Role of a Unionid Clam Population in the Calcium Budget of a Small Arctic Lake
Role of a Unionid Clam Population in the Calcium Budget of a Small Arctic Lake
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Unionid 蛤种群在北极小湖钙预算中的作用
DOI：
10.1139/f80-028
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
R. Green
中科院分区：
文献类型：
--
作者：
R. Green
根据1972年夏季采样资料，对西北68°N的贝壳湖大无齿鳗种群的生长速度和形态计量学参数进行了估算。1973年夏季，Scuba估计了湖中无齿动物的密度和大小随水深和底部坡度的变化。根据这些数据建立的预测模型估计，无齿蚌贝壳中的总钙为10.1 mg，约为壳牌湖水中钙溶出量的一半。估计的年龄分布中没有最年轻的四五岁儿童，最近的污染可能是一个因素。独立估计用于贝壳生长的钙，以及由个体死亡和随后的贝壳溶解所释放的钙，每年约占(无齿目动物种群钙的)50%。这意味着无齿蚌种群的平均停留时间约为2 年。关键词：钙、文蛤、浮游生物、湖泊、北极
Growth rate and morphometric parameters were estimated for the Anodonta grandis (Pelecypoda, Unionidae) population in Shell Lake, N.W.T. (68°N), based on sampling during the summer of 1972. Variation in density and size of Anodonta within the lake as a function of varying depth and slope of bottom was estimated by SCUBA during the summer of 1973. Predictive models based on these data estimate total calcium in shells of the Anodonta population to be 10.1 Mg, which is approximately half the amount of calcium dissolved in Shell Lake water. The youngest four or five year-classes are missing from the estimated age distribution, and recent pollution may be a factor. Independent estimates of calcium used for shell growth, and of calcium released by death of individuals and subsequent shell dissolution, approximate 50% (of the calcium in the Anodonta population) per year. This implies a mean residence time in the Anodonta population of approximately 2 yr.Key words: calcium, clam, unionid, lake, arctic