From Disaster To Sustainability: The Story Of The Pacific Groundfish, 2017 Utah State University
From Disaster To Sustainability: The Story Of The Pacific Groundfish, Matthew Richards
All Graduate Plan B and other Reports
This paper reviews the circumstances that led to the collapse of the Pacific groundfish fishery and the steps that fishery managers took to curb over-harvesting and bring the fishery back to sustainability. Fishery managers utilized various management tools such as a vessel buyback program, regulatory mechanisms, and market strategies to improve the available data on the fishery, improve safety for fishermen, and reduce harvest rates and overcapitalization. By employing a diverse range of measures, managers developed a system by with they successfully balanced conservation objectives and minimized adverse impacts to fishing communities. Overcapitalization and overharvest continue to degrade the health ...
The Effect Of Water Levels On Crayfish Aggression, 2017 Pepperdine University
The Effect Of Water Levels On Crayfish Aggression, Emory B. Johnson, Sarah E. Blase
Seaver College Research And Scholarly Achievement Symposium
Crayfish are a very prevalent invasive species that affect many different environments all over the world. Crayfish, specifically Procambarus clarkii, are an invasive species that have currently taken a foothold in the Santa Monica mountains and are threatening native stream species. There is currently a severe drought occurring in the Santa Monica mountains. The drought has been reshaping many aquatic environments by limiting space and resources such as food and shelter. Crayfish are a very aggressive species and adversely affect the habitat they inhabit by rapidly colonizing, burrowing, and their voracious diets. Due to the adverse effects crayfish can have ...
Adrift In A Sea Of Information About Sustainable Seafood: The Maine Consumer Perspective, 2017 Maine Sea Grant
Adrift In A Sea Of Information About Sustainable Seafood: The Maine Consumer Perspective, Catherine V. Schmitt
The desire for a sustainable seafood industry that protects the environment and the future of fishing is certainly of interest to consumers, but even here there are conflicting standards, as Catherine Schmitt explores in this article.
An Overview Of Aquaponic Systems: Hydroponic Components, 2017 Iowa State University
An Overview Of Aquaponic Systems: Hydroponic Components, D. Allen Pattillo
NCRAC Technical Bulletins
Aquaponics is the union of hydroponics (growing plants without soil) and aquaculture (farming fish or other aquatic organisms) for a fast, efficient method of producing both plant and fish crops. Fish waste from the aquaculture portion of the system, is broken down by bacteria into dissolved nutrients (e.g., nitrogen and phosphorus compounds) that plants utilize to grow in a hydroponic unit. This nutrient removal not only improves water quality for the fish but also decreases overall water consumption by limiting the amount released as effluent.
Fisheries & Stream Quality Update For The Kankakee River Basin, 2017 Illinois Department of Natural Resources
Fisheries & Stream Quality Update For The Kankakee River Basin, Stephen Pescitelli
Kankakee River Watershed Conference
Author keywords: stream quality, index of biotic integrity, walleye stocking
Scholarship domain: community application
Oyster Shells, Clutching, And Oyster Farming, 2017 University of Rhode Island
Oyster Shells, Clutching, And Oyster Farming, Michael A. Rice
Michael A Rice
The Mixed Source Chinook Salmon Fishery In Lake Huron: A Comparison Of Spawning And Foraging Habitat Use By Naturalized And Hatchery Fish, 2017 The University of Western Ontario
The Mixed Source Chinook Salmon Fishery In Lake Huron: A Comparison Of Spawning And Foraging Habitat Use By Naturalized And Hatchery Fish, Stephen A.C. Marklevitz
Electronic Thesis and Dissertation Repository
Chinook salmon (Oncorhynchus tshawytscha) were introduced into the Great Lakes to restore top-down control of the food web and create new recreational fisheries. Soon after introduction, naturalized spawning populations became established, and with continued stocking of hatchery fish, created a mixed source fishery. My research provides new ecological information about the contributions of naturalized fish to the mixed source Chinook salmon fishery in Lake Huron. I examined spawning and foraging habitat use by naturalized and hatchery Chinook salmon using multiple methods to identify sources of individual fish (external tags, hatchery fin clips, and otolith microchemistry). In the Sydenham River, Ontario ...
Pseudopecoelus Mccauleyi N. Sp. And Podocotyle Sp. (Digenea: Opecoelidae) From The Deep Waters Off Oregon And British Columbia With An Updated Key To The Species Of Pseudopecoelus Von Wicklen, 1946 And Checklist Of Parasites From Lycodes Cortezianus (Perciformes: Zoarcidae), 2017 Corpus Christi, Texas
Pseudopecoelus Mccauleyi N. Sp. And Podocotyle Sp. (Digenea: Opecoelidae) From The Deep Waters Off Oregon And British Columbia With An Updated Key To The Species Of Pseudopecoelus Von Wicklen, 1946 And Checklist Of Parasites From Lycodes Cortezianus (Perciformes: Zoarcidae), Charles K. Blend, Norman O. Dronen, Gábor R. Rácz, Scott Lyell Gardner
Scott Gardner Publications & Papers
Pseudopecoelus mccauleyi n. sp. (Opecoelidae: Opecoelinae) is described from the intestine of the bigfin eelpout, Lycodes cortezianus (Gilbert, 1890) (Perciformes: Zoarcidae), collected at 200–800 m depths in the northeastern Pacific Ocean off Oregon and Vancouver Island, British Columbia. The new species is distinguished by possessing a unique combination of the following diagnostic characters: vitelline fields that extend to the posterior margin of the ventral sucker; a slender, tubular and sinuous seminal vesicle that extends some distance into the hindbody; an unspecialized, protuberant ventral sucker; a genital pore at pharynx level; lobed to deeply multilobed testes; a lobed ovary; and ...
