THE DISTRIBUTION AND REPRODUCTION OF SAGITTA ELEGANS ON GEORGES BANK IN RELATION TO THE HYDROGRAPHICAL CONDITIONS
THE DISTRIBUTION AND REPRODUCTION OF SAGITTA ELEGANS ON GEORGES BANK IN RELATION TO THE HYDROGRAPHICAL CONDITIONS
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秀丽隐杆线虫在乔治滩的分布和繁殖与水文条件的关系
DOI：
10.2307/1538223
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发表时间：
1943
期刊：
影响因子：
--
通讯作者：
D. Bumpus
中科院分区：
文献类型：
--
作者：
G. L. Clarke;E. L. Pierce;D. Bumpus
1. 从1939年9月至1941年6月的11次巡航中，通过站网捕获的浮游生物，确定了Georges Bank水域中线虫的数量分布、大小和成熟阶段。研究发现，覆盖在乔治河岸中心部分的相对均匀的水域，在不同的邮轮上，其范围发生了变化，但与周围分层的水体有明显的区别，并被指定为“混合区”。线虫的丰度从每立方米最多165个标本到零不等，但平均每立方米超过10个标本。3个在混合区内的车站。在一半以上的站点中，深层数据比浅层数据更丰富。在某些情况下显示出日垂直迁移的存在，但在不同的巡航中差异很大。在水平分布上，秀丽隐杆线虫的最高浓度出现在中心均匀水体中。
1. The quantitative distribution, size, and stages of maturity of Sagitta elegans in the waters of Georges Bank have been determined from plankton hauls made on a network of stations occupied during 11 cruises from September 1939, to June 1941.2. The area of relatively homogeneous water overlying the central portion of Georges Bank was found to change in extent from cruise to cruise, but to be sharply delineated from the surrounding stratified water masses, and has been designated as the "Mixed Area."3. The abundance of S. elegans varied in individual hauls from a maximum of 165 specimens per cubic meter to zero, but averaged more than 10/m.3 at stations within the Mixed Area. The deeper hauls were numerically richer than the shallow hauls at more than half the stations. The existence of a diurnal vertical migration was revealed in certain cases, but varied greatly from cruise to cruise.4. In horizontal distribution the greatest concentrations of S. elegans were found within the central homogeneous water ...