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Full-Text Articles in Life Sciences

Incorporating Life Into Living Shorelines: Can Gulf Ribbed Mussels Reduce Shoreline Erosion And Enhance Restoration Practices?, Jordan Logarbo May 2021

Incorporating Life Into Living Shorelines: Can Gulf Ribbed Mussels Reduce Shoreline Erosion And Enhance Restoration Practices?, Jordan Logarbo

LSU Master's Theses

The gulf ribbed mussel (Geukensia granosissima) exists throughout the Gulf of Mexico and influences biotic and abiotic environmental attributes as an ecosystem engineer. Ribbed mussels are an important component of marsh ecosystems providing services including filtering particulate matter, depositing and transforming nutrients in the system, increasing soil strength via byssal threads and providing structure via their shells.

The spatial distribution of mussels along the marsh edge of Sister Lake, LA was investigated via a broad survey of 150 sites, in relation to elevation, exposure and vegetation percent cover. This survey was followed by a second survey at a subset of ...


Marine Aquaculture In Maine: Understanding Diverse Perspectives And Interactions At Multiple Scales, Melissa L. Britsch May 2021

Marine Aquaculture In Maine: Understanding Diverse Perspectives And Interactions At Multiple Scales, Melissa L. Britsch

Electronic Theses and Dissertations

Coastal oceans are changing and experiencing increased use. The social and ecological benefits of healthy coastal oceans are well documented and include habitats for marine species, storm protection, and recreational opportunities (MEA, 2005). As the impacts of human activities are recognized, questions about how ocean spaces should be used are becoming more common. These questions are complex and involve many tradeoffs. Understanding the values people hold about uses, and how activities and ecosystems overlap, is critical for weighing tradeoffs and improving future management. I use the northeastern U.S. state of Maine to study human interactions with coastal oceans. Maine ...


Effects Of Ibuprofen On Duration Of Fear Responses In Red Claw Crabs, Ryan Shaffer Apr 2021

Effects Of Ibuprofen On Duration Of Fear Responses In Red Claw Crabs, Ryan Shaffer

Thinking Matters Symposium

Pharmaceutical pollution is a growing environmental issue. Chemicals engineered to affect humans persist in the water system and may have unintended effects on animal behavior. Ibuprofen is an anti-inflammatory drug shown to reduce predator avoidance in fish. I chose to examine the effects of ibuprofen on the foraging behavior of red clawed crab (Perisesarma bidens) by measuring time spent in the open. Crabs typically spend most of their time hiding and only expose themselves to danger in order to forage for food. I predicted that crabs treated with the high dose of ibuprofen will spend less time hiding compared to ...


Eelgrass Restoration In San Francisco Bay: An Interdisciplinary Stated Preference Classroom Experiment, Camille M. Antinori Apr 2021

Eelgrass Restoration In San Francisco Bay: An Interdisciplinary Stated Preference Classroom Experiment, Camille M. Antinori

Journal of Ocean and Coastal Economics

This paper aims to integrate experiential, interdisciplinary approaches into environmental economics courses through a stated preference analysis for eelgrass beds harboring aquatic plants foundational to many estuaries and coastal zones. It argues that such approaches are necessary in undergraduate education to support real-world needs in oceans and climate policy. Through collaboration with ecologists and peers, students developed willingness-to-pay measures of $35 and $42 for a 10-year restoration program for 200 acres of eelgrass (Zostera marina) in the San Francisco Bay based on open- and closed-ended elicitation formats. The experiment provides an example of overcoming the challenge of orienting students and ...


Subtidal Seaweed And Eelgrass Monitoring Photographs 2020, David M. Burdick, Gregg E. Moore Apr 2021

Subtidal Seaweed And Eelgrass Monitoring Photographs 2020, David M. Burdick, Gregg E. Moore

Jackson Estuarine Laboratory

Records of photographs of subtidal seaweed and eelgrass sampling plots for cover (50 by 50 cm) collected by Jackson Estuarine Laboratory research staff in 2020.


