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Effects of harmful algal blooms caused by Aureoumbra lagunensis (brown tide) on larval and juvenile life stages of the eastern oyster (Crassostrea virginica)
Title
Effects of harmful algal blooms caused by Aureoumbra lagunensis (brown tide) on larval and juvenile life stages of the eastern oyster (Crassostrea virginica).
Creator
Makris, Panagiota, Walters, Linda, Quintana-Ascencio, Pedro, Scarpa, John, University of Central Florida
Abstract / Description
Harmful algal blooms caused by the marine microalga Aureoumbra lagunensis have been associated with negative impacts on marine fauna, both vertebrate and invertebrate. Within the Indian River Lagoon (IRL) estuary system along Florida's east coast, blooms of A. lagunensis in excess of 1(&)#215;106 cells mL-1 have occurred along with higher than average salinities ((>)35 PSU) during times of peak reproduction and growth for the eastern oyster Crassostrea virginica. Field and laboratory studies...
Show moreHarmful algal blooms caused by the marine microalga Aureoumbra lagunensis have been associated with negative impacts on marine fauna, both vertebrate and invertebrate. Within the Indian River Lagoon (IRL) estuary system along Florida's east coast, blooms of A. lagunensis in excess of 1(&)#215;106 cells mL-1 have occurred along with higher than average salinities ((>)35 PSU) during times of peak reproduction and growth for the eastern oyster Crassostrea virginica. Field and laboratory studies were used to investigate the effects of A. lagunensis and high salinities on early life stages of eastern oysters, late pediveliger to early juvenile. Natural recruitment of C. virginica within Mosquito Lagoon (northern IRL) from 2013 to 2015 was negatively associated with blooms of A. lagunensis ((>)1(&)#215;105 cells mL-1) and high salinities ((>)35 PSU), but recruitment of barnacle competitors was not. Larval settlement, tested using recirculating raceway flumes, was affected both by A. lagunensis and high salinities. Additionally, survival and growth rates of juvenile C. virginica were tested following one-week laboratory exposure to A. lagunensis and subsequent transplantation to the field for four weeks. Survival of juvenile oysters was negatively correlated with A. lagunensis and time (80% survival for A. lagunensis exposure and 90% survival when exposed to Isochrysis galbana control). Our results indicated negative impacts of Aureoumbra lagunensis on larval and juvenile eastern oysters during the term of the experiment. Oyster recruitment and growth continued during and following exposure to bloom concentrations of A. lagunensis, but at reduced rates.
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Date Issued
2016
Identifier
CFE0006535, ucf:51309
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0006535
ISOLATION OF CHARACTERIZATION OF AN ENDEMIC POPULATION OF VIBRIO CHOLERAE IN THE FLORIDA INDIAN RIVER LAGOON
Title
ISOLATION OF CHARACTERIZATION OF AN ENDEMIC POPULATION OF VIBRIO CHOLERAE IN THE FLORIDA INDIAN RIVER LAGOON.
Creator
Ganan, Carolina, Almagro-Moreno, Salvador, University of Central Florida
Abstract / Description
Vibrio choleraeis the etiological agent of the severe diarrheal disease-cholera and natural inhabitant of estuarine and coastal waters. The proximity of the Florida Indian River Lagoon (IRL) to areas affected by recent cholera outbreaks makes this estuary ideal to investigate the environmental dynamics and their potential role in V. cholerae's pathogen emergence. We identified two locations in the IRL, Feller's House UCF Field Station and Shepard Park, as our collection sites. We collected...
Show moreVibrio choleraeis the etiological agent of the severe diarrheal disease-cholera and natural inhabitant of estuarine and coastal waters. The proximity of the Florida Indian River Lagoon (IRL) to areas affected by recent cholera outbreaks makes this estuary ideal to investigate the environmental dynamics and their potential role in V. cholerae's pathogen emergence. We identified two locations in the IRL, Feller's House UCF Field Station and Shepard Park, as our collection sites. We collected samples from three different fractions - water, plankton, and sediment - and recorded data for several water parameters such as pH, temperature, and, turbidity. In the laboratory, we enriched samples in alkaline peptone water and isolated V. choleraeusing widely used selective media Thiosulfate-Citrate Bile Salts-sucrose agar (TCBS) and CHROMagar Vibrio. From our study, we isolated 100 potential V. cholerae isolates, which were confirmed using biochemical tests such as oxidase and Kligler's Iron Agar. V. cholerae has allelic variations in the core genes such as ompU, which provide pre-adaptation to virulence. We investigated the allelic variations within ompU to characterize V. cholerae isolates. We elucidated the sequenced allele of ompU and built a neighboring-joining phylogeny tree to view the differentiation among vibrios. Our findings provide insight into the endemic population of V. cholerae in the Eastern Coast of Florida. Further studies include a screen for additional virulence genes and investigate the role of environmental dynamics on the distribution of V. cholerae and emergence as a human pathogen.
