Table 2. Predictions of the superior organism and trade-off theories. Those predictions upheld by the data are shown in boldface. Ecological breadth groups: WGS, wet-grassland specialists; WGG, wet-grassland generalists; MHG, mesic-habitat generalists.

 

	Theory
	Superior organism	Trade-off
Most frequent categories	Common and endangered	Sparse and endemic indicators
A) Correlations among traits
Geographic range and local abundance	positive	negative
Habitat specificity and local abundance	positive	negative
Habitat specificity and habitat occupancy	positive	negative
B) Ordering of ecological breadth groups
Geographic range	MHG>WGG>WGS	MHG>WGG>WGS
Habitat specificity	WGS=WGG>MHG	MHG>WGG>WGS
Local abundance	WGS=WGG>MHG	WGS>WGG>MHG
Habitat occupancy	MHG>WGG>WGS	WGS>WGG>MHG