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Title: A coupled hydrodynamic modeling system for PHAILIN cyclone in the Bay of Bengal.
Creator: Jose, Felix, Murty, P.L.N., Sandhya, K.G., Bhaskaran, Prasad, Gayathri, Reghu, "Balakrishnan Nair, Thayannur Mullachery ", Kumar, T. Srinivasa, Shenoi, S.S.C.
Abstract / Description: East coast of India is characterized by low to medium topography and an extensive network of major estuaries, bays, mangrove creeks, rivers and tidal inlets that permit inland flooding during tropical cyclones. A coupled wave + surge hydrodynamic modeling system (ADCIRC + SWAN) is implemented to simulate storm surge, still water level elevation and wave induced setup associated with ‘Phailin’, a very severe cyclonic storm that made landfall in the Odisha State, east coast of India, during...
Show moreEast coast of India is characterized by low to medium topography and an extensive network of major estuaries, bays, mangrove creeks, rivers and tidal inlets that permit inland flooding during tropical cyclones. A coupled wave + surge hydrodynamic modeling system (ADCIRC + SWAN) is implemented to simulate storm surge, still water level elevation and wave induced setup associated with ‘Phailin’, a very severe cyclonic storm that made landfall in the Odisha State, east coast of India, during October, 2013. The coupled model provides a realistic description on the dynamic interaction of tides, wind, waves and currents, which is critical for operational needs. The study assesses the role of wave-induced setup on the net water level elevation using time varying wave radiation stress that is dynamically updated in the coupled model run. Numerical experiments are carried out for both storm surge alone and coupled mode versions. Dependent upon complex bathymetry and coastal geometry, inclusion of wave-induced setup in coupled runs results in an additional 23–36% increase of peak surge relative to an uncoupled, surge-tide simulation. The significant wave height from coupled model also shows an excellent match with observed wave heights from a wave-rider buoy located off the Odisha coast. The comparison of surge residuals between model and observation also exhibits a good match. The study highlights the importance of having a coupled wave-hydrodynamic model for operational needs in the north Indian Ocean.
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Date Issued: 2014-11-01
Identifier: fgcu_ir_000946
Format: Citation

Title: A multivariate assessment of the coral ecosystem health of two embayments on the lee of the island of Hawai‘i.
Creator: Parsons, Michael, Walsh, William J., Settlemier, Chelsie J., White, Darla J., Ballauer, Josh M., Ayotte, Paula M., Osada, Kara M., Carman, Brent
Abstract / Description: Four coral-dominated coastal sites within two embayments (Kealakekua Bay and Honokōhau Bay) on the lee of the island of Hawai‘i were studied to assess evidence of anthropogenic impacts in these relatively pristine locales. Nutrient-loading parameters were analyzed in relation to benthic composition data. Statistically, there were significant positive relationships between nitrate + nitrite, silicate, and ammonium with the abundance of macroalgae, coralline algae, and dead coral, and between...
Show moreFour coral-dominated coastal sites within two embayments (Kealakekua Bay and Honokōhau Bay) on the lee of the island of Hawai‘i were studied to assess evidence of anthropogenic impacts in these relatively pristine locales. Nutrient-loading parameters were analyzed in relation to benthic composition data. Statistically, there were significant positive relationships between nitrate + nitrite, silicate, and ammonium with the abundance of macroalgae, coralline algae, and dead coral, and between δ15N and dead coral abundance. The north outside site of Kealakekua Bay and the south outside site of Honokōhau Bay appear to be most impacted by nutrient-loading factors in each bay, respectively. Comparisons with past nutrient data indicate that nutrient inputs have increased to the two bays, and that early impacts of these increased loadings are evident. It is predicted that at current nutrient-loading rates, the north sites of Kealakekua Bay and the south sites of Honokōhau Bay will exhibit evidence of further degradation in future years.
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Date Issued: 2008-06-01
Identifier: fgcu_ir_001035
Format: Citation

