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Articles 1291 - 1320 of 1425
Full-Text Articles in Marine Biology
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: January 1995, Charles G. Messing, Richard E. Dodge
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: January 1995, Charles G. Messing, Richard E. Dodge
Marine & Environmental Sciences Faculty Reports
This report documents the January 1995 monitoring of benthic macroinvertebrate assemblages in the Port Everglades Southport turning basin vicinity and adjacent areas of John U. Lloyd State Recreation Area. This is the eighth monitoring effort of the series carried out by Nova Southeastern University Oceanographic Center. Collections were made between 13 and 25 January 1995.
A Preliminary Study Of Fish Recruitment To "Reefball"Artificial Reefs In Shallow And Deep Water, Richard E. Spieler
A Preliminary Study Of Fish Recruitment To "Reefball"Artificial Reefs In Shallow And Deep Water, Richard E. Spieler
Marine & Environmental Sciences Faculty Reports
No abstract provided.
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: August 1994 [Interim Report], Charles G. Messing, Richard E. Dodge
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: August 1994 [Interim Report], Charles G. Messing, Richard E. Dodge
Marine & Environmental Sciences Faculty Reports
This report documents the August 1994 monitoring of benthic macroinvertebrate assemblages in the Port Everglades Southport turning basin vicinity and adjacent areas of John U. Lloyd State Recreation Area. This is the seventh monitoring effort of the series carried out by Nova Southeastern University Oceanographic Center. Grab samples were taken chiefly during the first two weeks of August. Hand collections and most crab survey stations were delayed until the first half of September (with three crab stations taken on 5 October). This is an interim report. Nemertine and annelid worms and a few groups of crustaceans have not yet been …
Tissue Damage In Scleractinian And Alcyonacean Corals Due To Experimental Exposure To Sedimentation, Bernhard Riegl, Jonathan P. Bloomer
Tissue Damage In Scleractinian And Alcyonacean Corals Due To Experimental Exposure To Sedimentation, Bernhard Riegl, Jonathan P. Bloomer
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Four South African scleractinian corals (Favia favus, Favites pentagona, Platygyra daedalea and Gyrosmilia interrupta) and four alcyonacean corals (Lobophytum depressum, Lobophytum venustum, Sinularia dura and Sinularia leptoclados) were experimentally exposed to high sedimentation conditions in the laboratory during a period of six weeks. Experimental sedimentation corresponded to the highest measured sedimentation levels on South African coral reefs, being 200 mg cm-2h-l. Corals were monitored for tissue necroses and bleaching during the course of the experiment and histological sections were prepared after the termination of the experiment. During the experiment, tissue necroses appeared earlier and more frequently in alcyonacea than in …
Is Coral Community Structure Linked To Damage Susceptibility? A Case Study From South Africa, Bernhard Riegl, Peter A. Cook
Is Coral Community Structure Linked To Damage Susceptibility? A Case Study From South Africa, Bernhard Riegl, Peter A. Cook
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Africa's southernmost coral communities are situated in northern Natal, South Africa (27°50' S), within the Maputaland and St. Lucia Marine Reserves. Growing concern about the possible impact of recreational acti vities on the health of the coral ecosystem prompted the present study on the structure and health of the reefs. Coral community studies by means of line transects identified three basic coral community types, which correlated with the geomorphology of the sandstone outcrops on which corals grew. 1) Fossil dunes were dominated by alcyonacea in depths between 8 and 24 m. 2) Flat outcrops between 18 and 24 m depth …
Winter 1995, Nsu Oceanographic Center
Fall 1995, Nsu Oceanographic Center
Taphonomy Of Isocrinid Stalks: Influence Of Decay And Autotomy, Tomasz K. Baumiller, Ghislaine Llewellyn, Charles G. Messing, William I. Ausich
Taphonomy Of Isocrinid Stalks: Influence Of Decay And Autotomy, Tomasz K. Baumiller, Ghislaine Llewellyn, Charles G. Messing, William I. Ausich
Marine & Environmental Sciences Faculty Articles
