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Using Local Fishery Monitoring To Understand Small-Scale Coastal Fisheries In Tanzania, Matthew Robertson 2018 Louisiana State University

Using Local Fishery Monitoring To Understand Small-Scale Coastal Fisheries In Tanzania, Matthew Robertson

LSU Master's Theses

Nearshore marine fisheries provide the main source of protein for nearly 9 million people in the coastal villages of Tanzania, yet for decades the fisheries have shown signs of overexploitation. These fisheries are small-scale and co-managed by local coastal communities in groups known as Beach Management Units (BMUs). BMUs monitor individual fishing trip data (e.g. gear, vessel, taxa); however, these data have only been analyzed in nationally aggregated statistics and to our knowledge, are not presently used in management decision making. The present thesis aimed to identify the forms of data and information that local fishery monitoring can record ...


Analysis Of Temperature And Salinity Effects On Growth And Mortality Of Oysters (Crassostrea Virginica) In Louisiana, Troy Sehlinger 2018 University of New Orleans

Analysis Of Temperature And Salinity Effects On Growth And Mortality Of Oysters (Crassostrea Virginica) In Louisiana, Troy Sehlinger

University of New Orleans Theses and Dissertations

Salinity (S) and temperature (T) control every facet of the eastern oyster (Crassostrea virginica) life cycle, principally reproduction, development, growth, and mortality. Previous studies conducted in in the Breton Sound (BR) and Barataria (BA) estuaries have reported differences in growth and mortality rates between the basins. In the present study, environmental conditions were synchronized to compare growth and mortality rates between basins at similar combinations of T and S. Results indicate that when T and S are the same (synchronized), seasonal oyster growth and mortality rates differ between BR and BA. Seasonal analyses revealed that as salinities increased in both ...


Zooplankton Community Composition In Natural And Artificial Estuarine Passes Of Lake Pontchartrain, Louisiana, Arnaud Kerisit 2018 University of New Orleans

Zooplankton Community Composition In Natural And Artificial Estuarine Passes Of Lake Pontchartrain, Louisiana, Arnaud Kerisit

University of New Orleans Theses and Dissertations

I assessed the composition of zooplankton communities at the three tidal inlets connecting Lake Pontchartrain to Lake Borgne and subsequently to the Gulf of Mexico. The objectives of my research were to better understand the factors contributing to both spatial and temporal differences in zooplankton communities at the three locations. Monthly samplings of the neuston were conducted from September 2009 until April 2011 and then again from September 2012 until May 2013. Sampling consisted of triplicate tows using SeaGear “Bongo” nets. Water quality data along with water turbidity were recorded at each site and during each sampling effort. All specimens ...


Do Density And Food Availability Influence Survivorship And Reproduction In The Freshwater Bivalve, Sphaerium Simile?, Lauren O’Neil 2018 Montclair State University

Do Density And Food Availability Influence Survivorship And Reproduction In The Freshwater Bivalve, Sphaerium Simile?, Lauren O’Neil

Theses, Dissertations and Culminating Projects

The small freshwater bivalve Sphaerium simile, like most “fingernail clams” (Sphaeriidae), does not exhibit a planktonic larval stage but instead offspring are brooded inside the valves of the parent. The species is generally regarded as reproductively specialized, or relatively “K” selected along the r‐K continuum. Multiple offspring can develop simultaneously, but brooding siblings are commonly at different developmental stages. An experiment was conducted to evaluate the relative success of brooding offspring and adults in different adult densities and feeding regimes. A controlled laboratory experiment examined four treatment groups, with adult density and feeding frequency as independent variables. There were ...


Effects Of Drift Macroalgae On Sediment Nitrogen Cycling In Thalassia Testudinum Beds Of St. Joseph Bay, Fl, Erica Strope 2018 Kennesaw State University

Effects Of Drift Macroalgae On Sediment Nitrogen Cycling In Thalassia Testudinum Beds Of St. Joseph Bay, Fl, Erica Strope

Master of Science in Integrative Biology Theses

Anthropogenic nitrogen (N) loading and eutrophication can affect valuable ecosystem services and seagrass habitats by modifying structural and functional aspects of estuarine communities including increasing and prolonging macroalgae blooms. In some contexts, macroalgae may play a key role in N cycling pathways because they can alter sediment chemistry. Previous research has associated drift macroalgae blooms with elevated dissolved inorganic N concentrations in sediments as a result of increased remineralization of organic matter, but drift macroalgae effects on microbial N transformation pathways are not well understood. This study quantified the effects of macroalgae on estuarine N cycling in Thalassia testudinum seagrass ...


Notes On Contributors, 2018 The University of Maine

Notes On Contributors

The Catch

No abstract provided.


On How A Fisherman Supports Fishermen: Oral History With Patrick Shepard, Natalie Springuel 2018 The University of Maine

On How A Fisherman Supports Fishermen: Oral History With Patrick Shepard, Natalie Springuel

The Catch

No abstract provided.


