Current Search:  Indian River Fla. River (x)

View All Items

  • CSV Spreadsheet
(21 - 40 of 114)

Pages

Relationships Between Eutrophication and Acidification in the Indian River Lagoon
Title
Relationships Between Eutrophication and Acidification in the Indian River Lagoon.
Creator
Kaiser, Bret R., Lapointe, Brian E., Florida Atlantic University, Charles E. Schmidt College of Science, Center for Environmental Studies
Abstract/Description
In the eutrophic waters of the Indian River Lagoon (IRL), decreases in overall shellfish size have been reported, which may be related to coastal acidification. To understand the relationship between acidification and eutrophication, water samples from 20 sites spanning the IRL were collected and analyzed for dissolved nutrients and omega values in spring (dry season) and fall (wet season), 2016-2017. Additionally, three sites were sampled weekly to observe temporal variability of nutrients...
Show moreIn the eutrophic waters of the Indian River Lagoon (IRL), decreases in overall shellfish size have been reported, which may be related to coastal acidification. To understand the relationship between acidification and eutrophication, water samples from 20 sites spanning the IRL were collected and analyzed for dissolved nutrients and omega values in spring (dry season) and fall (wet season), 2016-2017. Additionally, three sites were sampled weekly to observe temporal variability of nutrients and omega values. For the IRL-Wide sampling, sites with higher dissolved nutrient concentrations showed lower omega values with significant negative relationships. Both sampling programs showed an overall positive linear relationship between salinity and omega values. This work suggests that salinity and dissolved nutrients have implications for acidification in the IRL and must be considered for future water quality, shellfish and coral reef restoration.
Show less
Date Issued
2018
PURL
http://purl.flvc.org/fau/fd/FA00013039
Subject Headings
Indian River (Fla. : Lagoon), Eutrophication, Acidification
Format
Document (PDF)
The Role Of Disturbance In The Genotypic And Morphological Diversity Of Halodule Wrightii
Title
The Role Of Disturbance In The Genotypic And Morphological Diversity Of Halodule Wrightii.
Creator
Tiling, Kathryn A., Proffitt, C. Edward, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
Seagrasses are important foundation species in coastal ecosystems. Genetic diversity of seagrasses can influence a number of ecological factors including, but not limited to, disturbance resistance and resilience. Seagrasses in the Indian River Lagoon (IRL), Florida are considered to be highly disturbed due to frequent events, like algal blooms, that impair water quality, reducing available light for seagrass growth. Halodule wrightii is a dominant seagrass throughout the IRL, but its genetic...
Show moreSeagrasses are important foundation species in coastal ecosystems. Genetic diversity of seagrasses can influence a number of ecological factors including, but not limited to, disturbance resistance and resilience. Seagrasses in the Indian River Lagoon (IRL), Florida are considered to be highly disturbed due to frequent events, like algal blooms, that impair water quality, reducing available light for seagrass growth. Halodule wrightii is a dominant seagrass throughout the IRL, but its genetic diversity has only been quantified in a few Gulf of Mexico and Florida Bay populations and little is known about its potential ecological consequences. I quantified the genetic variation of H. wrightii using microsatellite markers in the southern IRL to determine: (i) how disturbance history influenced genetic diversity, (ii) if morphology of clones was, in part, genetically controlled and related to disturbance history, and (iii) if genotypes showed phenotypic plasticity in response to disturbances. In the IRL, H. wrightii populations exhibited moderate genetic diversity that varied with disturbance history. The disturbance history of a population was classified by the variance in the percent occurrence of H. wrightii over a 16-year period. Genotypic richness and clonal diversity of H. wrightii increased with increasing disturbance histories. Other genetic diversity measures (e.g., allelic richness, observed heterozygosity) did not change with disturbance history. These findings suggest that impacts to seagrass coverage over time can change the genotypic composition of populations. When different genotypes of H. wrightii were grown in a common garden, differences in leaf characteristics among genotypes provided evidence that morphological trait variation is, in part, explained by genetic variance. The disturbance history of genotypes did not directly affect morphological traits. However, significant genotype x site (within disturbance history) interactions found greater variation in shoot density and below ground traits of H. wrightii genotypes from sites of intermediate disturbance history. Traits of H. wrightii were shown to be phenotypically plastic. Significant genotype x environment interactions for shoot density and height demonstrated that genotypes responded differently by increasing, decreasing, and not changing sizes in response to light reduction. Genetic diversity of H. wrightii has strong implications for ecological function in coastal communities.