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Date Issued
2019
Identifier
CFH2000581, ucf:45680
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFH2000581
THE USE OF STABLE ISOTOPES TO ASSESS POTENTIAL EFFECTS OF ALGAL BLOOMS ON SEAGRASS AND MACROALGAE COMMUNITIES IN THE INDIAN RIVER LAGOON, FLORIDA
Title
THE USE OF STABLE ISOTOPES TO ASSESS POTENTIAL EFFECTS OF ALGAL BLOOMS ON SEAGRASS AND MACROALGAE COMMUNITIES IN THE INDIAN RIVER LAGOON, FLORIDA.
Creator
Azcona, Alexandra, Worthy, Graham, University of Central Florida
Abstract / Description
Algal blooms have caused significant losses in seagrass and macroalgae in the Indian River Lagoon, FL. To gain an understanding of these effects, samples of Gracilaria sp., Halodule wrightii, pinfish, and white mullet were taken throughout October and November of 2013. Samples from 2001 of Gracilaria sp., Halodule wrightii, Syringodium filiforme, Thalassia testudinum, pinfish, spotted seatrout, and white mullet were also obtained. Stable isotope data were obtained from these samples and...
Show moreAlgal blooms have caused significant losses in seagrass and macroalgae in the Indian River Lagoon, FL. To gain an understanding of these effects, samples of Gracilaria sp., Halodule wrightii, pinfish, and white mullet were taken throughout October and November of 2013. Samples from 2001 of Gracilaria sp., Halodule wrightii, Syringodium filiforme, Thalassia testudinum, pinfish, spotted seatrout, and white mullet were also obtained. Stable isotope data were obtained from these samples and compared by year and species. Halodule wrightii and pinfish had a significantly larger 2013 delta C13 values. Halodule wrightii also displayed lower total %C and total %N averages for 2013 when compared to 2001 data. These results may indicate a link between Halodule wrightii and pinfish, with pinfish consuming organisms that use Halodule wrightii as their source of nutrients. The location of collections also seemed to play a role in stable isotope values, as indicated by samples of Halodule wrightii.
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Date Issued
2014
Identifier
CFH0004552, ucf:45200
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFH0004552
Effects of biotic interactions on coastal wetland communities with applications for restoration
Title
Effects of biotic interactions on coastal wetland communities with applications for restoration.
Creator
Donnelly, Melinda, Walters, Linda, Quintana-Ascencio, Pedro, Weishampel, John, University of Central Florida
Abstract / Description
Coastal wetland plants serve as ecological engineers in a physiologically stressful environment and the loss of coastal wetlands can cause negative effects throughout the estuarine system. Due to increased degradation of coastal habitats worldwide, interest in restoration has increased around the world. An understanding of the biotic processes affecting species distribution and diversity is critical for future conservation, management, and restoration of coastal wetlands. The purpose of my...
Show moreCoastal wetland plants serve as ecological engineers in a physiologically stressful environment and the loss of coastal wetlands can cause negative effects throughout the estuarine system. Due to increased degradation of coastal habitats worldwide, interest in restoration has increased around the world. An understanding of the biotic processes affecting species distribution and diversity is critical for future conservation, management, and restoration of coastal wetlands. The purpose of my study was to test the effects of biotic interactions on native coastal wetland plants and determine how these interactions may be incorporated into current and future restoration projects. I had three primary goals for my dissertation. First, I evaluated the effectiveness of natural regeneration of coastal wetland communities following hydrological restoration. Second, I examined effects of biotic interactions between mangroves and other wetland species by experimentally testing: 1) trapping capabilities of early successional plant species on Rhizophora mangle propagules, 2) effects of pre-dispersal propagule damage on native mangrove species, 3) facilitative and competitive interactions between the plants Rhizophora mangle, Batis maritima, Sarcocornia perennis, and the fiddler crab, Uca pugilator using mesocosms. Third, I evaluated the combined effects of biotic and abiotic interactions on survival and growth of R. mangle propagules during their first year of establishment using a manipulative field experiment. Results from my study increase our knowledge of the importance of biotic interactions in coastal wetland communities, their role in early successional stages, and have direct applications to coastal wetland restoration and management.
