Marine Biology Commons^™

Tidal Hydrodynamics Under Future Sea Level Rise And Coastal Morphology In The Northern Gulf Of Mexico, Davina L. Passeri, Scott C. Hagen, Nathaniel G. Plant, Matthew V. Bilskie, Stephen C. Medeiros, Karim Alizad

Faculty Publications

This study examines the integrated influence of sea level rise (SLR) and future morphology on tidal hydrodynamics along the Northern Gulf of Mexico (NGOM) coast including seven embayments and three ecologically and economically significant estuaries. A large-domain hydrodynamic model was used to simulate astronomic tides for present and future conditions (circa 2050 and 2100). Future conditions were simulated by imposing four SLR scenarios to alter hydrodynamic boundary conditions and updating shoreline position and dune heights using a probabilistic model that is coupled to SLR. Under the highest SLR scenario, tidal amplitudes within the bays increased as much as 67% (10.0 …

Telonicher Marine Laboratory, Hsu Telonicher Marine Laboratory

Newsletters

No abstract provided.

White Shark Research Report Q And A - Based On Fisheries Research Report 273: Evaluation Of Passive Acoustic Telemetry Approaches For Monitoring And Mitigating Shark Hazards Off The Coast Of Western Australia, Department Of Fisheries, Western Australia

Fisheries Research Reports

This document is a Question and Answer summary based on Fisheries Research Report 273: Evaluation of passive acoustic telemetry approaches for monitoring and mitigating shark hazards off the coast of Western Australia.

Shark attacks are rare but traumatic events that involve complex and dynamic interactions between sharks’ ecology and human demographics and behaviours. To better understand the biological and ecological factors contributing to the series of incidents of white shark (Carcharodon carcharias) attacks off Western Australia, sharks were fitted with acoustic transmitters (‘tags’) that emit unique identification codes every 50 to 150 seconds. Tagged sharks were monitored by up to …

Experimental Demonstration Of An Allee Effect In Microbial Populations, Rajreni B. Kaul, Andrew M. Kramer, Fred C. Dobbs, John M. Drake

OES Faculty Publications

Microbial populations can be dispersal limited. However, microorganisms that successfully disperse into physiologically ideal environments are not guaranteed to establish. This observation contradicts the Baas-Becking tenet: ‘Everything is everywhere, but the environment selects’. Allee effects, which manifest in the relationship between initial population density and probability of establishment, could explain this observation. Here, we experimentally demonstrate that small populations of Vibrio fischeri are subject to an intrinsic demographic Allee effect. Populations subjected to predationby the bacterivore Cafeteria roenbergensis display both intrinsic and extrinsic demographic Allee effects. The estimated critical threshold required to escape positive densitydependence is around 5, 20 or …

Bridge Over Troubled Waters: A Synthesis Session To Connect Scientific And Decision Making Sectors, Kaitlin Goldsmith, Elise F. Granek, Amy Lubitow, Michael Papenfus

Environmental Science and Management Faculty Publications and Presentations

Lack of access to relevant scientific data has limited decision makers from incorporating scientific information into their management and policy schemes. Yet, there is increasing interest among decision makers and scientists to integrate coastal and marine science into the policy and management process. Strategies designed to build communication between decision makers and scientists can be an effective means to disseminate and/or generate policy relevant scientific information. Here researchers develop, test, and present a workshop model designed to bridge the gap between coastal and marine decision makers and scientists. Researchers identify successful components of such a workshop as well as areas …

The Function Of Second-Order Male Alliances In St. Johns River Dolphins (Tursiops Truncatus), Arien D. Widrick

UNF Undergraduate Capstone Projects and Honors Theses

Bottlenose dolphins (Tursiops truncatus) have a sexually segregated fission-fusion society, in which males and females form different types of social groups for different purposes. Social interactions among dolphins are frequent, and group composition changes just as often. Male-male association patterns reveal the formation of alliances, which range in complexity. Recently, second-order alliance formation was confirmed in the St. Johns River, but the function of these alliances is unknown. To investigate their function, this research analyzes the seasonality of first and second-order alliance formation, and whether female presence plays a role. It was hypothesized that higher level male alliances form in …

Seagrass Community Change At Three High Risk Ports In The Great Barrier Reef World Heritage Area From 2005 To 2014, Celeste Venolia

