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Determining The Viability Of Recent Storms As Modern Analogues For North-Central Gulf Of Mexico Paleotempestology Through Sedimentary Analysis And Storm Surge Reconstruction, Joshua Caleb Bregy 2016 University of Southern Mississippi

Determining The Viability Of Recent Storms As Modern Analogues For North-Central Gulf Of Mexico Paleotempestology Through Sedimentary Analysis And Storm Surge Reconstruction, Joshua Caleb Bregy

Master's Theses

The northern Gulf of Mexico has been devastated by recent intense storms. Camille (1969) and Katrina (2005) are two notable hurricanes that made landfall in virtually the same location in Mississippi. However, fully understanding the risks and processes associated with hurricane impacts is impeded by a short and fragmented instrumental record. Paleotempestology could potentially use modern analogues from intense storms in this region to extend the hurricane record back to pre-observational time. Existing empirically based models can back-calculate surge heights over coastal systems as a function of transport distance, particle settling velocity, and gravitational acceleration. We collected cores in a ...


Abundance And Diversity Of Deep-Sea Crustaceans Of Bear Seamount, New England Seamount Chain, Valerie Miranda 2016 Nova Southeastern University

Abundance And Diversity Of Deep-Sea Crustaceans Of Bear Seamount, New England Seamount Chain, Valerie Miranda

HCNSO Ocean Science Jamboree

Bear Seamount (39° 55’ N; 67° 30’ W) is the westernmost peak of extinct undersea volcanoes in the New England Seamount Chain (Moore et al., 2003). It is located on the continental slope off Georges Bank, and is governed by unique environmental factors and currents that may be unlike those of the other seamounts (Moore et al., 2003). Previous cruises to this seamount have been successful in capturing abundant fishes, cephalopods and invertebrates (Moore et al., 2003; Moore et al., 2004; Moore et al., 2008), but only the distribution patterns of the fishes and cephalopods have been examined, leaving a ...


Vision And Bioluminescence In Deep-Sea Crustaceans, Tamara Frank 2016 Nova Southeastern University

Vision And Bioluminescence In Deep-Sea Crustaceans, Tamara Frank

HCNSO Ocean Science Jamboree

Adaptations of the visual systems of deep-sea crustaceans to dim light environments are driven not only by environmental light, but also biologically produced light, or bioluminescence. In the pelagic zone, the relationship is driven, at least in part, by intrinsic bioluminescence. The unusual possession of UV sensitivity, in additional to the expected blue sensitivity, in several species of deep-sea crustaceans appears to be linked to their two modes of bioluminescence. In the benthic zone, the relationship is not so clear. On several NOAA-OER funded research expeditions, electrophysiological studies were conducted on a number of species of decapod crustaceans collected with ...


Monitoring A Problem: Evaluating The Ecological Status Of The Invasive Nile Monitor In Florida And Forecasting Population Expansion Using Computational Gis, Noah Cohen 2016 Nova Southeastern University

Monitoring A Problem: Evaluating The Ecological Status Of The Invasive Nile Monitor In Florida And Forecasting Population Expansion Using Computational Gis, Noah Cohen

HCNSO Ocean Science Jamboree

The state of Florida is an epicenter for the introduction of exotic terrestrial and marine species, often which are attributed to the pet industry. Identifying the threats posed by exotics that may become invasive is critical to manage and protect indigenous species and habitats. One such exotic that is now invasive in Florida is the Nile Monitor (Varanus niloticus). The Nile monitor is a large, predatory lizard native to central and southern Africa that is thought to have been introduced to Florida via both intentional and unintentional releases associated with the exotic pet trade. Since their introduction, Nile monitors have ...


