globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2015.01.006
论文题名:
Mid and late Holocene multiproxy analysis of environmental changes linked to sea-level fluctuation and climate variability of the Río de la Plata estuary
作者: Mourelle D.; Prieto A.R.; Pérez L.; García-Rodríguez F.; Borel C.M.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 421
起始页码: 75
结束页码: 88
语种: 英语
英文关键词: Argentina ; Diatoms ; Holocene sea-level change ; Non-pollen palynomorphs (NPPs) ; Pollen ; Uruguay
英文摘要: In the present study, we carried out pollen, diatom and other palynomorph analyses from a sedimentary sequence from the marshes of Arroyo Solís Grande, in the Río de la Plata northeastern coast (Uruguay), and compared the results with a regional model of surface pollen-vegetation relationship from the Atlantic coastal salt marshes (30°-37° S). Results indicated that salt marsh vegetation developed around the estuary between 8000 and 5100. cal. yr BP, as the sea level rose and reached the Holocene sea-level highstand. Brackish marshes around the estuary between 5100 and 2900. cal. yr BP reflect the late Holocene sea-level fall and associated increased input of freshwater. Brackish marshes and shallow salt pond environments between 2900 and 1000. cal. yr BP are most probably linked to the Paraná delta formation and a further sea-level fall. Present-day marshes behind the sand bar characterize the last 1000. cal. yr BP. The integration of our results with multiproxy records from the Río de la Plata southern coast (Argentina) and from the coastal plain of the southern Atlantic margin of South America (30°-37° S) revealed that marine influence during the maximum sea-level highstand resulted in the development of vegetation similar to that of the geographical region. However, after ca. 3000. cal. yr BP, local differentiation related to different climate and geomorphology occurred at each area, thus resulting in the establishment of different modern plant communities at different times during the late Holocene. © 2015 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69026
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作者单位: IIMyC, CONICET, Universidad Nacional de Mar del Plata, Facultad de Ciencias Exactas y Naturales, Laboratorio de Paleoecología y Palinología, Funes 3250, Mar del Plata, Argentina; Universidad de la República, Facultad de Ciencias, Sección Oceanología, Iguá 4225, Montevideo, Uruguay; Centro Universitario Regional Este, CURE-Rocha, Uruguay; INGEOSUR CONICET, Universidad Nacional del Sur, Departamento de Geología, San Juan 670, Bahía Blanca, Argentina

Recommended Citation:
Mourelle D.,Prieto A.R.,Pérez L.,et al. Mid and late Holocene multiproxy analysis of environmental changes linked to sea-level fluctuation and climate variability of the Río de la Plata estuary[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,421
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