Aquaculture and Fisheries Commons^™

The Utility Of Bioenergetics Modelling In Quantifying Predation Rates Of Marine Apex Predators: Ecological And Fisheries Implications, A. Barnett, M. Braccini, C. L. Dudgeon, N. L. Payne, K. G. Abrantes, M. Sheaves, E. P. Snelling

Fisheries Research Articles

Predators play a crucial role in the structure and function of ecosystems. However, the magnitude of this role is often unclear, particularly for large marine predators, as predation rates are difficult to measure directly. If relevant biotic and abiotic parameters can be obtained, then bioenergetics modelling offers an alternative approach to estimating predation rates, and can provide new insights into ecological processes. We integrate demographic and ecological data for a marine apex predator, the broadnose sevengill shark Notorynchus cepedianus, with energetics data from the literature, to construct a bioenergetics model to quantify predation rates on key fisheries species in …

Columbia River Basin Salmon And Steelhead Long-Term Recovery Situation Assessment, Oregon Solutions, William D. Ruckelshaus Center

National Policy Consensus Center Publications

In the fall of 2012, after consulting with a wide range of salmon recovery partners, NOAA Fisheries asked Oregon Consensus and the William D. Ruckelshaus Center (university-based, neutral, third-party institutions devoted to promoting collaborative governance and consensusbased public policy) to conduct an independent, impartial situation assessment to explore regional views about how best to approach comprehensive, long-term salmon and steelhead recovery in the Basin. The centers assembled an Assessment Team comprised of practitioners and academics from Washington, Oregon and Idaho.

The Assessment Team conducted 206 semi-structured interviews with individuals selected for their knowledge of, engagement in, and/or concern for salmon …

Strong Population Structure Deduced From Genetics, Otolith Chemistry And Parasite Abundances Explains Vulnerability To Localized Fishery Collapse In A Large Sciaenid Fish, Protonibea Diacanthus, Laura Taillebois, Diane P. Barton, David Crook, Thor Saunders, Jonathan Taylor, Mark Hearnden, Richard J. Saunders, Stephen J. Newman, Michael J. Travers, David J. Welch, Alan Greig, Christine Dudgeon, Safia Maher, Jennifer Ovenden

Fisheries Research Articles

As pressure on coastal marine resources is increasing globally, the need to quantitatively assess vulnerable fish stocks is crucial in order to avoid the ecological consequences of stock depletions. Species of Sciaenidae (croakers, drums) are important components of tropical and temperate fisheries and are especially vulnerable to exploitation. The black-spotted croaker, Protonibea diacanthus, is the only large sciaenid in coastal waters of northern Australia where it is targeted by commercial, recreational and indigenous fishers due to its food value and predictable aggregating behaviour. Localized declines in the abundance of this species have been observed, highlighting the urgent requirement by managers …

Ecosystem-Based Fisheries Management (Ebfm) Risk Assessment Of The Western Australian Abalone Managed Industry, F J. Webster, B Wise, Anthony M. Hart

WA Marine Stewardship Council report series

This report provides a comprehensive overview of the Western Australian (WA) Abalone Managed Fishery (AMF) and the outcomes from the 2015 ecological risk assessment of this fishery. The AMF targets three species of abalone greenlip (Haliotis laevigata), brownlip (H. conicopora) and Roe’s abalone (H. roei). Greenlip and brownlip abalone are primarily targeted on the south coast of WA, while Roe’s abalone is primarily targeted on the West Coast. Commercial fishing for abalone in WA has been undertaken since 1964.

Small-Scale Farming Of Sandfish (Holothuria Scabra) At Unguja Ukuu, Zanzibar, Claire Hacker

Independent Study Project (ISP) Collection

The biological and social components of sandfish farming were studied at Unguja Ukuu, Zanzibar. Measurement of temperature and depth, along with quadrat sampling of substrate and sea cucumbers, led to recommendations for future management of depth, biomass per area, disease and crabs, and substrate. Interviews revealed the role and potential benefits of sea cucumber farming for communities. Several barriers to, and complications with, the expansion of sea cucumber farming were also identified. This study provided information for improvement of this farm and hoped to spread knowledge of sandfish farming to Zanzibaris, who may benefit economically from the practice.

Management Strategy Evaluation For The Atlantic Surfclam (Spisula Solidissima) Using A Spatially Explicit, Vessel-Based Fisheries Model, Kelsey M. Kuykendall, Eric N. Powell, John M. Klink, Paula T. Moreno, Robert T. Leaf

CCPO Publications

The commercially valuable Atlantic surfclam (Spisula solidissima) is harvested along the northeastern continental shelf of the United States. Its range has contracted and shifted north, driven by warmer bottom water temperatures. Declining landings per unit of effort (LPUE) in the Mid-Atlantic Bight (MAB) is one result. Declining stock abundance and LPUE suggest that overfishing may be occurring off New Jersey. A management strategy evaluation (MSE) for the Atlantic surfclam is implemented to evaluate rotating closures to enhance Atlantic surfclam productivity and increase fishery viability in the MAB. Active agents of the MSE model are individual fishing vessels with …

Marine Stewardship Council Full Assessment Report Western Australian Abalone Managed Fishery, Anthony M. Hart, Lachlan W.S. Strain, Alexander Hesp, E. Fisher, F J. Webster, S. J. Brand-Gardner, S. Walters

WA Marine Stewardship Council report series

This report provides a comprehensive description of the Abalone Managed Fishery (AMF) in Western Australia (WA) and contains information relevant to assist with the assessment of this fishery against the Marine Stewardship Council (MSC) standard (v2.0) for sustainable fishing. Fishers in the AMF harvest three species; Roe’s abalone (Haliotis roei), Greenlip abalone (H. laevigata) and Brownlip abalone (H. conicopora), through hand collection by diving in shallow waters off the south-western and southern coasts of WA.