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Date Issued
2014
Identifier
CFE0005483, ucf:50344
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0005483
INVESTIGATING THE QUANTITY AND TYPES OF MICROPLASTICS IN THE ORGANIC TISSUE OF OYSTERS AND CRABS IN THE INDIAN RIVER LAGOON
Title
INVESTIGATING THE QUANTITY AND TYPES OF MICROPLASTICS IN THE ORGANIC TISSUE OF OYSTERS AND CRABS IN THE INDIAN RIVER LAGOON.
Creator
Waite, Heidi, Walters, Linda J., University of Central Florida
Abstract / Description
Microplastics are widespread and abundant. Few studies have examined the diversity and abundance of microplastics in wild organisms. This study determined the microplastic quantity and types in the organic tissues of the eastern oyster Crassostrea virginica and Atlantic mud crab Panopeus herbstii from the Indian River Lagoon (IRL). This study also investigated whether location affected the microplastic abundance and variety. Organisms were collected from three sites across Mosquito Lagoon in...
Show moreMicroplastics are widespread and abundant. Few studies have examined the diversity and abundance of microplastics in wild organisms. This study determined the microplastic quantity and types in the organic tissues of the eastern oyster Crassostrea virginica and Atlantic mud crab Panopeus herbstii from the Indian River Lagoon (IRL). This study also investigated whether location affected the microplastic abundance and variety. Organisms were collected from three sites across Mosquito Lagoon in the northern IRL. Oysters were frozen after collection. Crabs were placed in containers for 5 days before freezing. The soft organic tissue was chemically digested using hydrogen peroxide, filtered, and examined for microplastics. Water samples collected from each study site had an average of 23.1 microplastic pieces per liter and fibers were the most common type. There was a significant interaction for microplastic type and site for both oysters and crabs (p
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Date Issued
2017
Identifier
CFH2000157, ucf:46042
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFH2000157
RECOVERY AND RESTORATION OF THE SEAGRASS HALODULE WRIGHTII AFTER BOAT PROPELLER SCAR DAMAGE IN A POLE-TROLL ZONE IN MOSQUITO LAGOON, FLORIDA
Title
RECOVERY AND RESTORATION OF THE SEAGRASS HALODULE WRIGHTII AFTER BOAT PROPELLER SCAR DAMAGE IN A POLE-TROLL ZONE IN MOSQUITO LAGOON, FLORIDA.
Creator
Grablow, Katherine, Walters, Linda, University of Central Florida
Abstract / Description
This study combined documentation of four boat propeller scar types in Halodule wrightii seagrass beds in Mosquito Lagoon, Florida with manipulative field experiments to document scar recovery times with and without restoration. Scar types ranged from the most severe scar type (Type 1) with trench formation which had no roots or shoots in the trench, to the least severe (Type 4) scars that had no depth, intact roots and shoots shorter than the surrounding canopy. For 110 measured existing...
Show moreThis study combined documentation of four boat propeller scar types in Halodule wrightii seagrass beds in Mosquito Lagoon, Florida with manipulative field experiments to document scar recovery times with and without restoration. Scar types ranged from the most severe scar type (Type 1) with trench formation which had no roots or shoots in the trench, to the least severe (Type 4) scars that had no depth, intact roots and shoots shorter than the surrounding canopy. For 110 measured existing scars, the frequency of each scar type was 56% for Type 1, 10% for Type 2, 7% for Type 3, and 27% for Type 4. In the first manipulative experiment, experimental scars were created to document the natural recovery time of H. wrightii for each scar severity within one year. Type 4 scars recovered to the control shoot density at 2 months, while Types 1, 2, and 3 scars did not fully recover in one year. Mean estimated recovery for H. wrightii is expected in 25 months for Type 1, and 19 months for Types 2 and 3. For the second manipulative experiment, three restoration methods were tested on the Type 1 scars over a 1 year period. Restoration methods included: (1) planting H. wrightii in the scar trench, (2) filling the trench with sand, and (3) filling with sand plus planting H. wrightii. There was complete mortality of all transplants at 2 months and only 25% of scars retained fill sand after 1 year. With dense adjacent seagrass beds, natural recovery was more successful than any of my restoration attempts. Thus, I suggest that managers should concentrate on preventing seagrass destruction rather than restoration.
