Environmental Engineering Reference
In-Depth Information
Table 6.4
Concentrations of total carbon (% dry wt.) in
the soft tissues and shells of the investigated gastropod
species (mean values and standard deviations) in the
central Indian Sundarbans
Species
stations during April 2013, the pre-monsoon
season in the study area and characterized by
high salinity, pH and temperature. A detailed
report of the analysis of similar nature was con-
ducted during April 2013.
Carbon
Tissues
Shells
Telescopium
telescopium
36.89
±
0.70
12.99
±
0.75
6.3
Stored Carbon in Coral Reefs
Nerita articulata
37.98
±
0.95
13.83
±
0.14
39.40
±
0.55
13.78
±
0.19
Cerithedia obtusa
Coral reefs are recognized as one of the major
geological
Cerithedia cingulata
35.99
±
0.77
12.66
±
0.19
s surface,
although they occupy only about 0.2 % of the
world
features of
the
earth
'
s ocean area (Smith and Jokiel
1978
).
They support the highest marine biodiversity in
the world, containing an estimated 25 % of all
marine species. They are often regarded as the
oases of the ocean. More than 500 million people
worldwide depend on them for food, storm pro-
tection, jobs and recreation. Unfortunately, many
of the world
'
Table 6.5
Concentrations of total carbon (% dry wt.) in
the soft tissues and shells of the investigated gastropod
species (mean values and standard deviations) in the
western Indian Sundarbans
Species
Carbon
Tissues
Shells
Telescopium
telescopium
34.95
±
0.78
12.42
±
0.22
s coral reefs have been degraded,
mainly due to human activities. According to the
researchers, about 19 % of the original area of
coral reefs have been lost since 1950, 15 % of
coral reefs are in a critical state with loss possible
'
Nerita articulata
35.75
±
0.93
13.21
±
0.20
Cerithedia obtusa
37.80
±
0.90
13.69
±
0.34
Cerithedia cingulata
34.86
±
1.02
12.20
±
0.18
Fig. 6.18
Bed of
Telescopium telescopium
on the mangrove detritus of intertidal mud
fl
ats
