Mapping of C4 plant input from North West Africa into North East Atlantic sediments
Mapping the abundance of 13C in leaf-wax components in surface sediments recovered from the seafloor off northwest Africa (0–35°N) reveals a clear pattern of delta13C distribution, indicating systematic changes in the proportions of terrestrial C3 and C4 plant input. At 20°N latitude, we find that i...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.692076 2024-09-15T18:24:47+00:00 Mapping of C4 plant input from North West Africa into North East Atlantic sediments Huang, Yongsong Dupont, Lydie M Sarnthein, Michael Hayes, John M Eglinton, Geoffrey MEDIAN LATITUDE: 18.409104 * MEDIAN LONGITUDE: -8.041096 * SOUTH-BOUND LATITUDE: -2.203333 * WEST-BOUND LONGITUDE: -29.000000 * NORTH-BOUND LATITUDE: 41.570000 * EAST-BOUND LONGITUDE: 15.890000 * DATE/TIME START: 1971-01-01T00:00:00 * DATE/TIME END: 1990-10-13T00:00:00 2000 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.692076 https://doi.org/10.1594/PANGAEA.692076 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.692076 https://doi.org/10.1594/PANGAEA.692076 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Huang, Yongsong; Dupont, Lydie M; Sarnthein, Michael; Hayes, John M; Eglinton, Geoffrey (2000): Mapping of C4 plant input from North West Africa into North East Atlantic sediments. Geochimica et Cosmochimica Acta, 64(20), 3505-3513, https://doi.org/10.1016/S0016-7037(00)00445-2 11139-8bx 12174-15 AEOLD Aeolian dust sample ANT-IV/1c Atlantic Ocean BC BCR BOFS23/7M BOFS23#7 BOFS29/2M BOFS29#2 Box corer Box corer (Reineck) CD53 Cervaro river Charles Darwin D11798#2 D11800#5 D11804#4 D11815#5 D11939#3 D11944#5 D11948#1 D11954#4 D177 D187 DC2 DC23 DI135 DI194 Discovery (1962) Discovery II (1929) East Atlantic eastern Romanche Fracture Zone Equatorial Atlantic FGGE-Equator 79 - First GARP Global Experiment GEOTROPEX 83 NOAMP I Giant box corer GIK12309-2 GIK12326-4 GIK12329-5 GIK12330-1 GIK12344-5 GIK13289-1 GIK13557-1 GIK16004-1 GIK16006-1 GIK16030-1 dataset publication series 2000 ftpangaea https://doi.org/10.1594/PANGAEA.69207610.1016/S0016-7037(00)00445-2 2024-07-24T02:31:42Z Mapping the abundance of 13C in leaf-wax components in surface sediments recovered from the seafloor off northwest Africa (0–35°N) reveals a clear pattern of delta13C distribution, indicating systematic changes in the proportions of terrestrial C3 and C4 plant input. At 20°N latitude, we find that isotopically enriched products characteristic of C4 plants account for more than 50% of the terrigenous inputs. This signal extends westward beneath the path of the dust-laden Sahara Air Layer (SAL). High C4 contributions, apparently carried by January trade winds, also extend far into the Gulf of Guinea. Similar distributions are obtained if summed pollen counts for the Chenopodiaceae-Amaranthaceae and the Poaceae are used as an independent C4 proxy. We conclude that the specificity of the latitudinal distribution of vegetation in North West Africa and the pathways of the wind systems (trade winds and SAL) are responsible for the observed isotopic patterns observed in the surface sediments. Molecular-isotopic maps on the marine-sedimentary time horizons (e.g., during the last glacial maximum) are thus a robust tool for assessing the phytogeographic changes on the tropical and sub-tropical continents, which have important implications for the changes in climatic and atmospheric conditions. Other/Unknown Material North East Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-29.000000,15.890000,41.570000,-2.203333) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
11139-8bx 12174-15 AEOLD Aeolian dust sample ANT-IV/1c Atlantic Ocean BC BCR BOFS23/7M BOFS23#7 BOFS29/2M BOFS29#2 Box corer Box corer (Reineck) CD53 Cervaro river Charles Darwin D11798#2 D11800#5 D11804#4 D11815#5 D11939#3 D11944#5 D11948#1 D11954#4 D177 D187 DC2 DC23 DI135 DI194 Discovery (1962) Discovery II (1929) East Atlantic eastern Romanche Fracture Zone Equatorial Atlantic FGGE-Equator 79 - First GARP Global Experiment GEOTROPEX 83 NOAMP I Giant box corer GIK12309-2 GIK12326-4 GIK12329-5 GIK12330-1 GIK12344-5 GIK13289-1 GIK13557-1 GIK16004-1 GIK16006-1 GIK16030-1 |
spellingShingle |