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Date Issued
2008
Identifier
CFE0002457, ucf:47708
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0002457
QUANTIFYING THE SUCCESS OF EASTERN OYSTER PILOT REEFS IN BREVARD COUNTY, FLORIDA
Title
QUANTIFYING THE SUCCESS OF EASTERN OYSTER PILOT REEFS IN BREVARD COUNTY, FLORIDA.
Creator
Anderson, Lacie, Walters, Linda J., University of Central Florida
Abstract / Description
Crassostrea virginica, the eastern oyster, is a native keystone species that inhabits many coastal and estuarine ecosystems along the Atlantic seaboard. Introduction of the eastern oyster into estuarine areas with limited current populations is gaining popularity as a pro-active approach to improve estuarine water quality. In November 2014 and April 2015, a total of five pilot oyster reef treatments were deployed in Brevard County: bagged adult oysters (grown by community members under their...
Show moreCrassostrea virginica, the eastern oyster, is a native keystone species that inhabits many coastal and estuarine ecosystems along the Atlantic seaboard. Introduction of the eastern oyster into estuarine areas with limited current populations is gaining popularity as a pro-active approach to improve estuarine water quality. In November 2014 and April 2015, a total of five pilot oyster reef treatments were deployed in Brevard County: bagged adult oysters (grown by community members under their docks through oyster gardening) collected in fall 2014 and spring 2015, bagged clean shell, oyster restoration mats, and empty plots (control). Locations of deployment included a Merritt Island impoundment (Marsh Harbor), Nicol Park (Port St. John), and Scout Island (Melbourne Beach). Prior to deployment, we collected morphometric data (shell length, weight) on all gardened oysters. Abiotic factors including salinity, air and water temperature, and wind speed were collected monthly. During quarterly sampling at each site, morphometric data were collected for all live oysters, surviving and newly recruited. Results show survival of gardened oysters and natural recruitment differed by and depended greatly on the within-site location of each reef. In areas with no recruitment and limited gardened oyster survival, regular deployment of gardened oysters is needed for long term success. In areas with natural recruitment, bagged, clean shell or oyster restoration mats are most successful. Future restoration sites should be tested prior to any large-scale oyster deployments.
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Date Issued
2016
Identifier
CFH2000059, ucf:45557
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFH2000059
Fine-scale geographic variation of stable isotope and fatty acid signatures of three fish species in the Indian River Lagoon, FL
Title
Fine-scale geographic variation of stable isotope and fatty acid signatures of three fish species in the Indian River Lagoon, FL.
Creator
Odom, Jennifer, Worthy, Graham, Jenkins, David, Paperno, Richard, University of Central Florida
Abstract / Description
The Indian River Lagoon, Florida, is a unique closed (")bar built(") estuary system that has little interchange with the Atlantic Ocean and which is home to many resident species. Three fish species were investigated to see if their isotopic and fatty acid signatures differed based on geographic location. The goal was to assess the degree of resolution of spatial variation that is possible when using stable isotope and fatty acid signature analysis to interpret feeding habits and potential...
