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- Title
Abundance and coiling direction in planktic species Neogloboquadrina pachyderma (Ehrenberg) as indicators of hydrological conditions: evidence from N--S transect of Indian Ocean.
- Authors
Khare, N.; Mazumder, A.; Govil, P.
- Abstract
A total of 25 surface sediment samples collected along a North-South transect (from 9.69°N to 80°E and 55.01°S to 40°E) in south western Indian Ocean have been used to study recent planktic foraminifera revealing the ecological preferences of the planktic foraminifer species in the area, particularly the coiling direction patterns in the planktic species Neogloboquadrina pachyderma (Ehrenberg). The coiling direction and their absolute abundance can be shown to be related to ambient temperature and salinity values. Dextrally coiled forms decrease towards higher latitude, while sinistrally coiled forms increase. Similar studies should be undertaken along various transects to further establish the extent of environmental control on coiling direction in planktic foraminifera.
- Subjects
INDIAN Ocean; HYDROLOGIC cycle; GEOGRAPHICAL distribution of foraminifera; OCEAN temperature; NEOGLOBOQUADRINA pachyderma; SALINITY
- Publication
Current Science (00113891), 2010, Vol 98, Issue 8, p1108
- ISSN
0011-3891
- Publication type
Article