ISOTOPE SCLEROCHRONOLOGY AND SEASON OF ANNUAL GROWTH LINE FORMATION IN LIMPET SHELLS (PATELLA VULGATA) FROM WARM- AND COLD-TEMPERATE ZONES IN THE EASTERN NORTH ATLANTIC
ISOTOPE SCLEROCHRONOLOGY AND SEASON OF ANNUAL GROWTH LINE FORMATION IN LIMPET SHELLS (PATELLA VULGATA) FROM WARM- AND COLD-TEMPERATE ZONES IN THE EASTERN NORTH ATLANTIC
复制标题
北大西洋东部暖温带和冷温带帽贝 (Patella Vulgata) 的同位素硬化年代学和年生长线形成季节
DOI：
10.2110/palo.2012.p12-038r
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发表时间：
2013
影响因子：
5.8
通讯作者：
P. Kelley
中科院分区：
文献类型：
--
作者：
D. Surge;Ting Wang;Igor Gutiérrez;P. Kelley
摘要 在北大西洋西部和墨西哥湾，对硬蛤、Mercenaria Mercenaria 和 M.campechiensis 的同位素硬化年代学和实地研究，在纬度梯度上收集，显示了缓慢与快速贝壳增量生长的季节性时间模式。然而，尚不清楚北大西洋东部是否存在类似的模式。欧洲帽贝（Patella vulgata）在北大西洋东部的岩石海岸群落和考古沉积物中含量丰富。因此，它对于古气候和考古研究来说是一个具有潜在价值的档案。我们使用同位素硬化年代学来确定冷温带和暖温带以及这些区域之间边界的贝壳中年度生长线形成的季节时间。对来自冷温带（英国和挪威）的四个贝壳、来自暖温带（西班牙）的五个贝壳和来自边界（英吉利海峡附近）的六个贝壳进行了分析。同位素记录代表了两年到八年的增长。冷温带贝壳在冬季形成年线，暖温带贝壳在夏季形成年线。在边界处发现了混合图案。这种跨纬度梯度增长放缓的季节性时间模式与北大西洋西部的 Mercenaria 研究中显示的模式相似。耐热性是观察到的年生长线形成时间随纬度变化的最可能机制。
ABSTRACT In the western North Atlantic and Gulf of Mexico, isotope sclerochronology and field studies of the hard clams, Mercenaria mercenaria and M. campechiensis, collected across a latitudinal gradient show patterns in the seasonal timing of slow versus fast shell incremental growth. It is unknown, however, if similar patterns exist in the eastern North Atlantic. The European limpet, Patella vulgata, is abundant in rocky shore communities and archaeological deposits along the eastern North Atlantic. As such, it is a potentially valuable archive for paleoclimate and archaeological research. We used isotope sclerochronology to identify the seasonal timing of annual growth line formation in shells from the cold- and warm-temperate zones and at the boundary between these zones. Four shells from the cold-temperate zone (United Kingdom and Norway), five shells from the warm-temperate zone (Spain), and six shells from the boundary (near the English Channel) were analyzed. The isotopic records represent between two and eight years of growth. Cold-temperate shells formed annual lines in winter, and warm-temperate shells produced annual lines in summer. A mixed pattern was found at the boundary. This pattern in the seasonal timing of slowed growth across a latitudinal gradient is similar to that shown in studies of Mercenaria in the western North Atlantic. Thermal tolerance is the most likely mechanism for the observed changes in the timing of annual growth line formation with latitude.