Phytoplankton species composition, abundance and distribution in Fishing area 58 of Indian Ocean sector of Southern Ocean
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Creator |
Rathod, Vijayakumar
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| Date |
2011-11-18T04:28:47Z
2011-11-18T04:28:47Z 2011-10 |
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| Identifier |
0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/13079 |
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| Description |
671-679
Phytoplankton species composition, abundance and standing stocks investigations were carried out during the First Indian Antarctic Krill Expedition (FIKEX). Nitrate, phosphate and silicate were available in sufficiently higher concentrations at Polar Front zone. Nitrate and silicate, exhibited a marked boundaries between high values in the Sub Antarctic region. Diatom dominated the phytoplankton in the study region and their numbers generally increases southward with peaks of abundance in Sub Antarctic waters. Dinoflagellates, flagellates and “monads” occur in highest concentration north of the Polar Front zone. Various diatom assemblages are characteristics of different latitudinal zones. Vicinity of the Polar Front was found to be rich in <i style="">Nitzschia, Pseudonitzschia</i> group of species. South of Polar Front <i>Nitzschia </i>“nana” (Cells of both<i> N. cylindrus </i>and <i>N.</i> <i>pseudonana)</i> and <i style="">Dactyliosolen tenuijunctus</i><b style=""> </b>dominate.<b style=""> </b>Diatoms viz. <i style="">Fragilariopsis kerguelensis</i> and <i>Thalassionema nitzschioides</i> ; were reported earlier and present studies. Present study laso reveals that the diatom <i style="">Pseudonitzschia spp</i>. were numerous in numbers. |
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| Language |
en_US
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| Publisher |
NISCAIR-CSIR, India
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Source |
IJMS Vol.40(5) [October 2011]
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| Subject |
Phytoplankton
Southern Ocean Polar Front Sub Antarctic |
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| Title |
Phytoplankton species composition, abundance and distribution in Fishing area 58 of Indian Ocean sector of Southern Ocean
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| Type |
Article
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