Seaweed Monitoring In The Great Bay Estuary, Nh: 2020 Annual Report, Andrew Payne, David M. Burdick, Gregg Moore, Natalie White, Christopher Peter, Arthur Mathieson Apr 2021

Seaweed Monitoring In The Great Bay Estuary, Nh: 2020 Annual Report, Andrew Payne, David M. Burdick, Gregg Moore, Natalie White, Christopher Peter, Arthur Mathieson

Jackson Estuarine Laboratory

As water temperatures rise due to global warming and nitrogen inputs change, it is important to understand how these changes are impacting vegetative communities that form the basic habitat structure in the Great Bay Estuary, NH. The abundance and taxa of intertidal seaweeds have been monitored at fixed locations throughout the Estuary since 2013. In 2020, percent cover and biomass were collected from five intertidal and four subtidal sampling locations. Data from 2013-2020 show appreciable amounts of nuisance seaweeds (primarily reds), including several introduced species. Cover of green seaweeds decreased significantly over time at the two intertidal sites (Depot Road ...


Photographs Of Seaweeds In Intertidal Monitoring Plots, 2020, David M. Burdick, Gregg Moore Apr 2021

Photographs Of Seaweeds In Intertidal Monitoring Plots, 2020, David M. Burdick, Gregg Moore

Jackson Estuarine Laboratory

Records of photographs of intertidal seaweed sampling plots for cover (50 by 50 cm) and biomass (25 by 25 cm) collected by Jackson Estuarine Laboratory research staff in 2020.


Patterns And Mechanisms Of Intraspecific Trait Variation Across Thermal Gradients In A Marine Gastropod, Andrew R. Villeneuve Apr 2021

Patterns And Mechanisms Of Intraspecific Trait Variation Across Thermal Gradients In A Marine Gastropod, Andrew R. Villeneuve

Masters Theses

As the earth’s climate changes due to anthropogenic emissions, it has increasingly become an imperative within the ecological community to understand existing species adaptations to climate change. Much focus has been paid to how a species might react to climate change, but the role of locally adapted traits and responsible environmental mechanisms have received less attention. Quantifying how sublethal (e.g. growth rates) and lethal (e.g. thermal tolerance) trait performance vary between populations can thus improve our understanding of how populations, and the entire species, will react to climate change. Here, I quantified the spatial patterns of performance ...


The Salas Y Gómez And Nazca Ridges: A Review Of The Importance, Opportunities And Challenges For Protecting A Global Diversity Hotspot On The High Seas, Daniel Wagner, Liesbeth Van Der Meer, Matthias Gorny, Javier Sellanes, Carlos F. Gaymer, Eulogio H. Soto, Erin E. Easton, Alan M. Friedlander, Dhugal J. Lindsay, Tina N. Molodtsova Apr 2021

The Salas Y Gómez And Nazca Ridges: A Review Of The Importance, Opportunities And Challenges For Protecting A Global Diversity Hotspot On The High Seas, Daniel Wagner, Liesbeth Van Der Meer, Matthias Gorny, Javier Sellanes, Carlos F. Gaymer, Eulogio H. Soto, Erin E. Easton, Alan M. Friedlander, Dhugal J. Lindsay, Tina N. Molodtsova

Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

The Salas y Gómez and Nazca ridges are two seamount chains of volcanic origin, which include over 110 seamounts that collectively stretch across over 2,900 km in the southeastern Pacific. Ecosystems in this region are isolated by the Atacama Trench, the Humboldt Current System, and an extreme oxygen minimum zone. This isolation has produced a unique biodiversity that is marked by one of the highest levels of marine endemism on Earth. These areas also provide important habitats and ecological stepping stones for whales, sea turtles, corals, and a multitude of other ecologically important species, including 82 species that are ...


Seasonal Variability In Diazotroph Abundance And Gene Expression At A Coastal N2 Fixation Hotspot (Outer Banks, Nc), Katherine Crider, Corday Selden, Kimberly Powell, P. Dreux Chappell Apr 2021

Seasonal Variability In Diazotroph Abundance And Gene Expression At A Coastal N2 Fixation Hotspot (Outer Banks, Nc), Katherine Crider, Corday Selden, Kimberly Powell, P. Dreux Chappell

College of Sciences Posters

Marine microbial dinitrogen (N2) fixation, the conversion of gaseous N2 to bioavailable species, is the primary source of new oceanic nitrogen (N). N is present in nucleic acids, amino acids, and proteins, and is essential to all life. Long considered to be a primarily oligotrophic ocean process, significant N2 fixation rates have recently been observed in coastal environments, including along the Cape Hatteras front. To see if elevated N2 fixation was a persistent feature in this region, N2 fixation rates and N2 fixer (diazotroph) abundance and gene expression were investigated through roughly monthly sampling ...


