Ecological Archives E089-089-A3

Brenda J. Grewell. 2008. Parasite facilitates plant species coexistence in a coastal wetland. Ecology 89:1481–1488.

Appendix C. MANOVA/ANOVA tables showing the effects of Cuscuta salina removal on fitness indicators of the dominant host Plantago maritima and the rare Cordylanthus maritimus ssp. palustris.

TABLE B1. Results of MANOVA and "protected" univariate F test results on the effect of Cuscuta removal on log-transformed fitness indicators of the dominant host Plantago maritima following 16 weeks of parasitism. Host fitness metrics include rosette growth (increase in rosette diameter), total dry biomass, increase in number of inflorescences, and total aggregated inflorescence spike length per plant.

MANOVA

Wilks' Lambda

F

df (effect)

df (error)

PR>F

(GLM)

0.60

9.01

4

55

< 0.0001

ANOVA

         

Variation

SS

df

MS

F

PR>F

Rosette growth

13.82

1

13.82

37.17

< 0.0001

Total biomass

22.09

1

22.09

22.53

< 0.0001

Inflorescence count

44.98

1

44.98

16.57

< 0.0001

Inflorescence length

67.97

1

67.97

16.87

< 0.0001

Error

470.89

232

2.03

   

 

TABLE B2. Results of MANOVA and "protected" univariate F test results on the effect of Cuscuta removal on log-transformed fitness indicators of Cordylanthus maritimus ssp. palustris. Hemiparasite fitness indicators measured at reproductive maturity include height, number of branches, flower production, seed capsules set, seed capsules matured, and total plant biomass.

MANOVA

Wilks' Lambda

F

df (effect)

df (error)

PR>F

(GLM)

0.39

67.97

6

255

< 0.0001

ANOVA

         

Variation

SS

df

MS

F

PR>F

Hemiparasite height

10.80

1

10.80

359.53

< 0.0001

Branches

571.71

1

571.71

147.83

< 0.0001

Flower production

77.33

1

77.33

281.37

< 0.0001

Seed capsules set

71.46

1

71.46

160.90

< 0.0001

Seed capsules mature

80.27

1

80.27

90.65

< 0.0001

Total biomass

99.63

1

99.63

296.41

< 0.0001

Error

1807.37

1560

1.16

   

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