Reflections On The Water, Patricia S. Ranzoni 2018 Bucksport, ME

Reflections On The Water, Patricia S. Ranzoni

The Catch

No abstract provided.


The World Is Your Oyster, Aliya Uteuova 2018 University of Maine

The World Is Your Oyster, Aliya Uteuova

The Catch

No abstract provided.


Editor's Note: The Catch Volume Vi, Catherine Schmitt 2018 The University of Maine

Editor's Note: The Catch Volume Vi, Catherine Schmitt

The Catch

No abstract provided.


Full Issue Volume Vi, 2018 The University of Maine

Full Issue Volume Vi

The Catch

No abstract provided.


Ongoing Transposon-Mediated Genome Reduction In The Luminous Bacterial Symbionts Of Deep-Sea Ceratioid Anglerfishes, Tory Hendry, Lindsay L. Freed, Dana Fadera, Dante Fenolio, Tracey Sutton, Jose Lopez 2018 Cornell University

Ongoing Transposon-Mediated Genome Reduction In The Luminous Bacterial Symbionts Of Deep-Sea Ceratioid Anglerfishes, Tory Hendry, Lindsay L. Freed, Dana Fadera, Dante Fenolio, Tracey Sutton, Jose Lopez

Marine & Environmental Sciences Faculty Articles

Diverse marine fish and squid form symbiotic associations with extracellular bioluminescent bacteria. These symbionts are typically free-living bacteria with large genomes, but one known lineage of symbionts has undergone genomic reduction and evolution of host dependence. It is not known why distinct evolutionary trajectories have occurred among different luminous symbionts, and not all known lineages previously had genome sequences available. In order to better understand patterns of evolution across diverse bioluminescent symbionts, we de novo sequenced the genomes of bacteria from a poorly studied interaction, the extracellular symbionts from the “lures” of deep-sea ceratioid anglerfishes. Deep-sea anglerfish symbiont genomes are ...


Heavy Metal Accumulation In Seagrasses In Southeastern Florida, Erin Smith 2018 Halmos College of Natural Sciences and Oceanography

Heavy Metal Accumulation In Seagrasses In Southeastern Florida, Erin Smith

HCNSO Student Theses and Dissertations

Seagrass beds are among the most ecologically important systems in the marine environment. They provide the primary production to nearby coral reef and mangrove communities, and seagrasses comprise a large component of the diets of many marine organisms including fishes, small invertebrate species, and many protected species such as manatees and sea turtles. This consumption provides a pathway for many contaminants to enter the marine food web via the seagrasses. The coastal location of seagrass beds causes them to be especially susceptible to anthropogenic pollution, including accumulation of heavy metals, which has been shown to have many adverse health effects ...


Comparative Analysis Of Foraging Behavior And Bite Mechanics Reveals Complex Functional Diversity Among Caribbean Parrotfishes, Thomas C. Adam, Alain Duran, Corinne E. Fuchs, Madelyn V. Roycroft, Maria C. Rojas, Benjamin I. Ruttenberg, Deron E. Burkepile 2018 University of California, Santa Barbara

Comparative Analysis Of Foraging Behavior And Bite Mechanics Reveals Complex Functional Diversity Among Caribbean Parrotfishes, Thomas C. Adam, Alain Duran, Corinne E. Fuchs, Madelyn V. Roycroft, Maria C. Rojas, Benjamin I. Ruttenberg, Deron E. Burkepile

Benjamin Ruttenberg

Parrotfishes are a diverse group of herbivores that can influence benthic community dynamics and ecosystem function on coral reefs. Different species and size classes of parrotfishes vary in their feeding ecology and can impact reef ecosystems in distinct ways. We documented differences in the feeding ecology of 9 species of parrotfishes in the Florida Keys National Marine Sanctuary (FKNMS). Many of the key differences can be summarized by assigning species to functional groups (e.g. scrapers, excavators, croppers, macroalgae browsers), which are differentially responsible for carrying out specific ecological processes. For example, we found that Sparisoma viride, Scarus coelestinus, Sc ...


2018 Glynn Et Al State Of Corals And Coral Reefs Of The Galapagos Islands.Pdf, Peter W. Glynn, Joshua Feingold, Andrew Baker, Bernhard Riegl 2018 Rosenstiel School of Marine and Atmospheric Science

2018 Glynn Et Al State Of Corals And Coral Reefs Of The Galapagos Islands.Pdf, Peter W. Glynn, Joshua Feingold, Andrew Baker, Bernhard Riegl

Joshua Feingold

Coral populations and structural coral reefs have undergone severe reductions and losses respectively over large
parts of the Galápagos Islands during and following the 1982–83 El Niño event. Coral tissue loss amounted to
95% across the Archipelago. Also at that time, all coral reefs in the central and southern islands disappeared
following severe degradation and eventual collapse due primarily to intense bioerosion and low recruitment. Six
sites in the southern islands have demonstrated low to moderate coral community (scattered colonies, but no
carbonate framework) recovery. The iconic pocilloporid reef at Devil's Crown (Floreana Island) experienced
recovery to 2007 ...


