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Oyster Restoration and Rehabilitation Efforts in NC Niels Lindquist - - PowerPoint PPT Presentation
Oyster Restoration and Rehabilitation Efforts in NC Niels Lindquist - - PowerPoint PPT Presentation
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
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river
- cean
inlet
Ridge et al. submitted (& recent editor rejection) L&O
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river
- cean
inlet
Ridge et al. submitted (& recent editor rejection) L&O
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1 2 3 4 5 6 7 8 9 10 5 10 15 20 25 30 35 40
Mean Station Salinity (ppt) Standard Deviation of Station Mean Salinity
NC DMF Shellfish Sanitation Station Data - 2007 to 2012 1230 stations, 30+ observations per stations
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1 2 3 4 5 6 7 8 9 10 5 10 15 20 25 30 35 40
Mean Station Salinity (ppt) Standard Deviation of Station Mean Salinity intertidal reef areas building for the future subtidal reef areas
NC DMF Shellfish Sanitation Station Data - 2007 to 2012 1230 stations, 30+ observations per stations
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Sanctuary
Mean Salinity SD Salinity Range % obs < 10 ppt % obs > 25 ppt
Ocracoke
24.5 5.6 10-38 50
Hatteras
21.7 4.8 10-35 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
Pamlico Sound Oyster Sanctuary Salinity Characteristics
~1990-2012
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2004 2006 2008 2009 2007 2012 2011 2010-s 2009
Year Planted Year Sampled
2010-f
5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20 5 10 15 20
Ocracoke
33 12 11 34 67 45 22 20 82 60 31 97 40 75 52 28
100% 100% 94% 100% 100% 89% 96% 100% 100%
# Individuals per rock
Shell Length (1-cm bins)
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~3-4 years post deployment ~5-6 years post deployment ~6+ years post deployment
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West Bluff western Pamlico Sound
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dead for oysters struggling? maintaining
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North River 2009 site North River 2010 site
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10 20 30 40
50 100 150 200
10 20 30 40 50
50 100 150 200
N=131 98% of oysters infested N=180 92% of oysters infested 2009 site – no live oysters
- r boxes larger than spat
Oyster Length (10-mm bins) Number of Individuals in each 10-mm size bin
Oyster size-frequency distributions on North River cultch plant sites.
recruitment failure?
2008 site 2006 site
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+
Standard Deviation of Station Mean Station Mean Salinity (ppt)
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 15.0 20.0 25.0 30.0 35.0
1988-2012 data X X
West Bay Cedar Is. Bay NR–Stones Bay Newport River-SW Newport River-NE Nelson Bay Jarrett Bay Sleepy Creek North River NR–Sneads Ferry S
X NR-Inlet area
Chadwick Bay Alligator Bay Everett Bay Lea Is. marshes Figure 8 Is marshes Wrightsville channels Masonboro marshes Davis Creek area Shallotte River
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5 10 15 20 25 30 35 40 23-Dec-88 15-Jun-94 06-Dec-99 28-May-05 18-Nov-10
Ocracoke
5 10 15 20 25 30 35 40 23-Dec-88 15-Jun-94 06-Dec-99 28-May-05 18-Nov-10
lower Neuse
Climate- Driven Shifts ...and Sea-Level Rise?
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Winslow 1885-1886 Shellfish Sanitation 1988-2012
New River Core Sound
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Adam Tyler David Cessna aka “Clammerhead”
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