An Agent-Based Modeling Approach For Predicting The Behavior Of Bighead Carp (Hypophthalmichthys Nobilis) Under The Influence Of Acoustic Deterrence, Joey Gaudy, Craig Garzella
Annual Symposium on Biomathematics and Ecology: Education and Research
No abstract provided.
A Food Web Modeling Assessment Of Asian Carp Impacts In The Middle And Upper Mississippi River, Usa, 2019 Southeast Missouri State University
A Food Web Modeling Assessment Of Asian Carp Impacts In The Middle And Upper Mississippi River, Usa, Nicholas W. Kramer, Quinton E. Phelps, Clay L. Pierce, Michael E. Colvin
Clay L. Pierce
The invasion of non-native fishes has caused a great detriment to many of our native fishes. Since the introduction of invasive carps, such as Silver, Bighead, Common and Grass Carp, managers and researcher have been struggling to remove these species while also hypothesizing the detriment of further invasion. This study developed a food web model of four locations on the Mississippi River and used those models to assess the impacts of two scenarios: carp removal and carp invasion. In the Middle Mississippi River where these invasive carps are already present, the models found that it would take a sustained exploitation ...
The Analysis Of Cyanide And Its Metabolites In Biological Samples, 2019 South Dakota State University
The Analysis Of Cyanide And Its Metabolites In Biological Samples, Brian A. Logue, Diane M. Hinkens
Cyanide is a toxic chemical that may be introduced to living organisms as a result of both legal and illicit uses of cyanide. Exposure to cyanide can be verifi ed by analyzing cyanide or one of its break-down products from biological samples. This verifi cation is important for medical, law-enforcement, forensic, research, and veterinary purposes. This review will identify common problems associated with the analysis of cyanide and its metabolites, discuss current bioanalytical techniques used for verifi cation of cyanide exposure, and briefl y address the metabolism and toxicokinetics of cyanide and its break-down products in biological systems.
Evaluating Recruitment Of American Eel, Anguilla Rostrata, In The Potomac River (Spring 2019), 2019 Virginia Institute of Marine Science
Evaluating Recruitment Of American Eel, Anguilla Rostrata, In The Potomac River (Spring 2019), Troy D. Tuckey, Mary C. Fabrizio
American Eel (Anguilla rostrata) is a valuable commercial species along the Atlantic coast of North America from New Brunswick to Florida. Landings from Chesapeake Bay typically represent 60% of the annual United States commercial harvest (ASMFC 2012). American Eel is also important to the recreational fishery as it is often used live as bait for Striped Bass (Morone saxatilis) and Cobia (Rachycentron canadum). In 2016, Chesapeake Bay commercial landings of American Eel (728,717 lbs) were 78% of the U.S. landings (personal communication from the National Marine Fisheries Service, Fisheries Statistics Division). Since the 1980s, harvest along the U ...
Property Rights And The Efficient Extraction Of Common Pool Resources: Evidence From West Coast Groundfish, Keith S. Evans, Carl Lian, Quinn Weninger
Economics Working Papers
Evaluating efficiency gains from adopting property rights-based fisheries management is data intensive, complicated by delays in adjusting to economic incentives implicit in output control regulations, and potentially confounded by the effects of changing stock abundance and other fundamentals. This paper evaluates harvesting efficiency for the universe of vessel participants in the West Coast groundfish trawl fishery two years prior to and six years following introduction of individual fishing quota (IFQ) regulations. Our methods control for delayed fleet restructuring and confounding effects of changing groundfish stock abundance. We find that under IFQs, redundant vessel capital exited the groundfish fishery at a ...
Dataset For The Environmental Risk Assessment Of Chlorpyrifos To Chinook Salmon In Four Rivers Of Washington State, United States, 2019 Western Washington University, USA
Dataset For The Environmental Risk Assessment Of Chlorpyrifos To Chinook Salmon In Four Rivers Of Washington State, United States, Wayne G. Landis, Valerie R. Chu, Scarlett Graham, Meagan J. Harris, April J. Markiewicz, Chelsea J. Mitchell, Katherine E. Stackelberg, John Stark
Environmental Sciences Faculty and Staff Publications
Data files available below.
This data set is in support of Landis et al (in press) The integration of chlorpyrifos acetylcholinesterase inhibition, water temperature and dissolved oxygen concentration into a regional scale multiple stressor risk assessment estimating risk to Chinook salmon in four rivers in Washington State, USA. DOI: 10.1002/ieam.4199. In this research We estimated the risk to populations of Chinook salmon (Oncorhynchus tshawytscha) due to chlorpyrifos (CH), water temperature (WT) and dissolved oxygen concentrations (DO) in four watersheds in Washington State, USA. The watersheds included the Nooksack and Skagit Rivers in the Northern Puget Sound, the ...
