Diet segregation in American bison (Bison bison) of Yellowstone National Park (Wyoming, USA)

BMC Ecology

Table 1 Structure and sample size for MANOVA models

H_a	x	y	Time period	Sample size		Model ID
H_a	x	y	Time period	Female	Male	Model ID
1	Sex	δ¹³C_feces, %N_feces	Mating season	30	29	1
2	Sex	δ¹³C_collagen, δ¹⁵N_collagen	Multi-year	24	16	2
3	Sex, CR	δ¹³C_feces, %N_feces	Mating season	15	14	3.1
3	Sex, CR	δ¹³C_collagen, δ¹⁵N_collagen	Multi-year	13	12	3.2
4	Sex, NR	δ¹³C_feces, %N_feces	Mating season	15	15	4.1
4	Sex, NR	δ¹³C_collagen, δ¹⁵N_collagen	Multi-year	11	4	4.2

Models tested whether diet varies as a function of sex and range between mating season and a multi-year time period. To test hypotheses 3 and 4, we subset the data for each range (CR, Central Range; NR, Northern Range), and analyzed the effect of sex on proxy measures for diet within each range. Columns labeled “x” and “y” denote the independent and dependent variables, respectively, for each model

ISSN: 1472-6785