期刊文献

Vertical distributions of large ontogenetically migrating copepods in the Oyashio region during their growing season 收藏

在亲潮区大ontogenetically迁移桡足类在生长季节垂直分布

原文求助发布源

作者

Atsushi Tsuda [1] Hiroaki Saito [2] Hiromi Kasai [3]

作者单位

1. Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan 2. Tohoku National Fisheries Research Institute, Fisheries Research Agency, Shiogama, Miyagi, 985-0001, Japan 3. Hokkaido National Fisheries Research Institute, Fisheries Research Agency, Kushiro, Hokkaido, 085-0802, Japan

关键词

Neocalanus copepod ;Vertical distribution ;Oyashio ;Habitat segregation ;Seasonal change

关键词译文

Neocalanus桡足类，垂直分布;亲潮;栖息地隔离;季节变化

页码

123-132

DOI

10.1007/s10872-013-0214-4

来源信息

Journal of Oceanography ISSN：0916-8370, 2014年, 70卷, 2期, 123-132页

摘要

Neocalanus flemingeri, Neocalanus plumchrus, Neocalanus cristatus and Eucalanus bungii are large and dominant mesozooplankton occurring throughout the subarctic Pacific. They are an important trophic link and transporter of organic matter to the mesopelagic zone. Vertical distributions of these copepods were investigated from March to October 2000 in the Oyashio region of the western subarctic Pacific. Neocalanus plumchrus and N. flemingeri were distributed in the surface layer (0–50 m) and N. cristatus and E. bungii in the subsurface layer (50–100 m). However, when examined in detail, clear seasonal and vertical differences were observed. Neocalanus plumchrus was concentrated in the top 20 m from late April to the end of July, and N. flemingeri showed a little deeper distribution from May to July. Neocalanus cristatus showed a deeper distribution than that of grazing individuals of E. bungii from April to early July, but grazing individuals of E. bungii (C3–C6) showed a deeper distribution than that of N. cristatus from the end of July to October. Early copepodites of E. bungii were distributed much shallower than late copepodite stages and overlapped with copepodites of N. plumchrus and N. flemingeri. These results suggest that the four species of large copepods have established habitat segregation by season, vertical distribution and food resource partitioning in the Oyashio region as well as other regions of the North Pacific.

摘要译文

Neocalanus flemingeri，Neocalanus plumchrus，Neocalanus伯劳和Eucalanus天牛在整个北极地区出现的大而占主导地位的浮游动物。他们是有机物的中层区的重要营养链路和转运。这些桡足类垂直分布从3月在西太平洋亚北极的亲潮区域的调查，以2000年10月。 Neocalanus plumchrus和N.flemingeri分布在表面层（0-50米）和N. cristatus的和E天牛在地下层（50-100米）。但是，当详细研究，观察到明显的季节性和垂直差异。 Neocalanus plumchrus集中在排名前20米四月下旬至7月底，和N.flemingeri显示，从五月稍微深入分布到七月。 Neocalanus伯劳表现出更深的分配比，从4月放牧E.天牛个人至7月上旬，但放牧E.天牛的个人（C3-C6）表现出更深的分布比从7月底到10 N.伯劳的。 E.早期copepodites天牛分布较浅比晚copepodite阶段重叠N. plumchrus和N. flemingeri的copepodites。这些结果表明，四个品种的大型桡足类已建立的栖息地隔离季节，垂直分布和食物资源分割的亲潮地区以及北太平洋的其他地区。

Atsushi Tsuda [1] Hiroaki Saito [2] Hiromi Kasai [3]. Vertical distributions of large ontogenetically migrating copepods in the Oyashio region during their growing season[J]. Journal of Oceanography, 2014,70(2): 123-132