Depth segregation and diet disparity revealed by stable isotope analyses in sympatric herbivorous cichlids in Lake Tanganyika

Table 7 Results of generalized linear mixed model for testing the effect of δ¹³ C/δ¹⁵ N in the periphyton within territories and the effect of fish ecomorph on δ¹³ C/δ¹⁵ N of cichlid muscles

	Estimate	SE	DF	t value	p
δ¹³C
(Intercept)	1.7	4.8	5.1	0.4	NS
δ¹³C in periphyton	1.1	0.4	5.1	3.0	<0.05
grazer in ecomorph	0.6	1.6	5.0	0.4	NS
scraper in ecomorph	0.3	2.8	5.0	0.1	NS
δ¹⁵N
(Intercept)	5.8	0.6	5.0	10.0	<0.001
δ¹⁵N in periphyton	0.5	0.5	5.0	1.0	NS
grazer in ecomorph	−0.6	0.6	5.0	−0.9	NS
scraper in ecomorph	−0.2	1.1	5.0	−0.2	NS

Fish species are included as a random factor. SE, standard error; DF, degree of freedom.

ISSN: 2056-306X