Age, pollen and spores of ODP Site 175-1082, supplement to: Dupont, Lydie M (2006): Late Pliocene vegetation and climate in Namibia (southern Africa) derived from palynology of ODP Site 1082. Geochemistry, Geophysics, Geosystems, 7(1), Q05007
The present-day condition of bipolar glaciation characterized by rapid and large climate fluctuations began at the end of the Pliocene with the intensification of the Northern Hemisphere continental glaciations. The global cooling steps of the late Pliocene have been documented in numerous studies o...
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Format: | Dataset |
Language: | English |
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PANGAEA - Data Publisher for Earth & Environmental Science
2006
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Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.315843 https://doi.pangaea.de/10.1594/PANGAEA.315843 |
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ftdatacite:10.1594/pangaea.315843 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
AGE DEPTH, sediment/rock Depth, composite Sample code/label Volume Marker, added Marker, found Pollen total Fern spores Botryococcus Pediastrum Spores, monolete Pteridium Pteris Tetraploa aristata conidia Spores, trilete Spores, trilete reticulate Abrus Abutilon Acacia/Parkia Acanthaceae Aizoaceae Alchornea Allanblackia Aloe-type Antidesma-type Arctotis-type Arecaceae Asphodelus Balanites Baphia-type Barleria Bignoniaceae Blepharis Blighia-type Bombax Borassus-type Boscia-type Bosqueia Boswellia Brachystegia Brassicaceae Bridelia Burkea Butyrospermum Centaurea Africa Cadaba Calligonum Calycobolus-type Caperonia Caryophyllaceae Cassia-type Celastraceae/Hippocrateaceae Celtis Amaranthaceae/Chenopodiaceae Chrozophora Chrysophyllum Cissus Clematis-type Cleome Clutia Cnestis-type Coccinia Coffea-type Cola cordifolia Combretaceae/Melastomataceae Commiphora Corchorus Crossopteryx Cucurbitaceae Cuviera Cyperaceae undifferentiated Daisy-type Daniellia-type Detarium Dialium-type Diodia-type Diospyros Dodonaea viscosa Dorstenia Dracaena Ecbolium Entada-type Ericaceae undifferentiated Erythrina Eugenia/Syzygium Euphorbia-type Euphorbiaceae undifferentiated Fagonia Gazania-type Colophospermum mopane Gomphrena-type Grewia Araliaceae undifferentiated Heliotropium Heritiera-type Hermannia Hibiscus-type Hygrophila-type Hymenocardia Hyphaene Hypoestes type Icacinaceae undifferentiated Ilex cf.. mitis Indeterminata/varia Indigofera-type Iodes Irvingia Isoberlinia-type Ixora Justicia/Monechma Kedrostis Khaya Klaineanthus Lannea Leea Compositae Liguliflorae Liliaceae undifferentiated Lophira Luffa Lythraceae Maerua-type Mallotus Manilkara Meliaceae Melochia Monopetalanthus Morinda Myrica Neurada/Grielum Newbouldia Nitraria Nothofagus Nyctaginaceae Nymphaea Ocimum Olea Olea capensis Ormocarpum Polygonum senegalense-type Pandanus Papilionoideae Parinari Pavetta Peganum Pelargonium Pentas Pentaclethra Pentzia/Cotula-type Afrormosia Petalidium Phyllanthus Piliostigma Plantago Plumbaginaceae undifferentiated Poaceae undifferentiated Podocarpus Polycarpon Polygala-type Polygonum aviculare-type Portulaca Priva Protea Pseudoprosopis Pterocarpus Pycnanthus Raphia Restionaceae Rhamnaceae undifferentiated Rhizophora Rhus-type Rhynchosia-type Rubiaceae undifferentiated Rubiaceae tetrade Rumex Sabicea Salvadora persica Sapotaceae Jasminum Sesbania-type Solanum-type Sopubia Spathodea Borreria Stachytarpheta Sterculiaceae Sterculia-type Stereospermum Stipularia africana Stoebe-type Strophanthus-type Strychnos Tamarindus/Cryptosepalum Tapinanthus Tarchonanthus/Artemisia-type Telephium Tephrosia Teucrium Thesium Thymelaeaceae Tribulus Triumfetta Compositae Tubuliflorae Typha angustifolia-type Uapaca Urticaceae Compositae Vernonieae Viscum Welwitschia Zanthoxylum Zygophyllum Composite Core Intercore correlation DSDP/ODP/IODP sample designation Counting, palynology Leg175 Joides Resolution Center for Marine Environmental Sciences MARUM Ocean Drilling Program ODP |
spellingShingle |