Title: A Probabilistic Risk Assessment of the Effects of Methylmercury on Great Egrets and Bald Eagles Foraging at a Constructed Wetland in South Florida Relative to the Everglades.
Creator: Rumbold, Darren
Abstract / Description: This case study summarizes an assessment of risk of methylmercury (MeHg) exposure to fish–eating birds foraging at Stormwater Treatment Area–2 (STA–2). This assessment was required as a special condition for a permit modification authorizing flow–through operation of STA–2 Cell 1 without it first satisfying formal mercury start–up criteria. The assessment estimates the risks posed by MeHg to the great egret (Ardea albus) and the bald eagle (Haliaeetus leucocephalus). Exposure models were...
Show moreThis case study summarizes an assessment of risk of methylmercury (MeHg) exposure to fish–eating birds foraging at Stormwater Treatment Area–2 (STA–2). This assessment was required as a special condition for a permit modification authorizing flow–through operation of STA–2 Cell 1 without it first satisfying formal mercury start–up criteria. The assessment estimates the risks posed by MeHg to the great egret (Ardea albus) and the bald eagle (Haliaeetus leucocephalus). Exposure models were based on literature–derived life history parameters combined with site–specific MeHg concentrations in water, sediment, and fish. To assess risk, daily MeHg intake by females and cumulative MeHg consumed by nestlings were compared to literature–derived effects thresholds. The results indicated the likelihood was low that MeHg exposures to birds foraging throughout STA–2 would exceed effects thresholds at the time of this assessment. Birds foraging exclusively from Cell 1 or the small discharge canal were predicted to experience greater exposures and could be at potential risk. However, this worst–case risk was comparable or lower than risk levels encountered in nearby water conservation areas or the Everglades National Park.
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Date Issued: 2007-01-18
Identifier: fgcu_ir_001059
Format: Citation

Title: A Rising Tide.
Creator: Nation, Molly, Feldman, Allan, Wang, Ping
Abstract / Description: The article discusses the need for students to have a clear understanding of climate change and how it affects the Earth. Topics covered include the increasing concentration of atmospheric greenhouse gases, placed-based education, and the sea-level increase as a significant problem for people living near the coasts..
Date Issued: 2015-09-01
Identifier: fgcu_ir_000987
Format: Citation

Title: A survey of epiphytic dinoflagellates from the coastal waters of the island of Hawai‘i.
Creator: Parsons, Michael, Preskitt, Linda B.
Abstract / Description: Three hundred and sixty-nine macroalgal and non-algal samples were collected from six coastal sites around the island of Hawai‘i on a biweekly basis over a 1-year period to ascertain (1) the presence of potentially toxigenic benthic dinoflagellates, and (2) substrate and environmental preferences of the dinoflagellates. Twenty-six genera/species of dinoflagellates were encountered including the (potentially) toxigenic species Amphidinium sp., Coolia monotis, Gambierdiscus sp., Ostreopsis...
Show moreThree hundred and sixty-nine macroalgal and non-algal samples were collected from six coastal sites around the island of Hawai‘i on a biweekly basis over a 1-year period to ascertain (1) the presence of potentially toxigenic benthic dinoflagellates, and (2) substrate and environmental preferences of the dinoflagellates. Twenty-six genera/species of dinoflagellates were encountered including the (potentially) toxigenic species Amphidinium sp., Coolia monotis, Gambierdiscus sp., Ostreopsis ovata, Prorocentrum concavum, Prorocentrum hoffmannianum, Prorocentrum lima, and Prorocentrum mexicanum. Twenty of the species are being reported for the first time as present in Hawaiian coastal waters. There was some evidence of macroalgal host preference (e.g., C. monotis on Tolypiocladia glomerulata), although host morphology preferences was greater (e.g., Gambierdiscus sp., and P. lima on filamentous turfs; O. sp. 1 on sheet-like macroblades). While some dinoflagellate groups were significantly correlated with nutrient concentrations (e.g., total dinoflagellates with nitrate + nitrite and phosphate concentrations), others were not (e.g., Gambierdiscus sp., Prorocentrum emarginatum, P. lima, and Sinophysis microcephalus). The presence of several potentially toxigenic dinoflagellate species in Hawai‘i merits future study on possible impacts of these dinoflagellates on coastal food webs and human health.
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Date Issued: 2007-10-01
Identifier: fgcu_ir_001036
Format: Citation

Title: Acute response of the estuarine crab Eurypanopeus depressus to salinity and desiccation stress.
Creator: Tolley, Gregory, Van Horn, Julie
Abstract / Description: Hemolymph osmolality changes following exposure to abrupt salinity change in the range of 5–40 ppt (T 5 26uC, full air saturation) and upon exposure to air (T 5 23uC, r.h. 5 30%) were investigated in the flatback mud crab Eurypanopeus depressus (Smith, 1869), a dominant species on oyster reefs in Southwest Florida. During salinity trials, hemolymph osmolality of E. depressus ranged from 751 6 123 mOsmol kg21 at 5 ppt (214 6 32 mOsmol kg21) to 1188 6 81 mOsmol kg21 at 40 ppt (1188 6 29 mOsmol...
Show moreHemolymph osmolality changes following exposure to abrupt salinity change in the range of 5–40 ppt (T 5 26uC, full air saturation) and upon exposure to air (T 5 23uC, r.h. 5 30%) were investigated in the flatback mud crab Eurypanopeus depressus (Smith, 1869), a dominant species on oyster reefs in Southwest Florida. During salinity trials, hemolymph osmolality of E. depressus ranged from 751 6 123 mOsmol kg21 at 5 ppt (214 6 32 mOsmol kg21) to 1188 6 81 mOsmol kg21 at 40 ppt (1188 6 29 mOsmol kg21). In the salinity range of 5–15 ppt E. depressus exhibited a hyperosmotic pattern of osmoregulation while at 30 and 40 ppt it conformed. In all cases stable hemolymph osmotic concentration was reached in less than 24 h. During desiccation trials, hemolymph osmolality of E. depressus ranged from 971 6 121 mOsmol kg21 for unexposed crabs to 1132 6 169 mOsmol kg21 after 90 min of exposure. The information obtained from this study adds to knowledge of crustacean stress physiology and may give a clearer picture of the important factors involved in population distribution and the consequences of multiple stressors that may affect the crabs or their oyster-reef habitat.
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Date Issued: 2009-10-01
Identifier: fgcu_ir_000976
Format: Citation

