What can stable isotope analysis of top predator tissues contribute to monitoring of tundra ecosystems?

D. Ehrich, R.A. Ims, N.G. Yoccoz, N. Lecomte, S.T. Killengreen, E. Fuglei, A.Y. Rodnikova, B.S. Ebbinge, I.E. Menyushina, Bart Nolet, I.G. Prokovsky, I.Y. Popov, N.M. Schmidt, A. Sokolov, N.A. Sokolova, V.A. Sokolov