Figure 1.

δ15N values in riparian vegetation collected immediately below and above waterfall barriers to salmon at Clatse and Neekas rivers, B.C. T-test results: * denotes p < 0.05; ** denotes p < 0.01.

Mathewson et al. BMC Ecology 2003 3:4   doi:10.1186/1472-6785-3-4
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