Oyster reef restoration and monitoring in Wellfleet, MA.

Funding for this project was provided by MassBays to Mass Audubon (2011)

About the project

Based on historical records from the early 1900s the populations of the Eastern Oyster (Crassostrea virginica) in Wellfleet (MA) have diminished drastically over the past 100 years. As a reef-forming keystone species which serves as refuge for a variety of marine organisms, helps reduce shoreline erosion, improves water quality through biofiltration, and plays a role in nutrient cycling in estuaries, its decline has had impacts on the overall diversity and abundance of marine life as well as the water quality in Wellfleet Harbor.

Up until an oyster reef restoration project was begun in 2008 by the Mass Audubon in partnership with the National Oceanographic and Atmospheric Administration, The Nature Conservancy, and the Town of Wellfleet, no shellfish habitat restoration projects of this kind had been undertaken in Massachusetts and Cape Cod Bays. In 2011, this three year experimental oyster restoration project in Wellfleet was completed, resulting in a population of between 60,000 to 250,000 oysters. 

2011_MassAudubon_oysters_wellfleet
Experimental Oyster Restoration in Wellfleet.

Results indicated oyster castles to be the best substrate for oyster restoration, as they maintain their structural integrity over time and showing a net increase in their oyster population each year. In addition it was noted that invertebrate abundance and diversity, as well as the incidence of shorebirds, have increased at the project site relative to control sites. American oystercatchers, a species of management concern in Massachusetts, now regularly feed on blue mussels growing at the site as a result of this project. Preliminary data indicate that several fish species, including juvenile tautog and cunner, killifish, and even squid may be preferentially using the reef relative to adjacent control areas. The results of this project have also shed some light on ways to facilitate the permitting process and a number of recommendations were developed including that the State provides protection for future shellfish restorations by creating no-harvest “spawning sanctuaries”. 

Details of the experimental process, data collected, and management recommendations are provided in the final report: Oyster Reef Restoration and Monitoring in Wellfleet, MA. Massachusetts Audubon Society. 2011

Additional Resources for About the project

Feedback

Did you find what you were looking for on this webpage? * required
We use your feedback to help us improve this site but we are not able to respond directly. Please do not include personal or contact information. If you need a response, please locate the contact information elsewhere on this page or in the footer.
We use your feedback to help us improve this site but we are not able to respond directly. Please do not include personal or contact information. If you need a response, please locate the contact information elsewhere on this page or in the footer.

If you need to report child abuse, any other kind of abuse, or need urgent assistance, please click here.

Feedback