A Long-Term Growth Record Derived from Arctica Islandica (Mollusca, Bivalvia) from the Fladen Ground (Northern North Sea)
A Long-Term Growth Record Derived from Arctica Islandica (Mollusca, Bivalvia) from the Fladen Ground (Northern North Sea)
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来自 Fladen Ground（北海北部）的 Arctica Islandica（软体动物、双壳类）的长期生长记录
DOI：
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发表时间：
1997
影响因子：
1.2
通讯作者：
P. Wilde
中科院分区：
文献类型：
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作者：
R. Witbaard;G. Duineveld;P. Wilde
利用每年沉积的内部生长线，对北海北方的软体动物Arctica islandica（Mollusca，Bivalvia）贝壳生长的长期变化进行了回顾性评估。相对年轻的标本产生了详细的逐年年表，而年龄超过30岁的标本的生长记录产生了一个时间序列的长度超过100年。长期增长趋势表明，增长低于和高于预期的时期明显交替。可以看出一个33年的长周期。自20世纪60年代以来，北极星附近两个地点的生长模式是相反的，而在1960年之前的时期，它们彼此相似。
Long-term variations in shell growth of the mollusc Arctica islandica (Mollusca, Bivalvia) from the northern North Sea have been assessed retrospectively using the annually deposited internal growth lines. Relatively young specimens yielded a detailed year-to-year chronology while the growth record of specimens older than 30 y yielded a time series with a length exceeding 100 years. The long-term growth trends demonstrated a marked alternating sequence of periods in which growth was below and above expectation. A 33-y long cycle could be discerned. Since the 1960s the growth patterns in Arctica from two nearby locations were opposite, while they resembled each other in the period before 1960.