Title: Aggregate settling velocity of combined sewage overflow.
Creator: Fugate, David, Chant, Robert J.
Abstract / Description: In order to better model the fate and transport of material in a combined sewer overflow (CSO), hydrologic and geochemical measurements were made during a storm event in Flushing Bay, NY, USA. Particle size, total suspended solids concentrations, and CSO solid density are used to calculate the settling velocity of aggregates of the CSO material. Roughly half of the material that is discharged from the outfall sinks rapidly to the bottom, while the other half forms a turbid surface plume in...
Show moreIn order to better model the fate and transport of material in a combined sewer overflow (CSO), hydrologic and geochemical measurements were made during a storm event in Flushing Bay, NY, USA. Particle size, total suspended solids concentrations, and CSO solid density are used to calculate the settling velocity of aggregates of the CSO material. Roughly half of the material that is discharged from the outfall sinks rapidly to the bottom, while the other half forms a turbid surface plume in fresher water. The dry solid density of the CSO material was 1589 kg m−3 and the volume fraction of solid material to total aggregate volume ranged from 0.1 to 1.0. The settling velocity estimates of aggregated material in the surface plume ranged from about 0.5 to 9.0 mm s−1 with a median settling velocity of 2.9 mm s−1. A strong inverse relationship between the size of the aggregates and the aggregate density resulted in a fractal dimension of the aggregates of 2.3.
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Date Issued: 2006-04-01
Identifier: fgcu_ir_000993
Format: Citation

Title: American Green Caviar: Analysis of sea grape algae (Caulerpa racemosa var. peltata) for bio-filtration and valuable co-production.
Creator: Gamel, Matt, College of Arts & Sciences
Abstract / Description: Rising global demand for seafood and declining catches have resulted in the volume of mariculture doubling each decade. The FAO (Food and Agriculture Organization of the United Nations) expects such a growth to persist in the years to come. This exponential growth has created a subsequent need to find alternative solutions to wastewater generation. The use of marine algae as bio-filters for aquaculture wastewater treatment has been shown to be an efficient and cost effective strategy. For...
Show moreRising global demand for seafood and declining catches have resulted in the volume of mariculture doubling each decade. The FAO (Food and Agriculture Organization of the United Nations) expects such a growth to persist in the years to come. This exponential growth has created a subsequent need to find alternative solutions to wastewater generation. The use of marine algae as bio-filters for aquaculture wastewater treatment has been shown to be an efficient and cost effective strategy. For this study, I selected Caulerpa racemosa (commonly known as sea grape algae) as a potential bio-filtration candidate for the mitigation of aquaculture effluent. Sea grapes are highly valued in Asian and South-Pacific cuisine, where they are referred to as green caviar. They are also high in omega-3 fatty acids and antioxidants, representing a possible new marketing angle as a “super food.” This alga has been largely excluded from western markets, as the Pacific varieties are known invasives in the Atlantic basin. For this reason, I decided to utilize the native Floridian variety, which is poorly researched, despite being present throughout the Caribbean and parts of South America. For my study, I conducted laboratory growth trials to determine optimal conditions for both irradiance and nutrient concentrations. Floridian C. racemosa was found to be highly adaptable to a wide range of irradiance and nutrient regimes, with nutrient uptake efficiency greater than 90%. A clear set of optimal parameters could not be defined, however, as the treatment results were not significantly different. This finding demonstrates the high adaptability and resilience of this species. For the final trials, I constructed a 1500-L outdoor recirculating aquaculture system, raising juvenile pinfish (Lagodon rhomboides). The setup was designed to serve as a proof of concept, to test how good C. racemosa performed outside of the laboratory. The study produced mixed results, but found that a 4:1 fish to seaweed wet weight ratio was ideal in maintaining stable nutrient levels. Overall, the results designate C. racemosa as a strong candidate for commercial bio-filtration, and as a possible cash crop for the domestic sushi and algal supplement industries.
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Date Issued: 2017
Identifier: Gamel_fgcu_1743_10258
Format: Document (PDF)

