Keystone predators can impact many prey species, including those that are endangered. In order to assess the impact predators have on different prey populations, it is essential to identify the species being consumed in different types of aquatic comm . . .

Scent-marking, the deposition of a scent-containing excretion as a means of intraspecific olfactory communication, is common among mammals. For the North American river otter (Lontra canadensis) the latrine serves as a primary area for scent-marking w . . .

This project was designed to assess if the California Native Plant Society Vegetation Monitoring Program (CNPS VMP) provides habitat data useful for predicting bird distributions. In 2004-2005, point counts for bird occurrences and relevé vegetation s . . .

Ecosystem services, such as pest control and pollination, are critical benefits of biodiversity necessary for agricultural production. Predators, including insectivorous birds and ants, can provide important biological controls in agroecosystems, boos . . .

I evaluated nesting habitat relationships of northern spotted owls (Strix occidentalis caurina) on private lands in coastal northwestern California by comparing habitat metrics (nesting, roosting, foraging, and shrub habitats, amount of core area and . . .

Anthropogenic activities in the coastal plain of the Smith River have reduced the quality and quantity of productive salmonid rearing habitat. Consequently, restoration is needed to aid in the recovery of the threatened Smith River coho salmon (Oncorh . . .

Conserving threatened and endangered species requires knowledge of species breeding productivity and the factors that cause variation in reproductive success. I summarized 13 years of reproductive data to quantify lifetime reproductive success (LRS) f . . .

Arctic geese arriving at spring stopover areas are under strict time constraints to build-up endogenous fat and nutrient stores before migrating to their northern breeding grounds. Gizzard grit facilitates the mechanical breakdown of ingested food pla . . .

The Western Snowy Plover (Charadrius alexandrinus nivosus) is a federally listed threatened species as well as a state listed “species of special concern” in California. Accurate survival estimates are required to determine the best conservation strat . . .