Marine Biology Commons^™

Population Dynamics And Community Composition Of Ammonia Oxidizers In Salt Marshes After The Deepwater Horizon Oil Spill, Anne E. Bernhard, Roberta Sheffer, Anne E. Giblin, John M. Marton, Brian J. Roberts

Biology Faculty Publications

The recent oil spill in the Gulf of Mexico had significant effects on microbial communities in the Gulf, but impacts on nitrifying communities in adjacent salt marshes have not been investigated. We studied persistent effects of oil on ammonia-oxidizing archaeal (AOA) and bacterial (AOB) communities and their relationship to nitrification rates and soil properties in Louisiana marshes impacted by the Deepwater Horizon oil spill. Soils were collected at oiled and unoiled sites from Louisiana coastal marshes in July 2012, 2 years after the spill, and analyzed for community differences based on ammonia monooxygenase genes (amoA). Terminal Restriction Fragment …

A Compilation Of Global Bio-Optical In Situ Data For Ocean-Colour Satellite Applications, Frank Muller-Karger

Marine Science Faculty Publications

A compiled set of in situ data is important to evaluate the quality of ocean-colour satellite-data records. Here we describe the data compiled for the validation of the ocean-colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI). The data were acquired from several sources (MOBY, BOUSSOLE, AERONET-OC, SeaBASS, NOMAD, MERMAID, AMT, ICES, HOT, GeP&CO), span between 1997 and 2012, and have a global distribution. Observations of the following variables were compiled: spectral remote-sensing reflectances, concentrations of chlorophyll a, spectral inherent optical properties and spectral diffuse attenuation coefficients. The data were from multi-project archives acquired via the open …

Predator-Prey Diet Linkages With Error Range For The Gulf Of Mexico Fitted Using Maximum Likelihood Method, April 2013- May 2015, Cameron Ainsworth

C-IMAGE data

Data is from Tarnecki, J.H., Wallace, A., Simons, J. and Ainsworth, C.H. 2016. Progression of a Gulf of Mexico Food Web Supporting Atlantis Ecosystem Model Development. Fisheries Research (doi:10.1016/j.fishres.2016.02.023). This is a dataset representing predator-prey linkages with associated error ranges for Gulf of Mexico fish functional groups. The data will be used in an Atlantis biogeochemical trophic ecosystem model of the Gulf of Mexico described by Ainsworth et al. 2015 (NOAA Technical Memorandum NMFS-SEFSC-676). This diet dataset is based on data previously published in Masi, M.D., Ainsworth, C.H., Chagaris, D., 2014. (Ecol. Model. 284, 60-74) and expanded to include new …

Life In The Cold: An Investigation Of Polar Regions, Briar Bragdon, Ashley Breault, Bailey Bush, Jennifer Gamble, Rebecca Hudak, Emily Johnston, Kaitlyn Kennedy, Alexandria Makucewicz, Sharlene Maynard, Erin Mohr, Gwen Pelletier, Halie Pruitt, Abigail Rhodes, Peter Swan, Markus Frederich

Marine Sciences Student Projects

Polar areas provide unique environments that, though they may seem extreme and uninhabitable, are flourishing with life. These areas around the North and South poles include deep oceans, shallow shelf regions, tundra, mountain ranges and vast glaciers. With the increasing effects of global climate change, a basic knowledge of polar regions is crucial to understand future impacts and implications. The purpose of this book is to give a broad background of polar biology, and also provide details on specific examples through case studies. Topics included throughout this book are: Ice, Life in Polar Regions, Species Interactions, and Anthropogenic Impacts.

The …

Rearing Temperature Affects The Expression Of Proteins In The Adhesive Of The Striped Acorn Barnacle, Balanus Amphitrite, Melissa J. Daugherty

Master's Theses

Barnacles are dominant hard–fouling organisms in marine waters. They attach to substrates by secreting a complex proteinaceous adhesive. Understanding the chemical composition of this multi–protein underwater adhesive and how it is affected by environmental variables, such as oceanic temperatures, is critical for developing nontoxic solutions to control biofouling. Previous experiments in our lab revealed an inverse relationship between critical removal stress (CRS) and temperatures at which barnacles were reared. Further investigations showed that this correlation is not attributed to differences in physical properties such as barnacle size or short–term changes in the viscosity of adhesive. Therefore, the observed effects may …

The Hagfish Gland Thread Cell: A Fiber-Producing Cell Involved In Predator Defense, Douglas S. Fudge, Sarah Schorno

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Fibers are ubiquitous in biology, and include tensile materials produced by specialized glands (such as silks), extracellular fibrils that reinforce exoskeletons and connective tissues (such as chitin and collagen), as well as intracellular filaments that make up the metazoan cytoskeleton (such as F-actin, microtubules, and intermediate filaments). Hagfish gland thread cells are unique in that they produce a high aspect ratio fiber from cytoskeletal building blocks within the confines of their cytoplasm. These threads are elaborately coiled into structures that readily unravel when they are ejected into seawater from the slime glands. In this review we summarize what is currently …

Surface Dynamics Of Crude And Weathered Oil In The Presence Of Dispersants: Laboratory Experiment And Numerical Simulation, Alexander Soloviev, Brian K. Haus, Michael G. Mcgauley, Cayla Whitney Dean, David G. Ortiz-Suslow, Nathan J. M. Laxague, Tamay M. Ozgokmen

Marine & Environmental Sciences Faculty Articles

Marine oil spills can have dire consequences for the environment. Research on their dynamics is important for the well-being of coastal communities and their economies. Propagation of oil spills is a very complex physical-chemical process. As seen during the Deepwater Horizon event in the Gulf of Mexico during 2010, one of the critical problems remaining for prediction of oil transport and dispersion in the marine environment is the small-scale structure and dynamics of surface oil spills. The laboratory experiments conducted in this work were focused on understanding the differences between the dynamics of crude and weathered oil spills and the …