Title: Analysis of Copper Concentration in Naples Bay Oysters and its Effect on Spat Recruitment.
Creator: Davidson, Jordan, STEM Undergraduate Research Symposium
Abstract / Description: Over the past year, Dr. James Douglass, myself, and other students in the Benthic Ecology lab have assisted in a study of the ongoing Naples Bay oyster restoration project. Oysters collected from the restoration and reference sites were shucked, dried, and ground into a powder for analysis of copper concentration using an X-Ray Fluorescence Spectrometer. In addition, stringers with oyster shells were placed at the sites and were checked monthly for spat (baby oyster) recruitment. Oyster reefs...
Show moreOver the past year, Dr. James Douglass, myself, and other students in the Benthic Ecology lab have assisted in a study of the ongoing Naples Bay oyster restoration project. Oysters collected from the restoration and reference sites were shucked, dried, and ground into a powder for analysis of copper concentration using an X-Ray Fluorescence Spectrometer. In addition, stringers with oyster shells were placed at the sites and were checked monthly for spat (baby oyster) recruitment. Oyster reefs perform important ecosystem functions, as a biogenic structure that provides nursery habitat to young fish and crustaceans, and as a filter feeder that can keep particulates and suspended sediments out of the water column. Copper enters Naples Bay through freshwater runoff via the Golden Gate Canal system, a watershed where copper sulfate is applied as an algaecide to canals, ponds, and golf course hazards. This study aimed to better understand how copper affects oysters and spat recruitment in Naples Bay.
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Date Issued: 2020-12-04
Identifier: fgcu_UGR_0147
Format: Document (PDF)

Title: Application of enhanced gas chromatography/triple quadrupole mass spectrometry for monitoring petroleum weathering and forensic source fingerprinting in samples impacted by the Deepwater Horizon oil spill.
Creator: Adhikari, Puspa, Wong, Roberto L., Overton, Edward B.
Abstract / Description: Accurate characterization of petroleum hydrocarbons in complex and weathered oil residues is analytically challenging. This is primarily due to chemical compositional complexity of both the oil residues and environmental matrices, and the lack of instrumental selectivity due to co-elution of interferences with the target analytes. To overcome these analytical selectivity issues, we used an enhanced resolution gas chromatography coupled with triple quadrupole mass spectrometry in Multiple...
Show moreAccurate characterization of petroleum hydrocarbons in complex and weathered oil residues is analytically challenging. This is primarily due to chemical compositional complexity of both the oil residues and environmental matrices, and the lack of instrumental selectivity due to co-elution of interferences with the target analytes. To overcome these analytical selectivity issues, we used an enhanced resolution gas chromatography coupled with triple quadrupole mass spectrometry in Multiple Reaction Monitoring (MRM) mode (GC/MS/MS-MRM) to eliminate interferences within the ion chromatograms of target analytes found in environmental samples. This new GC/MS/MS-MRM method was developed and used for forensic fingerprinting of deep-water and marsh sediment samples containing oily residues from the Deepwater Horizon oil spill. The results showed that the GC/MS/MS-MRM method increases selectivity, eliminates interferences, and provides more accurate quantitation and characterization of trace levels of alkyl-PAHs and biomarker compounds, from weathered oil residues in complex sample matrices. The higher selectivity of the new method, even at low detection limits, provides greater insights on isomer and homolog compositional patterns and the extent of oil weathering under various environmental conditions. The method also provides flat chromatographic baselines for accurate and unambiguous calculation of petroleum forensic biomarker compound ratios. Thus, this GC/MS/MS-MRM method can be a reliable analytical strategy for more accurate and selective trace level analyses in petroleum forensic studies, and for tacking continuous weathering of oil residues.
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Date Issued: 2017-10-01
Identifier: fgcu_ir_000909
Format: Citation

Title: ASSESSMENT OF EDUCATOR’S PERCEPTIONS OF THEIR NEEDS TO BEST SUPPORT ENVIRONMENTAL EDUCATION IN THE SOUTHWEST FLORIDA COMMUNITY.
Creator: Rolfe, Allison Elizabeth, College of Arts & Sciences
Abstract / Description: According to the President's Council of Advisors on Science and Technology (2010), the demand for STEM-educated teachers in the United States is increasing. With limited time and space in the general classroom setting, Environmental Education (EE) is becoming increasingly more important to the education system. The Environmental Education Alliance of Southwest Florida (EE Alliance) is a community of practice that relies on participation of local experts to create successful environmental...
Show moreAccording to the President's Council of Advisors on Science and Technology (2010), the demand for STEM-educated teachers in the United States is increasing. With limited time and space in the general classroom setting, Environmental Education (EE) is becoming increasingly more important to the education system. The Environmental Education Alliance of Southwest Florida (EE Alliance) is a community of practice that relies on participation of local experts to create successful environmental education programs. This study identifies the needs of environmental education in Southwest Florida through the EE Alliance by eliciting the perspectives of local EE professionals. A survey was sent to a total of 219 participants of the EE Alliance listserv; 50 responses were received. This study collects quantitative data from Likerttype survey response as well as qualitative data obtained from open response comments sections. The study identifies the perceived needs of material resources (resources that can be bought with funding), human resources (the knowledge, amount, and adequacy of staff), and social resources (the ability to create partnerships, relationships, and professional development opportunities) in order to run successful environmental education programs.
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Date Issued: 2017
Identifier: Rolfe_fgcu_1743_10265
Format: Document (PDF)

