气候变化领域集成服务门户(CCPortal): Pollen distribution of sediment core MD96-2048 from the Western Indian Ocean

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.771285
	Pollen distribution of sediment core MD96-2048 from the Western Indian Ocean
	Dupont; Lydie M; Caley; Thibaut; Kim; Jung-Hyun; Castañeda; Isla S; Malaizé; Bruno; Giraudeau; Jaques
发布日期	2011-11-10
数据集类型	dataset
英文简介	Glacial-interglacial fluctuations in the vegetation of South Africa might elucidate the climate system at the edge of the tropics between the Indian and Atlantic Oceans. However, vegetation records covering a full glacial cycle have only been published from the eastern South Atlantic. We present a pollen record of the marine core MD96-2048 retrieved by the Marion Dufresne from the Indian Ocean ~120 km south of the Limpopo River mouth. The sedimentation at the site is slow and continuous. The upper 6 m (spanning the past 342 Ka) have been analysed for pollen and spores at millennial resolution. The terrestrial pollen assemblages indicate that during interglacials, the vegetation of eastern South Africa and southern Mozambique largely consisted of evergreen and deciduous forests. During glacials open mountainous scrubland dominated. Montane forest with Podocarpus extended during humid periods was favoured by strong local insolation. Correlation with the sea surface temperature record of the same core indicates that the extension of mountainous scrubland primarily depends on sea surface temperatures of the Agulhas Current. Our record corroborates terrestrial evidence of the extension of open mountainous scrubland (including fynbos-like species of the high-altitude Grassland biome) for the last glacial as well as for other glacial periods of the past 300 Ka.
空间范围	Latitude: -26.166700 * Longitude: 34.016700
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/228137
推荐引用方式 GB/T 7714	Dupont,Lydie M,Caley,et al. Pollen distribution of sediment core MD96-2048 from the Western Indian Ocean.2011-11-10.https://doi.org/10.1594/PANGAEA.771285.