The Development And Evaluation Of Small Specialized Turtle Excluder Devices To Reduce Sea Turtle Bycatch In Various Small Shrimp Gears, Meghan P. Gahm
University of New Orleans Theses and Dissertations
In the southeastern United States, skimmer trawls, pusher-head trawls, wing nets, and small try nets (headrope length less than 12-ft (3.66-m)) are exempt from using a turtle excluder device (TED) and instead must adhere to tow time restrictions as a mode to mitigate sea turtle bycatch. However, observer and stranding data indicate that these tow times may often be exceeded and result in mortality of sea turtles. The National Marine Fisheries Service (NMFS) published a notice of proposed rulemaking in December 2016 to extend TED requirements to other trawl types, however there has been limited development of specialized TEDs ...
It’S About Time: A Synthesis Of Changing Phenology In The Gulf Of Maine Ecosystem, 2019 Virginia Institute of Marine Science
It’S About Time: A Synthesis Of Changing Phenology In The Gulf Of Maine Ecosystem, Md Staudinger, Ke Mills, Et Al, Ds Johnson, Et Al
The timing of recurring biological and seasonal environmental events is changing on a global scale relative to temperature and other climate drivers. This study considers the Gulf of Maine ecosystem, a region of high social and ecological importance in the Northwest Atlantic Ocean and synthesizes current knowledge of (a) key seasonal processes, patterns, and events; (b) direct evidence for shifts in timing; (c) implications of phenological responses for linked ecological-human systems; and (d) potential phenology-focused adaptation strategies and actions. Twenty studies demonstrated shifts in timing of regional marine organisms and seasonal environmental events. The most common response was earlier timing ...
Combined Effects Of Acute Temperature Change And Elevated Pco2 On The Metabolic Rates And Hypoxia Tolerances Of Clearnose Skate (Rostaraja Eglanteria), Summer Flounder (Paralichthys Dentatus), And Thorny Skate (Amblyraja Radiata), 2019 Virginia Institute of Marine Science
Combined Effects Of Acute Temperature Change And Elevated Pco2 On The Metabolic Rates And Hypoxia Tolerances Of Clearnose Skate (Rostaraja Eglanteria), Summer Flounder (Paralichthys Dentatus), And Thorny Skate (Amblyraja Radiata), Gail D. Schwieterman, Daniel P. Crear, Brooke N. Anderson, Danielle R. Lavoie, James A. Sulikowski, Peter G. Bushnell, Richard W. Brill
Understanding how rising temperatures, ocean acidification, and hypoxia affect the performance of coastal fishes is essential to predicting species-specific responses to climate change. Although a population’s habitat influences physiological performance, little work has explicitly examined the multi-stressor responses of species from habitats differing in natural variability. Here, clearnose skate (Rostaraja eglanteria) and summer flounder (Paralichthys dentatus) from mid-Atlantic estuaries, and thorny skate (Amblyraja radiata) from the Gulf of Maine, were acutely exposed to current and projected temperatures (20, 24, or 28 °C; 22 or 30 °C; and 9, 13, or 15 °C, respectively) and acidification conditions (pH 7.8 ...
Operationalizing Ecological Resilience Concepts For Managing Species And Ecosystems At Risk, 2019 USDA FS, Reno, NV
Operationalizing Ecological Resilience Concepts For Managing Species And Ecosystems At Risk, Jeanne C. Chambers, Craig R. Allen, Samuel A. Cushman
Nebraska Cooperative Fish & Wildlife Research Unit -- Staff Publications
This review provides an overview and integration of the use of resilience concepts to guide natural resources management actions. We emphasize ecosystems and landscapes and provide examples of the use of these concepts from empirical research in applied ecology. We begin with a discussion of definitions and concepts of ecological resilience and related terms that are applicable to management. We suggest that a resilience-based framework for management facilitates regional planning by providing the ability to locate management actions where they will have the greatest benefits and determine effective management strategies. We review the six key components of a resilience-based framework ...
