A ‘clam-ring’ master-chronology constructed from a short-lived bivalve mollusc from the northern Gulf of California, USA
A ‘clam-ring’ master-chronology constructed from a short-lived bivalve mollusc from the northern Gulf of California, USA
复制标题
DOI：
10.1191/0959683603hl593rp
复制
发表时间：
2003-01
期刊：
影响因子：
--
通讯作者：
B. Schöne
中科院分区：
文献类型：
--
作者：
B. Schöne
对67种潮间双壳类软体动物的年生长量宽度时间序列进行了去趋势化和标准化处理。fluctifraga和C.来自加州湾北方的10种加州藻被串在一起，形成了一个涵盖公元1982年至1999年期间的主年表。在1988-99年期间，标准化年生长率与夏季海面温度和河流流量之间存在高度正相关关系;并且在平均相对年生长率的变异中，有63-76%的变异是由Chione spp.是由温度和河水流量来解释的七个死亡收集的标本交叉日期与主年表允许重建的一年孵化和死亡的这些贝壳。死亡收集的标本纳入主年表改善了相关统计略有改善。物种相关的增长差异并不显着，但在增长率的地理差异发生：个人在科罗拉多河口增长缓慢，当大量的淡水到达墨西哥湾。这项研究表明，即使是短命的软体动物（平均6-10岁）也可以用来建立环境和气候历史的主年表。
Age-detrended and standardized annual growth increment width time series of 67 live-collected intertidal bivalve molluscs of the species Chione cortezi, C. fluctifraga and C. californiensis from the northern Gulf of California were strung together to form a master-chronology that covers the period from ad 1982 to 1999. A high positive correlation was found between standardized annual growth rates and summer sea-surface temperatures and river flow volume in the period 1988–99; and 63–76% of the variation in mean relative annual growth rates of Chione spp. is explained by temperature and river flow. Seven dead-collected specimens were cross-dated with the master-chronology permitting the reconstruction of the year of hatching and death for these shells. The incorporation of dead-collected specimens in the master-chronology improved the corre lation statistics slightly. Species-related growth differences were not significant, but geographic differences in growth rates occur: individuals at the Colorado River mouth grew more slowly when large amounts of fresh water reached the Gulf. This study demonstrates that even short-lived molluscs (average 6–10 years old) can be used to build a master-chronology of environmental and climatic history.