Title: Biodiversity mediates top–down control in eelgrass ecosystems: a global comparative‐experimental approach.
Creator: Douglass, James, Duffy, J. Emmett, Reynolds, Pamela L., Boström, Christoffer, Coyer, James A., Cusson, Mathieu, Donadi, Serena, Eklöf, Johan, Engelen, Aschwin H., Klemens...
Show moreDouglass, James, Duffy, J. Emmett, Reynolds, Pamela L., Boström, Christoffer, Coyer, James A., Cusson, Mathieu, Donadi, Serena, Eklöf, Johan, Engelen, Aschwin H., Klemens Eriksson, Britas, Fredriksen, Stein, Gamfeldt, Lars, Gustafsson, Camilla, Hoarau, Galice, Hori, Masakazu, Hovel, Kevin, Iken, Katrin, Lefcheck, Jonathan S., Moksnes, Per-Olav
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Abstract / Description: Nutrient pollution and reduced grazing each can stimulate algal blooms as shown by numerous experiments. But because experiments rarely incorporate natural variation in environmental factors and biodiversity, conditions determining the relative strength of bottom–up and top–down forcing remain unresolved. We factorially added nutrients and reduced grazing at 15 sites across the range of the marine foundation species eelgrass (Zostera marina ) to quantify how top–down and bottom–up control...
Show moreNutrient pollution and reduced grazing each can stimulate algal blooms as shown by numerous experiments. But because experiments rarely incorporate natural variation in environmental factors and biodiversity, conditions determining the relative strength of bottom–up and top–down forcing remain unresolved. We factorially added nutrients and reduced grazing at 15 sites across the range of the marine foundation species eelgrass (Zostera marina ) to quantify how top–down and bottom–up control interact with natural gradients in biodiversity and environmental forcing. Experiments confirmed modest top–down control of algae, whereas fertilisation had no general effect. Unexpectedly, grazer and algal biomass were better predicted by cross‐site variation in grazer and eelgrass diversity than by global environmental gradients. Moreover, these large‐scale patterns corresponded strikingly with prior small‐scale experiments. Our results link global and local evidence that biodiversity and top–down control strongly influence functioning of threatened seagrass ecosystems, and suggest that biodiversity is comparably important to global change stressors.
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Date Issued: 2015-05-17
Identifier: fgcu_ir_000922
Format: Citation

Title: Biomagnification of mercury through a subtropical coastal food web off Southwest Florida.
Creator: Rumbold, Darren, Thera, Jennifer C.
Abstract / Description: Total mercury and stable isotopes of nitrogen (δ15N) were measured in samples from 57 species of invertebrates (17 species) and finfish (40 species) from the coastal waters off southwest Florida, USA, to evaluate the biomagnification of mercury through the food web. Mercury concentrations (wet wt) and δ15N values were highly variable among species, ranging from 0.004 mg/kg in an unidentified species of brittlestar (class Ophiuroidea) to 2.839 ± 1.39 mg/kg in king mackerel (Scomberomorus...
Show moreTotal mercury and stable isotopes of nitrogen (δ15N) were measured in samples from 57 species of invertebrates (17 species) and finfish (40 species) from the coastal waters off southwest Florida, USA, to evaluate the biomagnification of mercury through the food web. Mercury concentrations (wet wt) and δ15N values were highly variable among species, ranging from 0.004 mg/kg in an unidentified species of brittlestar (class Ophiuroidea) to 2.839 ± 1.39 mg/kg in king mackerel (Scomberomorus cavalla ) and from 4.67‰ in a Florida fighting conch (Strombus alatus ) to 13.68‰ in crevalle jack (Caranx hippos ). In general, observed Hg levels were in the upper range of levels previously reported for other Gulf populations. Species means of log‐transformed Hg concentrations were positively correlated with δ15N (p < 0.001, r 2 = 0.66) and had a slope of 0.21. A trophic magnification factor of 5.05 was calculated from the relationship between log‐transformed mean Hg concentrations and trophic level (calculated from δ15N), indicating that Hg increased by a factor of 5 with each increase in trophic level. The log10[Hg]‐δ15N slope and trophic magnification factor were also in the upper range of values reported from other regions and ecosystems
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Date Issued: 2013-10-05
Identifier: fgcu_ir_001052
Format: Citation

