Stable isotope analysis (SIA) has emerged as a common tool in ecology and has proven
especially useful in the study of animal diet, habitat use, movement, and physiology. SIA has …

Abstract The Galapagos sea lion, Zalophus wollebaeki (GSL), is endemic to the Galapagos
Archipelago and is considered endangered by the International Union for Conservation of …

The abundance of California sea lions (Zalophus californianus)(CSLs) and Guadalupe fur
seals (Arctocephalus philippii townsendi)(GFSs) from the San Benito Archipelago (SBA) was …

Understanding spatial structure and identifying subpopulations are critical for estimating
population growth rates and extinction risk, and as such essential for effective conservation …

The feeding behavior of marine predators varies with the level of competition to which they
are exposed. Populations living in the same or overlapping geographic regions (sympatric) …

The population growth of top predators depends largely on environmental conditions
suitable for aggregating sufficient and high-quality prey. We reconstructed numerically the …

Stable isotopes are important tools for understanding the trophic roles of elasmobranchs.
However, whether different tissues provide consistent stable isotope values within an …

The Guadalupe fur seal (GFS) currently is recovering from near extinction and prey
availability is an important factor. Scat and stable isotope analyses (SIA) were used to …

We used stable carbon (δ 13 C) and nitrogen (δ 15 N) isotope analysis to investigate the
trophic ecology of 8 small cetacean species of the southwestern South Atlantic Ocean: 6 …

Sea lions are generally considered opportunistic feeders. However, studies from different
areas suggest their diet consists mostly of four to five types of prey. Previous studies in …