The decline of Steller sea lions Eumetopias jubatus in the Gulf of Alaska and Aleutian
Islands between the late 1970s and 1990s may have been related to reduced availability of …

ABSTRACT 1 The western Steller sea lion Eumetopias jubatus population has experienced
a chronic decline since the 1960s. The causes are likely multifactorial and a combination of …

As the apex non-human marine predator, the killer whale Orcinus orca feeds on a wide
diversity of marine fauna. Different ecotypic forms of the species, which often exist in …

The DNA of prey present in animal scats may provide a valuable source of information for
dietary studies. We conducted a captive feeding trial to test whether prey DNA could be …

Knowing the species and life stages of prey that predators consume is important for
understanding the impacts that predation may have on prey populations, but traditional …

Ecosystem-orientated thinking is increasingly incorporated into fishery management. Given
the complexity of ecosystem processes, there is a need to evaluate the tools used to steer …

Declines of Steller sea lion (Eumetopias jubatus) populations in the Aleutian Islands and
Gulf of Alaska could be a consequence of physical oceanographic changes associated with …

Interannual and decadal-scale variability in abundance, distribution and biological
characteristics are described for important living marine resources of the Benguela Current …

Polymerase chain reaction techniques were developed and applied to identify DNA from>
40 species of prey contained in fecal (scat) soft‐part matrix collected at terrestrial sites used …

Like many endangered wildlife populations, the viability and conservation status of 'southern
resident'killer whales Orcinus orca in the north‐east Pacific may be affected by prey …