The Puget Sound estuary provides one of the most valuable shellfish habitats in the Pacific Northwest, USA. Shellfish are important economically, ecologically, and socially to the Puget Sound basin. The State of Washington manages the safety of shellfish harvest areas by assessing water quality on an ongoing basis and instituting advisories and closures based on water quality thresholds. Managers currently have little information to understand the effect of these closures on harvesting effort or economic values. In order to address this important need, we recently conducted a contingent behavior survey of recreational shellfish harvesters that use Puget Sound beaches. The survey elicited the number of annual trips respondents would expect to take under alternative closure scenarios, including a baseline of no closure. We estimate the demand for recreational trips using a count model system, quantifying the economic value lost to harvesters when beaches are closed due to pollution or biotoxins
As a component of their procedure to meet aggregate greatest every day stack limitations in the Chesapeake Bay, chiefs have created supplement exchanging markets to check nitrogen and phosphorus streams into the estuarine framework. Generally, supplement exchanging programs have been confined to credits between point sources or for farming moderation advancements, for example, the planting of cover yields. In any case, the denitrification and supplement sequestration connected with shellfish reefs has as of late been a subject of much organic research. We explore the part that supplement credits for environment administrations gave by reestablished shellfish reefs can play in ideally overseeing clam reef edifices by building up a coupled bioeconomic model of clam reef development and collect. Our discoveries recommend that, alongside gather, the controlling administrations of denitrification and supplement sequestration prompt to positive net advantages in a larger part of situations broke down, albeit neighborhood ecological conditions assume an unmistakable part in a definitive results.