Show less
Date Issued
2016
PURL
http://purl.flvc.org/fau/fd/FA00004661, http://purl.flvc.org/fau/fd/FA00004661
Subject Headings
Indian River (Fla. : Lagoon) -- Enviornmental conditions, Indian River Lagoon National Estuary Program (Fla.), Marine ecology -- Florida -- Indian River (Lagoon), Restoration ecology, Seagrasses -- Florida -- Indian River (Lagoon), Seagrasses -- Physiology
Format
Document (PDF)
Oranges and inlets
Title
Oranges and inlets: an environmental history of Florida's Indian River Lagoon.
Creator
Osborn, Nathaniel, Dorothy F. Schmidt College of Arts and Letters, Department of History
Abstract/Description
Nineteenth century settlers in Florida's Indian River Lagoon (IRL) region created an isolated fringe culture wholly dependent on the instable hydrological forces of the shallow lagoon system. These settlers were among the first to construct a built environment market by the dredging and filling that would define much of the twentieth century Sunshine State. There has been no period when the liminal IRL ecosystem was not without shifting barrier islands and dramatically varying salinity levels...
Show moreNineteenth century settlers in Florida's Indian River Lagoon (IRL) region created an isolated fringe culture wholly dependent on the instable hydrological forces of the shallow lagoon system. These settlers were among the first to construct a built environment market by the dredging and filling that would define much of the twentieth century Sunshine State. There has been no period when the liminal IRL ecosystem was not without shifting barrier islands and dramatically varying salinity levels due primarily to the oceanic interchange following the opening and closing of natural inlets. This paper suggests that attempts to "restore" the lagoon will necessarily declare an arbitrary historical form to be normative for the system. The first and last chapters provide an overview of the system's origins and recent history, while the core of the paper focuses on human-environment interaction of the lagoon in the late nineteenth and early twentieth century.
Show less
Date Issued
2012
PURL
http://purl.flvc.org/FAU/3355868
Subject Headings
History, Environmental aspects, History, Environmental aspects
Format
Document (PDF)
Examination of the Use of Floating Individuals of Halodule wrightii (Ascherson, 1868) for Restoration
Title
Examination of the Use of Floating Individuals of Halodule wrightii (Ascherson, 1868) for Restoration.
Creator
Berninger, Jacob J., Hanisak, M. Dennis, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
The goal of this study was to develop an alternative approach to typical seagrass transplantation techniques that damage the donor bed. Floating individuals of Halodule wrightii were collected in the Indian River Lagoon (IRL), Florida, during fall of 2013 and spring of 2014, with the fall collection planted in outdoor tanks. Only 25% of individuals collected in the fall survived the winter in the tanks. Individuals from both collections were deployed onto biodegradable mats in a capped dredge...
Show moreThe goal of this study was to develop an alternative approach to typical seagrass transplantation techniques that damage the donor bed. Floating individuals of Halodule wrightii were collected in the Indian River Lagoon (IRL), Florida, during fall of 2013 and spring of 2014, with the fall collection planted in outdoor tanks. Only 25% of individuals collected in the fall survived the winter in the tanks. Individuals from both collections were deployed onto biodegradable mats in a capped dredge hole in the IRL in March, 2014. Approximately 66% of the mats survived the six-month experiment, and the area covered by seagrass quadrupled. Growth in shoot count, average height, horizontal spread, and biomass was similar for both fall and spring treatments. Thus, time and effort of overwintering had no benefit over spring harvesting. The use of floating individuals can provide a more practical, environmentally friendly alternative to traditional transplanting for seagrass re storation.
Show less
Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00004482, http://purl.flvc.org/fau/fd/FA00004482
Subject Headings
Indian River (Fla. : Lagoon) -- Environmental conditions, Restoration ecology -- Florida -- Indian River (Lagoon), Seagrass restoration -- Florida -- Indian River (Lagoon), Seagrasses -- Conservation -- Florida -- Indian River (Lagoon)
Format
Document (PDF)
A comparison of primary production rates in Indian River, Florida seagrass systems
Title
A comparison of primary production rates in Indian River, Florida seagrass systems.
