2.7
Seasonal Variation of Phytoplankton Pigments and Some
of the Associated Oceanographic Parameters
in the Laccadive Sea off Cochin
N.M. SHAH
I. Material and Methods
Collections were made on board of the R V "Conch" from stations located approximately 7 to 15 km off Cochin (Fig. 1). Most of the monthly collections were made from
stations located in area 2, profile studies were made from areas 1, 2 and 3, and one grid
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Fig. 1. Map showing collection areas in the sea off Cochin
study from areas 1,2,4,5 and 6. At stations in the depth range 18 to 20 m samples were
collected from 0, 5, 10 and 15 m, and at 25 to 26 m deep stations from 0, 10 and 20 m.
Collections were generally made between 1000 and 1300 local time. All samples were collected with Nansen reversing water bottles; the usual practice was to operate a single bottle