Independent Study Project (ISP) Collection

Seagrass meadows are extremely valuable and dynamic ecosystems currently facing pressure from anthropogenic disturbances. Seagrass ecosystems are declining globally because of direct and indirect threats that shift environmental conditions controlling seagrass distribution. Seagrass species responses to disturbances vary based on a number of factors including life history strategy. The goal of this study was to map and analyze patterns of dominant seagrass species change at Cairns and Gladstone from 2005-2014 and Townsville from 2007-2014. This compilation data set was symbolized according to the life history strategy of the species. The major disturbances during this time period were physical damage from …

Bacterial Diversity And Community Composition From Seasurface To Subseafloor, Emily A. Walsh, John B. Kirkpatrick, Scott Rutherford, David C. Smith, Mitchell Sogin, Steven D'Hondt

Arts & Sciences Faculty Publications

We investigated compositional relationships between bacterial communities in the water column and those in deep-sea sediment at three environmentally distinct Pacific sites (two in the Equatorial Pacific and one in the North Pacific Gyre). Through pyrosequencing of the v4-v6 hypervariable regions of the 16S ribosomal RNA gene, we characterized 450 104 pyrotags representing 29 814 operational taxonomic units (OTUs, 97% similarity). Hierarchical clustering and non-metric multidimensional scaling partition the samples into four broad groups, regardless of geographic location: a photic-zone community, a subphotic community, a shallow sedimentary community and a subseafloor sedimentary community (≥1.5 meters below seafloor). Abundance-weighted community compositions …

Symbiont Type And Photophysiology Of Acropora Loripes And Platygyra Daedalea Under Future Scenarios Of Rising Ocean Temperatures And Pco2, Lauren Howe-Kerr

Independent Study Project (ISP) Collection

Coral cover is declining at an alarming rate, and it is estimated that 60% of reefs worldwide may be lost by 2030. Elevated seawater temperatures and ocean acidification are contributing to an increase in the frequency and severity of bleaching events. These events disrupt the symbiosis between corals and their photosynthetic dinoflagellates (Symbiodinium spp). Relatively little is known about the ability of corals to acclimatize to changing environmental conditions or whether the rate of climate change is too fast for corals to keep up, limiting the accuracy of future predictions for reef resilience. However, the ability of some coral species …

Bacterial Indicators Of Fecal Pollution: Exploring Relationships Between Fecal Coliform And Enterococcus Groups In Central And South Florida Surface Waters, Shelby G. Craig

HCNSO Student Theses and Dissertations

Ambient and recreational surface waters worldwide experience fecal pollution due to a variety of anthropogenic sources. Fecal waste has been proven, for over a century, to harbor pathogenic microorganisms which subsequently cause a variety of disease and illness in human hosts. The benefits of utilizing fecal indicator bacteria (FIB) as a simple, inexpensive means to detect fitful human pathogens within a variety of water matrices are vast. However, no universal agreement exists in regard to which indicator is best suited for detection of fecal contamination and pathogens in environmental waters, and no single standard for bacterial indicators has been federally …

The Role Of Traditional Knowledge About And Management Of Seaworms (Polychaeta) In Making Austronesian Worlds, Cynthia Twyford Fowler

Faculty Scholarship

This paper discusses how Kodi make their worlds cognitively as well as experientially, and how these worlds relate to sustainability and wellbeing. Kodi construct their cognitive worlds as well as their biophysical landscapes whilst interacting with many other species. This presentation focuses on human-polychaete interactions in order to illustrate world making processes. Seaworm traditions have deep historical roots in Austronesian societies and continue to be crucial for the wellbeing of contemporary communities. World-making processes are evident in what Kodi people say about seaworms and how they move through space relative to seaworms. While Kodi construct time they simultaneously construct space …

Identification Of A Mycobacterium Sp. As The Causative Agent Of Orange Nodular Lesions In The Atlantic Sea Scallop Placopecten Magellanicus, Catherine Grimm, Carl Huntsberger, Kathryn Markey, Susan Inglis, Roxanna Smolowitz

Arts & Sciences Faculty Publications

The Atlantic sea scallop Placopecten magellanicus is an economically important species in the offshore fisheries on the east coast of the USA. Recently, animals collected from waters ranging from Massachusetts to Maryland have shown variably sized (up to 1 cm in diameter) orange nodular foci, predominantly in the adductor muscle tissue, but also in other organs. Histological evaluation of the nodular lesions showed rod-shaped bacteria that stain acid-fast positive and Gram-positive. PCR methodology was employed to identify the causative organism of the nodules as a Mycobacterium sp. using analysis of the partial 16S gene and the 16S-23S internal transcribed spacer …