Alexandrium In The Arctic: Are Harmful Algae Spreading As The Arctic Warms?, Sveinn Einarsson, Kate Lowry, Robert Pickart, Karin Ashjian, P. Dreux Chappell Apr 2021

Alexandrium In The Arctic: Are Harmful Algae Spreading As The Arctic Warms?, Sveinn Einarsson, Kate Lowry, Robert Pickart, Karin Ashjian, P. Dreux Chappell

College of Sciences Posters

Alexandrium tamerense is a well-studied dinoflagellate known for its ability to produce the neurotoxin that causes paralytic shellfish poisoning. Until 1970 Alexandrium tamerense was only found in Europe, North America, and Japan but has been increasingly found all over the globe. Alexandrium is characteristically found in temperate and subtropical regions and as the Arctic warms, there is considerable concern that it may be expanding into the Arctic. We found Alexandrium tamerense during a research expedition to the Alaskan Beaufort Sea shelf to study upwelling. Upwelling events are known to support seasonal blooms of phytoplankton, which are important primary producers at ...


Who Invited You? The Complex Story Of Aquatic Invasive Species, Shaylee A. Amidon, Colin J. Birch, Sierra E. Brown, Kaitlyn E. Butts, Abbigail L. Felix, Samuel S. Fuller, Edwin Gao, Emily M. Lewis, Alexandra Michaud, Doyle M. Proto, Bradley N. Spear, George H. Wales, Hannah M. Welch, Conor F. Wiley, Kristen S. Wurth, Markus Frederich Apr 2021

Who Invited You? The Complex Story Of Aquatic Invasive Species, Shaylee A. Amidon, Colin J. Birch, Sierra E. Brown, Kaitlyn E. Butts, Abbigail L. Felix, Samuel S. Fuller, Edwin Gao, Emily M. Lewis, Alexandra Michaud, Doyle M. Proto, Bradley N. Spear, George H. Wales, Hannah M. Welch, Conor F. Wiley, Kristen S. Wurth, Markus Frederich

Marine Sciences Student Projects

Invasive species represent a global threat to ecosystems, human health, and the economy. A basic knowledge of invasive species biology is crucial to understand current and future impacts and implications. The purpose of this book is to provide a broad background on invasive species, and also details on specific examples through case studies.

The students in the course Aquatic Invasive Species (MAR 442) at the University of New England in Biddeford, Maine, have researched and reviewed scientific literature to educate readers about these issues. The class, comprised of fifteen junior and senior Marine Science, Marine Affairs, Animal Behavior, and Environmental ...


Ecological Monitoring Program At Vims Esl : Annual Report 2020, Paige G. Ross, Richard A. Snyder Apr 2021

Ecological Monitoring Program At Vims Esl : Annual Report 2020, Paige G. Ross, Richard A. Snyder

Reports

An Ecological Monitoring Program (EMP) has been established at the Virginia Institute of Marine Science Eastern Shore Laboratory (VIMS ESL) for the coastal environment near the Wachapreague lab. The goals of the initiative are to 1) provide status and trends information to scientists who study and regulators who manage Virginia’s marine resources, 2) provide a scientific context for short-term research and grant proposals 3) provide pedagogical enrichment to educators for their classes, and 4) build capacity in staff expertise and training of interns and students at VIMS ESL.

The program formalizes and standardizes data collection for a long-term status ...


Modeling Changes In Baleen Whale Seasonal Abundance, Timing Of Migration, And Environmental Variables To Explain The Sudden Rise In Entanglements In California, Kaytlin Ingman, Ellen Hines, Piero L. F. Mazzini, Et Al Apr 2021

Modeling Changes In Baleen Whale Seasonal Abundance, Timing Of Migration, And Environmental Variables To Explain The Sudden Rise In Entanglements In California, Kaytlin Ingman, Ellen Hines, Piero L. F. Mazzini, Et Al

VIMS Articles

We document changes in the number of sightings and timing of humpback (Megaptera novaeangliae), blue (Balaenoptera musculus), and gray (Eschrichtius robustus) whale migratory phases in the vicinity of the Farallon Islands, California. We hypothesized that changes in the timing of migration off central California were driven by local oceanography, regional upwelling, and basin-scale climate conditions. Using 24 years of daily whale counts collected from Southeast Farallon Island, we developed negative binomial regression models to evaluate trends in local whale sightings over time. We then used linear models to assess trends in the timing of migration, and to identify potential environmental ...


