221
The mean AGC of A. alba seedlings exhibits similar trend with mean AGB
(Figs. 7.24, 7.25, 7.26, and 7.27).
Avicennia officinalis Seedlings
It is observed from Table 7.5 that the spatial order of mean AGB of A. officinalis
seedlings is central sector > western sector > eastern sector and this order holds good
for each of the vegetative parts of the seedlings (Figs. 7.28, 7.29, 7.30, and 7.31).
The mean AGC of A. officinalis seedlings exhibits similar trend with mean AGB
(Figs. 7.32, 7.33, 7.34, and 7.35).
Excoecaria agallocha Seedlings
It is observed from Table 7.6 that the spatial order of mean AGB of E. agallocha
seedlings is central sector > western sector > eastern sector and this order holds
good for each of the vegetative parts of the seedlings including the total biomass
(Figs. 7.36, 7.37, 7.38, and 7.39).
The mean AGC of E. agallocha seedlings exhibits similar trend with AGB
(Figs. 7.40, 7.41, 7.42, and 7.43).
Phase 2: Assessment of Stored Carbon and Nitrogen
in 11 Years Old Trees of 5 Dominant Mangrove Floral Species
Mangrove trees assimilate and transform atmospheric carbon dioxide into organic
compounds (glucose) through the process of photosynthesis to manufacture new
leaves, roots, branches, and stem tissue; maintain existing tissue; create storage
reserves; and develop chemical defenses. This feature is common to all terrestrial
trees, but what is uncommon is the adaptation of mangroves to survive and grow in
salty aquatic phase. Living in salty, anoxic soils, mangroves use an advantageous
strategy of minimizing water loss and maximizing carbon gain by being highly
efficient in water use and transpiration and by exhibiting physiological plasticity in
relation to changes in environmental conditions (Ball 1996; Krauss and Ball 2013).
Salinity, being the primary driver in coastal and estuarine systems greatly influence
the biomass and carbon sequestration potential of mangroves. In this study it has
been evaluated critically that how the biomass and carbon storage is affected by
salinity in mangrove trees and for this I have examined the same species (namely
Sonneratia apetala, Avicennia marina, Avicennia alba, Avicennia officinalis and
Excoecaria agallocha) in the same plots in every stations, which were selected for
seedling studies to maintain the uniformity in physico-chemical drivers that influence the survival and growth of the species.
Phase 2: Assessment of Stored Carbon and Nitrogen in 11 Years Old Trees of 5…
The mean AGC of A. alba seedlings exhibits similar trend with mean AGB
(Figs. 7.24, 7.25, 7.26, and 7.27).
Avicennia officinalis Seedlings
It is observed from Table 7.5 that the spatial order of mean AGB of A. officinalis
seedlings is central sector > western sector > eastern sector and this order holds good
for each of the vegetative parts of the seedlings (Figs. 7.28, 7.29, 7.30, and 7.31).
The mean AGC of A. officinalis seedlings exhibits similar trend with mean AGB
(Figs. 7.32, 7.33, 7.34, and 7.35).
Excoecaria agallocha Seedlings
It is observed from Table 7.6 that the spatial order of mean AGB of E. agallocha
seedlings is central sector > western sector > eastern sector and this order holds
good for each of the vegetative parts of the seedlings including the total biomass
(Figs. 7.36, 7.37, 7.38, and 7.39).
The mean AGC of E. agallocha seedlings exhibits similar trend with AGB
(Figs. 7.40, 7.41, 7.42, and 7.43).
Phase 2: Assessment of Stored Carbon and Nitrogen
in 11 Years Old Trees of 5 Dominant Mangrove Floral Species
Mangrove trees assimilate and transform atmospheric carbon dioxide into organic
compounds (glucose) through the process of photosynthesis to manufacture new
leaves, roots, branches, and stem tissue; maintain existing tissue; create storage
reserves; and develop chemical defenses. This feature is common to all terrestrial
trees, but what is uncommon is the adaptation of mangroves to survive and grow in
salty aquatic phase. Living in salty, anoxic soils, mangroves use an advantageous
strategy of minimizing water loss and maximizing carbon gain by being highly
efficient in water use and transpiration and by exhibiting physiological plasticity in
relation to changes in environmental conditions (Ball 1996; Krauss and Ball 2013).
Salinity, being the primary driver in coastal and estuarine systems greatly influence
the biomass and carbon sequestration potential of mangroves. In this study it has
been evaluated critically that how the biomass and carbon storage is affected by
salinity in mangrove trees and for this I have examined the same species (namely
Sonneratia apetala, Avicennia marina, Avicennia alba, Avicennia officinalis and
Excoecaria agallocha) in the same plots in every stations, which were selected for
seedling studies to maintain the uniformity in physico-chemical drivers that influence the survival and growth of the species.
Phase 2: Assessment of Stored Carbon and Nitrogen in 11 Years Old Trees of 5…