Creator
Heffernan, John J., Gibson, R. A., Harbor Branch Oceanographic Institute
Date Issued
1983
PURL
http://purl.flvc.org/fau/fd/FA00007477
Subject Headings
Indian River (Fla. : Lagoon), Primary productivity (Biology), Seagrasses--Florida--Indian River (Lagoon)
Format
Document (PDF)
Residues of polychlorinated biphenyls and DDT in water and sediment of the Indian River Lagoon, Florida—1977-1978
Title
Residues of polychlorinated biphenyls and DDT in water and sediment of the Indian River Lagoon, Florida—1977-1978.
Creator
Wang, Tsen C., Johnson, R. S., Bricker, J. L., Harbor Branch Oceanographic Institute
Date Issued
1980
PURL
http://purl.flvc.org/FCLA/DT/3352187
Subject Headings
Indian River (Fla. : Lagoon), DDT (Insecticide), Polychlorinated biphenyls, River sediments, Water quality
Format
Document (PDF)
Observations ofloculi and associated extracellular material in several Mastogloia (Bacillariophyceae) species
Title
Observations ofloculi and associated extracellular material in several Mastogloia (Bacillariophyceae) species.
Creator
Stephens, F. C., Gibson, R. A., Harbor Branch Oceanographic Institute
Date Issued
1979
PURL
http://purl.flvc.org/fau/fd/FA00007134
Subject Headings
Indian River (Fla. : River), Bacillariophyceae, Diatoms, Diatoms--Frustules, Extracellular matrix
Format
Document (PDF)
Ecotopic and ontogenetic trophic variation in mojarras (Pisces: Gerreidae)
Title
Ecotopic and ontogenetic trophic variation in mojarras (Pisces: Gerreidae).
Creator
Kerschner, Barbara A., Peterson, Mark S., Gilmore, R. G., Harbor Branch Oceanographic Institute
Date Issued
1985
PURL
http://purl.flvc.org/FCLA/DT/3174858
Subject Headings
Indian River (Fla. : Lagoon), Perciformes, Ontogeny, Fishes--Nutrition
Format
Document (PDF)
Environmental and biogeographic factors influencing ichthyofaunal diversity: Indian River Lagoon
Title
Environmental and biogeographic factors influencing ichthyofaunal diversity: Indian River Lagoon.
Creator
Gilmore, R. G., Harbor Branch Oceanographic Institute
Date Issued
1995
PURL
http://purl.flvc.org/FCLA/DT/3172869
Subject Headings
Indian River (Fla.: Lagoon), Fish surveys, Biodiversity, Environmental geomorphology, Biogeography
Format
Document (PDF)
Seasonal variation in species composition of recently settled fouling communities along an environmental gradient in the Indian River Lagoon, Florida
Title
Seasonal variation in species composition of recently settled fouling communities along an environmental gradient in the Indian River Lagoon, Florida.
Creator
Mook, David H., Harbor Branch Oceanographic Institute
Date Issued
1980
PURL
http://purl.flvc.org/FCLA/DT/3172955
Subject Headings
Fouling organisms, Species, Seasons, Distribution, Indian River (Fla.: Lagoon)
Format
Document (PDF)
Studies on fouling invertebrates in the Indian River, Florida 2: effect of Modulus modulus (Prosobranchia: Modulidae)
Title
Studies on fouling invertebrates in the Indian River, Florida 2: effect of Modulus modulus (Prosobranchia: Modulidae).
Creator
Mook, David H., Harbor Branch Oceanographic Institute
Date Issued
1977
PURL
http://purl.flvc.org/FCLA/DT/3186449
Subject Headings
Fouling organisms, Prosobranchia, Indian River (Fla. : Lagoon), Seagrasses--Ecology
Format
Document (PDF)
Chlorinated pesticide residue occurrence and distribution in mosquito control impoundments along the Florida Indian River lagoon
Title
Chlorinated pesticide residue occurrence and distribution in mosquito control impoundments along the Florida Indian River lagoon.
