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Is there impact of climate change on biological productivity in the Indian Ocean

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Title Is there impact of climate change on biological productivity in the Indian Ocean
 
Creator Chaturvedi, Neera
Shah, Meghal
Jasrai, Ajai & Y
 
Subject Chlorophyll
Phytoplankton
Ocean productivity
Oligotrophic
Eutrophic
 
Description 50-57
SeaWiFS derived eight days average,
chlorophyll images for 10 years from 1997 onward have been analysed,
representing the present situation. Few representative locations in the Arabian
Sea and Bay of Bengal were studied to understand the chlorophyll variability. Chlorophyll
values are generally higher during 2000’s as compared to that of during the
1980’s. In order to study the expansion or contraction of area under low or
high chlorophyll region, the image was classified into three zones viz.
oligotrophic, mesotrophic and eutrophic waters based on chlorophyll range. A
comparison is made of average values from October to April in CZCS derived
(1980’s) and SeaWiFS derived (2000’s) chlorophyll images. Chlorophyll
concentration in the northwest Arabian Sea has increased significantly during
the 2000’s as compared to that of 1980’s and the area under eutrophic zone i.e.
chlorophyll rich waters has increased in spatial extent. An increase in
chlorophyll concentration in this decade, as compared to two decades back,
indicates a positive sign, against the reported global warming.
 
Date 2013-02-19T12:58:27Z
2013-02-19T12:58:27Z
2013-02
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/15985
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.42(1) [February 2013]