Stalks of isocrinid crinoids are differentiated into cirri-bearing columnals (nodals) and columnals lacking cirri (internodals). This skeletal differentiation allowed us to test whether stalk fragmentation is random or whether it occurs preferentially at a specific articulation. Our analyses indicate that the patterns of fragmentation in multicolumnal segments of extant isocrinids collected by submersible, by dredging, and in sediment samples, as well as those found as fossils, are nonrandom. The preferred plane of fragmentation corresponds to the synostosis, the articulation between a nodal and the internodal distal to it. In isocrinids this articulation has a characteristic morphology and is the site …
Evaluation Of A Novel Material For Recycling Tires Into Artificial Reefs - Final Report, Richard E. Spieler
Evaluation Of A Novel Material For Recycling Tires Into Artificial Reefs - Final Report, Richard E. Spieler
Marine & Environmental Sciences Faculty Reports
The purpose of this study was to evaluate, from a biological perspective, a tire-concrete aggregate which uses tire shreds mixed into concrete, as a suitable reef building material. Evaluation consisted of comparing the biological assemblages associated with tire-aggregate reefs to standard gravel-concrete reefs of the same design. Four artificial reefs of concrete, tetrahedron modules were placed off Fort Lauderdale, Florida in seven meters of water, two reefs of each type of aggregate. Each reef contains 25 small (1m/side) and 25 large (1.3m/side) tetrahedrons stacked in a random configuration. The reefs were monitored at monthly, or less, intervals for 28 months. …
Alkaline Phosphatase Activity And Phosphorus Limitation In Marine Macroalgae From The Florida Keys And The Bahamas, Christine M. Urnezis
Alkaline Phosphatase Activity And Phosphorus Limitation In Marine Macroalgae From The Florida Keys And The Bahamas, Christine M. Urnezis
HCNSO Student Theses and Dissertations
Anthropogenic nutrient enrichment and coastal eutrophication are a primary threat to the biological integrity of coral reef ecosystems. Macroalgal blooms are one symptom of eutrophication and provide useful 'bioindicators' of the nutrient dynamics associated with the eutrophication process. This study used marine macroalgae to monitor physiological processes associated with eutrophication by comparing the degree of phosphorus (P) limitation in reef and nearshore environments of the highly developed Florida Keys with the relatively pristine Bahamas by measuring enzymatic alkaline phosphatase activity (APA), tissue composition, and water column nutrient concentrations [total nitrogen (TN) and total phosphorus (TP)]. Experimental nutrient enrichment studies were …
Summer 1995, Nsu Oceanographic Center
Spring 1995, Nsu Oceanographic Center
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: January 1994, Charles G. Messing, Richard E. Dodge
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: January 1994, Charles G. Messing, Richard E. Dodge
Marine & Environmental Sciences Faculty Reports
This report documents the January 1994 monitoring of benthic macroinvertebrate assemblages in the Port Everglades Southport turning basin vicinity and adjacent areas of John U. Uoyd State Recreation Area. This is the sixth monitoring effort of the series carried out by Nova Southeastern University Oceanographic Center. Sampling was carried out chiefly during 8- 25 January. Hand collections and a few crab survey stations were delayed until 16-25 February due totides and weather.
Parameterization Of The Cool Skin Of The Ocean And Of The Air-Ocean Gas Transfer On The Basis Of Modeling Surface Renewal, Alexander Soloviev, Peter Schlüssel
Parameterization Of The Cool Skin Of The Ocean And Of The Air-Ocean Gas Transfer On The Basis Of Modeling Surface Renewal, Alexander Soloviev, Peter Schlüssel
Marine & Environmental Sciences Faculty Articles
Heat and gas transport in molecular sublayers at the air-sea interface is governed by similar laws. A model of renewal type based on the physics of molecular sublayers allows the derivation of a parameterization of the temperature difference across the cool skin of the ocean and of the coefficient of the direct air-sea gas transfer. The surface Richardson number controls the transition from convective instability to wind-induced instability (“rollers” on breaking wavelets) and the Keulegan number controls the transition from the regime of rollers to long-wave breaking. A critical value of the surface Richardson number and of a nondimensional constant …
Decade-Scale Trend In Sea Water Salinity Revealed Through Δ18o Analysis Of Montastraea Annularis Annual Growth Bands, Robert B. Halley, Peter Koenraad Swart, Richard E. Dodge, Harold J. Hudson