Coral Genotype Influence On Growth And Stress Resistance In Acropora Cervicornis: Investigating Potential Energy Tradeoffs, Peter T. Grasso

HCNSO Student Theses and Dissertations

Over the last few decades coral reefs have faced unprecedented declines in health due to natural and anthropogenic sources. Until recently few studies have examined genotypic variation of growth and thermal stress resistance in Acropora cervicornis. This study aims to assess the potential for energy trade-offs between growth and thermal stress resistance by following 120 coral fragments from 12 genotypes of Acropora cervicornis over the course of 15 months to determine average growth rates for each genotype. Following the completion of the growth observation a bleaching event occurred in the lower Florida Keys providing the opportunity for examining thermal …

An Endemic Commensal Leucothoid Discovered In The Tunicate Cnemidocarpa Bicornuta, From New Zealand (Crustacea, Amphipoda), Kaitlyn M. Brucker

HCNSO Student Theses and Dissertations

Precise descriptions and comprehensive taxonomies of species and their ecology are essential in monitoring changes in marine biodiversity at multiple spatial scales. A currently undescribed species of commensal amphipod in the genus Leucothoe is reported from New Zealand, collected from the endemic tunicate Cnemidocarpa bicornuta. This species differs from others in the genus in having a one-articulate first maxilla palp and an apically produced tuberculate lobe on the inner margin of the outer plate of the maxilliped. Previous taxonomic surveys in New Zealand waters did not document this species, indicating that it may be a recent arrival. This research …

Benthic Foraminifera Abundance, Stable Isotopes, Desoto Canyon Sediments, 2010-2012, Patrick Schwing

C-IMAGE data

Spatial and temporal compilation of benthic foraminiferal abundance based on individually counted foraminifera from washed sediment samples, del13C measurements from Cibicidoides sp. measured by the SIRMS instrument at USF, CMS, all presented in the context of depth in each sediment core as well as by short-lived radioisotope age models. Spreadsheet: Benthic Foram Taxonomy, Foram Abundance Manuscript title: Quantifying the ecological impact of the Deepwater Horizon event on benthic foraminifera and subsequent rates of recovery Spreadsheet: Benthic Foram Stable Carbon Isotopes Manuscript title: Persistent δ13C depletion in benthic foraminiferal carbonate following the Deepwater Horizon event

West Florida Shelf Beach Sediment Pah And Dioctyl Sodium Sulfosuccinate Concentrations, Microtox Luminescence And Microscreen Mutagenicity Data, 2010 To 2013, Lauren D. Mcdaniel

C-IMAGE data

Six cohesive sand patty sediments were collected on a West Florida Shelf beach in St. Petersburg Florida, January, 2013. These were analyzed for presence of PAH compounds and the composition compared to measurements from known Deepwater Horizon contaminated beach sediments. Known contaminated samples were collected from Santa Rosa Florida in July 2010 and January 2011, and from Gulf Shores Alabama in December 2012. The same samples were also analyzed for biological activity and the presence of Corexit dispersant (DOSS). This dataset includes concentration data for PAHs and DOSS in these samples. The biological activity in the water accommodated fraction of …

Chemical Analysis Of Sediment And Fish Species Near The Hercules 265 Blowout, Gulf Of Mexico, 2013, Isabel Romero

C-IMAGE data

On July 23, 2013 a marine gas rig (Hercules 265) ignited in the northern Gulf of Mexico. The rig burned out of control for several days before being extinguished. We conducted a rapid-response sampling campaign near Hercules 265 after the fire to ascertain if sediments and fishes were polluted above earlier baseline levels. Sediment cores were collected to the SE of the rig at a distance of ~0.2 km, 8 km and 18 km using a multicorer, and demersal fishes were collected from ~0.2 to 8 km SE of the rig using a longline (508 hooks). Recently deposited sediments document …

Spatial Distributions Of Fish And Invertebrates In The Gulf Of Mexico For 2010-01-01 Estimated Using A Statistical Model, Michael Drexler

