Estuarine Ecology and Conservation

Suisun Marsh - Photo taken by Chris Jasper

Estuaries are typically heavily impacted environments, because of the large human populations that are drawn to the resources they have provided historically. These include fisheries, hunting, safe harbors, water access, and recreation. Resulting degradations to the environment can cause wholesale alteration of the ecosystem, including loss of the original benefits. The San Francisco Estuary is an example of a novel estuarine ecosystem, with only relicts of naturalistic habitat and function remaining.

We are interested in understanding the ecological function of both pristine and novel estuarine ecosystems. We examine the effect of physical geomorphology, hydrodynamics, and landscape use on water quality, food production and aquatic invertebrates and fish. Our efforts yield insights into how restoration can provide different kinds of benefits for multiple stakeholders. We support the conservation of pristine environments, while anticipating future changes that will undoubtedly alter how these systems work. At the same time, we are interested in how novel ecosystems can be engineered to produce desirable outcomes, even when they do not resemble historical analogues.

Maven's Notebook: Bay-Delta Science Conference: Problems and promise of restoring tidal marsh to benefit native fishes

Research Programs

Estuarine Ecology and Conservation

Project
North Delta Arc of Native Fishes The Arc project is designed to study how land forms in the Sacramento-San Joaquin Delta interact with freshwater inputs and tides to create habitat favored by native fishes. The investigation focuses on regions in the North Delta where fish surveys have shown relatively high populations of native fishes - regions including Suisun Marsh, the flooded Sherman Island and the Cache and Lindsey sloughs. The areas together form an arc, inspiring the project name "North Delta Arc of Native Fishes."
Sacramento Perch Sacramento Perch Project The Sacramento perch (SP) is a native sunfish that once was abundant, but is now extirpated from almost all of its former habitats throughout the Sacramento-San Joaquin watershed.