δ13C‐δ15N values as indicators of trophic position and competitive overlap for Pacific salmon (Oncorhynchus spp.)

• Published in: Fisheries Oceanography
• Main Authors: WELCH, DAVID W., PARSONS, TIMOTHY R.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1993
• Subjects: Gulf of Alaska; Pacific; Sockeye; Pink salmon; Alaska
• Online Access: http://dx.doi.org/10.1111/j.1365-2419.1993.tb00008.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.1993.tb00008.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.1993.tb00008.x

ABSTRACT Analysis of δ 13 C and δ 15 N isotope values for five species of Pacific salmon indicate that they form a trophic hierarchy on the high seas. On the basis of an analysis of these stable isotope ratios, chinook salmon feed at the upper end of the food chain and pink salmon at the lower end,...