Landscape Edges Shape Dispersal And Population Structure Of A Migratory Fish, 2019 University of Nebraska - Lincoln
Landscape Edges Shape Dispersal And Population Structure Of A Migratory Fish, Mark A. Kaemingk, S. E. Swearer, S. J. Bury, J. S. Shima
Nebraska Cooperative Fish & Wildlife Research Unit -- Staff Publications
Many freshwater organisms have a life-history stage that can disperse through seawater. This has obvious benefits for colonization and connectivity of fragmented sub-populations, but requires a physiologically challenging migration across a salinity boundary. We consider the role of landscape boundaries between freshwater and seawater habitats, and evaluate their potential effects on traits and developmental histories of larvae and juveniles (i.e., dispersing life-history stages) of an amphidromous fish, Galaxias maculatus. We sampled juvenile fish on their return to 20 rivers in New Zealand: 10 rivers had abrupt transitions to the sea (i.e., emptying to an open coastline); these were ...
Effects Of Dietary Taurine Level On Visual Function In European Sea Bass (Dicentrarchus Labrax), 2019 Virginia Institute of Marine Science
Effects Of Dietary Taurine Level On Visual Function In European Sea Bass (Dicentrarchus Labrax), Richard W. Brill, Andrij Z. Horodysky, Allen R. Place, Mary E. Larkin, Renate Reimschuessel
Dietary insufficiencies have been well documented to decrease growth rates and survival (and therefore overall production) in fish aquaculture. By contrast, the effects of dietary insufficiencies on the sensory biology of cultured fish remains largely unstudied. Diets based solely on plant protein sources could have advantages over fish-based diets because of the cost and ecological effects of the latter, but plant proteins lack the amino acid taurine. Adequate levels of taurine are, however, necessary for the development of a fully functional visual system in mammals. As part of ongoing studies to determine the suitability of plant-based diets, we investigated the ...
Plasticity In Standard And Maximum Aerobic Metabolic Rates In Two Populations Of An Estuarine Dependent Teleost, Spotted Seatrout (Cynoscion Nebulosus), 2019 Virginia Institute of Marine Science
Plasticity In Standard And Maximum Aerobic Metabolic Rates In Two Populations Of An Estuarine Dependent Teleost, Spotted Seatrout (Cynoscion Nebulosus), Jingwei Song, Richard W. Brill, Jan R. Mcdowell
We studied the effects of metabolic cold adaptation (MCA) in two populations of a eurythermal species, spotted seatrout (Cynoscion nebulosus) along the U.S. East Coast. Fish were captured from their natural environment and acclimated at control temperatures 15 °C or 20 °C. Their oxygen consumption rates, a proxy for metabolic rates, were measured using intermittent flow respirometry during acute temperature decrease or increase (2.5 °C per hour). Mass-specific standard metabolic rates (SMR) were higher in fish from the northern population across an ecologically relevant temperature gradient (5 °C to 30 °C). SMR were up to 37% higher in ...
Aquatic Invasive Species Change Ecosystem Services From The World's Largest Wild Sockeye Salmon Fisheries In Alaska, 2019 University of Alaska Anchorage
Aquatic Invasive Species Change Ecosystem Services From The World's Largest Wild Sockeye Salmon Fisheries In Alaska, Tobias Schwoerer, Joseph M. Little, Milo D. Adkison
Journal of Ocean and Coastal Economics
This study combines a multi-method approach to structured expert judgment with market valuation to forecast fisheries damages from introduced invasive species. The method is applied to a case study of Alaska’s first submersed aquatic invasive plant, Elodea spp., threatening Alaska’s salmon fisheries. Assuming that Elodea spp. remains unmanaged, estimated mean damages to commercial sockeye fisheries aggregated across Alaska amount to a potential $159 million annually with a 5% chance of exceeding $577 million annually ($2015 USD). The associated mean loss of natural capital amounts to $5.1 billion cumulatively over the next 100 years reaching $400 million after ...
Any Port In A Storm: Vessel Activity And The Risk Of Iuu-Caught Fish Passing Through The World’S Most Important Fishing Ports, 2019 Poseidon Aquatic Resources Management Ltd, Lymington, Hampshire, United Kingdom
Any Port In A Storm: Vessel Activity And The Risk Of Iuu-Caught Fish Passing Through The World’S Most Important Fishing Ports, Gilles Hosch, Bradley Soule, Max Schofield, Trevor Thomas, Charles Kilgour, Tim Huntington
Journal of Ocean and Coastal Economics
This study assesses the risk of fish from illegal, unregulated and unreported (IUU) sources passing through the world’s most important fishing ports and explores the drivers of this risk.
Like previous studies it has attempted to rank ports and States based on landings and vessel visits reported by governments by using Automatic Identification System (AIS) positional data transmitted by fishing and fish carrier vessels to identify the locations of ports and rank them based on the frequency of visits by foreign-flagged and domestic-flagged vessels. It advances our thinking in that (i) the analysis includes an estimation of the hold ...
