. 2022 Feb 10;12:807512. doi: 10.3389/fmicb.2021.807512

TABLE 2.

Effect of regions located at distinct altitudes on alpha diversity of yak rumen microbiota.

Indices	Groups¹			SEM	P-value
	HAL	MAL	LAL
Chao1	4373^a	3431.5^b	4203.7^a	168.51	<0.001
Observed_species	3408.6^a	2621.1^b	3234.6^a	157.28	<0.001
Shannon	9.28^a	8.53^b	9.19^a	0.27	<0.001
Simpson	0.994^a	0.987^b	0.991^ab	0.003	<0.001

¹HAL, high-altitude region (Zhongba County, Xigatse City; 4,800 m); MAL, medium-altitude region (Nagqu City; 4,500 m); LAL, low-altitude region (Dangxiong County, Lhasa City; 3,800 m).

Different superscript letters in the same row denote significant differences (p < 0.05).