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黒潮域におけるマクロプランクトンの微細分布と群集構造について
https://fra.repo.nii.ac.jp/records/2005359
https://fra.repo.nii.ac.jp/records/20053593c68ed7f-2426-4318-b527-1c85b11bb125
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||||||
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| 公開日 | 2024-05-22 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | 黒潮域におけるマクロプランクトンの微細分布と群集構造について | |||||||||||||||||
| 言語 | ja | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | Characteristics of Macroplankton Community in the Kuroshio Area, South of Shionomisaki, March 1967 | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | jpn | |||||||||||||||||
| 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 |
木立, 孝
× 木立, 孝× 山本, 公夫
× 伊東, 宏
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||
| 内容記述 | 1. Samplings with a larva-net at serial stations were made along the longitudinal line stretched southwardly from Cape Shionomisaki March 3 and 4, 1967. The leg was about 20 nautical miles long and 28 sampling stations occupied such a short distance. This paper deals with distribution of macroplankton in the Kuroshio area on the basis of these samples. 2. On the basis of surface water temperature and current, the surveyed area is divided into four subareas, namely, "coastal", "northern rim of the current maximum zone" (Cyclonic shear zone), "current maximum zone", and "southern rim of the current maximum zone" (Anticyclonic shear zone, covering the warm core) subareas. The first mentioned one, coastal, does not mean "coastal water region" as usually defined oceanographically, but a tentative division for convenience sake. 3. Total number of macroplankton population is consistent in the first three subareas (mean 28,400 individuals per haul), but declined to half in the lastmentioned subarea where biomass is also minimum among four subareas. 4. The percentages of animal group by station are obtained. The result indicates that Copepoda occupies 34-73% and Appendicularia 8-35% or both taxa together occupy 74-88% of the total macroplankton population. This tendency is persistent even at stations where populations are far smaller than others. There is a trend that when more individuals of Salpida occur, the number of Copepoda are collected is less. 5. The types of distribution by animal taxa are classified into eight as Follows Type A: Distribution centers in the coastal subarea and never occurs beyond the current maximum zone (Cirripedia and Cladocera). Type A': Most abundant in the coastal subarea and tends to decrease towards offshore (Copepoda). Type A": Uniformly distributed from the coastal to the current maximum zone subareas, but abruptly declines beyond that (Appendicularia). Type B: Distribution centers in the current maximum zone but decrease towards both sides (Pyrosomata, Doliolida, Salpida, Mollusca, Chaetognatha and Polychaeta). Type B': Most abundant in the current maximum zone but has another peak in the coastal subarea (Euphausiacea). Type B": Most abundant in the current maximum zone but has another peak in the warm core (Ostracoda). Type C: Very few in the subareas from coastal to the current maximum zone, but abundant in the warm core area (Stomatopoda, Mysidacea and Ctenophora). Type D: Occurring through all four subareas with some fluctuation by subarea (Brachyura, Macrura, Amphipoda and Coelenterata). 6. Important macroplankton species can be classified on the basis of the above-classification. Results are indicated as follows: Type A: Copepoda 1 species; Type A': Copepoda 2 genera and 3 species; Type A": Copepoda 1 species; Type B: Salpida 1 species, Copepoda 1 genus and 10 species, and Chaetognatha 7 species; Type B': Salpida 1 species and Copepoda 3 genera and 2 species; Type B": Copepoda 2 species; Type C: Pteropoda 1 species and Copepoda 4 species; Type D: Decapoda 1 genus, 2 larval stages, Copepoda 3 genera and 8 species, and Chaetognatha 6 species. 7. A correlation matrix was prepared for the populations of 45 important species. The results of analysis indicate that only Sta. 1 belongs to coastal zone apart from all other stations occupied and that the Kuroshio area could be divisible into two areas having different distribution patterns of macroplankton animals. 