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Title: Comparison between phytoplankton bio-diversity and various indices for winter monsoon and inter monsoon periods in north-eastern Arabian Sea
Authors: Motwani, Gunjan
Raman, Mini
Matondkar, Prabhu
Parab, Sushma
Pednekar, Suraksha
Solanki, Hitesh
Keywords: Phytoplankton diversity;Diversity indices
Issue Date: Aug-2014
Publisher: NISCAIR-CSIR, India
Abstract: Phytoplankton samples of north-eastern Arabian Sea were collected during ocean colour satellite validation cruises from 2003-2007. Phytoplankton community organization and distribution was analyzed using various diversity indices like Shannon Diversity Index, Simpson Diversity Index, Margalef Diversity Index, McIntosh Diversity Index, Pielou Evenness Index and dominance index. Results showed that Navicula, Thalasiothrix and Rhizosolenia were most abundant among the diatoms. Trichodesmium, a cyanobacteria, dominated the shallow coastal waters. Resultant indices were correlated with phytoplankton cell counts and it was found that Shannons index better represents the diversity than other indices. Cell counts were also correlated with in situ chlorophyll-a values, which showed that this correlation does not stand good for the bloom conditions.
Page(s): 1513-1518
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.43(08) [August 2014]

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