Zooplankton Investigations in Hiuchi-nada in the Setonaikai (Inland Sea of Japan):I. The Seasonal Occurrence of Copepods at the three Stations in Hiuchi-nada
Zooplankton Investigations in Hiuchi-nada in the Setonaikai (Inland Sea of Japan):I. The Seasonal Occurrence of Copepods at the three Stations in Hiuchi-nada
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濑户内海（日本内海）樋内滩的浮游动物调查：I．
DOI：
10.5928/kaiyou1942.20.24
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发表时间：
1964
期刊：
影响因子：
--
通讯作者：
R. Hirota
中科院分区：
文献类型：
--
作者：
R. Hirota
在广岛三个站点的调查中，共鉴定出桡足类动物21种。每个物种的发生时间基本上与我之前在Hiuchinada北部外的Bingo-nada所记录的时间相似。其中，细小副喙虫、相似喙虫、小喙虫、亲和喙虫、安德鲁喙虫和褐微喙虫居优或次优。根据目前的调查结果和我以前在Bingo-nada的工作，从南到北横跨Setonaikai中部的海域的生物特征被认为如下。在Bingo-nada地区北部，水团与工厂和城市污水造成的污水混合剧烈，因此Acartia clausi和Oithona nana占主导地位。与此相反，在以俄亥俄州相似病为主的冀中地区中部，受污染的水的影响似乎最弱。
In the investigations at the three stations in Hiuchi-nada, twenty-one species of copepods were identified. The period of occurrence of every species was, in the main, similar to that recorded in my previous work in Bingo-nada situated in the northern outside of Hiuchinada. Among them, Paracalanus parvus, Oithona similis, Oithona nana, Corycaeus affinis, Corycaeus andrewsi and Microsetella norvegica occurred dominantly or subdominantly. From the results of the present survey and my previous work in Bingo-nada, the biological characteristic of the sea area extending across the central part of the Setonaikai from south to north is considered as follows. In the northern part of Bingo-nada area, the water mass is mingled violently with the polluted water caused by the sewage of factories and cities, and so Acartia clausi and Oithona nana are dominant. On the contrary, in the central part of Hiuchi-nada area where Oithona similis occurred dominantly, such effect of the polluted water seems to be the weakest.