8. An observation on distributional patterns of Copepoda was made by grouping them into neritic, intermediate and Kuroshio species. In the coastal subarea, neritic and intermediate species are dominant but a great variability exists in respect to proportions of both species groups among stations. In the northern rim subarea, three groups share populations rather equally. But, in the current maximum zone and southern rim subareas, Kuroshio species are always most abundant. The peaks of both Kuroshio and intermediate species groups exist within the current maximum zone subarea and distribution patterns of both groups are very similar to each other except for a single station. In contrast to a meager occurrence of the coastal species beyond the current maximum zone of the Kuroshio, the Kuroshio species still exist in the coastal subarea unlike coastal species decreasing in the current maximum zone. 9. Some observations were made on distribution of macroplankton and its relationship with those of fish larvae, such as sardine, anchovy, round herring, Pacific saury, mackerel, jack mackerel, Macrorhamphosus, Myctophidae, Leptocephalus and common squid. The relationships between occurrence of fish such as anchovy, Pacific saury and Myctophidae and total macroplankton as well as Copepoda were observed. Results indicate that correlation between anchovy and macroplankton or Copepoda is positive, while between Myctophidae and these two is negative. No correlation exists between Pacific saury and either total plankton or Copepoda. These differences are argued from viewpoint of their distributions and reproductive strategy. 10. Macroplankton animals are classified into herbivors, omnivors and carnivors. Carnivorous macroplankton is most abundant in the current maximum zone subarea. The rate of their occurrence against fish larvae is the highest at the southern rim subarea covering warm core and the lowest in the current maximum zone. | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||
| 内容記述 | 1).1967年3月3日~4日,潮岬正南海域で沿岸域から黒湖外側域にかけて稚魚ネットによる横断採集が行われた。本報はそれらによるマクロプランクトンの分布について報告したものである。2),調査海城は表面水温,表層流から沿岸城(沿岸水域そのものを意味しない),黒潮内側録辺域,最強流域,流軸沖合域(最高水温域を含む)の4水系に区分された。3).クロプランクトン総個体数は沿岸域から黒潮最強流域までははぼ一定の水準(28,400個体/haul)であったが,それより最高水温域にかけての海域は1/2以下に減少し,最高水温域は個体数,湿重量とも最低の現存最であった。4).動物群別の出現比率を地点別にみるとカイアシ類が34~73%,尾虫類が8~35%を示し,両者で全体の74~88%を占めた。マクロプラソクトンの個体数が著しく減少した地点でもその比率はあまり変らなかったが,サルパ類の多く出現した地点でカイアシ類比率の低くなる傾向が認められた。5).動物群の出現顔向から,その分布を下記の8つに類型した。A型:沿岸域に分布の中心があり,最強流域より沖合には分布しない …… 蔓脚類幼生,枝角類. A'型:沿岸域に最も多いが沖合にゆくに従い漸減する …… カイアシ類 A"型:沿岸域から黒潮強流域まではほ浮同じ水準で分布し,それより沖合は急減する。 …… 尾虫類。B型:黒潮の最強流域中心に最も多く分布するが,それをはさむ沿岸城や沖合域で減少する …… ヒカリポヤ類,ウミタル類,サル類,軟体類,ヤムシ類,多毛類。B'型:黒潮の最強流域付近に最も多く分布するが,沿岸域にも小ビークを認める …… オキアミ類。B"型:黒潮の最強流域中心に最も多く分布するが,最高水温域にも小ピークを認める …… 介形類。C型:沿岸域から最強流城にかけて殆ど出現せず、最高水温域に分布の中心がある …… ロ脚類幼生,アミ類,櫛水母類.D型:地点問の変動はあるが各水系に平均的に出現する …… 短尾類幼生,長尾類,端脚類,水母類。6).動物群で行ったと同様の類型に従い各主要種についても下記のように類型した。A型:カイアシ類1種,A'型:カイアシ類3種,2属,A"型:カイアッ類1種,B型:サルパ類1種,カイアシ類10種,1属,ヤムシ類7種,B'型:サルパ類1種,カイブシ類2種,3属,B"型:カイアシ類2種,C型:翼足類1種,カイアシ類4種,D型:十脚類1属,2幼生期,カイアシ類8種,3属,ヤムシ類6種。7).それら各種の出現傾向の類似性を知るために主要45種の出現個体数から各地点間の相関を求め,相関マトリックスを作成し,群分析を行った結果,大きくは最沿岸城の1地点とその他の海域に分けることができ,更に黒潮流域中にも出現傾向の異なる2海城を示した。8).カイアシ類を沿岸性,中間性,黒潮性に分け出現傾向の検討を行った。沿岸城では沿岸,中間性種が多いが,その地点問の出現傾向は異なり,物理環境の変化の激しい内側縁辺域では3群がほぼ等数出現し,黒潮最強流域を含めそれより沖合は黒潮性種が常に多く、黒潮,中間性種とも最強流域にビークを形成し,その出現煩向も1地点を除き類似した。沿岸性種が最強流域沖合で分布が極めて少ないのに対し,黒潮性種の沿岸域での出現は沿岸性種の黒潮流轴沖合程には頭著な低下を示さなかった。9).マイワシ,カタクチイワシ,ウルメイワシ,マサパ、マアジ,サンマ,サギフエ,ハダカイワシ類,レブトセファルス,スルメイカの各仔稚魚の出現傾向とクロプランクトンのそれとの検討を行った。それらのうち全地点に出現したカタクチイワシ仔稚魚,サンマ仔稚魚,ハダカイワシ類の出現と全マクロブランクトン,カイアシ類の関係をみた。カタクチイワシ仔稚魚は両者と正相関,ハダカイワシ類は負相関,サンマは全く相関が認められなかった。これらの原因について産卵生態,分布生態などから考察した。10).マクァプランクトンを植食·雑食と動物食に分けて,出現傾向をみると黒潮最強流域に動物食マクロブランクトンが最も多く、それと仔稚魚の比では最高水湿域が最も高く,最強流域で最も低いことが認められた. | |||||||||||||||||
| 言語 | ja | |||||||||||||||||
| 書誌情報 |
ja : 東海区水産研究所研究報告 en : Bulletin of Tokai Regional Fisheries Research Laboratory 巻 112, p. 27-48, ページ数 22, 発行日 1983-12 |
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| 出版者 | 東海区水産研究所 | |||||||||||||||||
| 言語 | ja | |||||||||||||||||
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| 出版者 | Tokai Regional Fisheries Research Laboratory | |||||||||||||||||
| 言語 | en | |||||||||||||||||
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| 収録物識別子タイプ | PISSN | |||||||||||||||||
| 収録物識別子 | 0040-8859 | |||||||||||||||||
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| 収録物識別子タイプ | NCID | |||||||||||||||||
| 収録物識別子 | AN00156834 | |||||||||||||||||
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| 識別子タイプ | Local | |||||||||||||||||
| 関連識別子 | tokai_k_112_27 | |||||||||||||||||
| 関連サイト | ||||||||||||||||||
| 識別子タイプ | URI | |||||||||||||||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010291729 | |||||||||||||||||
| 言語 | ja | |||||||||||||||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||||||||||||||