AGE DEPTH, sediment/rock Depth, composite Sample code/label Volume Marker, added Marker, found Pollen total Fern spores Botryococcus Pediastrum Spores, monolete Pteridium Pteris Tetraploa aristata conidia Spores, trilete Spores, trilete reticulate Abrus Abutilon Acacia/Parkia Acanthaceae Aizoaceae Alchornea Allanblackia Aloe-type Antidesma-type Arctotis-type Arecaceae Asphodelus Balanites Baphia-type Barleria Bignoniaceae Blepharis Blighia-type Bombax Borassus-type Boscia-type Bosqueia Boswellia Brachystegia Brassicaceae Bridelia Burkea Butyrospermum Centaurea Africa Cadaba Calligonum Calycobolus-type Caperonia Caryophyllaceae Cassia-type Celastraceae/Hippocrateaceae Celtis Amaranthaceae/Chenopodiaceae Chrozophora Chrysophyllum Cissus Clematis-type Cleome Clutia Cnestis-type Coccinia Coffea-type Cola cordifolia Combretaceae/Melastomataceae Commiphora Corchorus Crossopteryx Cucurbitaceae Cuviera Cyperaceae undifferentiated Daisy-type Daniellia-type Detarium Dialium-type Diodia-type Diospyros Dodonaea viscosa Dorstenia Dracaena Ecbolium Entada-type Ericaceae undifferentiated Erythrina Eugenia/Syzygium Euphorbia-type Euphorbiaceae undifferentiated Fagonia Gazania-type Colophospermum mopane Gomphrena-type Grewia Araliaceae undifferentiated Heliotropium Heritiera-type Hermannia Hibiscus-type Hygrophila-type Hymenocardia Hyphaene Hypoestes type Icacinaceae undifferentiated Ilex cf.. mitis Indeterminata/varia Indigofera-type Iodes Irvingia Isoberlinia-type Ixora Justicia/Monechma Kedrostis Khaya Klaineanthus Lannea Leea Compositae Liguliflorae Liliaceae undifferentiated Lophira Luffa Lythraceae Maerua-type Mallotus Manilkara Meliaceae Melochia Monopetalanthus Morinda Myrica Neurada/Grielum Newbouldia Nitraria Nothofagus Nyctaginaceae Nymphaea Ocimum Olea Olea capensis Ormocarpum Polygonum senegalense-type Pandanus Papilionoideae Parinari Pavetta Peganum Pelargonium Pentas Pentaclethra Pentzia/Cotula-type Afrormosia Petalidium Phyllanthus Piliostigma Plantago Plumbaginaceae undifferentiated Poaceae undifferentiated Podocarpus Polycarpon Polygala-type Polygonum aviculare-type Portulaca Priva Protea Pseudoprosopis Pterocarpus Pycnanthus Raphia Restionaceae Rhamnaceae undifferentiated Rhizophora Rhus-type Rhynchosia-type Rubiaceae undifferentiated Rubiaceae tetrade Rumex Sabicea Salvadora persica Sapotaceae Jasminum Sesbania-type Solanum-type Sopubia Spathodea Borreria Stachytarpheta Sterculiaceae Sterculia-type Stereospermum Stipularia africana Stoebe-type Strophanthus-type Strychnos Tamarindus/Cryptosepalum Tapinanthus Tarchonanthus/Artemisia-type Telephium Tephrosia Teucrium Thesium Thymelaeaceae Tribulus Triumfetta Compositae Tubuliflorae Typha angustifolia-type Uapaca Urticaceae Compositae Vernonieae Viscum Welwitschia Zanthoxylum Zygophyllum Composite Core Intercore correlation DSDP/ODP/IODP sample designation Counting, palynology Leg175 Joides Resolution Center for Marine Environmental Sciences MARUM Ocean Drilling Program ODP Dupont, Lydie M Age, pollen and spores of ODP Site 175-1082, supplement to: Dupont, Lydie M (2006): Late Pliocene vegetation and climate in Namibia (southern Africa) derived from palynology of ODP Site 1082. Geochemistry, Geophysics, Geosystems, 7(1), Q05007 |
topic_facet |
AGE DEPTH, sediment/rock Depth, composite Sample code/label Volume Marker, added Marker, found Pollen total Fern spores Botryococcus Pediastrum Spores, monolete Pteridium Pteris Tetraploa aristata conidia Spores, trilete Spores, trilete reticulate Abrus Abutilon Acacia/Parkia Acanthaceae Aizoaceae Alchornea Allanblackia Aloe-type Antidesma-type Arctotis-type Arecaceae Asphodelus Balanites Baphia-type Barleria Bignoniaceae Blepharis Blighia-type Bombax Borassus-type Boscia-type Bosqueia Boswellia Brachystegia Brassicaceae Bridelia Burkea Butyrospermum Centaurea Africa Cadaba Calligonum Calycobolus-type Caperonia Caryophyllaceae Cassia-type Celastraceae/Hippocrateaceae Celtis Amaranthaceae/Chenopodiaceae Chrozophora Chrysophyllum Cissus Clematis-type Cleome Clutia Cnestis-type Coccinia Coffea-type Cola cordifolia Combretaceae/Melastomataceae Commiphora Corchorus