Title: Biomonitoring environmental contaminants near a municipal solid-waste combustor: a decade later.
Creator: Rumbold, Darren, Mihalik, M.B.
Abstract / Description: During the 1999 nesting season, eggs and nestlings of anhingas (Anhinga anhinga) and white ibises (Eudocimus albus) were collected from a colony located on the site of a municipal solid-waste (MSW) combustor and analyzed for residues of chemicals potentially released from this facility. Concentrations of most residues, including tetrachlorodibenzo-p-dioxin (TCDD), tetrachlorodibenzofuran (TCDF), arsenic, beryllium, cadmium and lead, were at levels comparable to those found during a similar...
Show moreDuring the 1999 nesting season, eggs and nestlings of anhingas (Anhinga anhinga) and white ibises (Eudocimus albus) were collected from a colony located on the site of a municipal solid-waste (MSW) combustor and analyzed for residues of chemicals potentially released from this facility. Concentrations of most residues, including tetrachlorodibenzo-p-dioxin (TCDD), tetrachlorodibenzofuran (TCDF), arsenic, beryllium, cadmium and lead, were at levels comparable to those found during a similar survey done in 1989, prior to facility start-up. Nickel residues were detected only sporadically in anhingas and in eggs from ibises, and decreased significantly in concentration in ibis nestlings in 1999 compared to 1989. While concentrations of mercury in anhinga nestlings and in eggs of both species were comparable to 1989 levels, its concentration was significantly greater in ibis nestlings in 1999. However, levels of mercury in the ibises remained relatively low when compared to birds from other areas of Florida and did not appear to represent a health threat. While lead did not increase in 1999, its concentration in ibis nestlings remained a concern. The most notable temporal trend observed in birds at this site was a general monotonic decrease in levels of selenium residues during the 10-year monitoring period.
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Date Issued: 2002-04-01
Identifier: fgcu_ir_001012
Format: Citation

Title: Carbon Sequestration and Sedimentation in Mangrove Swamps Influenced by Hydrogeomorphic Conditions and Urbanization in Southwest Florida.
Creator: Marchio, Daniel, Savarese, Michael, Bovard, Brian, Mitsch, William
Abstract / Description: This study compares carbon sequestration rates along two independent tidal mangrove creeks near Naples Bay in Southwest Florida, USA. One tidal creek is hydrologically disturbed due to upstream land use changes; the other is an undisturbed reference creek. Soil cores were collected in basin, fringe, and riverine hydrogeomorphic settings along each of the two tidal creeks and analyzed for bulk density, total organic carbon profiles, and sediment accretion. Radionuclides 137Cs and 210Pb were...
Show moreThis study compares carbon sequestration rates along two independent tidal mangrove creeks near Naples Bay in Southwest Florida, USA. One tidal creek is hydrologically disturbed due to upstream land use changes; the other is an undisturbed reference creek. Soil cores were collected in basin, fringe, and riverine hydrogeomorphic settings along each of the two tidal creeks and analyzed for bulk density, total organic carbon profiles, and sediment accretion. Radionuclides 137Cs and 210Pb were used to estimate recent sediment accretion and carbon sequestration rates. Carbon sequestration rates (mean ± standard error) for seven sites in the two tidal creeks on the Naples Bay (98 ± 12 g-C m−2·year−1 (n = 18)) are lower than published global means for mangrove wetlands, but consistent with other estimates from the same region. Mean carbon sequestration rates in the reference riverine setting were highest (162 ± 5 g-C m−2·year−1), followed by rates in the reference fringe and disturbed riverine settings (127 ± 6 and 125 ± 5 g-C m−2·year−1, respectively). The disturbed fringe sequestered 73 ± 10 g-C m−2·year−1, while rates within the basin settings were 50 ± 4 g-C m−2·year−1 and 47 ± 4 g-C m−2·year−1 for the reference and disturbed creeks, respectively. These data support our hypothesis that mangroves along a hydrologically disturbed tidal creek sequestered less carbon than did mangroves along an adjacent undisturbed reference creek.
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Date Issued: 2016-05-30
Identifier: 10.3390/f7060116, fgcu_ir_000086, http://www.mdpi.com/1999-4907/7/6/116
Format: Citation

