Consistent patterns in trophic partitioning between sympatric salmonid fishes in two rivers of contrasting productivity | Knowledge and Management of Aquatic Ecosystems

Management of habitats and populations/communities

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Table 2

Results of linear regression testing the relationship of fish length versus stable isotope values and metrics, where *significant relationship (P ≤ 0.05).

River	Species	Isotope	Regression output
Frome	Salmon	δ¹³C	R² = 0.03; F_1,89 = 2.97, P = 0.88
	Salmon	δ¹⁵N	R² = 0.30; F_1,89 = 37.28, P < 0.001*
	Trout	δ¹³C	R² = 0.51; F_1,95 = 101.61, P < 0.001*
	Trout	δ¹⁵N	R² = 0.43; F_1,95 = 70.40, P < 0.001*

Teign	Salmon	δ¹³C_corr	R² = 0.03; F_1,233 = 3.95, P = 0.05*
	Salmon	TP	R² = 0.04; F_1,233 = 4.92, P = 0.03*
	Trout	δ¹³C_corr	R² = 0.24; F_1,140 = 46.58, P < 0.001*
	Trout	TP	R² = 0.01; F_1,140 = 0.01, P = 0.95

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