Crossopteryx Cucurbitaceae Cuviera Cyperaceae undifferentiated Daisy-type Daniellia-type Detarium Dialium-type Diodia-type Diospyros Dodonaea viscosa Dorstenia Dracaena Ecbolium Entada-type Ericaceae undifferentiated Erythrina Eugenia/Syzygium Euphorbia-type Euphorbiaceae undifferentiated Fagonia Gazania-type Colophospermum mopane Gomphrena-type Grewia Araliaceae undifferentiated Heliotropium Heritiera-type Hermannia Hibiscus-type Hygrophila-type Hymenocardia Hyphaene Hypoestes type Icacinaceae undifferentiated Ilex cf.. mitis Indeterminata/varia Indigofera-type Iodes Irvingia Isoberlinia-type Ixora Justicia/Monechma Kedrostis Khaya Klaineanthus Lannea Leea Compositae Liguliflorae Liliaceae undifferentiated Lophira Luffa Lythraceae Maerua-type Mallotus Manilkara Meliaceae Melochia Monopetalanthus Morinda Myrica Neurada/Grielum Newbouldia Nitraria Nothofagus Nyctaginaceae Nymphaea Ocimum Olea Olea capensis Ormocarpum Polygonum senegalense-type Pandanus Papilionoideae Parinari Pavetta Peganum Pelargonium Pentas Pentaclethra Pentzia/Cotula-type Afrormosia Petalidium Phyllanthus Piliostigma Plantago Plumbaginaceae undifferentiated Poaceae undifferentiated Podocarpus Polycarpon Polygala-type Polygonum aviculare-type Portulaca Priva Protea Pseudoprosopis Pterocarpus Pycnanthus Raphia Restionaceae Rhamnaceae undifferentiated Rhizophora Rhus-type Rhynchosia-type Rubiaceae undifferentiated Rubiaceae tetrade Rumex Sabicea Salvadora persica Sapotaceae Jasminum Sesbania-type Solanum-type Sopubia Spathodea Borreria Stachytarpheta Sterculiaceae Sterculia-type Stereospermum Stipularia africana Stoebe-type Strophanthus-type Strychnos Tamarindus/Cryptosepalum Tapinanthus Tarchonanthus/Artemisia-type Telephium Tephrosia Teucrium Thesium Thymelaeaceae Tribulus Triumfetta Compositae Tubuliflorae Typha angustifolia-type Uapaca Urticaceae Compositae Vernonieae Viscum Welwitschia Zanthoxylum Zygophyllum Composite Core Intercore correlation DSDP/ODP/IODP sample designation Counting, palynology Leg175 Joides Resolution Center for Marine Environmental Sciences MARUM Ocean Drilling Program ODP |
description |
The present-day condition of bipolar glaciation characterized by rapid and large climate fluctuations began at the end of the Pliocene with the intensification of the Northern Hemisphere continental glaciations. The global cooling steps of the late Pliocene have been documented in numerous studies of Ocean Drilling Program (ODP) sites from the Northern Hemisphere. However, the interactions between oceans and between land and ocean during these cooling steps are poorly known. In particular, data from the Southern Hemisphere are lacking. Therefore I investigated the pollen of ODP Site 1082 in the southeast Atlantic Ocean in order to obtain a high-resolution record of vegetation change in Namibia between 3.4 and 1.8 Ma. Four phases of vegetation development are inferred that are connected to global climate change. (1) Before 3 Ma, extensive, rather open grass-rich savannahs with mopane trees existed in Namibia, but the extension of desert and semidesert vegetation was still restricted. (2) Increase of winter rainfall dependent Renosterveld-like vegetation occurred between 3.1 and 2.2 Ma connected to strong advection of polar waters along the Namibian coast and a northward shift of the Polar Front Zone in the Southern Ocean. (3) Climatically induced fluctuations became stronger between 2.7 and 2.2 Ma and semiarid areas extended during glacial periods probably as the result of an increased pole-equator thermal gradient and consequently globally enhanced atmospheric circulation. (4) Aridification and climatic variability further increased after 2.2 Ma, when the Polar Front Zone migrated southward and the influence of Atlantic moisture brought by the westerlies to southern Africa declined. It is concluded that the positions of the frontal systems in the Southern Ocean which determine the locations of the high-pressure cells over the South Atlantic and the southern Indian Ocean have a strong influence on the climate of southern Africa in contrast to the climate of northwest and central Africa, which is dominated by the Saharan low-pressure cell. |
format |
Dataset |
author |
Dupont, Lydie M |
author_facet |
Dupont, Lydie M |
author_sort |
Dupont, Lydie M |
title |
Age, pollen and spores of ODP Site 175-1082, supplement to: Dupont, Lydie M (2006): Late Pliocene vegetation and climate in Namibia (southern Africa) derived from palynology of ODP Site 1082. Geochemistry, Geophysics, Geosystems, 7(1), Q05007 |
title_short |
Age, pollen and spores of ODP Site 175-1082, supplement to: Dupont, Lydie M (2006): Late Pliocene vegetation and climate in Namibia (southern Africa) derived from palynology of ODP Site 1082. Geochemistry, Geophysics, Geosystems, 7(1), Q05007 |
title_full |
Age, pollen and spores of ODP Site 175-1082, supplement to: Dupont, Lydie M (2006): Late Pliocene vegetation and climate in Namibia (southern Africa) derived from palynology of ODP Site 1082. Geochemistry, Geophysics, Geosystems, 7(1), Q05007 |
title_fullStr |
Age, pollen and spores of ODP Site 175-1082, supplement to: Dupont, Lydie M (2006): Late Pliocene vegetation and climate in Namibia (southern Africa) derived from palynology of ODP Site 1082. Geochemistry, Geophysics, Geosystems, 7(1), Q05007 |
title_full_unstemmed |
Age, pollen and spores of ODP Site 175-1082, supplement to: Dupont, Lydie M (2006): Late Pliocene vegetation and climate in Namibia (southern Africa) derived from palynology of ODP Site 1082. Geochemistry, Geophysics, Geosystems, 7(1), Q05007 |
title_sort |
age, pollen and spores of odp site 175-1082, supplement to: dupont, lydie m (2006): late pliocene vegetation and climate in namibia (southern africa) derived from palynology of odp site 1082. geochemistry, geophysics, geosystems, 7(1), q05007 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2006 |
url |
https://dx.doi.org/10.1594/pangaea.315843 https://doi.pangaea.de/10.1594/PANGAEA.315843 |
long_lat |
ENVELOPE(135.167,135.167,60.567,60.567) |
geographic |
Southern Ocean Indian Khaya |
geographic_facet |
Southern Ocean Indian Khaya |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://dx.doi.org/10.1029/2005gc001208 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.315843 https://doi.org/10.1029/2005gc001208 |
_version_ |
1766207662734704640 |
spelling |
ftdatacite:10.1594/pangaea.315843 2023-05-15T18:25:56+02:00 Age, pollen and spores of ODP Site 175-1082, supplement to: Dupont, Lydie M (2006): Late Pliocene vegetation and climate in Namibia (southern Africa) derived from palynology of ODP Site 1082. Geochemistry, Geophysics, Geosystems, 7(1), Q05007 Dupont, Lydie M 2006 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.315843 https://doi.pangaea.de/10.1594/PANGAEA.315843 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/2005gc001208 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY AGE DEPTH, sediment/rock Depth, composite Sample code/label Volume Marker, added Marker, found Pollen total Fern spores Botryococcus Pediastrum Spores, monolete Pteridium Pteris Tetraploa aristata conidia Spores, trilete Spores, trilete reticulate Abrus Abutilon Acacia/Parkia Acanthaceae Aizoaceae Alchornea Allanblackia Aloe-type Antidesma-type Arctotis-type Arecaceae Asphodelus Balanites Baphia-type Barleria Bignoniaceae Blepharis Blighia-type Bombax Borassus-type Boscia-type Bosqueia Boswellia Brachystegia Brassicaceae Bridelia Burkea Butyrospermum Centaurea Africa Cadaba Calligonum Calycobolus-type Caperonia Caryophyllaceae Cassia-type Celastraceae/Hippocrateaceae Celtis Amaranthaceae/Chenopodiaceae Chrozophora Chrysophyllum Cissus Clematis-type Cleome Clutia Cnestis-type Coccinia Coffea-type Cola cordifolia Combretaceae/Melastomataceae Commiphora Corchorus Crossopteryx Cucurbitaceae Cuviera Cyperaceae undifferentiated Daisy-type Daniellia-type Detarium Dialium-type Diodia-type Diospyros Dodonaea viscosa Dorstenia Dracaena Ecbolium Entada-type Ericaceae undifferentiated Erythrina Eugenia/Syzygium Euphorbia-type Euphorbiaceae undifferentiated Fagonia Gazania-type Colophospermum mopane Gomphrena-type Grewia Araliaceae