101
Table 4.2 Avarage Nitrogen/Phosphorus ratios in different seasons in the three sampling stations
N/P ratio
Seasons
Stations
Premonsoon
Monsoon
Postmonsoon
Diamond Harbour
15.53
12.60
17.04
Namkhana
12.26
8.85
10.18
Ajmalmari
14.55
15.39
14.18
Table 4.3 Concentrations of
nitrogen (N) and phosphorus
(P) (in mg g
−1 dry mass basis)
in senesced leaves of true
mangrove floral species
inhabiting the intertidal
mudflat of Muriganga
(21°38′25.86′′N,
88°08′53.55′′E)
Scientific name
N
P
Acanthus ilicifolius
11.9 0.8
Acanthus volubilis
11.7 0.7
Aegiceras corniculatum
8.6 0.8
Aegialites rotundifolia
5.4 0.5
Amoora cucullata
6.8 0.6
Avicennia alba
10.7 1.0
Avicennia marina
11.5 1.1
Avicennia officinalis
12.3 1.2
Brownlowia tersa
13.7 1.2
Bruguiera cylindrica
2.8 0.1
Bruguiera gymnorhiza
2.1 0.2
Bruguiera hexangula
2.9 0.1
Bruguiera parviflora
2.6 0.3
Ceriops decandra
11.9 1.1
Ceriops tagal
14.0 1.2
Cynometra ramiflora
10.7 1.0
Derris trifoliata
7.6 0.7
Derris umbellatum
8.2 0.8
Excoecaria agallocha
7.0 0.7
Excoecaria bicolor
8.8 0.8
Heritiera fomes
4.9 0.4
Hibiscus tortuosus
9.3 0.9
Kandelia candel
10.5 1.0
Lumnitzera racemosa
8.8 0.8
Nypa fruticans
3.9 0.3
Phoenix paludosa
12.0 1.2
Rhizophora apiculata
11.9 1.1
Rhizophora mucronata
12.2 1.2
Sonneratia apetala
2.3 0.2
Sonneratia caseolaris
2.0 0.2
Tamarix dioica
13.8 1.2
Tamarix gallica
12.4 1.2
Xylocarpus granatum
9.3 0.9
Xylocarpus mekongensis 8.7 0.8
4 Mangroves: A Nutrient Retention Box
Table 4.2 Avarage Nitrogen/Phosphorus ratios in different seasons in the three sampling stations
N/P ratio
Seasons
Stations
Premonsoon
Monsoon
Postmonsoon
Diamond Harbour
15.53
12.60
17.04
Namkhana
12.26
8.85
10.18
Ajmalmari
14.55
15.39
14.18
Table 4.3 Concentrations of
nitrogen (N) and phosphorus
(P) (in mg g
−1 dry mass basis)
in senesced leaves of true
mangrove floral species
inhabiting the intertidal
mudflat of Muriganga
(21°38′25.86′′N,
88°08′53.55′′E)
Scientific name
N
P
Acanthus ilicifolius
11.9 0.8
Acanthus volubilis
11.7 0.7
Aegiceras corniculatum
8.6 0.8
Aegialites rotundifolia
5.4 0.5
Amoora cucullata
6.8 0.6
Avicennia alba
10.7 1.0
Avicennia marina
11.5 1.1
Avicennia officinalis
12.3 1.2
Brownlowia tersa
13.7 1.2
Bruguiera cylindrica
2.8 0.1
Bruguiera gymnorhiza
2.1 0.2
Bruguiera hexangula
2.9 0.1
Bruguiera parviflora
2.6 0.3
Ceriops decandra
11.9 1.1
Ceriops tagal
14.0 1.2
Cynometra ramiflora
10.7 1.0
Derris trifoliata
7.6 0.7
Derris umbellatum
8.2 0.8
Excoecaria agallocha
7.0 0.7
Excoecaria bicolor
8.8 0.8
Heritiera fomes
4.9 0.4
Hibiscus tortuosus
9.3 0.9
Kandelia candel
10.5 1.0
Lumnitzera racemosa
8.8 0.8
Nypa fruticans
3.9 0.3
Phoenix paludosa
12.0 1.2
Rhizophora apiculata
11.9 1.1
Rhizophora mucronata
12.2 1.2
Sonneratia apetala
2.3 0.2
Sonneratia caseolaris
2.0 0.2
Tamarix dioica
13.8 1.2
Tamarix gallica
12.4 1.2
Xylocarpus granatum
9.3 0.9
Xylocarpus mekongensis 8.7 0.8
4 Mangroves: A Nutrient Retention Box