Euphausiid crustaceans, commonly known as “krill”, represent a primary foodresource for pelagic fish, seabirds and marine mammals in the California Current ecosystem
Changes in ecosystem variance of the North Pacific to provide insight into varying relationships between climate variables and ecosystem dynamics
Seabirds have been put forth as reliable ecological indicators of coupled physical-ecological change
Climate variability as a major factor influencing the California Current Ecosystem
Climate change is expected to alter the amplitude and timing of upwelling.
Pacific Region Seabird Conservation Plan update
Climate change may change the timing of annual events in species' life cycles
Understanding spatial variation in biological activities is critical to the ecosystem approach to management, especially for marine spatial planning
We developed Integrated Ecosystem Assessments (IEA) for the California Current Ecosystem (CCE)
With respect to ecosystem-based management and protection (e.g., design of marine protected areas), it is important to understand, and if possible predict, the abundance and spatial distribution of key mid trophic level prey species. Krill are an integral component of the California Current Ecosystem (CCE) that support commercially valuable as well as protected species. It has been postulated that krill have affinities for particular bathymetric and hydrographic habitats (i.e. canyons, isobaths, fronts), but it is unclear how these factors collectively influence krill aggregations. We surveyed the spatial distribution of krill using hydroacoustics in central-northern California and modeled their distribution in relation to bathymetric slope, distance from shelf break/canyon heads and fronts, phytoplankton/chl-a concentrations, and sea-surface height anomalies (eddy structures) using a Regional Ocean Modeling System (ROMS) coupled to an ecosystem model (CoSINE; Ocean Modeling Group, Santora et al. 2013), as well as an Individual-Based Model (IBM) parameterized for Euphausia pacifica (Dorman et al. 2005). The model also outputs spatially-explicit distributions and can be used to understand "hotspot" formation. This project has been supported by the NASA ROSES program and California Sea Grant.
The North Coast Program is designed to measure and assess physical, chemical, and biological oceanographic properties as well as ecosystem and food web conditions known to affect salmonid survival at sea
Reductions in forage fish fisheries worldwide are required to recover and sustain marine predator populations.
It has been recognized and widely accepted that the ocean plays a critical role in determining salmon returns and fisheries catch
Studies focus on the breeding ecology of Brandt's cormorant and western gull.
Wave energy development along Sonoma County coast.
Impacts of wave energy development on the environment and coastal communities