Estimating The Number Of Recreational Anglers For A Given Waterbody, 2017 University of Nebraska - Lincoln
Estimating The Number Of Recreational Anglers For A Given Waterbody, Kevin L. Pope, Larkin A. Powell, Brian S. Harmon, Mark A. Pegg, Christopher J. Chizinski
Nebraska Cooperative Fish & Wildlife Research Unit -- Staff Publications
Knowing how many anglers use a given body of water is paramount for understanding components of a fishery related to angling pressure and harvest, yet no study has attempted to provide an estimate of the population size of anglers for a given waterbody. Here, we use information from creel surveys in a removal-sampling framework to estimate total numbers of anglers using six reservoirs in Nebraska, USA, and we examine the influence of the duration of sampling period on those estimates. Population estimates (N ± SE) of unique anglers were 2050 ± 45 for Branched Oak Lake, 1992 ± 29 for Calamus Reservoir, 929 ...
The Rise Of Double-Crested Cormorants, 2016 USDA National Wildlife Research Center
The Rise Of Double-Crested Cormorants, Brian S. Dorr, David G. Fielder
Brian S Dorr
Health Transfers: An Application Of Health-Health Analysis To Assess Food Safety Regulations, 2016 University of New Hampshire
Health Transfers: An Application Of Health-Health Analysis To Assess Food Safety Regulations, Fred Kuchler, Jackqueline L. Teague, Richard A. Williams, Don W. Anderson
RISK: Health, Safety & Environment
The authors apply a Health-Health Analysis to risks associated with harvesting Gulf oysters to evaluate that approach to managing health and safety risks.
Early Nutritional Programming To Enhance The Utilization Of Plant Based Diets In Fish (Largemouth Bass, Micropterus Salmoides), 2016 Kentucky State University
Early Nutritional Programming To Enhance The Utilization Of Plant Based Diets In Fish (Largemouth Bass, Micropterus Salmoides), Maya Rene Jackson, Cora Teets, Amit Kumar Yadav, Waldemar Rossi
Aquaculture has been the fastest growing animal food-producing sector for over half a century. Sustainable aquaculture should include replacement of fish-based feed sources by plant-based ingredients. However, this approach is often impeded by poor growth in carnivorous fish such as largemouth bass (LMB, Micropterus salmoides) fed high levels of plant-based protein. Therefore, our overall goal of the present work was to develop alternative methods of utilizing the plant-based diets (PBD) for sustainable LMB production. When fish is exposed to PBD early in their life, they may accept them more efficiently at later stages (so called Nutritional Programing, NP). Therefore, we ...
Fish Names Variability Traces The Geo-Historical Dynamics Of Moroccan Fishermen Communities, 2016 Institut National de Recherche Halieutique - Morocco
Fish Names Variability Traces The Geo-Historical Dynamics Of Moroccan Fishermen Communities, Hicham Masski, Abdelaziz Ait Hammou
Journal of Ecological Anthropology
Fish vernacular names in Morocco needs a structuring system. Though used widely, these names are highly variable and do not necessarily meet trade requirements. The 138 species considered in this study have 691 vernacular names and the vernacular names lists of the 16 study sites show large disparities. The most part of this variability is of linguistic origin coming from four geographic regions and thus cultural groups. Even if possible, the adoption of a unique standard, which is the goal of the national fisheries regulation authorities, might encounter resistance to its dissemination throughout fishermen and the local population.
Understanding The Impact Of Commercial Harvest On White Suckers (Catostomus Commersonii) In Maine, 2016 University of Maine - Main
Understanding The Impact Of Commercial Harvest On White Suckers (Catostomus Commersonii) In Maine, Megan A. Begley
Electronic Theses and Dissertations
The State of Maine issues an unlimited number of commercial permits for the harvest of White Suckers Catostomus commersonii in Maine’s inland waters. The fishery provides a necessary source of fresh lobster Homarus americanus bait to coastal communities at a time when other bait sources are scarce. The impacts of the increasing number of permits and subsequent numbers of fishermen on the white sucker population is unknown. The Maine Department on Inland Fisheries and Wildlife (MDIFW) has closed a number of waters due to concerns that overfishing and incidental catch of other fish species may occur.
In Chapter 1 ...
