Table A2.

Top 10 triplet of bio-tracers. Abbreviations are as follows: **bt** bio-tracer, **op** overall performance. The most left column indicates the rank of the combination.

	LDA				NBC				MLP
	bt 1	bt 2	bt 3	op	bt 1	bt 2	bt 3	op	bt 1	bt 2	bt 3	op
1	C18:1	C20:5n-3	C22:1	0.833	${\delta }^{15}N$	C18:1	C18:4n-3	0.805	C18:1	C20:4n-3	C22:5n-3	0.873
2	C18:1	C20:5n-3	C22:6n-3	0.793	C18:1	C18:4n-3	C22:5n-3	0.791	C18:3n-3	C20:5n-3	C22:1	0.851
3	${\delta }^{15}N$	C20:5n-3	C22:1	0.787	${\delta }^{15}N$	C18:1	C22:5n-3	0.779	C18:1	C20:5n-3	C22:1	0.833
4	C16:0	C18:1	C20:5n-3	0.771	C18:1	C20:4n-3	C22:5n-3	0.779	C18:1	C20:4n-3	C20:5n-3	0.832
5	C18:0	C18:1	C20:4n-3	0.769	C18:1	C18:4n-3	C20:5n-3	0.775	${\delta }^{15}N$	C20:5n-3	C22:1	0.828
6	C18:1	C20:4n-3	C22:6n-3	0.769	C18:1	C18:3n-3	C22:5n-3	0.773	C18:3n-3	C20:4n-3	C22:5n-3	0.828
7	C20:1	C20:4n-3	C22:6n-3	0.762	${\delta }^{15}N$	C18:4n-3	C22:5n-3	0.771	C20:5n-3	C22:1	C22:5n-3	0.826
8	C18:1	C20:1	C20:5n-3	0.759	${\delta }^{15}N$	C18:1	C20:5n-3	0.765	C18:4n-3	C20:5n-3	C22:1	0.814
9	C18:0	C18:1	C20:5n-3	0.758	${\delta }^{15}N$	C18:1	C20:4n-3	0.762	C18:1	C18:3n-3	C20:4n-3	0.812
10	${\delta }^{15}N$	C18:1	C20:4n-3	0.755	${\delta }^{15}N$	C18:1	C18:3n-3	0.761	C18:3n-3	C22:5n-3	C22:6n-3	0.810