Environmental Engineering Reference
In-Depth Information
Fig. 6.11
Increasing trend
in aquatic salinity over a
period of 23 years
(1990
-
2012) in central
Indian Sundarbans (Graph
designed in MATLAB by
Dr. Nibedita
Mukhopadhyay,
Environmentalist)
Fig. 6.12
Decreasing
trend in aquatic salinity
over a period of 23 years
(1990
-
2012) in eastern
Indian Sundarbans (Graph
designed in MATLAB by
Dr. Nibedita
Mukhopadhyay,
Environmentalist)
in calcareous shell ranged from 1102.62 kg m
−
2
(during 2009 in the eastern sector of Indian
Sundarbans) to 3236.90 kg m
−
2
(during 1991 in
the western sector), which means a sequestration
of 47.94
the soft tissue of oyster is
40 %, whereas in the
*
calcareous shell, it is
ndings
were also reported by Jurkiewicz-Karnkowska
(
2005
).
Many studies on the role of molluscs in
aquatic ecosystems take into account only
soft tissues. The organic fraction remains
underestimated in molluscan shells which may
contain considerable amounts of macroelements.
13 %. Similar
*
140.74 kg m
−
2
year
−
1
. The values are,
however, pH dependent, and therefore, liming
the culture area is essential for oyster farming
and subsequent carbon sequestration. In the
present case study, it was observed that carbon in
-
