Trees in seasonal climates may use water originating from both winter and summer precipitation. However, the seasonal origins of water used by trees have not been systematically studied. We used stabl
Studies of trophic interactions give valuable insights into the functioning of ecosystems and can be used to identify qualitative differences among ecosystems. Here, we use natural stable isotope conc
Figure 1. Study area: harbor seal haul-out sites west off the Baja California peninsula, Mexico.Figure 2. δ15N and δ13C values (mean ± SD) of Pacific harbor seal pup samples at different sites along t
Stable carbon and nitrogen isotope compositions for archaeological ringed seal bone collagen from sites in the central Canadian Arctic. Also included are elemental (%C and %N) compositions of the bone
The purpose of these data was to analyze sea otter diets around Prince of Wales Island (POW). Sea otter prey was collected in three seasons (May 2018, August 2018, and February 2019) around Prince of