Ecological Archives A018-046-A3

Brenda J. Grewell. 2008. Hemiparasites generate environmental heterogeneity and enhance species coexistence in salt marshes. Ecological Applications 18:1297–1306.

Appendix C. ANOVA tables for the effects of parasitic plant removal on arcsine-transformed relative abundance of host-plant community associates.

TABLE C1. ANOVA table for the effects of parasitic plant removal on arcsine-transformed relative abundance of host-plant community associates. Results are based on repeated-measures analysis over three years of experimental removals from permanent plots. When a significant effect was detected, the direction of the response is indicated (positive response = +, negative response = -). Data for species in only a small fraction of plots are excluded.

HILL SLOUGH-SUISUN, SAN FRANCISCO ESTUARY:
 
Parasite removal
Species
F
P
Direction
Aster subulatus var. ligulatus
2.58
0.147
 
Atriplex prostrata
4.88
0.058
-
Distichlis spicata
7.83
0.023
+
Frankenia salina
0.63
0.548
 
Limonium californicum
1.12
0.321
 
Polypogon monspeliensis
1.482
0.258
 
Sarcocornia pacifica
27.79
0.001
+
Triglochin maritima
14.49
0.005
-
       
       
TOM'S POINT, TOMALES BAY ESTUARY:
 
Parasite removal
Species
F
P
Direction
Distichlis spicata
2.19
0.177
 
Frankenia salina
11.88
0.009
-
Isolepis cernuus
73.15
<0.0001
-
Jaumea carnosa
11.12
0.01
+
Limonium californicum
4.81
0.06
 
Sarcocornia pacifica
7.16
0.028
+
Spergularia macrotheca
5.97
0.04
-
Triglochin concinna
17.28
0.003
-

   Note: for all species, df = 1,8

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