Show moreThe Indian River Lagoon, Florida, is a unique closed (")bar built(") estuary system that has little interchange with the Atlantic Ocean and which is home to many resident species. Three fish species were investigated to see if their isotopic and fatty acid signatures differed based on geographic location. The goal was to assess the degree of resolution of spatial variation that is possible when using stable isotope and fatty acid signature analysis to interpret feeding habits and potential linkages between feeding habits and health status. Spotted seatrout (n=40), pinfish (n=60) and white mullet (n=60) were collected over a 4 week period at sites 30 km apart in two distinct biogeographic regions of the IRL. Fish were analyzed for stable isotope (?13C and ?15N) and fatty acid composition. All three species were significantly different from each other in both isotopic and fatty acid signatures. In the North Indian River segment, spotted seatrout, white mullet and pinfish had mean values ((&)#177; SE) for ?13C of -18.00 (&)#177; 0.08, -14.59 (&)#177; 0.07 and -16.88 (&)#177; 0.04 respectively and for ?15N, mean values were 14.43 (&)#177; 0.05, 8.30 (&)#177; 0.04 and 10.43 (&)#177; 0.03 respectively. For the North-Central Indian River segment, spotted seatrout, white mullet and pinfish had mean values for ?13C of -18.98 (&)#177; 0.02, -16.25 (&)#177;0.06 and -16.94 (&)#177; 0.04 respectively and for ?15N, mean values were 14.21 (&)#177; 0.02, 8.07 (&)#177; 0.03 and 10.64 (&)#177;0.03 respectively. When species and location interactions were examined using ANCOVA, a post-hoc Tukey's HSD test showed that ?13C was significantly affected by sampling segment only for spotted seatrout and that there was no significant effect of location on ?15N values. Spotted seatrout was the only species that differed between segments for ?13C. Classification and Regression Tree (CART) analysis was then performed on the (")extended dietary fatty acids(") for each individual species and collection location. In this analysis, all three species were correctly identified to segment (white mullet - MR 2/53 p~ 0.03; spotted seatrout (MR 0/40), and pinfish (MR 0/56) indicating that individual species were exhibiting significant differences in their fatty acid signature over distances of 30 km. The ability to discern fine-scale differences in potential prey allows for the possibility of better resolution of dolphin feeding habits and hence a better understanding of both habitat utilization and health impacts. Due to limited exchange of clean salt water, contaminants can theoretically become a problem and there are indications that the health of the resident population of bottlenose dolphins (Tursiops truncatus) has been declining over recent years.
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Date Issued
2012
Identifier
CFE0004329, ucf:49434
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0004329
Florida Welcome to the Indian River Country
Title
Florida Welcome to the Indian River Country.
Date Created
1936
Identifier
DP0007870
Format
E-book
PURL
http://purl.flvc.org/ucf/fd/DP0007870
Community-based coastal restoration: long term impacts on habitats and people in Volusia County
Title
Community-based coastal restoration: long term impacts on habitats and people in Volusia County.
Creator
Wimmer, Rachel, Walters, Linda, Donnelly, Melinda, Koontz, Amanda, University of Central Florida
Abstract / Description
Coastal habitats provide invaluable economic and ecosystem services. However, coastlines are eroding at increasing rates due to anthropogenic and climate driven changes. Grey and green infrastructure solutions have been proposed to retard the decay of coastlines, with oysters serving as a popular living shoreline. Three community-based stabilizations that implemented living shorelines and engaged local communities in restoration efforts over the past decade in Volusia County were revisited to...
Show moreCoastal habitats provide invaluable economic and ecosystem services. However, coastlines are eroding at increasing rates due to anthropogenic and climate driven changes. Grey and green infrastructure solutions have been proposed to retard the decay of coastlines, with oysters serving as a popular living shoreline. Three community-based stabilizations that implemented living shorelines and engaged local communities in restoration efforts over the past decade in Volusia County were revisited to determine if they were successful and if they produced positive public perceptions of success. Chicken Island, which was restored after waves, boat wakes, tides, and adverse weather altered the natural shoreline, had significant increases in oyster size and density but an unsuccessful deployment of mangrove seedlings. The Port Orange study site installed living shoreline along existing sea wall and experienced low oyster recruitment, limited success with S. alterniflora propagation, and high cover of bare sediment. The Mosquito Lagoon Marine Enhancement Center had high vegetative cover and biodiversity and decreases in oyster density likely due to the development of healthy, mature oyster reefs. A survey of volunteers who participated in these three restoration projects was also conducted to determine if there is a tie in ecosystem function produced through restoration and community perceptions of restoration success. While there were not enough survey responses to draw conclusions, the responses were indicative of the future research needed to understand volunteer identities and sense of place as they relate to the human-nature system. To improve the long-term success of living shorelines, it is critical to not only select restoration methods appropriate for the specific location of the restoration, but to involve local communities to increase sense of self and investment in restoration efforts.
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Date Issued
2019
Identifier
CFE0007878, ucf:52781
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0007878
Indian River country & Lake Worth Florida
Title
Indian River country & Lake Worth Florida.
Creator
PALMM (Project)
Abstract / Description
An album of period photographs illustrating the flora, activities, and hotels in the area of east Florida running from Ormond to Palm Beach.
Date Issued
1896
Identifier
AAB6362QF00001/18/200509/08/200514761BfamIi D0QF, FHP C CF 2005-01-19, FCLA url 20050906xOCLC, 61452527, CF00001693, 2580695, ucf:17311
Format
E-book
PURL
http://purl.flvc.org/fcla/tc/fhp/CF00001693.jpg