Ecological Archives E093-052-A3

Yihui Zhang, Guanmin Huang, Wenqing Wang, Luzhen Chen, Guanghui Lin. 2012. Interactions between mangroves and exotic Spartina in an anthropogenically disturbed estuary in southern China. Ecology 93:588–597.

Appendix C (TABLE C1). A table presenting density and vegetative growth, and lateral expansion of Spartina alterniflora stands along a salinity gradient in Zhangjiang Estuary in 2007. Data were shown as means ± 1 SE. ND = no data (because measurement started at early growth stage, and data for expansion were calculated between stages). Data were analyzed with ANOVA followed by Tukey’s HSD tests.

Parameters Location Growth stage
Early Middle Reproductive
Height
(cm)
Oligohaline 53.7 ± 3.3a 224.1 ± 3.2a 250.0 ± 3.3a
Mesohaline 42.9 ± 2.5b 178.5 ± 2.0b 199.0 ± 3.2b
Polyhaline 25.2 ± 2.7c 143.8 ± 5.5c 176.7 ± 4.0c
Euhaline 11.4 ± 0.8d 67.4 ± 2.0d 81.9 ± 2.6d
ANOVA F = 66.95
P < 0.001
F = 566.36
P < 0.001
F = 389.54
P < 0.001
Stem Diameter
(cm)
Oligohaline 1.0 ± 0.1a 1.4 ± 0.0a 1.2 ± 0.0a
Mesohaline 0.8 ± 0.0b 1.2 ± 0.0b 0.9 ± 0.0b
Polyhaline 0.7 ± 0.0c 1.0 ± 0.0c 0.8 ± 0.0c
Euhaline 0.5 ± 0.0d 0.7 ± 0.0d 0.4 ± 0.0d
ANOVA F = 29.37
P < 0.001
F = 80.64
P < 0.001
F = 156.61
P < 0.001
Leaf Number
(per shoot)
Oligohaline 4.6 ± 0.3a 10.0 ± 0.4a 11.9 ± 0.6a
Mesohaline 3.7 ± 0.1b 11.3 ± 0.4a 11.8 ± 0.4a
Polyhaline 4.5 ± 0.3ab 10.0 ± 0.5a 11.1 ± 0.3a
Euhaline 3.7 ± 0.2b 8.1 ± 0.2b 8.0 ± 0.4b
ANOVA F = 4.58
P = 0.006
F = 11.04
P < 0.001
F = 17.91
P < 0.001
Leaf Area
(cm2/shoot)
Oligohaline 103.9 ± 9.1a 1294.7 ± 79.8a 1249.5 ± 65.2a
Mesohaline 63.0 ± 5.3b 1016.3 ± 41.9b 854.0 ± 46.2b
Polyhaline 55.9 ± 8.3b 873.8 ± 50.2b 728.5 ± 42.5b
Euhaline 14.2 ± 1.8c 166.8 ± 11.2c 109.5 ± 11.5c
ANOVA F = 34.60
P < 0.001
F = 98.28
P < 0.001
F = 105.70
P < 0.001
Dry Weight
(g/shoot)
Oligohaline 1.4 ± 0.1a 38.4 ± 3.9a 66.6 ± 3.1a
Mesohaline 1.2 ± 0.1a 27.9 ± 1.0ab 41.8 ± 6.7b
Polyhaline 0.5 ± 0.0b 22.4 ± 6.1b 30.1 ± 4.2b
Euhaline 0.3 ± 0.0b 5.1 ± 0.6c 9.1 ± 1.5c
ANOVA F = 64.82
P < 0.001
F = 14.40
P < 0.001
F = 31.00
P < 0.001
Density
(shoot/m2)
Oligohaline 51.5 ± 1.2c 46.0 ± 4.7b 33.0 ± 2.4b
Mesohaline 134.0 ± 11.6b 119.0 ± 6.6a 90.8 ± 7.7a
Polyhaline 116.5 ± 8.8bc 111.0 ± 4.7a 89.5 ± 5.3a
Euhaline 372.5 ± 31.9a 30.5 ± 6.9b 12.5 ± 2.2b
ANOVA F = 64.11
P < 0.001
F = 59.42
P < 0.001
F = 64.04
P < 0.001
Aboveground
Biomass (g/m2)
Oligohaline 66.4 ± 8.6bc 1731.6 ± 148.1c 2182.6 ± 110.6b
Mesohaline 158.0 ± 11.4a 3298.9 ± 88.8a 3640.2 ± 262.0a
Polyhaline 60.2 ± 2.4c 2440.7 ± 91.5b 2717.1 ± 477.9ab
Euhaline 105.4 ± 15.4b 166.2 ± 55.5d 124.1 ± 40.6c
ANOVA F = 18.16
P < 0.001
F = 170.59
P < 0.001
F = 28.50
P < 0.001
Distance of
Expansion (cm)
Oligohaline ND 161.3 ± 12.0a 43.3 ± 13.2ab
Mesohaline ND 220.0 ± 20.1a 45.3 ± 12.3ab
Polyhaline ND 187.5 ± 14.9a 76.8 ± 9.9a
Euhaline ND 82.5 ± 6.3b 15.0 ± 3.5b
ANOVA ND F = 17.01
P < 0.001
F = 5.84
P = 0.011

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