Table 2. Summary of all bee taxa captured during the study (γ-diversity) and their abundances.

Family	Genus	species	Habitat category
			cattle-grazed	high cheatgrass cover	low cheatgrass cover
Apidae	Anthophora	affabilis	37	40	31
		bomboides	0	5	2
		montana	43	50	29
		occidentalis	56	26	26
	Apis	mellifera	18	33	40
	Bombus	appositus	36	60	59
		bifarius	1	0	1
		californicus	0	0	2
		centralis	0	2	2
		fervidus	36	113	104
		griseocollis	9	18	19
		huntii	4	28	19
		insularis	0	1	0
		nevadensis	46	157	85
		pensylvanicus	114	197	170
		rufocinctus	2	7	4
		sylvicola	2	6	3
	Diadasia	enavata	23	2	4
	Eucera	hamata	14	60	30
		lepida	0	4	0
	Melecta	pacifica	3	15	10
	Melissodes	agilis	120	49	90
		communis	148	131	117
		coreopsis	28	16	37
		sp.1	6	3	6
		tristis	143	64	65
	Svastra	obliqua	45	104	94
		petulca	3	5	10
	Xeromelecta	interrupta	5	16	5
Colletidae	Colletes	sp.1	2	0	0
Halictidae	Agapostemon	angelicus	24	18	11
		coloradinus	7	1	3
		texanus	14	29	25
		virescens	27	37	14
	Augochlorella	aurata	8	14	3
	Halictus	halictus.spp	20	24	33
		ligatus	8	9	3
		tripartitus	139	114	96
	Lasioglossum	dialictus	51	117	64
	Lasioglossum	sp.1	8	12	13
Megachilidae	Anthidium	sp.1	0	7	6
	Lithurgopsis	apicalis	6	10	10
	Megachile	dentitarsus	1	1	2
		sp.1	2	13	4
		sp.2	23	38	25
		sp.3	2	0	2
	Osmia	sp.1	6	18	2
		sp.2	4	15	1
		sp.3	1	1	2

Values are total abundances of captured bee species across sampled habitat types, pooled across sites.