C-IMAGE data

A generalized additive modelling (GAM) approach is used to describe the abundance of 40 species groups (i.e. functional groups) across the Gulf of Mexico (GoM) using a large fisheries independent data set (SEAMAP) and climate scale oceanographic conditions. Predictor variables included in the model are chlorophyll a, sediment type, dissolved oxygen, temperature, and depth. The GAM approach was shown to be robust despite zero-inflated data. article: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0064458

Dataset For: Simulating Cell Death In The Termination Of Karenia Brevis Blooms: Implications For Predicting Aerosol Toxicity Vectors To Humans, Jason M. Lenes

C-IMAGE data

A non-linear lysis term for simulation of K. brevis HAB termination on the West Florida Shelf is introduced, with the assumption that particle encounters of planktonic microalgae and bacteria can be described as the square of the phytoplankton biomass. This formulation also accounts for nutrient-limitation of K. brevis as a precondition for susceptibility to bacterial and viral attack, and potentially programmed cell death. Two model simulations were run of linear and non-linear lysis cases. Model output was compared against observed weekly maximum K. brevis concentrations, with statistical metrics calculated over three HAB phases during 2001. Introduction of the non-linear lysis …

Golden Tilefish Tissue And Eye-Lens Stable Isotopes And C:N Ratios From The Gulf Of Mexico, Summer 2013, Jenny Fenton Ostroff

C-IMAGE data

Stable isotope and C:N ratio data were analyzed for muscle, liver, heart, brain, blood, spleen and separated eye lens layers of golden tilefish.

Satellite, Glider Data, And Field Measurements To Study Harmful Algae On The West Florida Shelf During 2011 And 2012, Chuanmin Hu

C-IMAGE data

Satellite Oceanography is a sub-task under Task 4. It relies primarily on satellite-collected data, processed using either NASA standard algorithms or customized algorithms to produce data and imagery products specifically tailored for this project.

Predator-Prey Diet Linkages With Error Range For The Gulf Of Mexico Fitted Using Maximum Likelihood Method, Cameron H. Ainsworth

C-IMAGE data

Data is from Masi, M and Ainsworth, C. (in press) A Probabilistic Representation of Fish Diet Compositions from Multiple Data Sources: A Gulf of Mexico Case Study. Ecological Modelling. April 2014. Trophic ecosystem models are interactive tools that allow decision makers to analyze how a management decision can impact an ecosystem on a multi-species level, and are increasingly being used as a supplement to the current single species approach to fisheries management. The functionality of such a model is dependent upon an accurate representation of the trophic interactions occurring within a study area. Typical methods for developing a diet matrix …

Sponge Distribution And The Presence Of Photosymbionts In Moorea, French Polynesia, Christopher J. Freeman, Cole Easson

Marine & Environmental Sciences Faculty Articles

Photosymbionts play an important role in the ecology and evolution of diverse host species within the marine environment. Although sponge-photosymbiont interactions have been well described from geographically disparate sites worldwide, our understanding of these interactions from shallow water systems within French Polynesia is limited. We surveyed diverse habitats around the north coast of Moorea, French Polynesia and screened sponges for the presence of photosymbionts. Overall sponge abundance and diversity were low, with <1% cover and only eight putative species identified by 28S barcoding from surveys at 21 sites. Of these eight species, seven were found predominately in shaded or semi-cryptic habitats under overhangs or within caverns. Lendenfeldia chondrodeswas the only species that supported a high abundance of photosymbionts and was also the only species found in exposed, illuminated habitats. Interestingly, L. chondrodes was …

Hydrocarbons In Deep-Sea Sediments Following The 2010 Deepwater Horizon Oil Spill In The Northeast Gulf Of Mexico, Isabel Romero

C-IMAGE data

High-resolution analyses of sediment cores collected in the aftermath of the Deepwater Horizon (DWH) were conducted to reconstruct the concentration, composition and flux of hydrocarbons to deep-sea (pre-2010, 2010, and 2011) in the DeSoto Canyon, Northeast Gulf of Mexico. Specifically, we analyzed total organic carbon (TOC), aliphatic, polycyclic aromatic hydrocarbon (PAHs), and short-lived radionuclide (234Th, 210Pb) compounds at 2 mm and 5 mm core intervals to elucidate possible hydrocarbon sources and transport pathways to sediments during the time covered in this study. Results showed higher TOC, total aliphatics and PAH fluxes after the DWH blowout (2010-2011) compared to pre-2010 years …

Zooplankton Abundance And Distribution Data For The Northeastern Gulf Of Mexico And West Florida Shelf: June 2012 – August 2014, Kendra L. Daly

C-IMAGE data

This dataset contains seasonal and interannual zooplankton abundance collected from the northeastern Gulf of Mexico and the west Florida shelf. The purpose of this dataset is to assess the seasonal and interannual changes in zooplankton abundance after the Deepwater Horizon oil spill.

