249
fish landing activities also pose adverse impact on the floral diversity of the sampling
station. Sagar South, located in the western sector of Indian Sundarbans is within the
navigational route of the ships. Moreover, fish landing and drying activities coupled
with the negative impact of pilgrims experienced during the month of January is a
Table 8.4 Spatio- temporal variation of Shannon Weiner Species Diversity Index
Station no.
Name
2016
2017
2018
1.
Harinbari (Stn. 1)
2.3328
2.3313
2.3007
2.
Chemaguri (Stn. 2)
2.3017
2.2587
2.2469
3.
Sagar South (Stn. 3)
2.2459
2.2533
2.2409
4.
Lothian island (Stn. 4)
2.6344
2.6290
2.6086
5.
Prentice island (Stn. 5)
2.4509
2.4739
2.4766
6.
Canning (Stn. 6)
2.0661
2.0661
2.0524
7.
Sajnekhali (Stn. 7)
2.3901
2.3852
2.3852
8.
Chotomollakhali (Stn. 8)
2.0967
2.0922
2.0662
9.
Satjelia (Stn. 9)
2.1284
2.1405
2.1307
10.
Pakhiralaya (Stn. 10)
2.3454
2.3659
2.3068
Fig. 8.4 Spatio-temporal variations of Shannon Weiner Species Diversity Index computed on the
basis of relative abundance of true mangrove floral species
Floral Biodiversity