Trophic Shifts Introduced To The Saco River Estuary By A Central Secondary Consumer, The Invasive European Green Crab (Carcinus Maenas), Andrew Paul Davidsohn 2018 University of New England

Trophic Shifts Introduced To The Saco River Estuary By A Central Secondary Consumer, The Invasive European Green Crab (Carcinus Maenas), Andrew Paul Davidsohn

All Theses And Dissertations

The European green crab (Carcinus maenus) is one of the most notorious invasive species found along the East coast of the United States. Green crabs were introduced to the US in the 1800s when they supposedly rode in ballast water across the Atlantic Ocean. Green crabs are native to the Atlantic coasts of Europe and Northern Africa. Once established on the Atlantic coast of North America, they started to migrate mostly north, and will continue to do so with warming waters due to climate change. (Glude 1955). Warmer winters will lead to greater crab egg survival, increasing the green crabs ...


Desalination Concentrate Disposal: Ecological Effects And Sustainable Solutions, Ryan Hanley 2018 University of Washington – Tacoma

Desalination Concentrate Disposal: Ecological Effects And Sustainable Solutions, Ryan Hanley

Global Honors Theses

Freshwater availability is a growing global concern, and desalination is often presented as the solution, but from this important technology comes issues of toxic waste. Ecosystems are delicate areas that contain species adapted to that specific location, and any chemical or physical changes can disrupt the fitness of species. The concentrate byproduct waste from desalination plants is toxic to species if the concentrate is not compatible with the receiving water body. A critical review of scientific articles, industry-leading books, conversations with industry experts, and information from the American Membrane Technology Association conference was used to analyze the current knowledge. Species ...


Ms Analysis Of A Dilution Series Of Bacteria: Phytoplankton To Improve Detection Of Low Abundance Bacterial Peptides, Emma Timmins-Schiffman, Molly P. Mikan, Ying Sonia Ting, H. Rodger Harvey, Brook L. Nunn 2018 Old Dominion University

Ms Analysis Of A Dilution Series Of Bacteria: Phytoplankton To Improve Detection Of Low Abundance Bacterial Peptides, Emma Timmins-Schiffman, Molly P. Mikan, Ying Sonia Ting, H. Rodger Harvey, Brook L. Nunn

OEAS Faculty Publications

Assigning links between microbial activity and biogeochemical cycles in the ocean is a primary objective for ecologists and oceanographers. Bacteria represent a small ecosystem component by mass, but act as the nexus for both nutrient transformation and organic matter recycling. There are limited methods to explore the full suite of active bacterial proteins largely responsible for degradation. Mass spectrometry (MS)-based proteomics now has the potential to document bacterial physiology within these complex systems. Global proteome profiling using MS, known as data dependent acquisition (DDA), is limited by the stochastic nature of ion selection, decreasing the detection of low abundance ...


An Assessment Of Sea Scallop Abundance And Distribution In The Nantucket Lightship Closed Area And Surrounds: Final Report, David B. Rudders, Sally Roman 2018 Virginia Institute of Marine Science

An Assessment Of Sea Scallop Abundance And Distribution In The Nantucket Lightship Closed Area And Surrounds: Final Report, David B. Rudders, Sally Roman

Reports

For the sea scallop, Placopecten magellanicus, the concepts of space and time have emerged as the basis of an effective management tool. The strategy of closing or limiting activities in certain areas for specific lengths of time has gained support as a method to conserve and enhance the scallop resource. In the last decade, rotational area management has provided a mechanism to protect juvenile scallops from fishing mortality by closing areas based upon scallop abundance and age distribution. Approximately half of the sea scallop industry’s current annual landings come from areas under this rotational harvest strategy. While this represents ...


A Cooperative High Precision Dredge Survey To Assess The Mid-Atlantic Sea Scallop Resource : Final Report, David B. Rudders, Sally Roman 2018 Virginia Institute of Marine Science

A Cooperative High Precision Dredge Survey To Assess The Mid-Atlantic Sea Scallop Resource : Final Report, David B. Rudders, Sally Roman

Reports

For the sea scallop, Placopecten magellanicus, the concepts of space and time have emerged as the basis of an effective management tool. The strategy of closing or limiting activities in certain areas for specific lengths of time has gained support as a method to conserve and enhance the scallop resource. In the last decade, rotational area management has provided a mechanism to protect juvenile scallops from fishing mortality by closing areas based upon scallop abundance and age distribution. Approximately half of the sea scallop industry’s current annual landings come from areas under this rotational harvest strategy. While this represents ...


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