Testing Raised Food Lines In Virginia's Striped Bass Fishery: A Gear Based Method Of Reducing Sturgeon Interactions In Anchored Gillnets, 2016 Virginia Institute of Marine Science
Testing Raised Food Lines In Virginia's Striped Bass Fishery: A Gear Based Method Of Reducing Sturgeon Interactions In Anchored Gillnets, Thomas J. Murray
Working with commercial fishermen and scientists, the project evaluated the efficacy of altering net designs to achieve reductions in incidental contacts with protected species while maintaining harvest efficiency. In addition project participants assisted in the transfer of the new gear technology to industry as a gear-based method to reduce sturgeon interactions in gillnets targeting striped bass. The intent was to raise the effective fishing depth (webbing) of anchored gillnets interactions with protected Atlantic sturgeon while not impacting direct harvest of striped bass, the target species. The gear was shown to not impact Catch Per Unit Effort (CPUE) of the directed ...
Calibration Of Vims Research Vessel Catch Data To Ensure Continuity Of Recruitment Indices For The Chesapeake Bay Region, 2016 Virginia Institute of Marine Science
Calibration Of Vims Research Vessel Catch Data To Ensure Continuity Of Recruitment Indices For The Chesapeake Bay Region, Mary C. Fabrizio, Troy D. Tuckey
The VIMS Juvenile Fish Trawl Survey, which has been in operation since 1955, has undergone considerable changes to the sampling gear, location of sampling sites, and the methodology used to select sampling sites. Recently, a new vessel, the R/V Tidewater, replaced the R/V Fish Hawk, which had been in service for 25 years. In addition to the change in vessel, a new net was used; this net design is more robust to deployment methods and performs more consistently under varying environmental conditions. Therefore, a calibration study was conducted whereby the two research vessels with different nets fished in ...
Comparison Of Predicted And Observed Dioxin Levels In Fish: Implications For Risk Assessment, 2016 University of New Hampshire
Comparison Of Predicted And Observed Dioxin Levels In Fish: Implications For Risk Assessment, Judy S. Lakind, Daniel Q. Naiman
RISK: Health, Safety & Environment
After comparing sampled and modelled dioxin levels in the tissue of fish near pulp and paper mill discharges, the authors argue that, until an improved bioaccumulation model is incorporated into EPA's Risk assessment process, determination of human health Risks associated with consuming dioxin-contaminated fish should be based on sampling.
Assessing Ecological And Economic Effects Of Derelict Fishing Gear: A Guiding Framework, 2016 CSS-Dynamac, Inc.
Assessing Ecological And Economic Effects Of Derelict Fishing Gear: A Guiding Framework, Christopher F.G. Jeffrey, Kirk J. Havens, H. Ward Slacum Jr., Donna Marie Bilkovic, Danielle Zaveta, Andrew M. Scheld, Sean Willard, John D. Evans
Developing standardized protocols to assess the ecological and socio-economic effects of marine debris – especially, derelict fishing gear – is critical for the protection of natural resources and for evaluating policies and programs designed to reduce and remove debris. This document outlines a Derelict Fishing Gear Assessment Framework to guide the development and implementation of derelict gear assessment, management and mitigation. The framework draws from techniques and protocols developed to assess derelict crab traps effects in the Chesapeake Bay and on past derelict gear assessments either conducted by or known to the framework authors. However, this framework is generalized and intended to ...
Ecological And Economic Effects Of Derelict Fishing Gear In The Chesapeake Bay 2015/2016 Final Assessment Report, 2016 Virginia Institute of Marine Science
Ecological And Economic Effects Of Derelict Fishing Gear In The Chesapeake Bay 2015/2016 Final Assessment Report, Donna Marie Bilkovic, H. Ward Slacum Jr., Kirk J. Havens, Danielle Zaveta, Christopher F.G. Jeffrey, Andrew M. Scheld, David Stanhope, Kory Angstadt, John D. Evans
Derelict fishing gear represents a major challenge to marine resource management: whether through deliberate abandonment or through accidental loss, derelict traps in particular have significant negative effects both economic (e.g., reduced fishery harvest from ghost fishing and gear competition that leads to the reduced efficiency of active gear) and ecological (e.g., degraded habitats and marine food webs and crab and bycatch mortality). Throughout the Chesapeake Bay, commercial harvest of hard-shelled blue crabs is a major fishing activity: every year sees the deployment of several hundred thousand blue crab traps (known locally as crab “pots”) across the Bay, of ...
Intensive, Regular Sampling And Removal Of Modest Numbers Of Fishes Shows No Measurable Impact On Fish Populations In Three Streams Of North Georgia, Steven L. Powers
Southeastern Fishes Council Proceedings
Recent publications and restrictions on collecting by state fish and game managers indicate a growing concern regarding the impact of field sampling on native fish populations. To evaluate the validity of these concerns, data from five life-history studies conducted in Cherokee County, Georgia were examined to test the hypothesis that regular sampling has a negative impact on fish populations. Number of individuals collected was divided by time collecting to calculate catch per unit effort (CPUE) as an indicator of relative abundance for each species. The collecting sequence (i.e. the number of times a species had previously been sampled) was ...