Fig. 1 Map showing location of Sagar and Jambu islands in the western Sunderban and Thakuran island in central Sunderban. Sampling locations marked in red flag shows the stations selected in both the sectors for diversity and biomass estimation

JAMBU Island

THAKURAN Island

Fig. 2a Shoreline changes in Sagar Island during 1924-2008

1999

197519551924 1989

Fig. 2b Shoreline changes in Jambu Island during 1924-2008

1955 1975 1989

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1924 1955 1975

Fig. 2c Shoreline changes in Thakuran island during 1924-2008

1989

1999 2002 2005 2008

Fig. 3a Temporal variation of fish and phytoplankton diversity index (H) in the western and central sectors of Indian Sunderbans

Fig. 3b Temporal variation of phytoplankton standing stock (N) in the western and central sectors of Indian Sunderbans

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1990 1995 2000 2005 2010

Bio

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ar H

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Western phytoplankton Central phytoplanktonWestern Commercially important fishes Western trash fishesCentral Commrcially important fishes Central trash fishes

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Fig. 4 Seasonal variation of AGB of (a) Sonneratia apetala, (b) Avicennia alba and (c) Excoecaria agallocha in the selected stations during 2009-2010; x-axis depicts the number of stations and y-axis the ABG value up to 70 t/ha

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pom2010

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mon2009

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(c)