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Oyster Restoration in Virginia Beach

Chesapeake Bay Foundation
Chesapeake Bay Foundation

Mark W. Luckenbach presented on positive trends for oysters in Virginia from 2001-2014. Public oyster landings and aquaculture production have increased due to improved science and management. These include greater attention to reef architecture with sufficient 3D structure, enhanced growth and survival from selective breeding for aquaculture, and improved restoration and fisheries management practices. Community efforts can help restoration but understanding local recruitment patterns and the importance of reef structure is key.

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Mark W. Luckenbach Watershed Forum Mar. 14, 2016 2001 2003 2005 2007 2009 2011 2013 Year MillionsofBushels 0.1 0.2 0.3 0.4 0.5 0.6 Oyster Landings in Virginia 2001 - 2014 Public grounds Leased bottom Outline Positive trends for oysters Science and management behind these trends Implications for community-based restoration
From Hudson and Murray 2015 0 10 20 30 40 50 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Marketoysterssold(x106) In 2014: 107.1 M single oyster seed planted 39.8 M aquacultured oysters sold $17.1 M farm gate value U.S. East Coast leader in oyster aquaculture production Survival Growth Market Size Age (months) %Survival Size(mm) Late 1980s Now
A thin veneer of shells has not been sufficient to promote the development of a sustainable reef Recruitment + New shell growth < Shell loss rate Greater attention to reef architecture with sufficient 3-D structure Enhanced growth & survival; shell persistence
Metapopulation dynamics, Source-sink modelingDetailed bottom mapping From Lipcius et al. 2015. Front. Mar. Sci.From NOAA Ches. Bay Office 0 10 20 30 40 50 2007 2008 2009 2010 2011 2012 2013 2014 Market Small Spat 0 10 20 30 40 50 2007 2008 2009 2010 2011 2012 2013 2014 Better restoration Better fisheries management Harvest bar Sanctuary
Lessons for watershed groups Your efforts can make a difference This does not work everywhere Understand oyster recruitment patterns Importance of reef structure Selective breeding is for aquaculture Water quality impacts Oysters provide some water quality benefit Last seasons oyster harvest ~ 40,000 lbs. N N loading in VA from septic & WWT ~74,000,000 lbs. (oysters removed 0.05%) Land-based efforts have a much bigger impact.

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Oyster Restoration in Virginia Beach

  • 1. Mark W. Luckenbach Watershed Forum Mar. 14, 2016 2001 2003 2005 2007 2009 2011 2013 Year MillionsofBushels 0.1 0.2 0.3 0.4 0.5 0.6 Oyster Landings in Virginia 2001 - 2014 Public grounds Leased bottom Outline Positive trends for oysters Science and management behind these trends Implications for community-based restoration
  • 2. From Hudson and Murray 2015 0 10 20 30 40 50 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Marketoysterssold(x106) In 2014: 107.1 M single oyster seed planted 39.8 M aquacultured oysters sold $17.1 M farm gate value U.S. East Coast leader in oyster aquaculture production Survival Growth Market Size Age (months) %Survival Size(mm) Late 1980s Now
  • 3. A thin veneer of shells has not been sufficient to promote the development of a sustainable reef Recruitment + New shell growth < Shell loss rate Greater attention to reef architecture with sufficient 3-D structure Enhanced growth & survival; shell persistence
  • 4. Metapopulation dynamics, Source-sink modelingDetailed bottom mapping From Lipcius et al. 2015. Front. Mar. Sci.From NOAA Ches. Bay Office 0 10 20 30 40 50 2007 2008 2009 2010 2011 2012 2013 2014 Market Small Spat 0 10 20 30 40 50 2007 2008 2009 2010 2011 2012 2013 2014 Better restoration Better fisheries management Harvest bar Sanctuary
  • 5. Lessons for watershed groups Your efforts can make a difference This does not work everywhere Understand oyster recruitment patterns Importance of reef structure Selective breeding is for aquaculture Water quality impacts Oysters provide some water quality benefit Last seasons oyster harvest ~ 40,000 lbs. N N loading in VA from septic & WWT ~74,000,000 lbs. (oysters removed 0.05%) Land-based efforts have a much bigger impact.