Genomic Assembly Analyses Of Asian Teleost Species Seabass (Lates Calcarifer) And Arowana (Scleropages Formosus), Stephen O'Brien 2016 Nova Southeastern University

Genomic Assembly Analyses Of Asian Teleost Species Seabass (Lates Calcarifer) And Arowana (Scleropages Formosus), Stephen O'Brien

HCNSO Ocean Science Jamboree

The genome assembly and annotation of Asian seabass (Lates calcarifer) , a marine teleost with aquaculture relevance will be described, an initiative of Genome 10K . Though > 500 eukaryotic genome sequences are available in public repositories, the majority are highly fragmented with incomplete assemblies, so considerable effort and resources are often spent to improve their quality. In the present study, PacBio long read sequencing , genetic and optical mapping, and syntenic inference were combined to build a chromosome-length assembly with a contig N50 size over 1 Mb and scaffold N50 size over 25 Mb that span ~90% of the genome was achieved.

The ...


If You Build It, Will They Come? Exploring Enhancements To Artificial Structure For Use In Restoration And Mitigation Applications In The Mexican Caribbean, Kirk Kilfoyle 2016 Nova Southeastern University

If You Build It, Will They Come? Exploring Enhancements To Artificial Structure For Use In Restoration And Mitigation Applications In The Mexican Caribbean, Kirk Kilfoyle

HCNSO Ocean Science Jamboree

A study involving standardized artificial reef modules (ReefballsTM) was conducted in Puerto Morelos, Mexico. The purpose was to explore the use of artificial structure in restoration and mitigation projects in a Caribbean coral reef environment similar to South Florida by applying select experimental treatments hypothesized to accelerate their acquisition of a natural coral reef assemblage. Multiple hypotheses on the progression and interaction between artificial structure and the resulting fish, coral, algal, and non-coral invertebrate assemblages were examined. Each of 40 reefball modules received one of 4 treatments (10 modules/treatment): invertebrate substrate pads, coral transplants, settlement plates, or control. Following ...


On The Variability Of Pacific Ocean Tides At Seasonal To Decadal Time Scales: Observed Vs Modelled, Adam Thomas Devlin 2016 Portland State University

On The Variability Of Pacific Ocean Tides At Seasonal To Decadal Time Scales: Observed Vs Modelled, Adam Thomas Devlin

Dissertations and Theses

Ocean tides worldwide have exhibited secular changes in the past century, simultaneous with a global secular rise in mean sea level (MSL). The combination of these two factors contributes to higher water levels, and may increase threats to coastal regions and populations over the next century. Equally as important as these long-term changes are the short-term fluctuations in sea levels and tidal properties. These fluctuations may interact to yield locally extreme water level events, especially when combined with storm surge. This study, presented in three parts, examines the relationships between tidal anomalies and MSL anomalies on yearly and monthly timescales ...


West Florida Shelf Connectivity: An Exploratory Study, Amanda Sue Reinert 2016 University of South Florida

West Florida Shelf Connectivity: An Exploratory Study, Amanda Sue Reinert

Graduate Theses and Dissertations

This Thesis explores the connectiveness of the West Florida Shelf’s various areas of economic and ecological importance by considering five case studies of varying dynamic forcing influences and time. The advection of water about the shelf moves nutrients and has a direct impact on the shelf’s ecology and the determination of whether or not the shelf will be oligotrophic at any given time or location. The case studies are analyzed both quantitatively and qualitatively after quasi-isopycnal particle trajectory calculations are completed for each. The findings support a combination of local and deep-ocean forcing being ideal for the maximum ...


Variability In The Carbon Storage Of Seagrass Habitats And Its Implications For Global Estimates Of Blue Carbon Ecosystem Service [Dataset], Paul S. Lavery, Miguel-Angel Mateo, Oscar Serrano, Mohammad Rozaimi 2016 Edith Cowan University

Variability In The Carbon Storage Of Seagrass Habitats And Its Implications For Global Estimates Of Blue Carbon Ecosystem Service [Dataset], Paul S. Lavery, Miguel-Angel Mateo, Oscar Serrano, Mohammad Rozaimi

Research Datasets

The database compiles published data (in Lavery et al. 2013, PLoS ONE 8(9): e73748. doi:10.1371/journal.pone.0073748) on biogeochemical variables (organic matter, organic carbon and CO3 contents, and stable carbon isotope signatures of the organic carbon) in sediment core from seagrass meadows in Australia. The cores studied were up to 29 cm long, and ecompass tropical, subtropical and temperate seagrass meadows in intertidal and subtidal habitats. Enquiries about the dataset may be sent to Paul Lavery p.lavery@ecu.edu.au.


