Dynamics and growth of a bivalve, Abra tenuis, at the northern edge of its distribution
Dynamics and growth of a bivalve, Abra tenuis, at the northern edge of its distribution
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双壳类 Abra tenuis 分布北部边缘的动态和生长
DOI：
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发表时间：
1993
影响因子：
1.2
通讯作者：
J. Beukema
中科院分区：
文献类型：
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作者：
R. Dekker;J. Beukema
小型双壳类的阿布拉网球（Montagu）（双壳类：Semelidae）在荷兰/德国边境附近的瓦登海（Wadden Sea）达到其活动范围的东北边缘。在瓦登海，它仅限于靠近高水位的狭窄潮间带。报告的数据来自瓦登海最西南部Balgzand的一个种群，该种群已被监测了20年。这一种群的密度波动很大，在连续三个严冬之后似乎消失了三年多。在温和的冬天，成年人的越冬存活率高于寒冷的冬天，在所有比平均温度低的冬天，成年人的越冬存活率接近于零。招募在温暖的夏天比在寒冷的夏天。在温暖的春夏季比寒冷的生长更快。在温暖的年份，生长率高于更南部的地区，最大尺寸和寿命的值相对较高。
The small bivalve Abra tennis (Montagu) (Bivalvia: Semelidae) reaches the north-eastern edge of its range in the Wadden Sea near the Dutch/German border. In the Wadden Sea it is restricted to a narrow intertidal zone close to the high-water level. Data are reported from a population at Balgzand, in the south-westernmost part of the Wadden Sea, which has been monitored for two decades. This population showed a strongly fluctuating density and was seemingly absent for more than three years following three severe winters in succession. Over-winter survival in adults was greater during mild than cold winters, and close to zero during all winters that were colder than average. Recruitment was higher in warm than in cold summers. Growth was more rapid in warm than in cold spring-summer periods. In warm years growth rates were higher than in more southern locations, and values for maximum size and life span were relatively high.