11139-8bx 12174-15 AEOLD Aeolian dust sample ANT-IV/1c Atlantic Ocean BC BCR BOFS23/7M BOFS23#7 BOFS29/2M BOFS29#2 Box corer Box corer (Reineck) CD53 Cervaro river Charles Darwin D11798#2 D11800#5 D11804#4 D11815#5 D11939#3 D11944#5 D11948#1 D11954#4 D177 D187 DC2 DC23 DI135 DI194 Discovery (1962) Discovery II (1929) East Atlantic eastern Romanche Fracture Zone Equatorial Atlantic FGGE-Equator 79 - First GARP Global Experiment GEOTROPEX 83 NOAMP I Giant box corer GIK12309-2 GIK12326-4 GIK12329-5 GIK12330-1 GIK12344-5 GIK13289-1 GIK13557-1 GIK16004-1 GIK16006-1 GIK16030-1 Huang, Yongsong Dupont, Lydie M Sarnthein, Michael Hayes, John M Eglinton, Geoffrey Mapping of C4 plant input from North West Africa into North East Atlantic sediments |
topic_facet |
11139-8bx 12174-15 AEOLD Aeolian dust sample ANT-IV/1c Atlantic Ocean BC BCR BOFS23/7M BOFS23#7 BOFS29/2M BOFS29#2 Box corer Box corer (Reineck) CD53 Cervaro river Charles Darwin D11798#2 D11800#5 D11804#4 D11815#5 D11939#3 D11944#5 D11948#1 D11954#4 D177 D187 DC2 DC23 DI135 DI194 Discovery (1962) Discovery II (1929) East Atlantic eastern Romanche Fracture Zone Equatorial Atlantic FGGE-Equator 79 - First GARP Global Experiment GEOTROPEX 83 NOAMP I Giant box corer GIK12309-2 GIK12326-4 GIK12329-5 GIK12330-1 GIK12344-5 GIK13289-1 GIK13557-1 GIK16004-1 GIK16006-1 GIK16030-1 |
description |
Mapping the abundance of 13C in leaf-wax components in surface sediments recovered from the seafloor off northwest Africa (0–35°N) reveals a clear pattern of delta13C distribution, indicating systematic changes in the proportions of terrestrial C3 and C4 plant input. At 20°N latitude, we find that isotopically enriched products characteristic of C4 plants account for more than 50% of the terrigenous inputs. This signal extends westward beneath the path of the dust-laden Sahara Air Layer (SAL). High C4 contributions, apparently carried by January trade winds, also extend far into the Gulf of Guinea. Similar distributions are obtained if summed pollen counts for the Chenopodiaceae-Amaranthaceae and the Poaceae are used as an independent C4 proxy. We conclude that the specificity of the latitudinal distribution of vegetation in North West Africa and the pathways of the wind systems (trade winds and SAL) are responsible for the observed isotopic patterns observed in the surface sediments. Molecular-isotopic maps on the marine-sedimentary time horizons (e.g., during the last glacial maximum) are thus a robust tool for assessing the phytogeographic changes on the tropical and sub-tropical continents, which have important implications for the changes in climatic and atmospheric conditions. |
format |
Other/Unknown Material |
author |
Huang, Yongsong Dupont, Lydie M Sarnthein, Michael Hayes, John M Eglinton, Geoffrey |
author_facet |
Huang, Yongsong Dupont, Lydie M Sarnthein, Michael Hayes, John M Eglinton, Geoffrey |
author_sort |
Huang, Yongsong |
title |
Mapping of C4 plant input from North West Africa into North East Atlantic sediments |
title_short |
Mapping of C4 plant input from North West Africa into North East Atlantic sediments |
title_full |
Mapping of C4 plant input from North West Africa into North East Atlantic sediments |
title_fullStr |
Mapping of C4 plant input from North West Africa into North East Atlantic sediments |
title_full_unstemmed |
Mapping of C4 plant input from North West Africa into North East Atlantic sediments |
title_sort |
mapping of c4 plant input from north west africa into north east atlantic sediments |
publisher |
PANGAEA |
publishDate |
2000 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.692076 https://doi.org/10.1594/PANGAEA.692076 |
op_coverage |
MEDIAN LATITUDE: 18.409104 * MEDIAN LONGITUDE: -8.041096 * SOUTH-BOUND LATITUDE: -2.203333 * WEST-BOUND LONGITUDE: -29.000000 * NORTH-BOUND LATITUDE: 41.570000 * EAST-BOUND LONGITUDE: 15.890000 * DATE/TIME START: 1971-01-01T00:00:00 * DATE/TIME END: 1990-10-13T00:00:00 |
long_lat |
ENVELOPE(-29.000000,15.890000,41.570000,-2.203333) |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Supplement to: Huang, Yongsong; Dupont, Lydie M; Sarnthein, Michael; Hayes, John M; Eglinton, Geoffrey (2000): Mapping of C4 plant input from North West Africa into North East Atlantic sediments. Geochimica et Cosmochimica Acta, 64(20), 3505-3513, https://doi.org/10.1016/S0016-7037(00)00445-2 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.692076 https://doi.org/10.1594/PANGAEA.692076 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.69207610.1016/S0016-7037(00)00445-2 |
_version_ |
1810465209044697088 |