Surface Chlorophyll Variability In The Drake Passage Region Of The Southern Ocean, Joseph C. Gradone 2016 University of Colorado, Boulder

Surface Chlorophyll Variability In The Drake Passage Region Of The Southern Ocean, Joseph C. Gradone

Undergraduate Honors Theses

The Southern Ocean, the ocean surrounding the Antarctic continent, supports a diverse array of biological species and unique food webs. Given the important role of phytoplankton in Southern Ocean food webs and their influence on the global carbon reservoir, it is of interest to know whether their abundance has changed over time. Chlorophyll is a pigment present in all photosynthesizing phytoplankton that can be used to estimate the biomass and productivity of phytoplankton at a given time and location. This study analyzes surface chlorophyll variability in the Drake Passage region of the Southern Ocean using underway fluorometer derived chlorophyll from ...


Impact Of Mooring Activities On Carbon Stocks In Seagrass Meadows [Dataset], Oscar Serrano, Radhiyah Ruhon, Paul S. Lavery, Gary A. Kendrick, Sharyn Hickey, Pere Masque, Ariane Arias-Ortiz, Andy Steven, Carlos M. Duarte 2016 Edith Cowan University

Impact Of Mooring Activities On Carbon Stocks In Seagrass Meadows [Dataset], Oscar Serrano, Radhiyah Ruhon, Paul S. Lavery, Gary A. Kendrick, Sharyn Hickey, Pere Masque, Ariane Arias-Ortiz, Andy Steven, Carlos M. Duarte

Research Datasets

The database compiles published data (in Serrano et al. 2016, Scientific Reports, in press) on biogeochemical characteristics (density, organic carbon, calcium carbonate, stable carbon isotopes and sediment grain size) of sediments underneath seagrass meadows and adjacent un-vegetated patches after mooring disturbances in Rottnest Island (Perth, Western Australia). The dataset compiles data on biogeochemical sediment characteristics for a total of 16 cores, 50 cm-long (4 cores from seagrass meadows and 4 cores from adjacent bare sediments at Thompson Bay, and 4 cores from seagrass meadows and 4 cores from adjacent bare sediments at Stark Bay). Enquiries about the dataset may be ...


Seagrass Sediments Reveal The Long-Term Deterioration Of An Estuarine Ecosystem [Dataset], Oscar Serrano, Paul S. Lavery, Pere Masque, Karina Inostroza, James Bongiovanni, Carlos Duarte 2016 Edith Cowan University

Seagrass Sediments Reveal The Long-Term Deterioration Of An Estuarine Ecosystem [Dataset], Oscar Serrano, Paul S. Lavery, Pere Masque, Karina Inostroza, James Bongiovanni, Carlos Duarte

Research Datasets

The database compiles published data (in Serrano et al. 2016, Global Change Biology, doi:10.1111/gcb.13195) on temporal trends in biogeochemical variables in the Posidonia australis sediment core from Oyster Harbour, Western Australia. The core studied encompasses the last 500 years of history. Data on dry bulk density, carbonate content, sedimentso.serranogras@ecu.edu.au.


