceae, Chenopodiaceae and Amaranthaceae). High Cyperaceae pollen percentages in sediments from the last glacial period off the mouth of the river Congo suggest the presence of open swamps rather than savannah vegetation in the Congo Basin. Pollen from Restionaceae in combination with Stoebe-type pollen (probably from Elytropappus) indicates a possible northwards extension of winter rain vegetation during the last glacial period. The record of Rhizophora (mangrove) pollen is linked to erosion of the continental shelf and sea-level rise. Pollen influx is highest off river mouths (10-2000 grains year**-1 cm**-2), close to the coast (300-6000 grains year**-1 cm**-2), but is an order of magnitude lower at sites situated far from the continent (<10 grains year**-1 cm**-2). Dataset South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(11.221700,13.309050,-5.588300,-25.513880) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
175-1079A 175-1084A Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences Congo Fan DRILL Drilling/drill rig GeoB6518-1 Gravity corer (Kiel type) Joides Resolution Leg175 M47/3 MARUM Meteor (1986) Ocean Drilling Program ODP SL |
spellingShingle |
175-1079A 175-1084A Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences Congo Fan DRILL Drilling/drill rig GeoB6518-1 Gravity corer (Kiel type) Joides Resolution Leg175 M47/3 MARUM Meteor (1986) Ocean Drilling Program ODP SL Dupont, Lydie M Behling, Hermann Jahns, Susanne Marret, Fabienne Kim, Jung-Hyun Pollen analysis of sediment cores from the mouth of the river Congo to Walvis Bay and Lüderitz |
topic_facet |
175-1079A 175-1084A Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences Congo Fan DRILL Drilling/drill rig GeoB6518-1 Gravity corer (Kiel type) Joides Resolution Leg175 M47/3 MARUM Meteor (1986) Ocean Drilling Program ODP SL |
description |
The distribution of pollen in marine sediments is used to record vegetation changes over the past 30,000 years on the adjacent continent. A transect of marine pollen sequences from the mouth of the river Congo (~5°S) to Walvis Bay and Lüderitz (~25°S) shows vegetation changes in Congo, Angola and Namibia from the last glacial period into the Holocene. The comparison of pollen records from different latitudes provides information about the latitudinal shift of open forest and savannahs (Poaceae pollen), the extension of lowland forest (rain forest pollen) and Afromontane forest (Podocarpus pollen), and the position of the desert fringe (pollen of Caryophyllaceae, Chenopodiaceae and Amaranthaceae). High Cyperaceae pollen percentages in sediments from the last glacial period off the mouth of the river Congo suggest the presence of open swamps rather than savannah vegetation in the Congo Basin. Pollen from Restionaceae in combination with Stoebe-type pollen (probably from Elytropappus) indicates a possible northwards extension of winter rain vegetation during the last glacial period. The record of Rhizophora (mangrove) pollen is linked to erosion of the continental shelf and sea-level rise. Pollen influx is highest off river mouths (10-2000 grains year**-1 cm**-2), close to the coast (300-6000 grains year**-1 cm**-2), but is an order of magnitude lower at sites situated far from the continent (<10 grains year**-1 cm**-2). |
format |
Dataset |
author |
Dupont, Lydie M Behling, Hermann Jahns, Susanne Marret, Fabienne Kim, Jung-Hyun |
author_facet |
Dupont, Lydie M Behling, Hermann Jahns, Susanne Marret, Fabienne Kim, Jung-Hyun |
author_sort |
Dupont, Lydie M |
title |
Pollen analysis of sediment cores from the mouth of the river Congo to Walvis Bay and Lüderitz |
title_short |
Pollen analysis of sediment cores from the mouth of the river Congo to Walvis Bay and Lüderitz |
title_full |
Pollen analysis of sediment cores from the mouth of the river Congo to Walvis Bay and Lüderitz |
title_fullStr |
Pollen analysis of sediment cores from the mouth of the river Congo to Walvis Bay and Lüderitz |
title_full_unstemmed |
Pollen analysis of sediment cores from the mouth of the river Congo to Walvis Bay and Lüderitz |
title_sort |
pollen analysis of sediment cores from the mouth of the river congo to walvis bay and lüderitz |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.726889 https://doi.org/10.1594/PANGAEA.726889 |
op_coverage |
MEDIAN LATITUDE: -14.343930 * MEDIAN LONGITUDE: 12.519507 * SOUTH-BOUND LATITUDE: -25.513880 * WEST-BOUND LONGITUDE: 11.221700 * NORTH-BOUND LATITUDE: -5.588300 * EAST-BOUND LONGITUDE: 13.309050 * DATE/TIME START: 1997-09-04T16:04:00 * DATE/TIME END: 2000-06-20T15:23:00 |
long_lat |
ENVELOPE(11.221700,13.309050,-5.588300,-25.513880) |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Supplement to: Dupont, Lydie M; Behling, Hermann; Jahns, Susanne; Marret, Fabienne; Kim, Jung-Hyun (2007): Variability in glacial and Holocene marine pollen records offshore from west southern Africa. Vegetation History and Archaeobotany, 16, 87-100, https://doi.org/10.1007/s00334-006-0080-8 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.726889 https://doi.org/10.1594/PANGAEA.726889 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.726889 https://doi.org/10.1007/s00334-006-0080-8 |
_version_ |
1766200441842958336 |