Age Structure And Growth Rate In The Sea Scallop Placopecten Magellanicus, 2019 Virginia Institute of Marine Science
Age Structure And Growth Rate In The Sea Scallop Placopecten Magellanicus, Roger Mann, David Rudders
The overall project objective is to describe age structure and growth of scallops from the Georges Bank and Mid-Atlantic regions. There are three component objectives; (1) age structure and growth during the 1977- 1999 period using archived material stored at NEFSC Woods Hole; (2) age structure and growth of scallops collected over the latitudinal and bathymetric range of the US commercial fishery in 2012 and 2013 (material archived at VIMS from RSA studies); and (3) age structure and growth of scallops collected in 2017 assessment surveys by co-PI Rudders.
A Low-Water Crossing Impacts Movement Behavior Of Northern Hog Suckers In An Ozark Stream, 2019 Missouri State University
A Low-Water Crossing Impacts Movement Behavior Of Northern Hog Suckers In An Ozark Stream, Jeff Michael Williams
MSU Graduate Theses
Low-water crossings are common in Ozark streams and can restrict longitudinal movement in fishes. I evaluated the impact of the Cedar Grove low-water crossing on Northern Hog Sucker Hypentelium nigricans movement behavior in Missouri’s Current River. Radio-tagged fish upstream (henceforth ‘above’; N = 24) and downstream (henceforth ‘below’; N = 26) of the crossing were followed monthly for a year to assess 1) frequency of fish passage, 2) direction of passage, and 3) maximum displacement of mobile (displacement > 1 km) fish. I then looked at diel movement behavior of stationary (displacement < 1 km) fish near the crossing to assess 1) total displacement and linear home range, 2) direction of diel displacement, and 3) habitat use. Passage was limited to four below-tagged fish and was more likely to occur in the upstream direction and during high flow. The direction of maximum displacement in mobile fish was primarily away from the crossing, and below-tagged fish exhibited over seven times greater displacement than above-tagged fish. Diel displacement and linear home range were greater in above-tagged fish, likely due to degraded upstream habitat that increased the distance between day and night habitats. My results suggest the crossing is a semi-permeable barrier that also affects local-scale movement behavior of Northern Hog Suckers. Alternatives to the low-water crossings at Cedar Grove, such as modifying the side channel into a fish bypass, should be considered to promote natural longitudinal movement of fishes in the upper Current River.
Modeling Quantitative Value Of Habitats For Marine And Estuarine Populations, 2019 Virginia Institute of Marine Science
Modeling Quantitative Value Of Habitats For Marine And Estuarine Populations, Romauld N. Lipcius, David B. Eggleston, F.J. Fodrie, Et Al
Coastal habitats (e.g., seagrass beds, shallow mud and sand flats) strongly influence survival, growth, and reproduction of exploited marine fish and invertebrate species. Many of these species have declined over the past decades, coincident with widespread degradation of coastal habitats, such that an urgent need exists to model the quantitative value of coastal habitats to their population dynamics. Demand for habitat considerations will increase as fisheries management contends with habitat issues in stock assessments and management in general moves towards a more ecosystem-based approach. The modeling of habitat function to support fishery species has, to date, been done on ...
A Fishy Problem: Effects Of Atlantic Salmon Farming In The Pacific Ocean, 2019 Fordham University
A Fishy Problem: Effects Of Atlantic Salmon Farming In The Pacific Ocean, Madeleine A. Griffith
Student Theses 2015-Present
In this report, I explore the historical, climatological, economic, and ethical issues created by the contemporary industrial salmon farming practices off Pacific coast of the United States and Canada. Chapter 1 utilizes a variety of sources from Stephen Hume’s A Stain upon the Sea to Miller’s Living in the Environment, to examine the integral part salmon plays in both freshwater and marine ecosystems, the ecosystem services salmon contribute in wild and farmed settings, and the trends in salmon consumption around the world. Chapter 2 examines the historically relevant role salmon held among indigenous societies and how that role ...
Examining Citizens' Preferences For Aquaculture Using Discrete Choice Experiments, 2019 University of Maine
Examining Citizens' Preferences For Aquaculture Using Discrete Choice Experiments, Olga Bredikhina
Electronic Theses and Dissertations
Over the last few decades, discrete choice experiments (DCEs) have become increasingly popular across different subfields of economics as a way to elicit citizens‟ stated preferences for product and service attributes as well as various environmental and infrastructure features. The DCE framework could be seen as a time- and cost-effective alternative to the revealed preferences framework that is based on data obtained using transactions observed in real-world markets. DCEs offer the advantage over revealed preferences data because they allow learning about consumer preferences for hypothetical products or product attributes without bearing the costs of introducing new products to the market ...