Individual And Population-Level Responses To Ocean Acidification, Ben P. Harvey, Niall J. McKeown, Samuel P. Rastrick, Camilla Bertolini, Andy Foggo, Helen Graham, Jason M. Hall-Spencer, Marco Milazzo, Paul W. Shaw, Daniel P. Small, Philippa J. Moore 2016 Edith Cowan University

Individual And Population-Level Responses To Ocean Acidification, Ben P. Harvey, Niall J. Mckeown, Samuel P. Rastrick, Camilla Bertolini, Andy Foggo, Helen Graham, Jason M. Hall-Spencer, Marco Milazzo, Paul W. Shaw, Daniel P. Small, Philippa J. Moore

ECU Publications Post 2013

Ocean acidification is predicted to have detrimental effects on many marine organisms and ecological processes. Despite growing evidence for direct impacts on specific species, few studies have simultaneously considered the effects of ocean acidification on individuals (e.g. consequences for energy budgets and resource partitioning) and population level demographic processes. Here we show that ocean acidification increases energetic demands on gastropods resulting in altered energy allocation, i.e. reduced shell size but increased body mass. When scaled up to the population level, long-term exposure to ocean acidification altered population demography, with evidence of a reduction in the proportion of females ...


Application Of A Predator–Prey Overlap Metric To Determine The Impact Of Sub-Grid Scale Feeding Dynamics On Ecosystem Productivitye, Adam Greer, C. Woodson 2015 University of Georgia

Application Of A Predator–Prey Overlap Metric To Determine The Impact Of Sub-Grid Scale Feeding Dynamics On Ecosystem Productivitye, Adam Greer, C. Woodson

Adam T. Greer

Marine ecosystem models assume spatially homogeneous population dynamics at sub-grid scale resolution, despite evidence that marine systems are highly structured on fine scales. This structuring can influence the predator–prey interactions driving trophic transfer and thereby overall ecosystem production. Here we apply a statistic, the AB ratio (ζAB), to quantify increased predator production due to fine-scale overlap with its prey. We calculated ζAB from available literature sources (spatial observations of predator and prey) and from data obtained with a towed plankton imaging system, demonstrating that organisms from a range of trophic levels and oceanographic regions tended to overlap ...


Macrobenthic Communities In The Northern Gulf Of Mexico Hypoxic Zone: Testing The Pearson-Rosenberg Model, Shivakumar Shivarudrappa 2015 The University of Southern Mississippi

Macrobenthic Communities In The Northern Gulf Of Mexico Hypoxic Zone: Testing The Pearson-Rosenberg Model, Shivakumar Shivarudrappa

Dissertations

The Pearson and Rosenberg (P-R) conceptual model of macrobenthic succession was used to assess the impact of hypoxia (dissolved oxygen [DO] ≤ 2 mg/L) on the macrobenthic community on the continental shelf of northern Gulf of Mexico for the first time. The model uses a stress-response relationship between environmental parameters and the macrobenthic community to determine the ecological condition of the benthic habitat. The ecological significance of dissolved oxygen in a benthic habitat is well understood. In addition, the annual recurrence of bottom-water hypoxia on the Louisiana/Texas shelf during summer months is well documented.

The P-R model illustrates the ...


A Statistical Model For The Prediction Of Dissolved Oxygen Dynamics And The Potential For Hypoxia In The Mississippi Sound And Bight, Andreas Moshogianis 2015 University of Southern Mississippi

A Statistical Model For The Prediction Of Dissolved Oxygen Dynamics And The Potential For Hypoxia In The Mississippi Sound And Bight, Andreas Moshogianis

Master's Theses

Hypoxia events occur when dissolved oxygen concentrations fall below the minimum threshold (dissolved oxygen concentrations < 2 mg O2 L-1) necessary to avoid respiratory distress among aquatic organisms. In the Mississippi Sound and Bight, hypoxia is most prevalent from late-spring through late summer. Since hypoxia events can have dramatic effects on coastal fisheries, the spatial and temporal magnitude of hypoxia presents a clear threat to the productive fisheries in the northern Gulf of Mexico. Long-term hydrographic data were collected from eight sampling stations on a monthly basis from January 2009 to December 2011 along a cross-shelf transect from the mouth of Bay ...


