Connections Between Salinity/Tidal Regimes and Oyster Restoration and Rehabilitation Efforts in NC Niels Lindquist UNC Chapel Hill Institute of Marine Sciences
Grave Coker Winslow Required reading!
river Ridge et al. submitted inlet (& recent editor rejection) L&O ocean
river Ridge et al. submitted inlet (& recent editor rejection) L&O ocean
NC DMF Shellfish Sanitation Station Data - 2007 to 2012 1230 stations, 30+ observations per stations 10 9 Standard Deviation of Station Mean Salinity 8 7 6 5 4 3 2 1 0 0 5 10 15 20 25 30 35 40 Mean Station Salinity (ppt)
NC DMF Shellfish Sanitation Station Data - 2007 to 2012 1230 stations, 30+ observations per stations subtidal reef areas 10 9 Standard Deviation of Station Mean Salinity 8 7 6 5 4 3 2 1 0 0 5 10 15 20 25 30 35 40 Mean Station Salinity (ppt) building for intertidal reef areas the future
Pamlico Sound Oyster Sanctuary Salinity Characteristics ~1990-2012 Mean Salinity % obs < % obs > Sanctuary Salinity SD Range 10 ppt 25 ppt Ocracoke 24.5 5.6 10-38 0 50 Hatteras 21.7 4.8 10-35 0 31 West Bay 17.6 6.2 2-37 10 12 West Bluff 17.2 5.5 0-30 5 9 Gibb Shoal 16.9 5.1 0-30 6 7 Crab Hole 14.4 5.4 0-30 14 5 Middle Bay 14.1 4.8 1-31 17 1 Deep Bay 13.4 5.9 0-28 27 4 Neuse River 12.2 5.5 0-37 30 1 Croatan Sound 11.1 5.8 0-28 40 2
Year Planted Ocracoke 2008 2009 2004 2006 20 20 12 33 2007 15 15 10 10 5 5 0 0 0 5 10 15 20 0 5 10 15 20 20 20 34 11 2009 15 15 10 10 # Individuals per rock 5 5 Year Sampled 0 0 0 5 10 15 20 0 5 10 15 20 20 20 20 22 67 45 2010-s 15 15 15 10 10 10 5 5 5 0 0 0 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 20 20 20 20 52 28 75 20 2010-f 15 15 15 15 100% 96% 100% 100% 10 10 10 10 5 5 5 5 0 0 0 0 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 20 20 20 82 60 31 15 15 15 2011 100% 94% 100% 10 10 10 5 5 5 0 0 0 0 5 10 15 20 0 5 10 15 20 0 5 10 15 20 20 20 97 40 2012 15 15 Shell Length (1-cm bins) 89% 100% 10 10 5 5 0 0 0 5 10 15 20 0 5 10 15 20
~3-4 years post deployment ~6+ years post deployment ~5-6 years post deployment
West Bluff western Pamlico Sound
dead for oysters struggling? maintaining
North River 2010 site North River 2009 site
Oyster size-frequency 2009 site – no live oysters distributions on North or boxes larger than spat River cultch plant sites. Number of Individuals in each 10-mm size bin 50 2008 site 40 N=180 30 20 92% of oysters infested recruitment failure? 10 0 0 50 100 150 200 40 2006 site 30 N=131 20 98% of oysters infested 10 0 0 50 100 150 200 Oyster Length (10-mm bins )
1988-2012 data Standard Deviation of Station Mean 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 15.0 20.0 25.0 30.0 35.0 Station Mean Salinity (ppt) X NR-Inlet area Figure 8 Is marshes West Bay North River X Wrightsville channels Cedar Is. Bay Newport River-NE Chadwick Bay X Nelson Bay Alligator Bay Masonboro marshes Newport River-SW Davis Creek area Jarrett Bay NR – Stones Bay Everett Bay + NR – Sneads Ferry S Lea Is. marshes Shallotte River Sleepy Creek
40 lower Neuse 35 30 25 20 Climate- 15 Driven 10 Shifts 5 0 ...and 23-Dec-88 15-Jun-94 06-Dec-99 28-May-05 18-Nov-10 Sea-Level 40 Rise? 35 30 25 20 15 10 Ocracoke 5 0 23-Dec-88 15-Jun-94 06-Dec-99 28-May-05 18-Nov-10
Core Sound New River Winslow 1885-1886 Shellfish Sanitation 1988-2012
David Cessna a ka “ Clammerhead ” Adam Tyler
Acknowledgements UNC Institute of Marine Sciences NC Division of Marine Fisheries Joel Fodrie Craig Hardy Tony Rodriguez Pelle Holmlund Steve Fegley Clay Caroon Abigail Poray Mike Jordan Justin Ridge Gretchen Lauriat Sara Coleman Jer Hardin Chris Baillie NC Commercial Fishermen Alexia Pool Adam Tyler Nate Geraldi David “ Clammerhead ” Cessna Glenn Safrit Joe Purifoy UNC Undergraduates Stacy Davis Amanda Karam Eamon Kromka Carmen Kuan Alex Hodges NCDENR-DMF Shellfish Sanitation Andrea Hale Patti Fowler NCCR/NERRS Shannon Jenkins John Fear NCSU University of Miami David Eggleston Patrick Nichols (undergrad) Robert Dunn University of North Florida Katie Chellemi (undergrad)
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