Decade-Scale Trend In Sea Water Salinity Revealed Through Δ18o Analysis Of Montastraea Annularis Annual Growth Bands, Robert B. Halley, Peter Koenraad Swart, Richard E. Dodge, Harold J. Hudson
Marine & Environmental Sciences Faculty Articles
Stable oxygen isotope ratios (δ18O) of coral skeletons are influenced by ambient water temperature and by the oxygen isotope ratio in the surrounding sea water, which, in turn, is linked to evaporation (salinity) and precipitation. To investigate this relationship more thoroughly, we collected hourly temperature data from the Hen and Chickens Reef in the Florida Keys between 1975 and 1988 and compared them to the δ18O of Montastraea annularis skeleton that grew during the same interval. To ensure that we obtained the correct oxygen isotopic range in the skeleton we typically sampled the coral at a …
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: August 1993 (Including A Summary Of Previous Survey Results, 1991-1993), Charles G. Messing, Richard E. Dodge
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: August 1993 (Including A Summary Of Previous Survey Results, 1991-1993), Charles G. Messing, Richard E. Dodge
Marine & Environmental Sciences Faculty Reports
This report documents the August 1993 monitoring of benthic macroinvertebrate assemblages in the Port Everglades Southport turning basin vicinity and adjacent areas of John U. Lloyd State Recreation Area. This is the fifth monitoring effort of the series carried out by Nova University Oceanographic Center. Sampling was carried out chiefly during 2-12 August. Hand collections and a few crab survey stations were delayed until 2-12 October primarily because of weather and tidal constraints.
Winter 1994, Nsu Oceanographic Center
Summer 1994, Nsu Oceanographic Center
Evaluation Of A Novel Material For Recycling Tires Into Artificial Reefs Second Year Annual Report, Richard E. Spieler
Evaluation Of A Novel Material For Recycling Tires Into Artificial Reefs Second Year Annual Report, Richard E. Spieler
Marine & Environmental Sciences Faculty Reports
Four artificial reefs were placed off Broward County in 20 ft of water on 29 March 1993. The reefs were constructed of concrete aggregate tetrahedrons. Each reef contains 25 small ( 3ft/side) and 25 large (4 ft/side) tetrahedrons in a random configuration. Two types of concrete aggregate were used . One is a tire-concrete aggregate which uses tire shreds mixed into the concrete; the other is a standard gravel-concrete aggregate. Two reefs are composed of each type of aggregate . The purpose of the study is to evaluate the tire aggregate, in comparison to standard concrete, as a suitable reef …
Fall 1994, Nsu Oceanographic Center
Spring 1994, Nsu Oceanographic Center
Compositional And Taphonomic Variations In Modern Crinoid-Rich Sediments From The Deep-Water Margin Of A Carbonate Bank, Ghislaine Llewellyn, Charles G. Messing
Compositional And Taphonomic Variations In Modern Crinoid-Rich Sediments From The Deep-Water Margin Of A Carbonate Bank, Ghislaine Llewellyn, Charles G. Messing
Marine & Environmental Sciences Faculty Articles
Multivariate analyses of the coarse-grained fraction (>2 mm) of sediments accumulating in deep water (419-434 m) along the western margin of the Little Bahama Bank reveal identifiable, small-scale compositional and taphonomic variations among local subhabitats (ridge crest, slope, foreslope, base of slope, pavements and scour pit) separated by meters to tens of meters. Bulk composition varies between planktic-(crest and slope) and lithic-dominated (pavements, scour pit) sediments. Local macrobenthic skeletal components also vary significantly among subhabitats, but are commonly dominated by echinoid and crinoid material; crinoid columnals contribute 9-52% of the coarse skeletal component of 17 sediment samples considered. Distributional …
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: January 1993: Final Version, Charles G. Messing, Richard E. Dodge
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: January 1993: Final Version, Charles G. Messing, Richard E. Dodge
Marine & Environmental Sciences Faculty Reports
This report documents the January 1993 monitoring of benthic macroinvertebrate assemblages in the Port Everglades Southport turning basin vicinity and adjacent areas of John U. Lloyd State Recreation Area. This is the fourth monitoring effort of the series carried out by Nova University Oceanographic Center. Sampling was carried out during 4-15 January and 1-22 February 1993, the extended period due chiefly to weather and tidal constraints. Comparison with results of preceding survey efforts will be included in the annual report following the August 1993 survey. The section treating the Ponar grab samples is now complete: identifications of the remaining groups …
