| Type |
Article |
| Date |
2008-11 |
| Language |
English |
| Author(s) |
Fletcher William J.1, Goni Maria Fernanda Sanchez1 |
| Affiliation(s) |
1 : Univ Bordeaux 1, CNRS, EPOC, UMR 5805,Ecole Prat Hautes Etud, F-33405 Talence, France. |
| Source |
Quaternary Research (0033-5894) (Academic Press Inc Elsevier Science), 2008-11 , Vol. 70 , N. 3 , P. 451-464 |
| DOI |
10.1016/j.yqres.2008.07.002 |
| WOS© Times Cited |
302 |
| Keyword(s) |
Marine palynology, Land-sea correlation, Iberian margin, Mediterranean region, Dansgaard-Oeschger variability, Heinrich events, LGM, Holocene, Precession |
| Abstract |
High-resolution pollen analysis of Alboran Sea Core MD95-2043 provides a 48-ka continuous vegetation record that can be directly correlated with sea surface and deep-water changes. The reliability of this record is supported by comparison with that of Padul (Sierra Nevada, Spain). Marine Isotope Stage (MIS) 3 was characterised by fluctuations in Quercus forest cover in response to Dansgaard-Oeschger climate variability. MIS 2 was characterised by the dominance of semi-desert vegetation. Despite overall dry and cold conditions during MIS 2, Heinrich events (HEs) 2 and 1 were distinguished from the last glacial maximum by more intensely and conditions. Taxon-specific vegetation responses to a tripartite climatic structure within the HEs are observed. In MIS 1, the Bolling-Allerod was marked by rapid afforestation, while a re-expansion of semi-desert environments occurred during the Younger Dryas. The maximum development of mixed Quercus forest occurred between 11.7 and 5.4 cal ka BP, with forest decline since 5.4 cal ka BP. On orbital timescales, a long-term expansion of semi-desert vegetation from MIS 3 into MIS 2 reflects global ice-volume trends, while Holocene arboreal decline reflects summer insolation decrease. The influence of precession on the amplitude of forest development and vegetation composition is also detected. |
| Full Text |
| File |
Pages |
Size |
Access |
| Publisher's official version |
14 |
2 MB |
Open access |
|