Creator
Wang, Tsen C., Hoffman, M. E., David, J. R., Parkinson, R., Harbor Branch Oceanographic Institute
Date Issued
1992
PURL
http://purl.flvc.org/FCLA/DT/3333199
Subject Headings
Organochlorine compounds, Pesticides, Mosquitoes--Control, Indian River (Fla. : Lagoon)
Format
Document (PDF)
Enhancing hard clam (Mercenaria spp.) population density in the Indian River Lagoon, Florida: a comparison of strategies to maintain the commercial fishery
Title
Enhancing hard clam (Mercenaria spp.) population density in the Indian River Lagoon, Florida: a comparison of strategies to maintain the commercial fishery.
Creator
Arnold, William S., Marelli, Dan C., Parker, Melanie, Hoffman, Philip, Frischer, Marc E., Scarpa, John
Date Issued
2002
PURL
http://purl.flvc.org/FCLA/DT/3174053
Subject Headings
Clam fisheries, Northern Quahog, Spawning, Population, Indian River (Fla.: Lagoon)
Format
Document (PDF)
Estuaries in distress
Title
Estuaries in distress.
Creator
Barile, Peter J., Lapointe, Brian E.
Date Issued
1999
PURL
http://purl.flvc.org/fau/fd/FA00007317
Subject Headings
Estuaries, Hydrogen sulfide, Algae, Indian River (Fla. : Lagoon)
Format
Document (PDF)
Effect of selected marine and freshwater microalgae on development and survival of the mosquito Aedes aegypti
Title
Effect of selected marine and freshwater microalgae on development and survival of the mosquito Aedes aegypti.
Creator
Rey, Jorge R., Hargraves, Paul E., O'Connell, Sheila M.
Date Issued
2009
PURL
http://purl.flvc.org/FCLA/DT/2796089
Subject Headings
Microalgae, Aedes aegypti, Allelopathy, Mosquitoes --Larvae, Indian River County (Fla.)
Format
Document (PDF)
Colonization of artificial seagrass versus time and distance from source
Title
Colonization of artificial seagrass versus time and distance from source.
Creator
Virnstein, Robert W., Curran, M. C., Harbor Branch Oceanographic Institute
Date Issued
1986
PURL
http://purl.flvc.org/FCLA/DT/3350852
Subject Headings
Seagrasses, Indian River (Fla.: Lagoon), Colonization (Ecology), Crustaceans, Gastropoda
Format
Document (PDF)
Sieving pecision and reproducibility: Sonic Sifter versus Ro-Tap
Title
Sieving pecision and reproducibility: Sonic Sifter versus Ro-Tap.
Creator
Wolcott, R. Timothy
Date Issued
1976-07-23
PURL
http://purl.flvc.org/fcla/dt/3359099
Subject Headings
Sediment, Indian River (Fla. : Lagoon), Particle size determination, Sedimentation analysis
Format
Document (PDF)
Toxic substance monitoring in the IndianRiver Lagoon, Florida
Title
Toxic substance monitoring in the IndianRiver Lagoon, Florida.
Creator
Wang, Tsen C., Harbor Branch Oceanographic Institute
Date Issued
1983
PURL
http://purl.flvc.org/fau/fd/FA00007485
Subject Headings
Indian River (Fla. : Lagoon), Organochlorine compounds, Pesticides, Polychlorinated biphenyls
Format
Document (PDF)
Assimilation of malathion in the Indian River estuary, Florida
Title
Assimilation of malathion in the Indian River estuary, Florida.
Creator
Wang, Tsen C., Harbor Branch Oceanographic Institute
Date Issued
1991
PURL
http://purl.flvc.org/FCLA/DT/3333182
Subject Headings
Malathion, Indian River (Fla. : Lagoon), Insecticides, Estuaries Florida
Format
Document (PDF)
Fragments of the seagrasses Halodule wrightii and Halophila johnsonii as potential recruits in Indian River Lagoon, Florida
Title
Fragments of the seagrasses Halodule wrightii and Halophila johnsonii as potential recruits in Indian River Lagoon, Florida.
Creator
Hall, L. M., Hanisak, M. Dennis, Virnstein, Robert W.
Date Issued
2006
PURL
http://purl.flvc.org/FCLA/DT/3350902
Subject Headings
Seagrasses, Halophila, Indian River (Fla. : Lagoon), Seagrass restoration, Vegetative propagation
Format
Document (PDF)

Pages