Second Post-Construction Report: 1992 Biological Monitoring Of The Hollywood-Hallandale Beach Renourishment. Draft, Richard E. Dodge, Walter Goldberg, Steven C. Hess, Charles G. Messing
Second Post-Construction Report: 1992 Biological Monitoring Of The Hollywood-Hallandale Beach Renourishment. Draft, Richard E. Dodge, Walter Goldberg, Steven C. Hess, Charles G. Messing
Marine & Environmental Sciences Faculty Reports
In 1990. Nova University (Contractor) with Coral Reef Associates and ERM South (Subcontractors) was awarded a contract to provide biological monitoring services for the Hollywood Hallandale Beach Renourishment Project. A notice to proceed for the initial biological monitoring (Pre-construction) was issued in September. 1990. Pre-construction field monitoring took place in October. 1990. Renourishment dredging began in April and ended August, 1991. Approximately 1.2 million cubic yards of sediment were removed and subsequently emplaced on 5 miles of shoreline. The first post-construction monitoring took place in October. 1991. On August 24.1992 the eye of Hurricane Andrew passed some 30 miles to …
Diet And Feeding Habits Of The Southern Stingray Dasyatis Americana In The Central Bahamas, David S. Gilliam, K. M. Sullivan
Diet And Feeding Habits Of The Southern Stingray Dasyatis Americana In The Central Bahamas, David S. Gilliam, K. M. Sullivan
Marine & Environmental Sciences Faculty Articles
No abstract provided.
Emergence Periodicity Of Caretta Caretta In Broward County, Florida, 1990, William E. Margolis, Curtis M. Burney
Emergence Periodicity Of Caretta Caretta In Broward County, Florida, 1990, William E. Margolis, Curtis M. Burney
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
No abstract provided.
Trends In The Spatial Distribution Of Sea Turtle Activity On An Urban Beach (1981-1992), Catherine A. Mattison, Curtis M. Burney, Louis Fisher
Trends In The Spatial Distribution Of Sea Turtle Activity On An Urban Beach (1981-1992), Catherine A. Mattison, Curtis M. Burney, Louis Fisher
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
No abstract provided.
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: August 1992 (With A Summary Of The August 1991 And January 1992 Surveys), Charles G. Messing, Richard E. Dodge
Port Everglades Macroinvertebrate Monitoring: Monitoring Of Benthic Macroinvertebrate Assemblages At The Southport Turning Basin And Adjacent Areas Of John U. Lloyd State Recreation Area: August 1992 (With A Summary Of The August 1991 And January 1992 Surveys), Charles G. Messing, Richard E. Dodge
Marine & Environmental Sciences Faculty Reports
This report documents the August 1992 monitoring of benthic macroinvertebrate assemblages in the Pon Everglades Southpon turning basin vicinity and adjacent areas of John U. Lloyd State Recreation Area. This is the third monitoring effort of the series carried out by Nova University Oceanographic Center. Sampling was carried out chiefly during the first two weeks of August 1992. Hurricane Andrew and its aftermath resulted in delays in sampling at several sites and in analyzing data. A two-week postponement in submission deadline was requested and granted. An additional postponement, to 31 January 1992, was requested due to a move at the …
Skeletal Structural Basis Of Density Banding In The Reef Coral Montastrea Annularis, Richard E. Dodge, Alina Szmant-Froelich, R. Garcia, Peter K. Swart, A. Forester, J. J. Leder
Skeletal Structural Basis Of Density Banding In The Reef Coral Montastrea Annularis, Richard E. Dodge, Alina Szmant-Froelich, R. Garcia, Peter K. Swart, A. Forester, J. J. Leder
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Density banding in coral skeletons can provide for reconstruction of the coral's growth en- vironment over long periods. The physical differ- ences between low and high density portions of a skeletal band are not well understood. The skeletal architecture of M. annularis from Southeast Flor- ida, the Florida Keys, St. Croix, the Bahamas, and Mexico was compared in X-ray revealed high den- sity (HD), low density (LD), and stress HD bands. Density changes arose from differences in the size, but not spacing, of exothecal structural elements (horizontal dissepiments and vertical costae). En- dothecal architecture size (e.g., columella, dissepi- ments, septa) …
Fall 1993, Nsu Oceanographic Center