An Ecosystem Approach to Investigate Direct and Indirect Effects of Geoduck Aquaculture Expansion in Washington State
Researchers will explore the ecosystem-level consequences of the recent geoduck aquaculture expansion with goals to improve the sustainability and successful management of operations in Puget Sound.
Community and Multitrophic Implications of Structure Additions Associated with Intertidal Geoduck Aquaculture
Sea Grant National Strategic Investment funds enabled university researchers to use traditional food-habit measuring techniques, chemical analyses, and energetic models to examine the effects of geoduck aquaculture operations on trophic relationships in Puget Sound.
As part of the Geoduck Aquaculture Research Program, researchers discovered previously unreported geoduck pathogens, seasonal and geographic factors influencing them, and molecular diagnostic tools to screen for disease.
In 2013, the Washington State Legislature directed and funded WSG to initiate a shellfish aquaculture research program. The purpose of the program is to assess possible negative and positive effects, including cumulative and economic impacts, of evolving Washington shellfish aquaculture practices.
Examining five ecologically and economically important bivalves, researchers found these species exhibit different susceptibility to increasing CO2 levels. Under the conditions tested, clams were relative winners and oysters losers.
Geochemical and Ecological Consequences of Disturbances Associated with Geoduck Aquaculture Operations in Washington
Washington Sea Grant-funded research found significant but transient effects from geoduck aquaculture on mobile marine animals and no significant effects on benthic communities.
In 2007, the Washington Legislature enacted Second Substitute House Bill 2220 (Chapter 216, Laws of 2007) to commission studies assessing possible effects of geoduck aquaculture on the Puget Sound and Strait of Juan de Fuca environments. The bill called on WSG to establish a six-year research program, reporting the results back to the Legislature by December 1, 2013.
Researchers documented environmental effects of geoduck aquaculture on eelgrass meadows and associated soft-sediment habitat as part of the Geoduck Aquaculture Research Program.
Toward Sustainable Geoduck Aquaculture Management in Puget Sound: Assessing Policy and Social Dimensions
Researchers are analyzing geoduck aquaculture policies and the associated stakeholder interests to answer concerns regarding the recent aquaculture expansion.