Iodine-131: Measurement And Application Of A Novel Tracer In Lake Michigan, Michael Patrick Montenero 2015 University of Wisconsin-Milwaukee

Iodine-131: Measurement And Application Of A Novel Tracer In Lake Michigan, Michael Patrick Montenero

Theses and Dissertations

Iodine-131 is a short-lived (half-life=8.0233 days), gamma emitting, radiopharmaceutical that, when excreted by patients, enters aquatic systems via sewage effluent discharged from water reclamation facilities (WRFs). Here, I report on 131I activities in the nearshore of southwest Lake Michigan in the vicinity of Milwaukee, Wisconsin. This is the first report on 131I activity in any of the Great Lakes of North America.

The flux of 131I from Milwaukee’s two WRFs was monitored from July 2013 to December 2014. Mean discharge of 131I from the Jones Island WRF was (0.664 ± 0.012)×108 Bq d-1 (mean effluent ...


Models Describing The Sea Level Rise In Key West, Florida, Karm-Ervin Jean 2015 Florida International University

Models Describing The Sea Level Rise In Key West, Florida, Karm-Ervin Jean

FIU Electronic Theses and Dissertations

Lately, we have been noticing an unusual rise in the sea level near many Floridian cities. By 2060, scientists believe that the sea level in the city of Key West will reach between 22.86 to 60.96 centimeters (Strauss et al. 2012). The consequences of sea level rise are unpleasant by gradually tearing away our beaches and natural resources, destroying our homes and businesses, etc. Definitively, a continual increase of the sea level will affect everyone either directly or indirectly.

In this study, the sea level measurements of four Floridian coastal cities (including Key West) are collected in order ...


Understanding Climate Change And Sea Level: A Case Study Of Middle School Student Comprehension And An Evaluation Of Tide Gauges Off The Panama Canal In The Pacific Ocean And Caribbean Sea, Juan Carlos Millan-Otoya 2015 University of South Florida

Understanding Climate Change And Sea Level: A Case Study Of Middle School Student Comprehension And An Evaluation Of Tide Gauges Off The Panama Canal In The Pacific Ocean And Caribbean Sea, Juan Carlos Millan-Otoya

Graduate Theses and Dissertations

The present study had two main objectives. The first was to determine the degree of understanding of climate change, sea level and sea level rise among middle school students. Combining open-ended questions with likert-scaled questions, we identified student conceptions on these topics in 86 students from 7th and 8th grades during 2012 and 2013 before and after implementing a Curriculum Unit (CU). Additional information was obtained by adding drawings to the open-ended questions during the second year to gauge how student conceptions varied from a verbal and a visual perspective. Misconceptions were identified both pre- and post-CU among all the ...


8000 Years Of Environmental Evolution Of Barrier–Lagoon Systems Emplaced In Coastal Embayments (Nw Iberia), Rita González-Villanueva, Marta Pérez-Arlucea, Susana Costas, Roberto Bao, Xose L. Otero, Ronald J. Goble 2015 Universidade de Vigo, Spain

8000 Years Of Environmental Evolution Of Barrier–Lagoon Systems Emplaced In Coastal Embayments (Nw Iberia), Rita González-Villanueva, Marta Pérez-Arlucea, Susana Costas, Roberto Bao, Xose L. Otero, Ronald J. Goble

Papers in the Earth and Atmospheric Sciences

The rocky and indented coast of NW Iberia is characterized by the presence of highly valuable and vulnerable, small and shallow barrier– lagoon systems structurally controlled. The case study was selected to analyse barrier–lagoon evolution based on detailed sedimentary architecture, chronology, geochemical and biological proxies. The main objective is to test the hypothesis of structural control and the significance at regional scale of any highenergy event recorded. This work is also aimed at identifying general patterns and conceptualizing the formation and evolution of this type of coastal systems. The results allowed us to establish a conceptual model of Holocene ...


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