Covid-19_Umaine News_New International Study Shows Alternative Seafood Networks Provided Resilient Diversity During Pandemic, University Of Maine Division Of Marketing And Communications Mar 2021

Covid-19_Umaine News_New International Study Shows Alternative Seafood Networks Provided Resilient Diversity During Pandemic, University Of Maine Division Of Marketing And Communications

Division of Marketing & Communications

Screenshot of UMaine News press release regarding a University of Maine study into the need for greater functional diversity in supply chains led by Joshua Stoll, assistant professor of.marine policy at the University of Maine.


Thermoelectric Generation And Thermophysical Properties Of Metal Oxide Nanofluids, Xinran Hou, Rong-Tsu Wang, Shaowen Huang, Jung-Chang Wang Mar 2021

Thermoelectric Generation And Thermophysical Properties Of Metal Oxide Nanofluids, Xinran Hou, Rong-Tsu Wang, Shaowen Huang, Jung-Chang Wang

Journal of Marine Science and Technology

This study describes the comprehensive characterization of the diverse water-based nanofluids involving aluminum oxide, titanium dioxide, and zinc oxide nanoparticles, which were prepared through the two-step synthesis method assisted by a microemulsion ultrasound skill with effects of both weight-percent concentration (wt.%) in the range of 1.0% and 5.0% and between 20 oC and 40 0C. The mean cluster size, zeta potential, pH value, viscosity, thermal conductivity, absorbance, light absorption, and electrical charge density of the various nanofluids were surveyed by relative experiments. The results showed that the 2 wt.% Al2O3, 2 wt.% TiO ...


A New Fuzzy Dea Model For Solving The Mcdm Problems In Supplier Selection, Chi-Mao Tsai, Hsuan-Shih Lee, Guo-Ya Gan Mar 2021

A New Fuzzy Dea Model For Solving The Mcdm Problems In Supplier Selection, Chi-Mao Tsai, Hsuan-Shih Lee, Guo-Ya Gan

Journal of Marine Science and Technology

Supplier selection is a crucial task in supply chain management, and good supply chain management is essential to a company's ability to develop sustainably and gain the trust and satisfaction of its customers. In modern supply chain management, supplier selection often takes the form of a multi-criteria decision-making (MCDM) problem. Thus, to solve this problem, this study formulated a novel fuzzy MCDM model, which is based on the fuzzy data envelopment analysis model. This novel approach can transform the linguistic variables of assessment criteria into well-founded quantitative data for calculation. Moreover, our approach can effectively discriminate between decision-making units ...


Wireless Sensor Network-Based Monitoring Of Bridge Pile Foundations For Detecting Scouring Depth, Han-Tang Huang, H. Ping Tserng, Ruei-Yu Hou, Mirosław Skibniewski Mar 2021

Wireless Sensor Network-Based Monitoring Of Bridge Pile Foundations For Detecting Scouring Depth, Han-Tang Huang, H. Ping Tserng, Ruei-Yu Hou, Mirosław Skibniewski

Journal of Marine Science and Technology

Climate change brings about unprecedented increases in the occurrence of storms and flooding. In response to increased risk of bridge pier scouring, there is a need for increased safety monitoring of bridges. This paper presents a wireless sensor network (WSN) - based solution developed to measure micro-vibrations of a bridge pier. Test measurement values are converted with the use of the Fast Fourier Transform (FFT) method to obtain natural frequencies. Scouring depth of the pier is estimated with the use of a Finite Element Method model. WSN is used to collect the signal and to test data transmission stability in different ...