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

HCAS Graduate Science Research Symposium

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

HCAS Graduate Science Research Symposium

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 …

Temporal And Spatial Patterns Of Barnacle Settlement Within The Southern, Ca Rocky Intertidal, Diana Fontaine

Undergraduate Honors Theses

Barnacles act as model species for understanding how larval transport processes influence settlement and adult population dynamics. Settlement of barnacle larvae was quantified in the Southern California intertidal from April 2014 through January 2015 and from April through December 2015. Settlement plates (PVC, ~1.9 cm²) were deployed daily at 12-14 locations within our study site in the Bird Rock, La Jolla, California intertidal. Time series of temperature and significant wave height was also collected within the study site. We compared temporal patterns in settlement with changes in temperature and significant wave height. In general, settlement was higher in …

Characterization Of The Marine Sponge Amphimedon Compressa Microbiome Across A Spatial Gradient, Renee Michelle Potens

HCNSO Student Theses and Dissertations

Diverse and ecologically important microbial communities (microbiomes) are symbiotic within marine sponges. In this study, the microbiome of Amphimedon compressa from three sample locations (Broward and Dade Counties, Southeast Florida, USA and the Southern Caribbean, Bocas del Toro, Panama) is characterized using 16S rRNA Illumina sequencing. The predominant taxa are Proteobacteria and Cyanobacteria, as expected for Low Microbial Abundance sponges, accounting for over 53% of the total microbiome community. The numbers of Operational Taxonomic Units (OTUs) decrease from Broward County (2,900) to Dade County (2,300) and then Bocas del Toro (1,200). The correlates to a decreasing north-south gradient of …

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

HCAS Graduate Science Research Symposium

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

HCAS Graduate Science Research Symposium

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 …

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

HCAS Graduate Science Research Symposium

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 deployment, …

Ménage À Trois In The Atlantic Brief Squid (Lolliguncula Brevis): Prior Presence Affects Mate Choice, Rachel A. Schlessinger

Theses and Dissertations

Lolliguncula brevis given prior presence experienced a significantly greater number of contacts with opposite sex squid than rivals. Males given prior presence also spent significantly more time in proximity to females than rivals. This suggests that for both female and male Atlantic brief squid, having prior presence influences mating behavior.

Sipper Plankton And Marine Snow Abundance And Distribution Data For The Northeastern Gulf Of Mexico: June 2012 – August 2014, Kendra L. Daly

C-IMAGE data

This dataset contains seasonal and interannual marine snow, phytoplankton, zooplankton, and larval fish abundance and distributions collected from the northeastern Gulf of Mexico using the Shadowed Image Particle Profiling Evaluation Recorder (SIPPER). The purpose of the dataset is to assess the seasonal and interannual zooplankton abundance and distribution after the Deepwater Horizon oil spill.

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

C-IMAGE data

This dataset contains zooplankton dry weight biomass calculated from samples collected during RV Weatherbird II and RV Bellows cruises from June 2012 to August 2014. Zooplankton was collected using towed bongo nets from the northeastern Gulf of Mexico and the west Florida shelf. The contents of the dataset are an assessment of the seasonal and interannual changes in zooplankton biomass after the Deepwater Horizon oil spill.

Nitrogen, Phosphorus, And Suspended Solids Concentrations In Tributaries To The Great Bay Estuary Watershed In 2015, Matthew A. Wood

PREP Reports & Publications

Nitrogen, phosphorus, and sediment loads to the Great Bay Estuary are a constant concern. The Piscataqua Region Estuaries Partnership (PREP) calculates the nitrogen load from tributaries to the Great Bay Estuary for its State of Our Estuaries reports. Therefore, the purpose of this study was to collect representative data on nitrogen, phosphorus, and suspended sediment concentrations in tributaries to the Great Bay Estuary in 2015. The study design followed the tributary sampling design which was implemented by the New Hampshire Department of Environmental Services between 2001 and 2007 and sustained by the University of New Hampshire from 2008 to the …

High Resolution Study Of The Spatial Distributions Of Abyssal Fishes By Autonomous Underwater Vehicle, Rosanna Milligan, K. J. Morris, B. J. Bett, J. M. Durden, D. O. B. Jones, K. Robert, H. A. Ruhl, D. M. Bailey

Marine & Environmental Sciences Faculty Articles

On abyssal plains, demersal fish are believed to play an important role in transferring energy across the seafloor and between the pelagic and benthic realms. However, little is known about their spatial distributions, making it difficult to quantify their ecological significance. To address this, we employed an autonomous underwater vehicle to conduct an exceptionally large photographic survey of fish distributions on the Porcupine Abyssal Plain (NE Atlantic, 4850 m water depth) encompassing two spatial scales (1–10 km²) on and adjacent to a small abyssal hill (240 m elevation). The spatial distributions of the total fish fauna and that …

An Alternate Trawling Method: Reduced Bycatch And Benthic Disturbance Achieved With The Wing Trawling System, Geoffrey Udoff

LSU New Orleans Theses and Dissertations

The Wing Trawling System (WTS) was tested as an alternative to traditional shrimp capture methods in the Gulf. Compared to an otter trawl, this trawl was conceived to reduce bycatch, retain shrimp catch, and minimize seafloor disturbance. Through seventy-one paired tows, the WTS was assessed against a standard otter trawl. The WTS was found to reduce bycatch by 63-65% and reduce shrimp catch by 30-35%. Additionally, I measured the depth of the scars produced by both trawls and quantified the turbidity of the plumes behind them. The scars left by the WTS and the otter trawl were between 9.9 …