Table 12.1. Interspecific variation in gas exchange characteristics and in the display and properties of exposed leaves in relation to salinity
tolerance in the Rhizophoraceae. Species are listed in order of increasing salinity tolerance, with
Bruguiera gymnorrhiza being the least salttolerant. Values for dA/dg were calculated by linear regression of the assimilation rate (!lmol COz m-Zs- 1
)
as a function of stomatal
conductance to water vapor (mmolm-Zs- 1
)
with variation in irradiance, leaf temperature, and leaf-to-air vapor pressure difference. dw dry
weight. (After Ball 1988a)
Species
dA/dg
Rosette area (cm 2
)
Area per leaf (cmZ)
Specific leaf weight
Succulence
(!lmol/mmol)
(gdwm-Z)
(g water m- Z
)
Total
Projected
Total
Projected
Bruguiera gymnorrhiza
0.072
635
356
58
32
133.1
262.5
Rhizophora apiculata
0.096
553
196
69
25
148.8
348.4
Rhizophora stylosa
0.101
419
126
44
13
169.3
387.9
Ceriops tagal
0.113
102
39
8
3
189.2
463.2
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