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大阪湾の底質環境とメイオベントスの分布
https://fra.repo.nii.ac.jp/records/2003200
https://fra.repo.nii.ac.jp/records/200320009c6b5d9-fb43-422e-b683-022c9e844efa
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-04-25 | |||||
| タイトル | ||||||
| タイトル | 大阪湾の底質環境とメイオベントスの分布 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | Sediment Conditions and Meiobenthic Community in Osaka Bay, Japan | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Meiobenthos; Sediment conditions; Dissolved oxygen; Nematode/Copepod ratio; Osaka Bay | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
辻野, 睦
× 辻野, 睦× 玉井, 恭一 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The relationship between the meiobenthic community structure and eutrophication of the bottom sediment was investigated at 18 stations in Osaka Bay in April and September 1994. As a common feature in April and September, the ignition loss and total organic carbon and total sulphide contents of bottom sediments increased towards the coast. The total nitrogen contents of bottom sediments was high in the center of the Bay. However the dissolved oxygen of the bottom water was depleted at the near-shore stations only in September. The average numerical abundance of meiobenthos was 639 individuals/10cm2 in April and 445 individuals/10cm2 in September. As meiobenthic components, nematodes were the most abundant and occupied 79.3 and 86.1% of the total meiobenthos in April and September, respectively; followed by harpacticoid copepods (6.9 and 2.2%) and polychaetes (0.8 and 3.6%). These three animal groups were found to be concentrated in the top 2cm of the bottom sediments at all stations. The abundance of nematodes did not differ significantly between April and September. Harpacticoids were more numerous in April than in September. As a horizontal pattern, harpacticoids were more abundant along the coast than in the center of the Bay in April, but the reverse was the case in September. The differences in horizontal distribution patterns seen in the three animal groups are considered to reflect the group-specific tolerance against decreases of dissolved oxygen levels. The nematode/copepod ratios tended to increase with decreasing dissolved oxygen down to 2ppm. It is suggested that a high nematode/copepod ratio is associated with low dissolved oxygen and the deterioration of sediment conditions. | |||||
| bibliographic_information |
ja : 南西海区水産研究所研究報告 en : Bulletin of Nansei National Fisheries Research Instituite 巻 29, p. 87-100, ページ数 14, 発行日 1996-03 |
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| 出版者 | ||||||
| 出版者 | 南西海区水産研究所 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | Nansei National Fisheries Research Instituite | |||||
| 言語 | en | |||||
| item_10002_source_id_9 | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0388-841X | |||||
| item_10002_source_id_11 | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00181988 | |||||
| 情報源 | ||||||
| 識別子タイプ | Local | |||||
| 関連識別子 | nnf_k_29_87 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010541835 | |||||
| 言語 | ja | |||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||