undifferentiated Heliotropium Heritiera-type Hermannia Hibiscus-type Hygrophila-type Hymenocardia Hyphaene Hypoestes type Icacinaceae undifferentiated Ilex cf.. mitis Indeterminata/varia Indigofera-type Iodes Irvingia Isoberlinia-type Ixora Justicia/Monechma Kedrostis Khaya Klaineanthus Lannea Leea Compositae Liguliflorae Liliaceae undifferentiated Lophira Luffa Lythraceae Maerua-type Mallotus Manilkara Meliaceae Melochia Monopetalanthus Morinda Myrica Neurada/Grielum Newbouldia Nitraria Nothofagus Nyctaginaceae Nymphaea Ocimum Olea Olea capensis Ormocarpum Polygonum senegalense-type Pandanus Papilionoideae Parinari Pavetta Peganum Pelargonium Pentas Pentaclethra Pentzia/Cotula-type Afrormosia Petalidium Phyllanthus Piliostigma Plantago Plumbaginaceae undifferentiated Poaceae undifferentiated Podocarpus Polycarpon Polygala-type Polygonum aviculare-type Portulaca Priva Protea Pseudoprosopis Pterocarpus Pycnanthus Raphia Restionaceae Rhamnaceae undifferentiated Rhizophora Rhus-type Rhynchosia-type Rubiaceae undifferentiated Rubiaceae tetrade Rumex Sabicea Salvadora persica Sapotaceae Jasminum Sesbania-type Solanum-type Sopubia Spathodea Borreria Stachytarpheta Sterculiaceae Sterculia-type Stereospermum Stipularia africana Stoebe-type Strophanthus-type Strychnos Tamarindus/Cryptosepalum Tapinanthus Tarchonanthus/Artemisia-type Telephium Tephrosia Teucrium Thesium Thymelaeaceae Tribulus Triumfetta Compositae Tubuliflorae Typha angustifolia-type Uapaca Urticaceae Compositae Vernonieae Viscum Welwitschia Zanthoxylum Zygophyllum Composite Core Intercore correlation DSDP/ODP/IODP sample designation Counting, palynology Leg175 Joides Resolution Center for Marine Environmental Sciences MARUM Ocean Drilling Program ODP Supplementary Dataset dataset Dataset 2006 ftdatacite https://doi.org/10.1594/pangaea.315843 https://doi.org/10.1029/2005gc001208 2022-02-08T16:24:46Z The present-day condition of bipolar glaciation characterized by rapid and large climate fluctuations began at the end of the Pliocene with the intensification of the Northern Hemisphere continental glaciations. The global cooling steps of the late Pliocene have been documented in numerous studies of Ocean Drilling Program (ODP) sites from the Northern Hemisphere. However, the interactions between oceans and between land and ocean during these cooling steps are poorly known. In particular, data from the Southern Hemisphere are lacking. Therefore I investigated the pollen of ODP Site 1082 in the southeast Atlantic Ocean in order to obtain a high-resolution record of vegetation change in Namibia between 3.4 and 1.8 Ma. Four phases of vegetation development are inferred that are connected to global climate change. (1) Before 3 Ma, extensive, rather open grass-rich savannahs with mopane trees existed in Namibia, but the extension of desert and semidesert vegetation was still restricted. (2) Increase of winter rainfall dependent Renosterveld-like vegetation occurred between 3.1 and 2.2 Ma connected to strong advection of polar waters along the Namibian coast and a northward shift of the Polar Front Zone in the Southern Ocean. (3) Climatically induced fluctuations became stronger between 2.7 and 2.2 Ma and semiarid areas extended during glacial periods probably as the result of an increased pole-equator thermal gradient and consequently globally enhanced atmospheric circulation. (4) Aridification and climatic variability further increased after 2.2 Ma, when the Polar Front Zone migrated southward and the influence of Atlantic moisture brought by the westerlies to southern Africa declined. It is concluded that the positions of the frontal systems in the Southern Ocean which determine the locations of the high-pressure cells over the South Atlantic and the southern Indian Ocean have a strong influence on the climate of southern Africa in contrast to the climate of northwest and central Africa, which is dominated by the Saharan low-pressure cell. Dataset Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Southern Ocean Indian Khaya ENVELOPE(135.167,135.167,60.567,60.567) |