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Mitochondrial DNA phylogeny of the symbiotic dinoflagellates (Symbiodinium, Dinophyta)
Title
Mitochondrial DNA phylogeny of the symbiotic dinoflagellates (Symbiodinium, Dinophyta).
Creator
Takabayashi, Misaki, Santos, Scott R., Cook, Clayton B.
Date Issued
2004
PURL
http://purl.flvc.org/FCLA/DT/3174099
Subject Headings
Algal blooms, Dinoflagellates
Format
Document (PDF)
Phosphorus inputs and eutrophication on the Florida reef tract
Title
Phosphorus inputs and eutrophication on the Florida reef tract.
Creator
Lapointe, Brian E., Matzie, William R., Clark, Mark W.
Date Issued
1993
PURL
http://purl.flvc.org/FCLA/DT/3340501
Subject Headings
Reefs--Florida, Phosphorus, Eutrophication, Algal blooms
Format
Document (PDF)
UTILIZATION OF ORGANIC PHOSPHORUS COMPOUNDS BY AXENIC MICROCYSTIS AERUGINOSA
Title
UTILIZATION OF ORGANIC PHOSPHORUS COMPOUNDS BY AXENIC MICROCYSTIS AERUGINOSA.
Creator
Breeden, Kelley L., Baldwin, John, Louda, J. William, Florida Atlantic University, Department of Environmental Sciences, Charles E. Schmidt College of Science
Abstract/Description
Freshwater harmful algal blooms (HABs) are increasing in severity and frequency. These blooms are devastating to the communities surrounding these bodies of water due to their numerous health, economic, and environmental impacts (Hallegraeff et al. 1995; Smith 2003; O’Neil et al. 2012; Bláha et al. 2009; V. H. Smith et al. 1999). In Florida, runoff containing fertilizers, human wastes, or industrial wastes contribute to the eutrophication in these lakes and contribute to these freshwater...
Show moreFreshwater harmful algal blooms (HABs) are increasing in severity and frequency. These blooms are devastating to the communities surrounding these bodies of water due to their numerous health, economic, and environmental impacts (Hallegraeff et al. 1995; Smith 2003; O’Neil et al. 2012; Bláha et al. 2009; V. H. Smith et al. 1999). In Florida, runoff containing fertilizers, human wastes, or industrial wastes contribute to the eutrophication in these lakes and contribute to these freshwater blooms (Val H. Smith 2003; Heisler et al. 2008; O’Neil et al. 2012). M. aeruginosa, a toxic cyanobacterium, often devastates Lake Okeechobee. M. aeruginosa die off creates anoxic conditions and produces a toxin that causes major environmental loss. This project is aimed to increase knowledge on how organic phosphorus compounds affect the growth of the axenic M. aeruginosa and investigate the postulated interactome (Cook et al. 2020). Through these experiments, it was shown that axenic M. aeruginosa cannot utilize organic phosphorus compounds and therefore shows no growth when grown in this media. This research is critical to furthering our understanding of the mechanisms behind these blooms and to mitigating them.
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Date Issued
2023
PURL
http://purl.flvc.org/fau/fd/FA00014249
Subject Headings
Microcystis aeruginosa, Harmful Algal Bloom, Organophosphorus Compounds
Format
Document (PDF)
Photoacclimation and the effect of the symbiotic environment on the photosynthetic response of symbiotic dinoflagellates in the tropical marine hydroid Myrionema amboinense
Title
Photoacclimation and the effect of the symbiotic environment on the photosynthetic response of symbiotic dinoflagellates in the tropical marine hydroid Myrionema amboinense.
Creator
Fitt, William K., Cook, Clayton B.
Date Issued
2001
PURL
http://purl.flvc.org/FCLA/DT/3165436
Subject Headings
Phytoplankton --Adaptation, Symbiosis, Dinoflagellates, Zooxanthella, Algae culture, Algal blooms, Hydromedusae
Format
Document (PDF)
PSEUDO-NITZSCHIA IN THE INDIAN RIVER LAGOON: AN EMERGING THREAT FOR FLORIDA
Title
PSEUDO-NITZSCHIA IN THE INDIAN RIVER LAGOON: AN EMERGING THREAT FOR FLORIDA.
Creator
Schreiber, Stephanie, Sullivan, James, Florida Atlantic University, Department of Marine Science and Oceanography, Charles E. Schmidt College of Science
Abstract/Description
The Indian River Lagoon (IRL) spans approximately one-third of the east coast of Florida and faces numerous harmful algal blooms. The potentially toxic diatom, Pseudonitzschia, has been observed in many locations of the IRL. The goal of this study was to obtain a better understanding of the factors contributing to population dynamics of Pseudo-nitzschia in the southern IRL system. Bi-monthly surface water samples were collected for 18 months from five locations. Cell counts enumerated all...
Show moreThe Indian River Lagoon (IRL) spans approximately one-third of the east coast of Florida and faces numerous harmful algal blooms. The potentially toxic diatom, Pseudonitzschia, has been observed in many locations of the IRL. The goal of this study was to obtain a better understanding of the factors contributing to population dynamics of Pseudo-nitzschia in the southern IRL system. Bi-monthly surface water samples were collected for 18 months from five locations. Cell counts enumerated all microphytoplankton, and environmental data was collected at sampling sites throughout the study by the Indian River Lagoon Observatory Network. Six species of Pseudonitzschia were isolated and characterized through 18S Sanger sequencing and scanning electron microscopy, all showed toxicity. Surface water samples also showed domoic acid (DA) presence. We report the first known occurrence of Pseudo-nitzschia micropora in the IRL and the first known DA production from this taxon.
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Date Issued
2021
PURL
http://purl.flvc.org/fau/fd/FA00013714
Subject Headings
Pseudo-nitzschia, Indian River (Fla. : Lagoon), Algal blooms, Phytoplankton
Format
Document (PDF)
Simultaneous top-down and bottom-up forces control macroalgal blooms on coral reefs (Reply to the comment by Hughes et al.)
Title
Simultaneous top-down and bottom-up forces control macroalgal blooms on coral reefs (Reply to the comment by Hughes et al.).
Creator
Lapointe, Brian E.
Date Issued
1999
PURL
http://purl.flvc.org/FCLA/DT/3172685
Subject Headings
Coral reef ecology, Algal blooms, Marine algae --Effect of grazing on, Eutrophication, Herbivores
Format
Document (PDF)
Nutrient thresholds for bottom-up control of macroalgal blooms on coral reefs in Jamaica and southeast Florida
Title
Nutrient thresholds for bottom-up control of macroalgal blooms on coral reefs in Jamaica and southeast Florida.
Creator
Lapointe, Brian E.
Date Issued
1997
PURL
http://purl.flvc.org/FCLA/DT/3343825
Subject Headings
Coral reefs and islands--Caribbean Area, Algal blooms, Algae--Control
Format
Document (PDF)
From monsoons to microbes: understanding the ocean's role in human health
Title
From monsoons to microbes: understanding the ocean's role in human health.
Creator
National Research Council (U.S.) Committee on the Ocean’sRole in Human Health, Pomponi, Shirley A.
Date Issued
1999
PURL
http://purl.flvc.org/fau/fd/FA00007391
Subject Headings
Marine pollution -- Health aspects, Marine pharmacology, Biomedical Research, Infectious Diseases, Algal blooms--Health aspects
Format
Document (PDF)
Ecology and nutrition of invasive Caulerpa brachypus f. parvifolia blooms on coral reefs off southeast Florida, U.S.A.
Title
Ecology and nutrition of invasive Caulerpa brachypus f. parvifolia blooms on coral reefs off southeast Florida, U.S.A.
Creator
Lapointe, Brian E., Bedford, Bradley J.
Date Issued
2010-01
PURL
http://purl.flvc.org/FCLA/DT/1925499
Subject Headings
Coral reef ecology --Florida --Florida Keys, Coral reef ecology, Coral reef biology, Algal blooms, Algae Toxicology
Format
Document (PDF)
Hurricanes Frances and Jeanne remove blooms of the invasive green alga Caulerpa brachypus forma parvifolia (Harvey) Cribb from coral reefs off northern Palm Beach County, Florida
Title
Hurricanes Frances and Jeanne remove blooms of the invasive green alga Caulerpa brachypus forma parvifolia (Harvey) Cribb from coral reefs off northern Palm Beach County, Florida.
Creator
Lapointe, Brian E., Bedford, Bradley J., Baumberger, Rex E., Jr.
Date Issued
2006
PURL
http://purl.flvc.org/FCLA/DT/3174028
Subject Headings
Hurricanes, Algal blooms, Organisms, Coral reefs and islands, Nutrient pollution of water
Format
Document (PDF)
impacts of harmful algal blooms on a Florida reef fish community
Title
The impacts of harmful algal blooms on a Florida reef fish community.
Creator
Baumberger, Rex E., Jr., Charles E. Schmidt College of Science, Biology
Abstract/Description
Coral reefs worldwide are threatened by many environmental disturbances including harmful algal blooms (HABs) which have been increasing on Florida coasts over the past decade. Research has mainly focused on HAB identification, percent cover and other effects on the benthos but the relationship of HABs with upper trophic levels has received less attention. To study this relationship, a two-year investigation on a 10-m deep reef off of Hallandale Beach, was conducted. Stationary fish census...
Show moreCoral reefs worldwide are threatened by many environmental disturbances including harmful algal blooms (HABs) which have been increasing on Florida coasts over the past decade. Research has mainly focused on HAB identification, percent cover and other effects on the benthos but the relationship of HABs with upper trophic levels has received less attention. To study this relationship, a two-year investigation on a 10-m deep reef off of Hallandale Beach, was conducted. Stationary fish census coupled with benthic transect videos were conducted quarterly between April 2005-July 2007. A significant correlation between Lyngbya sp. blooms and alterations in fish assemblages was observed. Lyngbya had a negative interaction with fish species and abundance; additionally, HAB sample periods were significantly different from low algal abundance periods. Blooms of Dictyota sp. had no measurable relationship with the fish assemblage indicating HABs may have variable impacts on fishes depending on family, species and chemistry of the algae.
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Date Issued
2008
PURL
http://purl.flvc.org/FAU/186286
Subject Headings
Toxic algae, Environmental aspects, Algal blooms, Environmental aspects, Water quality biological assessment, Coral reef ecology
Format
Document (PDF)
THE BULL SHARK (CARCHARHINUS LEUCAS) AS A SENTINEL SPECIES FOR HARMFUL ALGAL BLOOM TOXINS IN THE INDIAN RIVER LAGOON, FLORIDA
Title
THE BULL SHARK (CARCHARHINUS LEUCAS) AS A SENTINEL SPECIES FOR HARMFUL ALGAL BLOOM TOXINS IN THE INDIAN RIVER LAGOON, FLORIDA.
Creator
Edwards, Michelle L., Ajemian, Matt, Florida Atlantic University, Department of Marine Science and Oceanography, Charles E. Schmidt College of Science
Abstract/Description
This study explored spatiotemporal patterns in movement, diet, and baseline phycotoxin concentrations in immature bull sharks (Carcharhinus leucas) of the Indian River Lagoon (IRL), an estuary of national significance that has been considerably impacted by multiple toxic harmful algal blooms (HABs). Long-term spatial use of the system was assessed for 29 acoustically tagged sharks over a 4 year period (2017–2020). Tissue samples for diet and toxin analysis were collected from a separate...
Show moreThis study explored spatiotemporal patterns in movement, diet, and baseline phycotoxin concentrations in immature bull sharks (Carcharhinus leucas) of the Indian River Lagoon (IRL), an estuary of national significance that has been considerably impacted by multiple toxic harmful algal blooms (HABs). Long-term spatial use of the system was assessed for 29 acoustically tagged sharks over a 4 year period (2017–2020). Tissue samples for diet and toxin analysis were collected from a separate cohort of 50 individuals between 2018 and 2020. UPLC-MS/MS was used to screen tissues for 14 algal toxins. Young bull sharks were found to be mainly piscivorous and displayed high residency to the IRL as well as to specific regions of the IRL, with small activity spaces. Multiple phycotoxins were detected in screened tissues, indicating that young bull sharks in the IRL may be compromised by trophic transfer of HABs while they reside in this important nursery.
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Date Issued
2021
PURL
http://purl.flvc.org/fau/fd/FA00013807
Subject Headings
Harmful Algal Bloom, Indian River (Fla. : Lagoon), Bull shark, Carcharhinus leucas, Sentinel Species
Format
Document (PDF)
NITROGEN ENRICHMENT, EUTROPHICATION, AND BOTTOM-UP TROPHIC SHIFTS IN ECOSYSTEMS OF THE INDIAN RIVER LAGOON
Title
NITROGEN ENRICHMENT, EUTROPHICATION, AND BOTTOM-UP TROPHIC SHIFTS IN ECOSYSTEMS OF THE INDIAN RIVER LAGOON.
Creator
Brewton, Rachel A., Lapointe, Brian, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
Abstract/Description
Eutrophication of urbanized estuaries is a global issue that continues to worsen as coastal development increases. The Indian River Lagoon (IRL) on Florida’s east-central coast is a eutrophic estuary that is experiencing harmful algal blooms of macroalgae and phytoplankton, as well as widespread seagrass losses. This is concerning as seagrasses provide many ecosystem services, including the provision of essential habitat. These alterations in benthic cover can have ecosystem level effects and...
Show moreEutrophication of urbanized estuaries is a global issue that continues to worsen as coastal development increases. The Indian River Lagoon (IRL) on Florida’s east-central coast is a eutrophic estuary that is experiencing harmful algal blooms of macroalgae and phytoplankton, as well as widespread seagrass losses. This is concerning as seagrasses provide many ecosystem services, including the provision of essential habitat. These alterations in benthic cover can have ecosystem level effects and require further investigation. Thus, drivers and effects of primary producer alterations in the IRL were investigated through analysis of long-term monitoring data, field surveys of faunal densities inhabiting macroalgae and bare bottom habitats, and stable nitrogen isotope (δ15N) analyses of primary producers, primary consumers, and secondary consumers. Long-term monitoring data from the northern IRL (NIRL) and Banana River Lagoon (BR) demonstrated there have been major seagrass losses coupled with increases in occurrence of the rhizophytic green macroalgae Caulerpa prolifera, which is now the dominant benthic cover in many locations. Multivariate analyses of long-term monitoring data spanning 2011-2020 suggested that the carbon to phosphorus ratio (C:P) of macroalgae is an important factor related to annual changes in benthic cover in the NIRL and BR; increased P-availability is correlated with these primary producer shifts. In situ collections of macroinvertebrates and resident fishes showed the current function and importance of macroalgae as habitat in the NIRL and BR, particularly in the relative absence of seagrass.
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Date Issued
2023
PURL
http://purl.flvc.org/fau/fd/FA00014231
Subject Headings
Indian River (Fla. : Lagoon), Estuarine eutrophication, Nitrogen, Harmful Algal Bloom, Estuarine ecology
Format
Document (PDF)
The Ascidian Styela plicata As a Potential Bioremediator of the Brown Tide Pelagophytes Aureoumbra lagunensis and Aureococcus anophagefferens
Title
The Ascidian Styela plicata As a Potential Bioremediator of the Brown Tide Pelagophytes Aureoumbra lagunensis and Aureococcus anophagefferens.
Creator
Klarmann, Phyllis A., Hartmann, James X., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
A brown tide bloom of the pelagophyte Aureoumbra lagunensis caused significant impacts to north Indian River Lagoon (IRL) in 2012-2013, including seagrass die-offs, fish kills, and reduced growth and grazing of ecologically important bivalves. There is potential for another pelagophyte, Aureococcus anophagefferens, to expand into this system. Filtration rates (FR) of the pleated tunicate Styela plicata exposed to Aureoumbra lagunensis and Aureococcus anophagefferens were measured against...
Show moreA brown tide bloom of the pelagophyte Aureoumbra lagunensis caused significant impacts to north Indian River Lagoon (IRL) in 2012-2013, including seagrass die-offs, fish kills, and reduced growth and grazing of ecologically important bivalves. There is potential for another pelagophyte, Aureococcus anophagefferens, to expand into this system. Filtration rates (FR) of the pleated tunicate Styela plicata exposed to Aureoumbra lagunensis and Aureococcus anophagefferens were measured against exposure to a control alga (Tisochrysis lutea) in order to determine its potential use as a bioremediator against these harmful algal blooms (HABs). In addition, whether S. plicata might serve as a vector of HABs was studied by culturing fecal deposits. Short-term exposure to HABs significantly reduced FR, whereas long-term exposure indicates comparable cell removal compared to the control. Vector potential of S. plicata was inconclusive. Results warrant further research to determine whether S. plicata can acclimate or respond to HAB conditions over time.
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Date Issued
2015
PURL
http://purl.flvc.org/fau/fd/FA00004513
Subject Headings
Algal blooms -- Florida -- Indian River Lagoon, Cyanobacterial blooms -- Toxicology, Estuarine ecology, Indian River Lagoon (Fla.) -- Environmental aspects, Marine bioremediation, Marine ecology, Marine pollution, Water quality biological assessment
Format
Document (PDF)
Comparative ecophysiology of bloom-forming macroalgae in the Indian River Lagoon, Florida
Title
Comparative ecophysiology of bloom-forming macroalgae in the Indian River Lagoon, Florida: Ulva lactuca (Chlorophyta), Hypnea musciformis, and Gracilaria tikvahiae (Rhodophyta).
Creator
Vlaming, Lisa N.A., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
Macroalgal blooms are responses to nutrient enrichment in shallow seagrass ecosystems like the Indian River Lagoon (IRL), Florida. Little is known about nitrogen (N) and phosphorus (P) limitation or the importance of morphological/physiological characteristics of bloom-forming macroalgae (Ulva lactuca, Hypnea musciformis, and Gracilaria tikvahiae) in the IRL. We hypothesized: 1) all species would proliferate in nutrient-rich Titusville, 2) opportunistic U. lactuca would dominate, 3) Rapid...
Show moreMacroalgal blooms are responses to nutrient enrichment in shallow seagrass ecosystems like the Indian River Lagoon (IRL), Florida. Little is known about nitrogen (N) and phosphorus (P) limitation or the importance of morphological/physiological characteristics of bloom-forming macroalgae (Ulva lactuca, Hypnea musciformis, and Gracilaria tikvahiae) in the IRL. We hypothesized: 1) all species would proliferate in nutrient-rich Titusville, 2) opportunistic U. lactuca would dominate, 3) Rapid Light Curves (RLCs) would assess nutrient status, and 4) nutrient concentrations would regulate growth more than N:P ratios. Field studies showed rapid biomass doubling times of 2 days (U. lactuca; November 2012) in urbanized Titusville. RLCs in a guano-enriched island off Big Pine Key (BPK) and Titusville (Ulva spp.) were similar due to P-saturation. Laboratory studies showed three-fold higher RLCs and two-fold faster growth at high nutrient concentrations of N and P. Reductions of both N and P will be required to moderate future blooms.
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Date Issued
2013
PURL
http://purl.flvc.org/fcla/dt/3361257
Subject Headings
Marine algae, Marine algae, Ecophysiology, Marine algae, Adaptation, Algal blooms
Format
Document (PDF)