Lindsy Ciepiela just published two papers in CJFAS. Her work examines the utility of 87Sr/86Sr for use in tracking fish movement and shows how it can provide insight into life-history variation of Brown Trout and Rainbow Trout. Check out her two papers:
Quantifying 87Sr/86Sr temporal stability and spatial heterogeneity for use in tracking fish movement
https://www.nrcresearchpress.com/doi/full/10.1139/cjfas-2018-0124
Life-history variation of two inland salmonids revealed through otolith microchemistry analysis
https://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2018-0087