Distribution, Abundance And Movement Of Fish Among Seagrass And Mangrove Habitats In Biscayne Bay, Patrick C. Goebel

HCNSO Student Theses and Dissertations

Inshore tropical and subtropical estuaries harbor a relatively high abundance and diversity of organisms. Specifically within estuaries, mangrove and seagrass habitats provide shelter and food for a plethora of organisms, through some or all their life histories. Given the biological connection between offshore coral reefs and coastal estuaries, there is a critical need to understand the underlying processes that determine distribution and abundance patterns within mangrove-seagrass habitats. The predatory fish assemblage within the mangrove and seagrass beds of Biscayne Bay, Florida (USA), was examined over 24-hr. time periods along a distance and habitat gradient from the mangrove edge and nearshore …

Sustainable Whale-Watching For The Philippines: A Bioeconomic Model Of The Spinner Dolphin (Stenella Longirostris), Allison Jenny Santos

HCNSO Student Theses and Dissertations

Whale-watching provides economic opportunities worldwide and particularly proliferates in developing countries, such as the Philippines. The sustainability of whale-watching is increasingly debated as these activities also negatively impact cetaceans through changes in behavior, communication, habitat use, morbidity, mortality, and life-history parameters. This study evaluated the total annual cost, revenue, and profit of whale-watching operators in Bais, Philippines, and predicted the changes in the population for spinner dolphin Stenella longirostris with varying levels of whale-watching effort. Total revenue was 3,805,077 PHP ($92,478 USD) while total cost was 5,649,094 PHP ($137,294 USD) with a discount rate of ten percent. The total annual …

Assessing The Impacts Of Oil-Associated Marine Snow Formation And Sedimentation During And After The Deepwater Horizon Oil Spill, Kendra L. Daly, Uta Passow, Jeffrey Chanton, David Hollander

Marine Science Faculty Publications

The Deepwater Horizon oil spill was the largest in US history, unprecedented for the depth and volume of oil released, the amount of dispersants applied, and the unexpected, protracted sedimentation of oil-associated marine snow (MOS) to the seafloor. Marine snow formation, incorporation of oil, and subsequent gravitational settling to the seafloor (i.e., MOSSFA: Marine Oil Snow Sedimentation and Flocculent Accumulation) was a significant pathway for the distribution and fate of oil, accounting for as much as 14% of the total oil released. Long residence times of oil on the seafloor will result in prolonged exposure by benthic organisms and economically …

Preferential Depletion Of Zinc Within Costa Rica Upwelling Dome Creates Conditions For Zinc Co-Limitation Of Primary Production, P. Dreux Chappell, Jagruti Vedmati, Karen E. Selph, Heather A. Cyr, Bethany D. Jenkins, Michael R. Landry, James W. Moffett

OES Faculty Publications

The Costa Rica Dome (CRD) is a wind-driven feature characterized by high primary production and an unusual cyanobacterial bloom in surface waters. It is not clear whether this bloom arises from top-down or bottom-up processes. Several studies have argued that trace metal geochemistry within the CRD contributes to the composition of the phytoplankton assemblages, since cyanobacteria and eukaryotic phytoplankton have different transition metal requirements. Here, we report that total dissolved zinc (Zn) is significantly depleted relative to phosphate (P) and silicate (Si) within the upper water column of the CRD compared with other oceanic systems, and this may create conditions …

Marine Disease Impacts, Diagnosis, Forecasting, Management And Policy, Kevin D. Lafferty, Eileen E. Hofmann

CCPO Publications

(First paragraph) As Australians were spending millions of dollars in 2014 to remove the coraleating crown of thorns sea star from the Great Barrier Reef, sea stars started washing up dead for free along North America’s Pacific Coast. Because North American sea stars are important and iconic predators in marine communities, locals and marine scientists alike were alarmed by what proved to be the world’s most widespread marine mass mortality in geographical extent and species affected, especially given its mysterious cause. Investigative research using modern diagnostic techniques implicated a never-before-seen virus [1]. The virus inspired international attention to marine diseases, …