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| Farmer, Jesse; Hertzberg, Jennifer; Cardinal, Damien; Fietz, Susanne; Hendry, Katharine; Jaccard, Sam; Paytan, Adina; Rafter, Patrick; Ren, Haojia; Somes, Christopher; Sutton, Jill; Geotraces Pages Biological Productivity Working Group Members,. |
| Biological productivity in the ocean directly influences the partitioning of carbon between the atmosphere and ocean interior, thereby controlling the distributions of many elements and their isotopes in the ocean. Through this carbon cycle feedback, changing ocean productivity has long been hypothesized as a key pathway for modulating past atmospheric carbon dioxide levels and hence global climate. To reconstruct climate impacts from temporal changes in paleoproductivity, robust proxies are needed to test the connection between past ocean productivity, nutrient biogeochemistry, ocean circulation and climate. Here we compile water column carbon (C), nitrogen (N) and silicon (Si) stable isotopes from GEOTRACES-era data in four key ocean regions to review... |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00649/76114/77076.pdf |
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| Cortes Sanchez, Miguel; Jimenez Espejo, Francisco J.; Simon Vallejo, Maria D.; Gibaja Bao, Juan F.; Carvalho, Antonio Faustino; Martinez-ruiz, Francisca; Rodrigo Gamiz, Marta; Flores, Jose-abel; Paytan, Adina; Lopez Saez, Jose A.; Pena-chocarro, Leonor; Carrion, Jose S.; Morales Muniz, Arturo; Rosello Izquierdo, Eufrasia; Riquelme Cantal, Jose A.; Dean, Rebecca M.; Salgueiro, Emilia; Martinez Sanchez, Rafael M.; De La Rubia De Gracia, Juan J.; Lozano Francisco, Maria C.; Vera Pelaez, Jose L.; Llorente Rodriguez, Laura; Bicho, Nuno F.. |
| New data and a review of historiographic information from Neolithic sites of the Malaga and Algarve coasts (southern Iberian Peninsula) and from the Maghreb (North Africa) reveal the existence of a Neolithic settlement at least from 7.5 cal ka BP. The agricultural and pastoralist food producing economy of that population rapidly replaced the coastal economies of the Mesolithic populations. The timing of this population and economic turnover coincided with major changes in the continental and marine ecosystems, including upwelling intensity, sea-level changes and increased aridity in the Sahara and along the Iberian coast. These changes likely impacted the subsistence strategies of the Mesolithic populations along the Iberian seascapes and resulted in... |
| Tipo: Text |
Palavras-chave: Abrupt climate change; Mesolithic-Neolithic transition; South Iberia; Holocene; Migration; Hunter-fisher-gatherers; Paleoceanography. |
| Ano: 2012 |
URL: https://archimer.ifremer.fr/doc/00266/37678/35767.pdf |
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