期刊文献

The seasonal occurrence of Neocalanus cristatus, Neocalanus plumchrus, and Eucalanus bungii over the shelf of the northern Gulf of Alaska 收藏

在阿拉斯加湾北部的架子上季节性出现的Neocalanus cristatus，Neocalanus plumchrus和Eucalanus bungii

原文求助发布源

作者

R.T. Cooney

作者单位

[1]Institute of Marine Science, University of Alaska, Fairbanks, AK 99701, U.S.A

发布日期

1 January 1986

页码

541-553

DOI

10.1016/0278-4343(86)90075-0

来源信息

Continental Shelf Research ISSN：0278-4343, 1986年, 5卷, 5期, 541-553页

摘要

Field collections of zooplankton from the northern Gulf of Alaska demonstrate that the large oceanic copepods Neocalanus cristatus, N. plumchrus, and Eucalanus bungii are seasonal members of shelf and coastal zooplankton communities. They account for more than 25% of the net zooplankton biomass (0.333 mm) during the spring and summer months. The presence, absence, and subsequent reappearance of these copepods over the shelf is apparently related to their seasonal shifts in vertical distributions and to a persistent pattern of onshore Ekman transport. During periods when these copepods occur in the surface water of the bordering deep ocean (late autumn to summer) they are swept shoreward over the shelf. During times when they occur below the Ekman layer, they are generally absent from the shelf. The ecological significance of this seasonally introduced biomass is discussed in terms of what is understood about these species from studies elsewhere in the North Pacific Ocean.

摘要译文

来自阿拉斯加湾北部浮游动物的田间收集表明，大型海洋桡足类Neocalanus cristatus，N。plumchrus和Eucalanus bungii是陆架和沿海浮游动物群落的季节性成员。在春季和夏季，它们占浮游动物净生物量（0.333毫米）的25％以上。这些桡足类在架子上的存在，缺失和随后的再现显然与它们在垂直分布上的季节性变化和陆上埃克曼运输的持续模式有关。在这些桡足类出现在接壤深海（深秋至夏季）的地表水中期间，它们在陆架上向上掠过。在它们发生在Ekman层下方的时间期间，它们通常不存在于架子上。根据从北太平洋其他地方的研究中对这些物种的了解，讨论了这种季节性引入的生物量的生态意义。

R.T. Cooney. The seasonal occurrence of Neocalanus cristatus, Neocalanus plumchrus, and Eucalanus bungii over the shelf of the northern Gulf of Alaska[J]. Continental Shelf Research, 1986,5(5): 541-553