Evaluation Of The Human Discomfort Caused By Ship Vibrations, Laurentiu Picu, Eugen Rusu Mar 2021

Evaluation Of The Human Discomfort Caused By Ship Vibrations, Laurentiu Picu, Eugen Rusu

Journal of Marine Science and Technology

The present work analyzes the subjective responses of people exposed to transient vibrations caused by systems with a single degree of freedom. In this context, the main objective of the research was to identify the main effect of vibrations on people's well-being at work (in particular on vessels crew) and to discover those frequencies that lead to the greatest discomfort. In order to achieve this goal, 12 laboratory experiments were carried out involving ten male subjects in good health, aged between 28 and 42. The variables of the vibratory system considered are: acceleration (4.8 ÷ 8.6 m/s ...


Application Of Physically Based Semi-Distributed Hec-Hms Model For Flow Simulation In Tributary Catchments Of Kaohsiung Area Taiwan, Fiaz Hussain, Ray-Shyan Wu, Kai-Chun Yu Mar 2021

Application Of Physically Based Semi-Distributed Hec-Hms Model For Flow Simulation In Tributary Catchments Of Kaohsiung Area Taiwan, Fiaz Hussain, Ray-Shyan Wu, Kai-Chun Yu

Journal of Marine Science and Technology

Hydrologic modeling is a commonly used tool to understand the rainfallerunoff processes of gauged and ungauged catchments for proper quantitative estimation of water resources availability. In the present study, an attempt is made to simulate surface runoff using a physically based semi-distributed hydrological (HEC-HMS) model for four local-scale tributary catchments of Kaohsiung area Taiwan. The input physical parameters of the model were calculated and preprocessed in HEC-GeoHMS based on digital elevation model (DEM), land use, soil and hydro-meteorological data. The model performance was satisfactory with Nash Sutcliffe Efficiency (NSE) ¼ 0.51 to 0.86 and the coefficient of determination ...


Evaluating Key Factors Of Container Shipping Lines From The Perspective Of High-Tech Industry Shippers, Chien-Lung Hsu, Tien-Chun Ho Mar 2021

Evaluating Key Factors Of Container Shipping Lines From The Perspective Of High-Tech Industry Shippers, Chien-Lung Hsu, Tien-Chun Ho

Journal of Marine Science and Technology

Because of the changes in customers' needs and demands created by the development of container transport in the 1960s, the global container transport business has become increasingly competitive. With the high-tech industry ranged with one of the few competitive industries in Taiwan from 2002, container shipping lines have been forced to implement innovative operating patterns to meet the evolving demands of the high-tech industry shippers. This study conducts a survey questionnaire of domestic high-tech industry shippers to explore the different factors affecting their selection of container shipping lines, evaluating the key influencing factors by maritime marketing's 4C framework: customer ...


Beach Topography Surveying Using Unmanned Aerial Vehicle Photogrammetry Technology, Hui-Ming Fang, Kuan-Tsung Chang, Sung-Shan Hsiao, Shih-Peng Chiang Mar 2021

Beach Topography Surveying Using Unmanned Aerial Vehicle Photogrammetry Technology, Hui-Ming Fang, Kuan-Tsung Chang, Sung-Shan Hsiao, Shih-Peng Chiang

Journal of Marine Science and Technology

The mechanisms of in situ topography changes must be identified for spatial planning in coastal areas. In this study, the authors used in situ direct measurement methods and indirect remote-sensing technologies to develop a method for beach topography surveillance. Unmanned aerial vehicles (UAVs) have advantages of high portability and mobility and low operating altitude. Therefore, a UAV was equipped with a lightweight camera and a positioning system that comprised a global positioning system and an inertial measurement unit. Aerial photogrammetry and aerial triangu-lation methods were adopted for matching image feature points to obtain the corresponding topographic points in the sand ...


Microplastics, Oysters, And The Indian River Lagoon – Final Report To Irl Nep, March 2021, Linda Walters, Casey Craig Mar 2021

Microplastics, Oysters, And The Indian River Lagoon – Final Report To Irl Nep, March 2021, Linda Walters, Casey Craig

CEELAB Research Data

UCF and partners initiated microplastics (MP) sampling in the Indian River Lagoon in March 2019, with monthly sampling of water samples at 35 locations, and quarterly sampling of oysters through February 2020. Additionally, the ability of the eastern oyster Crassostrea virginica to excrete microplastics was examined. Forty-four percent of water samples contained MP and there was an overall mean (± S.E.) of 1.47 (± 0.05) MP per liter of lagoon water (range: 0 – 25 MP). Fibers were the dominant MP type of MP (95.6%) and no nurdles or microbeads were collected. The dominant color of MP in water ...


Antioxidant Properties Of Pecan Shell Bioactive Components Of Different Cultivars And Extraction Methods, Cameron Cason, Veerachandra K. Yemmireddy, Juan Moreira, Achyut Adhikari Mar 2021

Antioxidant Properties Of Pecan Shell Bioactive Components Of Different Cultivars And Extraction Methods, Cameron Cason, Veerachandra K. Yemmireddy, Juan Moreira, Achyut Adhikari

Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Pecan shells are a rich source of various bioactive compounds with potential antioxidant and antimicrobial properties. This study investigated the effect of pecan variety and method extraction on the antioxidant property of shell extracts. Twenty different varieties of pecan shells were subjected to either aqueous or ethanolic extraction and were examined for total phenolics and antiradical activity. The phenolic content and antiradical activity of shell extracts were significantly (p < 0.05) varied with different pecan cultivars. The total phenolic content of ethanol extracts ranged from 304.2 (Caddo) to 153.54 (Cherokee) mg GAE/g of dry extract and was significantly greater (p < 0.05) than those obtained by aqueous extraction. The antiradical activity of ethanol extracts ranged from 840.6 (Maramec) to 526.74 (Caper Fear) mg TEg−1, while aqueous extracts ranged from 934.9 (Curtis) to 468.3 (Elliot) mg TEg−1. Chemical profiling of the crude and acid hydrolyzed extracts was performed by reverse phase high performance liquid chromatography and flow injection electrospray ionization mass spectrometry. Lignin degradation products such as lignols, dilignols, trilignols, and oligolignols were found to be the major components of tested extracts. Phenolic content and antiradical activity of pecan shell extracts are significantly varied with cultivars and methods of extraction.


Success Of Glover’S Reef Marine Reserve On Queen Conch (Strombus Gigas) Populations In Belize, Gianna Fanelli, Ciera Jarrett, Sara Joralemon Mar 2021

Success Of Glover’S Reef Marine Reserve On Queen Conch (Strombus Gigas) Populations In Belize, Gianna Fanelli, Ciera Jarrett, Sara Joralemon

The Pegasus Review: UCF Undergraduate Research Journal

The queen conch (Strombus gigas) provides important economic, ecological, and societal benefits to local communities throughout the Caribbean. The species, however, has fallen victim to commercial exploitation and overfishing in many areas. In Belize, even with restricted harvesting seasons, size restrictions, and regulations set by the Convention on International Trade in Endangered Species (CITES), harvesting practices have significantly depleted populations. Marine reserves, including the Glover’s Reef Marine Reserve, were established to protect biodiversity and maintain populations of Belize’s natural coral reefs. Utilizing size, frequency, and evidence of harvesting (shell notches), the 2018 Tropical Marine Biology (BSC 3355) course ...


First Description Of Deep Benthic Habitats And Communities Of Oceanic Islands And Seamounts Of The Nazca Desventuradas Marine Park, Chile, Jan M. Tapia-Guerra, Ariadna Mecho, Erin E. Easton, María De Los Ángeles Gallardo, Matthias Gorny, Javier Sellanes Mar 2021

First Description Of Deep Benthic Habitats And Communities Of Oceanic Islands And Seamounts Of The Nazca Desventuradas Marine Park, Chile, Jan M. Tapia-Guerra, Ariadna Mecho, Erin E. Easton, María De Los Ángeles Gallardo, Matthias Gorny, Javier Sellanes

Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Seamounts and oceanic islands of the Chilean Exclusive Economic Zone at the intersection of the Nazca and Salas y Gómez ridges lie within one of the least explored areas in the world. The sparse information available, mainly for seamounts outside Chilean jurisdiction and shallow-water fauna of the Desventuradas Islands, suggests that the area is a hotspot of endemism. This apparent uniqueness of the fauna motivated the creation of the large Nazca-Desventuradas Marine Park (NDMP, ~ 300,000 km2) around the small islands San Felix and San Ambrosio in 2015. We report for the first time a detailed description of benthic microhabitats ...


Editorial: Deep Pelagic Ecosystem Dynamics In A Highly Impacted Water Column: The Gulf Of Mexico After Deepwater Horizon, Tracey Sutton, Kevin M. Boswell, Heather Bracken-Grissom, Jose V. Lopez, Michael Vecchione, Marsh Youngbluth Mar 2021

Editorial: Deep Pelagic Ecosystem Dynamics In A Highly Impacted Water Column: The Gulf Of Mexico After Deepwater Horizon, Tracey Sutton, Kevin M. Boswell, Heather Bracken-Grissom, Jose V. Lopez, Michael Vecchione, Marsh Youngbluth

Marine & Environmental Sciences Faculty Articles

The intermediate-sized midwater fauna (fishes, shrimps, and cephalopods; “micronekton” collectively) are dominant components of the pelagic ocean, which is by far the largest ecosystem type on Earth by several metrics (volume, organismal numbers, biomass, and productivity). Deep-pelagic micronekton, those animals residing in the water column below 200 m depth during the day, are the direct link between plankton and oceanic top predators, and through the linked processes of feeding and daily vertical migration facilitate one of Earth's most important ecosystem services to humans, carbon sequestration. Despite increasing recognition of this importance, a disconnect exists between stewardship and human impact ...


Influence Of Microbial Priming And Seeding Depth On Germination And Growth Of Native Wildflowers, Daniela Barrera, Juan Luera, Kaitlynn Lavallee, Pushpa Soti Mar 2021

Influence Of Microbial Priming And Seeding Depth On Germination And Growth Of Native Wildflowers, Daniela Barrera, Juan Luera, Kaitlynn Lavallee, Pushpa Soti

Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Background: Using native wildflowers for restoring marginal lands has gained considerable popularity. Establishment of wildflowers can be challenging due to several environmental factors. Restoring the microbial community in degraded habitats can potentially result in the native plant performance and habitat restoration. This study was conducted to investigate the impact of native soil microbes and seeding depth on germination of south Texas native wildflowers. Two wildflower species, Ratibida columnifera (Nutt.) (Mexican Hat) and Verbesina encelioides (Cav.) (cowpen daisy), were treated with microbial wash extracted from native soils, and germination rate was recorded for 14-day period. We further analyzed the growth, biomass ...


Environmental Forcing On Zooplankton Distribution In The Coastal Waters Of The Galápagos Islands: Spatial And Seasonal Patterns In The Copepod Community Structure, Diego F. Figueroa Mar 2021

Environmental Forcing On Zooplankton Distribution In The Coastal Waters Of The Galápagos Islands: Spatial And Seasonal Patterns In The Copepod Community Structure, Diego F. Figueroa

Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

The oceanographic setting of the Galápagos Archipelago results in a spatially diverse marine environment suitable for a variety of species with different climatic requirements. The goal of this study is to demonstrate that the community of zooplankton in the Galápagos is highly structured by regional differences in productivity patterns and advective sources. Results are mostly based on biodiversity patterns of the copepod community collected over the Galápagos shelf between 2004 and 2006. Two contrasting marine environments were observed: a nutrientrich upwelling system with a shallow mixed layer and a diatom-dominated phytoplankton community in the west, and a non-upwelling system with ...


Variation In Seagrass-Associated Macroinvertebrate Communities Along The Gulf Coast Of Peninsular Florida: An Exploration Of Patterns And Ecological Consequences, Savanna C. Barry, A. Challen Hyman, Charles A. Jacoby, Laura K. Reynolds, Mark Kowalewski, Thomas K. Frazer Mar 2021

Variation In Seagrass-Associated Macroinvertebrate Communities Along The Gulf Coast Of Peninsular Florida: An Exploration Of Patterns And Ecological Consequences, Savanna C. Barry, A. Challen Hyman, Charles A. Jacoby, Laura K. Reynolds, Mark Kowalewski, Thomas K. Frazer

VIMS Articles

Seagrasses form vast meadows of structurally complex habitat that support faunal communities with greater numbers of species and individuals than nearby unstructured habitats. The Gulf coast of peninsular Florida represents a natural laboratory ideally suited to the study of processes that shape seagrass-associated invertebrate and fish communities within meadows of a single species of seagrass, Thalassia testudinum. This suitability arises from a pronounced structural and chemical gradient that exists over ecologically relevant spatial and temporal scales, as revealed by extensive monitoring of water quality and seagrass. We hypothesized that seagrass-associated invertebrate communities would vary across five estuarine systems spread along ...