Potential Fisheries Impact of Ballast Water Uptake from Liquefied Nautral Gas Vessels at the Southern LNG EL Paso, Elba Island Facility in Savannah, Georgia

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Hdl Handle:
http://hdl.handle.net/11286/601338
Title:
Potential Fisheries Impact of Ballast Water Uptake from Liquefied Nautral Gas Vessels at the Southern LNG EL Paso, Elba Island Facility in Savannah, Georgia
Authors:
Thompson, Randi Tyler
Other Titles:
Randi Tyler Greer Thompson
Abstract:
Southern Liquefied Natural Gas (SLNG) vessels offload their cargo of liquefied natural gas (LNG) at the SLNG-El Paso, Elba Island Facility in Savannah, Georgia. The vessels are required to withdraw 11.3 to 25.6 millions of gallons of Savannah River water as ballast at the SLNG-El Paso berthing slip prior to leaving port to maintain vessel stability. The purpose of this study was to determine if cumulative water uptake would have any impacts on local fisheries by removing fish, crab, or shrimp eggs, larvae, and/or juvenile stages from the river. Ballast water uptake was simulated on site at the Elba Island facility and entrained organisms were collected using a 200 μm mesh plankton net. Taxa were identified and analyzed for seasonal, tidal, and night/day differences. Seasonal and tidal phase differences were tested with a nonparametric Kruskal-Wallis One-Way ANOVA on Ranks, and all pairwise multiple comparisons were made using Dunn’s Method. T-tests were performed for night and day data. Nine taxa of fish and nine invertebrate taxa were collected, but only three of these were somewhat commercially important and none were endangered or threatened. Fiddler crabs (n = 6,797) and mysids (n = 5,659) were the most abundant species in samples. Seasonal differences in abundance were the most common differences observed in this study with warmer months in having more organisms entrained. Crab larvae were also commonly more abundant at night. The LNG carriers could reduce fiddler crab entrainment by 96% and mud crab entrainment by 92% by avoiding night ballasting during summer months July-September. Fish entrainment could be reduced if ballasting was minimized to the maximum extent possible from February to May.
Affiliation:
Department of Marine Sciences
Issue Date:
May-2011
URI:
http://hdl.handle.net/11286/601338
Type:
Thesis
Language:
en_US
Appears in Collections:
Graduate Student Theses; Department of Marine and Environmental Science

Full metadata record

DC FieldValue Language
dc.contributor.authorThompson, Randi Tyleren
dc.date.accessioned2016-03-15T13:22:11Zen
dc.date.available2016-03-15T13:22:11Zen
dc.date.issued2011-05en
dc.identifier.urihttp://hdl.handle.net/11286/601338en
dc.description.abstractSouthern Liquefied Natural Gas (SLNG) vessels offload their cargo of liquefied natural gas (LNG) at the SLNG-El Paso, Elba Island Facility in Savannah, Georgia. The vessels are required to withdraw 11.3 to 25.6 millions of gallons of Savannah River water as ballast at the SLNG-El Paso berthing slip prior to leaving port to maintain vessel stability. The purpose of this study was to determine if cumulative water uptake would have any impacts on local fisheries by removing fish, crab, or shrimp eggs, larvae, and/or juvenile stages from the river. Ballast water uptake was simulated on site at the Elba Island facility and entrained organisms were collected using a 200 μm mesh plankton net. Taxa were identified and analyzed for seasonal, tidal, and night/day differences. Seasonal and tidal phase differences were tested with a nonparametric Kruskal-Wallis One-Way ANOVA on Ranks, and all pairwise multiple comparisons were made using Dunn’s Method. T-tests were performed for night and day data. Nine taxa of fish and nine invertebrate taxa were collected, but only three of these were somewhat commercially important and none were endangered or threatened. Fiddler crabs (n = 6,797) and mysids (n = 5,659) were the most abundant species in samples. Seasonal differences in abundance were the most common differences observed in this study with warmer months in having more organisms entrained. Crab larvae were also commonly more abundant at night. The LNG carriers could reduce fiddler crab entrainment by 96% and mud crab entrainment by 92% by avoiding night ballasting during summer months July-September. Fish entrainment could be reduced if ballasting was minimized to the maximum extent possible from February to May.en
dc.language.isoen_USen
dc.subjectFisheriesen
dc.subjectBallast Wateren
dc.subjectEcological Impacten
dc.subjectElba Islanden
dc.subjectSavannah Riveren
dc.subjectDischarge of ballast wateren
dc.subjectEcological Disturbancesen
dc.subjectEnvironmental Impact Analysisen
dc.titlePotential Fisheries Impact of Ballast Water Uptake from Liquefied Nautral Gas Vessels at the Southern LNG EL Paso, Elba Island Facility in Savannah, Georgiaen_US
dc.title.alternativeRandi Tyler Greer Thompsonen
dc.typeThesisen
dc.contributor.departmentDepartment of Marine Sciencesen
dc.contributor.committeememberGilligan, Matt; King, Jeff; Pride, Carolen
dc.description.degreeMaster of Science in Marine Sciencesen
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