Title: Characteristics of Effluents from Baitfish Holding Sheds in Central Arkansas.
Creator: Adhikari, Puspa, Stone, Nathan, Kelly, Anita M., Thomforde, Hugh K.
Abstract / Description: This study characterized effluents from commercial baitfish holding sheds in central Arkansas, the source of about half of U.S. farm-raised baitfish. Nutrient and solid concentrations in effluents were relatively dilute compared with other aquaculture effluents because fish are not fed while in vats. Total phosphorus concentrations, however, were relatively high (median of 0.52 mg/L in spring, 0.32 mg/L in fall), but source water contributed from 83% to 96% of the total phosphorus...
Show moreThis study characterized effluents from commercial baitfish holding sheds in central Arkansas, the source of about half of U.S. farm-raised baitfish. Nutrient and solid concentrations in effluents were relatively dilute compared with other aquaculture effluents because fish are not fed while in vats. Total phosphorus concentrations, however, were relatively high (median of 0.52 mg/L in spring, 0.32 mg/L in fall), but source water contributed from 83% to 96% of the total phosphorus concentration in baitfish holding shed effluents. Concentrations of total phosphorus similar to those found in study source waters have been documented for other waters from the Mississippi River Valley alluvial aquifer. Daily variations in effluent quality generally overshadowed other temporal variation, with the exception of higher total ammonia concentrations in the spring. Higher loading rates are common in vats in the spring owing to increased baitfish sales. Daily flushing resulted in brief spikes in concentrations of total suspended solids, 5-d biochemical oxygen demand, and total phosphorus; the average contribution of flushing events to total daily loading was estimated to be 5–13%. Results suggest that holding shed effluents could be reused, at least for pond culture, as long as potential disease transmission issues are resolved.
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Date Issued: 2012-02-14
Identifier: fgcu_ir_000917
Format: Citation

Title: Characterization of the putatively introduced red alga Acrochaetium secundatum (Acrochaetiales, Rhodophyta) growing epizoically on the pelage of southern sea otters (Enhydra lutris nereis).
Creator: Rosen, Barry, Bentall, Gena B., Kunz, Jessica M., Miller, Melissa A., Saunders, Gary W., LaRoche, Nicole L.
Abstract / Description: Ecological associations between epibionts (organisms that live on the surface of another living organism) and vertebrates have been documented in both marine and terrestrial environments, and may be opportunistic, commensal, or symbiotic (Lewin et al . 1981, Holmes 1985, Allen et al . 1993, Bledsoe et al . 2006, Pfaller et al . 2008, Suutari et al . 2010). Although epibiont proliferation is frequently reported on slow‐moving, sparsely haired organisms such as manatees and sloths, reports from...
Show moreEcological associations between epibionts (organisms that live on the surface of another living organism) and vertebrates have been documented in both marine and terrestrial environments, and may be opportunistic, commensal, or symbiotic (Lewin et al . 1981, Holmes 1985, Allen et al . 1993, Bledsoe et al . 2006, Pfaller et al . 2008, Suutari et al . 2010). Although epibiont proliferation is frequently reported on slow‐moving, sparsely haired organisms such as manatees and sloths, reports from densely furred, highly mobile mammals are much less common. There are reports of epizoic algae for several species of pinnipeds (Kenyon and Rice 1959, Scheffer 1962, Baldridge 1977, Allen et al . 1993), which rely to varying degrees on both pelage and blubber for thermoregulation, but the phenomenon has not been widely described. Scheffer (1962) noted that red algae was fairly common on the pelage of northern fur seals (Callorhinus ursinus ), pinnipeds for which fur likely makes a comparatively high contribution to thermoregulation (Donohue et al . 2000). For species with pelage that plays a critical role in thermal insulation, it seems implausible that an epibiont would persist on healthy individuals that devote significant energy resources toward grooming and actively maintaining their coat. Biological characteristics of epibiont settlement and attachment, and physiological requirements of epizoic species play key roles in their successful colonization and potential host impacts. To investigate this relationship, we explore a novel discovery of an epizoic alga from southern sea otters, including describing algal development on sea otter hair and molecular identification of the algae.
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Date Issued: 2016-04-01
Identifier: fgcu_ir_000988
Format: Document (PDF)

Title: Coastal inundation research: an overview of the process.
Creator: Jose, Felix, Gayathri, R., Bhaskaran, Prasad K.
Abstract / Description: Coastal inundation is the flooding of coastal zone resulting from increased river discharge, spring tides, severe storms, or generation of powerful waves from tectonic activity (tsunami). This article discusses the critical factors that contribute to coastal inundation. Among the probable factors that cause coastal flooding and destruction, storm surge is the most frequent, and hence this article provides a detailed evaluation of the progress made in storm inundation research. Recent advances...
Show moreCoastal inundation is the flooding of coastal zone resulting from increased river discharge, spring tides, severe storms, or generation of powerful waves from tectonic activity (tsunami). This article discusses the critical factors that contribute to coastal inundation. Among the probable factors that cause coastal flooding and destruction, storm surge is the most frequent, and hence this article provides a detailed evaluation of the progress made in storm inundation research. Recent advances in coastal inundation modelling include efforts to understand the nonlinear dynamic interaction of near-shore waves, wind and atmospheric pressure with still water sea level and coastal currents, and their combined effects on storm surge along the coast and interaction with coastal morphology. An advanced storm-surge model comprises different modules, viz. an atmospheric component, and two ocean components for surge and wave simulations; these modules are coupled with each other. The nesting of regional coastal model with an ocean-wide model captures the far-field boundary forcing of extreme events that usually originate from the warm open ocean. Even though significant advancements reported on the efficiency and accuracy of storm surge and inundation prediction, further studies are required to understand the nonlinear interaction of storm surge with coastal landforms and their vegetation (land cover). In the context of rising sea level, increased tropical cyclone activity and rapid shoreline change, it is pertinent to evaluate the future flooding risk associated with landfall of tropical cyclones in densely populated coastal cities
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Date Issued: 2017-01-25
Identifier: fgcu_ir_000942
Format: Citation

