Diego P. Vázquez and Daniel Simberloff. 2004. Indirect effects of an introduced ungulate on pollination and plant reproduction. Ecological Monographs 74:281–308.

Appendix I. Fit statistics for structural equation models used to study the relationship between floral neighborhood density, pollinator visitation, pollination, and reproduction of Alstroemeria aurea in grazed sites.

	Full model					Reduced model					difference
Site		df	P	NFI			df	P	NFI			df	P
Arroyo Goye	5.29	5	0.3810	0.94		4.96	3	0.1748	0.96		0.33	2	0.8479
Cerro López	11.26	5	0.0465	0.91		2.68	2	0.2624	0.98		8.58	3	0.0354
Mascardi	32.04	5	<.0001	0.39		3.87	2	0.1445	0.75		28.17	3	<.0001
Quetrihué	8.72	5	0.1210	0.86		4.76	4	0.3131	0.91		3.96	1	0.0466

   Notes: Fit statistics are maximum likelihood statistic and associated degrees of freedom (df) and probability value (P), and Normed Fit Index (NFI). Full model corresponds to Fig. 5; reduced models (Fig. 14) were obtained by constraining nonsignificant paths to zero. Analysis was conducted using the CALIS procedure in SAS, using observed covariance matrices given in Appendix K.