Studies on the Effect on Marine Organisms of the Warm Water Effluent from a Nuclear Power Plant
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- YASUDA Tôru
- <I>Fukui Prefectural Fisheries Experimental Station</I>
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- IZUMI Seiichiro
- <I>Fukui Prefectural Fisheries Experimental Station</I>
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- KOMATSU Hisao
- <I>Fukui Prefectural Fisheries Experimental Station</I>
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- KURIKOMA Harumasa
- <I>Fukui Prefectural Fisheries Experimental Station</I>
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- HIBINO Kenji
- <I>Fukui Prefectural Fisheries Experimental Station</I>
Bibliographic Information
- Other Title
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- 原子力発電所の温排水が生物に与える影響 温排水が内浦湾のプランクトンの昼夜移動に及ぼす影響
- チュウオウ ユーラシア ケンキュウ ノ シン チヘイ : イスラーム チイキ ケンキュウ ブモン ノ カツドウ ニ ヨセテ
- ―温排水が内浦湾のプランクトンの昼夜移動に及ぼす影響<SUP>*</SUP>―
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Abstract
Succeeding to the previous report, the diel vertical migration of main plankters was studied at the two fixed stations respectively 500 and 3, 500 meters apart from the outlet of warm water effluent in Uchiura Bay for a period of 24 hours from 12: 00, October 11, 1979 to the following day. Seven times sampling were carried out by vertical haul with a plankton-net (30 cm in diameter, 0.09 mm in mesh size and set with a filtration-meter) at the two fixed stations at every three meters from the surface to 15 meters depth. Simultaneously hydrographic observations were also made. The results obtained are summarized as follows:<BR>1) Main zooplankters collected at the two stations were Paracalanus parvus, Euterpina actifrons, Oncaea venusta and nauplii of Balanidae. No definite difference in the diel migration of the former three species were observed between the natural condition and the area affected by the warm water effluent, while the other dominant planktonic animals as nauplii of Balanus sp. showed the utterly different diet migration between the two stations. Most of the nauplii population under the natural condition nearl the mouth of the bay showed “so-called” the typical twilight migration.<BR>On the contrary, a larger part of the nauplii collected at 500 meters apart from the outlet did not show the typical migration, mainly suspending in the layer above 3 meters depth, probably more than approximately 25°C.<BR>2) These phenomena mentioned above may indicate that the warm water effluent seems to restrict the sinking activity of certain planktonic animals toward the middle or bottom layers and to affect their early growth, development and metamorphosis.
Journal
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- Aquaculture Science
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Aquaculture Science 30 (1), 1-9, 1982
Japanese Society for Aquaculture Science
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Details 詳細情報について
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- CRID
- 1390282679694908416
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- NII Article ID
- 130003714382
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- NII Book ID
- AA12158121
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- ISSN
- 21850194
- 03714217
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- NDL BIB ID
- 023840927
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed