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Temporal and spatial variation in habitat characteristics of tilefish (Lopholatilus chamaeleonticeps) off the east coast of Florida
Title
Temporal and spatial variation in habitat characteristics of tilefish (Lopholatilus chamaeleonticeps) off the east coast of Florida.
Creator
Able, Kenneth W., Grimes, Churchill B., Jones, Robert S., Twichell, David C., Harbor Branch Oceanographic Institute
Date Issued
1993
PURL
http://purl.flvc.org/FCLA/DT/3172857
Subject Headings
Tilefish, Marine sediments --Florida, Carbonates, Sidescan sonar, Oceanographic submersibles
Format
Document (PDF)
Isolation and characterization of chlorophyll and carotenoids in Florida Bay: Phytoplankton, microphytobenthos and sediments
Title
Isolation and characterization of chlorophyll and carotenoids in Florida Bay: Phytoplankton, microphytobenthos and sediments.
Creator
Loitz, Joseph William, Florida Atlantic University, Louda, J. William
Abstract/Description
An analysis of the waters, microphytobenthos, and carbonate marl sediments of Florida Bay was performed using ion-paired RP-HPLC-PDA for chemotaxonomic characterization of past and present photoautotrophic, communities. Application of regression formulae was determined to be applicable for the waters, microphytobenthos, and surficial sediments (0--5 cm) of Florida Bay using chemotaxonomic principles. Loss of chemotaxonomically important pigments with depth prevented similar application in...
Show moreAn analysis of the waters, microphytobenthos, and carbonate marl sediments of Florida Bay was performed using ion-paired RP-HPLC-PDA for chemotaxonomic characterization of past and present photoautotrophic, communities. Application of regression formulae was determined to be applicable for the waters, microphytobenthos, and surficial sediments (0--5 cm) of Florida Bay using chemotaxonomic principles. Loss of chemotaxonomically important pigments with depth prevented similar application in deeper strata (>5 cm), however, past oxic and anoxic trends could be determined. Sedimentary alteration of pigments are characterized by: rapid conversion of chlorophylls-alpha and bacteriochlorophylls-alpha to their respective pheophytins-alpha, creation of a 'carotenoid diol-cluster', equilibrium isomerization of beta-carotene (15-cis and trans), and rapid conversion of pyropheophorbide-alpha to cyclopheophorbide-alpha. An abundant presence of pyropheophorbide-alpha steryl/hopanoid esters and an unusual relationship between organic carbon and water content providing the sediments with polymeric characteristics were also found.
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Date Issued
1999
PURL
http://purl.flvc.org/fcla/dt/15734
Subject Headings
Marine sediments--Florida--Florida Bay, Carotenoids--Analysis, Chlorophyll--Analysis
Format
Document (PDF)
Analysis of nearshore turbidity plumes using passive multispectral archive satellite data: Interactions of tidal current and bathymetry in Broward County, Florida
Title
Analysis of nearshore turbidity plumes using passive multispectral archive satellite data: Interactions of tidal current and bathymetry in Broward County, Florida.
Creator
DaPrato, Gary Wayne., Florida Atlantic University, Finkl, Charles W.
Abstract/Description
The interaction of tidal currents and bathymetry in the nearshore environment is investigated as an essential component in the study of cross-shore turbidity plumes. Clay and silt-sized grains which comprise a minor portion of natural beaches and artificial fills are modulated through the water column by nearshore currents. Tidal jets and undertow currents are forcing factors in the expansion of circulation currents that carry fine-grained suspended sediments offshore in large mega-plumes....
Show moreThe interaction of tidal currents and bathymetry in the nearshore environment is investigated as an essential component in the study of cross-shore turbidity plumes. Clay and silt-sized grains which comprise a minor portion of natural beaches and artificial fills are modulated through the water column by nearshore currents. Tidal jets and undertow currents are forcing factors in the expansion of circulation currents that carry fine-grained suspended sediments offshore in large mega-plumes. Enhanced contextual coverages from satellite imagery delineating plume morphology show a strong relationship between bathymetry and tidal current. The forces exerted by tidal action and frictions resisting this movement are examined by incorporating techniques of image processing, modeling, and statistical analysis in a GIS database environment. This analysis examines an experimental anisotropic cost distance algorithm that is utilized in the modeling of turbidity plumes to better understand the dispersion of suspended sediments in coastal Broward County.
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Date Issued
1995
PURL
http://purl.flvc.org/fcla/dt/15154
Subject Headings
Remote sensing--Florida--Broward County, Coastal zone management--Florida--Broward County, Marine sediments--Florida, Turbidity currents
Format
Document (PDF)
Sediment phosphorus fractionation in calcium carbonate sediments of northeastern Florida Bay
Title
Sediment phosphorus fractionation in calcium carbonate sediments of northeastern Florida Bay.
Creator
Benz, Robert E., Jr., Florida Atlantic University, Koch, Marguerite
Abstract/Description
Different physiochemical processes control phosphorus storage in subtropical versus temperate estuaries; however, few studies are available on sediment phosphorus storage from the subtropics. In this study, solid-phase phosphorus pools of northeastern Florida Bay's sediments were examined by sequential chemical extractions, separating phosphorus into exchangeable, iron-bound, calcium-bound, and residual organic fractions. Calcium-bound phosphorus was the dominant fraction, accounting for...
Show moreDifferent physiochemical processes control phosphorus storage in subtropical versus temperate estuaries; however, few studies are available on sediment phosphorus storage from the subtropics. In this study, solid-phase phosphorus pools of northeastern Florida Bay's sediments were examined by sequential chemical extractions, separating phosphorus into exchangeable, iron-bound, calcium-bound, and residual organic fractions. Calcium-bound phosphorus was the dominant fraction, accounting for approximately 60% of the total phosphorus and 93% of the inorganic phosphorus. Residual organic phosphorus was the second dominant fraction, accounting for 37% of the total phosphorus. In contrast to calcium-bound and residual organic phosphorus, the concentration of iron-bound phosphorus was low, indicating a limited role of iron in long-term phosphorus storage. The fine-grained carbonate sediments of Florida Bay probably account for the large pool of calcium-bound phosphorus, while the proximity of the mangroves to the northeastern section of the Bay may account for the high residual organic pool of phosphorus.
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Date Issued
2000
PURL
http://purl.flvc.org/fcla/dt/15763
Subject Headings
Water--Phosphorus content, Marine sediments--Florida--Florida Bay, Calcium carbonate, Florida Bay (Fla )--Environmental conditions
Format
Document (PDF)