What do you do when one endangered species eats another?

Sea otters, once extirpated in Washington, are now recovering thanks to several transplantations from Alaska. They eat up to 25% of their body weight a day in abalone, clams, crabs, sea urchins, and other invertebrates. This is a concern, because the northern (pinto) abalone also has declined precipitously in Washington and efforts are underway to bring back this culturally and ecologically important mollusk. Complicating the issue, young abalone might hide under sea urchins for protection and Washington has a sizeable state and tribal commercial urchin harvest.

Over half a century ago, a non-native seaweed called Sargassum muticum was accidentally introduced into Washington’s inland waters with oysters imported from Asia. The seaweed invaded the entire region, and can be found in lower intertidal and shallow subtidal rocky habitats throughout Puget Sound, the Strait of Juan de Fuca and the San Juan Islands.

The SeaDoc Society is ensuring the health of marine wildlife populations and their ecosystems by funding critical research, providing scientific support and bringing stakeholders together. Thanks to the support of numerous private investors, the SeaDoc Society recently solicited and funded four new research projects to be conducted in 2004. Like the projects we have funded before, these studies are designed to provide useful information that will enable us to better manage our living marine resources. Last year, the SeaDoc Society reported that over 60 marine species in our region have declined enough to warrant their listing or proposed listing as threatened or endangered. The new research we are supporting this year is examining marine protected areas (MPAs) as a tool to help recover declining populations of wildlife like rockfish, herring, and scoters.

In addition to improving the health of marine wildlife and ecosystems by funding critical research and bringing stakeholders together, the SeaDoc Society also provides all levels of scientific support for numerous regional marine ecosystem health-related issues. A good example is our participation in the recent investigation of the potential association between the stranding of 14 harbor porpoises and the Navy’s mid-frequency sonar exercise in Haro Strait last May.

The SeaDoc Society is improving the health of marine wildlife populations and the ecosystem upon which they depend by funding critical research, providing scientific support, and bringing stakeholders together. Like many SeaDoc Society-funded research projects, a recently completed project on sea otters is providing new information that is being used to better manage living marine resources.

One way the Marine Ecosystem Health Program (MEHP [now the SeaDoc Society]) works to ensure the health of marine wildlife populations and their Pacific Northwest inland waters ecosystem is to fund scientific research. Research projects are carefully selected to ensure that each one provides information needed to better manage marine resources throughout the inland waters region. For this edition of the quarterly MEHP Research Update, we would like to highlight some early results from one of the projects the MEHP funded in 2002. This research project, entitled “What are the causes of developmental abnormalities in Cherry Point herring?” investigated some important aspects of herring declines in Puget Sound.

This has been a very busy and productive summer for the Marine Ecosystem Health Program (MEHP [now the SeaDoc Society]). Not only did we convene the First Biennial MEHP Science Symposium in September, but we also launched an exciting new wildlife health research project which we’d like to tell you a bit about. Joe is leading a long-term study of the health of river otters within the inland waters of Washington and British Columbia.