DOI: 10.1016/j.palaeo.2012.01.033
论文题名: Structural analysis and paleoenvironmental potential of dog cockle shells (Glycymeris glycymeris) in Brittany, northwest France
作者: Royer C. ; Thébault J. ; Chauvaud L. ; Olivier F.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 373 起始页码: 123
结束页码: 132
语种: 英语
英文关键词: Archives
; Bivalve
; Oxygen isotopes
; Sclerochemistry
; Sclerochronology
; Standardized growth indices
英文摘要: To compensate for the lack of high resolution data on variation in environmental parameters before the establishment of monitoring networks, we evaluated dog cockle shells (Glycymeris glycymeris; Mollusca: Bivalvia) as archives for temperature and climate perturbations such as the North Atlantic Oscillation (NAO) over the last 50years. Oxygen isotope compositions were measured from annual increments of shells collected from the Bay of Brest and the Chausey Islands in northwestern France. Simultaneously, sclerochronological analyses were performed on the same shells. Oxygen isotopic ratios measured in shells collected from the Bay of Brest were compared to in situ temperature and salinity data from monitoring stations and buoys in order to build a specific paleotemperature equation (r2=0.87; p<0.001) for the dog cockle. The specific equation was used to estimate sea surface temperatures around the Chausey Islands between 1966 and 1994. Standardized growth indices (SGI) calculated through sclerochronological methods were strongly correlated to oxygen isotope-derived temperatures. The SGI however did not capture the area's predominant climate pattern, the NAO. This study demonstrates that dog cockle shells can be used for long-term high-resolution reconstructions of past sea surface temperatures. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69817
Appears in Collections: 过去全球变化的重建
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作者单位: Université de Brest, Institut Universitaire Européen de la Mer, Laboratoire des sciences de l'environnement marin (UMR6539 CNRS/IRD/UBO), rue Dumont d'Urville, 29280 Plouzané, France; Muséum National d'Histoire Naturelle, Département Milieux et Peuplements Aquatiques, UMR7208 BOREA MNHN/CNRS/P6/IRD, ISMER/UQAR, 310 allée des Ursulines, CP 3300 Rimouski, QC, G5L 3A1, Canada
Recommended Citation:
Royer C.,Thébault J.,Chauvaud L.,et al. Structural analysis and paleoenvironmental potential of dog cockle shells (Glycymeris glycymeris) in Brittany, northwest France[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,373