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Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.35 [2006] >
IJMS Vol.35(3) [September 2006] >
| Title: | Size variations of planktonic foraminiferal population in the Indian Ocean sector of Southern Ocean |
| Authors: | Khare, N.
Chaturvedi, S.K. |
| Keywords: | Size variation
Planktonic foraminifera
Nutrient
Southern Ocean
Antarctic Circumpolar Current
Fronts |
| Issue Date: | Sep-2006 |
| Publisher: | CSIR |
| Abstract: | Twenty five surface sediment samples (comprising Peterson Grab, Piston, Gravity and Spade core top samples) were collected along a north-south transect (between 9.69º N and 55.01º S latitude and 80º E and 40º E longitude). On the basis of overall size, the total planktonic population has been divided into two groups (> 120 μm sized population and <120 μm sized population). The results show an apparent interrelationship between shell size and variations in hydrographic conditions such as food availability/nutrition (phosphate) of ambient water masses. It is apparent that nutrients play a significant role in determining the size of the foraminiferal population and an increase in the nutrient supply is conducive for the growth of the planktonic population. |
| Page(s): | 221-226 |
| ISSN: | 0379-5136 |
| Source: | IJMS Vol.35(3) [September 2006]
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