Salps of the Southern Ocean (Australian Sector) during the 1983-84 summer, with special reference to the species Salpa thompsoni, FOXTON 1961
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概要
- 論文の詳細を見る
Studies on salps were carried out on the plankton samples collected by R. V. HAKUHO MARU during the KH-83-4 cruise in the Southern Ocean (Australian Sector) as part of the BIOMASS SIBEX I programme. The geographical distribution of salps showed that widely distributed cosmopolitan species such as Salpa fusiformis, Salpa aspera, Thalia democratica and Pegea confoederata reached their southern limit at the Subtropical Convergence. This boundary represents the northern limit for Salpa thompsoni, the most abundant salp of the Southern Ocean. Ihlea racovitzai was limited to the high latitude Antarctic water. Analysis of stratified samplings performed day and night revealed a pattern of diel vertical migration for Salpa thompsoni, Salpa fusiformis and Ihlea magalhanica. Ihlea racovitzai did not show a clear vertical movement between the day time and the night time. The vertical distribution of Ihlea magalhanica and Ihlea racovitzai appeared to extend deeper than the range determined previously. A pattern of vertical stratification in the size composition and stages of maturity for both aggregate and solitary forms of Salpa thompsoni was observed. Moreover, a comparison of the population at different latitudes revealed different compositions.
- 国立極地研究所の論文
著者
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Nemoto Takahisa
Ocean Research Institute University Of Tokyo
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Casareto Beatriz
Ocean Research Institute University Of Tokyo
関連論文
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- Feeding habits of mesopelagic shrimps collected off Oregon (The Biology of the Subarctic Pacific - Proceedings of the Japan-United States of America Seminar on the Biology of Micronekton of the Subarctic Pacific Part I)
- Foreword (The Biology of the Subarctic Pacific - Proceedings of the Japan-United States of America Seminar on the Biology of Micronekton of the Subarctic Pacific Part I)
- Aspects of the roles of squid in food chains of the Antarctic marine ecosystems (extended abstract)
- Foreword
- Characteristics of organic particles collected by sediment trap in the Antarctic Ocean(abstract)
- Midwater fishes of the Southern Ocean south of Australia (extended abstract)
- Salps of the Southern Ocean (Australian Sector) during the 1983-84 summer, with special reference to the species Salpa thompsoni, FOXTON 1961
- Phytoplankton community in the Subtropical Convergence at 150゜E during the austral summer of 1983-84 (extended abstract)
- Distribution of pelagic shrimps in the Australian Southern Ocean (abstract)
- LATITUDINAL VARIATION OF THE NUMBER OF MUSCLE FIBRES IN SALPA THOMPSONI (TUNICATA, THALIACEA) IN THE SOUTHERN OCEAN : IMPLICATIONS FOR THE VALIDITY OF THE SPECIES SALPA GERLACHEI (Ninth Symposium on Polar Biology)
- Oceanographic conditions of the Australasian sector of the Southern Ocean in the summer of 1983-84
- Size structure of phytoplankton carbon and primary production in the Southern Ocean south of Australia during the summer of 1983-84
- 15N and 13C abundances in the Antarctic Ocean with emphasis on biogeochemical structure of food web (extended abstract)
- Pelagic Shrimps (Crustacea: Decapoda) from the Southern Ocean between 150°E and 115°E