Title: Coastal Inundation Research:An overview of the Process.
Creator: Gayathri, R., Bhaskaran, Prasad K., Jose, Felix
Abstract / Description: Coastal inundation is the flooding of coastal zone resulting from increased river discharge, spring tides, severe storms, or generation of powerful waves from tectonic activity (tsunami). This article discusses the critical factors that contribute to coastal inundation. Among the probable factors that cause coastal flooding and destruction, storm surge is the most frequent, and hence this article provides a detailed evaluation of the progress made in storm inundation research. Recent advances...
Show moreCoastal inundation is the flooding of coastal zone resulting from increased river discharge, spring tides, severe storms, or generation of powerful waves from tectonic activity (tsunami). This article discusses the critical factors that contribute to coastal inundation. Among the probable factors that cause coastal flooding and destruction, storm surge is the most frequent, and hence this article provides a detailed evaluation of the progress made in storm inundation research. Recent advances in coastal inundation modelling include efforts to understand the nonlinear dynamic interaction of near-shore waves, wind and atmospheric pressure with still water sea level and coastal currents, and their combined effects on storm surge along the coast and interaction with coastal morphology. An advanced storm-surge model comprises different modules, viz. an atmospheric component, and two ocean components for surge and wave simulations; these modules are coupled with each other. The nesting of regional coastal model with an ocean-wide model captures the far-field boundary forcing of extreme events that usually originate from the warm open ocean. Even though significant advancements reported on the efficiency and accuracy of storm surge and inundation prediction, further studies are required to understand the nonlinear interaction of storm surge with coastal landforms and their vegetation (land cover). In the context of rising sea level, increased tropical cyclone activity and rapid shoreline change, it is pertinent to evaluate the future flooding risk associated with landfall of tropical cyclones in densely populated coastal cities.
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Date Issued: 2017-01-25
Identifier: 10.18520/cs/v112/i02/267-278, fgcu_ir_000085, http://www.currentscience.ac.in/Volumes/112/02/0267.pdf
Format: Citation

Title: Codling moth control in apples.
Creator: Evers, Chad, Van Steenwyk, Robert A., Coates, William W.
Abstract / Description: This trial was designed to evaluate reduced-risk insecticides as possible replacements for the grower standard insecticides. This trial was conducted on 'Granny Smith' apple trees in a commercial orchard near Hollister, CA. Fifteen treatments were replicated four times in a RCB design. Each replicate was a group of three trees with one buffer tree between each replicate. The trees were about 12 ft tall. Treatments were applied with a handgun orchard sprayer operating at 200 psi and delivering...
Show moreThis trial was designed to evaluate reduced-risk insecticides as possible replacements for the grower standard insecticides. This trial was conducted on 'Granny Smith' apple trees in a commercial orchard near Hollister, CA. Fifteen treatments were replicated four times in a RCB design. Each replicate was a group of three trees with one buffer tree between each replicate. The trees were about 12 ft tall. Treatments were applied with a handgun orchard sprayer operating at 200 psi and delivering a finished spray volume of 150 gpa (5.0 gal per replicate). Application timings were based on degree-days (DD). DD were calculated with a biofix of 22 Mar for the first generation, a biofix of 19 Jun for the second generation, and a biofix of 13 Aug for the third generation using a single sine horizontal cutoff model with a lower threshold of 50°F and an upper threshold of 88°F. Maximum and minimum air temperatures were obtained from the Ausaymas Touchtone #56 weather station in San Benito County, CA. Control of CM was evaluated at the end of the first generation on 19 Jun by inspecting 250 fruit per replicate. CM infestation damage was evaluated on 17 Sep at commercial harvest by inspecting 250 fruit per replicate. Control of motile TSSM and WPM was evaluated by brushing and counting under magnification 20 leaves per replicated on 4, 11 and 18 Aug. Data were analyzed using ANOVA and means were separated using Fisher's protected LSD, (P ≤ 0.05).
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Date Issued: 2009-01-01
Identifier: fgcu_ir_000939
Format: Document (PDF)

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