Fisheries Management Paper No.283 - Abalone Resource Of Western Australia Harvest Strategy 2106 - 2021, Department Of Fisheries Western Australia

Fisheries Management Papers

Harvest strategies for aquatic resources managed by the Western Australian Department of Fisheries (the Department) are formal documents prepared to support the decision-making processes required to ensure the management of these resources are consistent with the principles of Ecologically Sustainable Development (ESD). The objectives of ESD are reflected in the objects of the Fish Resources Management Act 1994 (FRMA) and Section 9 of the Aquatic Resources Management Act, which will replace the FRMA once proclaimed.

The publication of these strategies is intended to make the decision-making considerations and processes for the management of specified aquatic resources publicly transparent and provide …

Relationship Between Zooplankton And Walleye Rearing Pond Success, Danny Tuckett

Journal of Earth and Life Science

Walleye Sander vitreus are an important sport fish in Minnesota. This has led to the raising of Walleye in ponds to later be stocked into lakes. This study was done to determine the relationship between Walleye prey (zooplankton) and the success of Walleye in 11 stocked ponds in the Ortonville, MN area. There was no management of the ponds until harvest, which starts in late September and ends in November. There were significant positive relationships between rotifer density (P = 0.03) and nauplii density (P = 0.04) to kg of Walleye harvested. The setting where nauplii and rotifer density are …

An Evaluation Of Nitrogen Supplementation And Processed Soy Fractions On The Performance Of Cultured Fishes, Brandon M. White

Electronic Theses and Dissertations

World population growth has resulted in an increased demand for a sustainable food supply. This rapid growth coupled with an increased per capita consumption of seafood, has resulted in many of the world’s marine fisheries being over-exploited in an effort to meet the global demand for seafood. Aquaculture has attempted to fill the supply and demand gap created by the dwindling supply of fish in the world’s oceans. Fishmeal (FM) has traditionally been the primary protein ingredient in aquafeeds fed to farm-raised fish, however its unstable supply and increasing price have driven researchers to identify alternative protein sources. Soybean meal …

Measuring Aquatic Organism Responses To Grassland Restoration: Does The Field Of Dreams Really Exist?, David A. Schumann

Electronic Theses and Dissertations

Landscape homogenization and the degradation of riparian areas has greatly impaired stream ecosystems throughout North America. Conservation programs may repair riparian ecosystems to indirectly improve water quality and instream habitat heterogeneity in hopes to elicit biological responses. However, focused manipulations on isolated stream fragments have rarely achieved biological goals. Prairie streams with restored riparian areas were appraised (chemical, physical, and biological variables) to quantify the indirect effects of prevalent grassland conservation practices on aquatic resources. Riparian rehabilitation, via passive methods, promoted bank-stabilizing vegetation along all conservation stream reaches. Riparian vegetation and function quickly recovered from previous agricultural disturbances at conservation …

River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2017, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University, Gerry Pinto, Nisse Goldberg, Radha Pyati, Anthony Ouellette, Gretchen Bielmyer-Fraser, An-Phong Le, Brian P. Zoellner, Peter Bacopoulos

State of the River Report

No abstract provided.

Resource Assessment Report Western Rock Lobster Resource Of Western Australia, Simon De Lestang, Nick Caputi, Jason R. How

WA Marine Stewardship Council report series

The western rock lobster Panulirus cygnus (George) is taken by commercial and recreational fishers throughout its geographic range along the lower west coast of Western Australia. The main commercial fishery for P. cygnus is the West Coast Rock Lobster Managed Fishery (WCRLMF), which is Australia’s largest single-species fishery, currently worth about $400 million annually. Western rock lobster provides the basis for the economies of a number of coastal towns and also supports a recreational fishery.

Improving Spatial Prioritisation For Remote Marine Regions: Optimising Biodiversity Conservation And Sustainable Development Trade-Offs, Cordelai H. Moore, Ben T. Radford, Hugh P. Possingham, Andrew Heyward, Romola R. Stewart, Matthew E. Watts, Jim Prescott, Stephen J. Newman, Euan S. Harvey, Rebecca Fisher, Clay W. Bryce, Ryan J. Lowe, Oliver Berry, Alexis Espinosa- Gayosso, Errol Sporer, Thor Saunders

Fisheries Research Articles

Creating large conservation zones in remote areas, with less intense stakeholder overlap and limited environmental information, requires periodic review to ensure zonation mitigates primary threats and fill gaps in representation, while achieving conservation targets. Follow-up reviews can utilise improved methods and data, potentially identifying new planning options yielding a desirable balance between stakeholder interests. This research explored a marine zoning system in north-west Australia–a biodiverse area with poorly documented biota. Although remote, it is economically significant (i.e. petroleum extraction and fishing). Stakeholder engagement was used to source the best available biodiversity and socio-economic data and advanced spatial analyses produced 765 …

Slides: The Era Of River Anthropology: Social And Eco-Hydrological Science Connections And Capacity For Environmental Flows: Us Case Studies, Joseph E. Flotemersch, Lisa-Perras Gordon

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Joe Flotemersch, US Environmental Protection Agency (EPA), Office of Research and Development

21 slides

Slides: Environmental Flows In The Era Of 'River Anthropology', Rebecca Tharme

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Rebecca Tharme, Riverfutures Ltd.

18 slides

Slides: The Colorado River Basin, Larry Macdonnell

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Larry MacDonnell, Senior Fellow, Getches-Wilkinson Center, University of Colorado

17 slides

Slides: The Columbia River Basin, Barbara Cosens

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Barbara Cosens, Professor and Associate Dean of Faculty, University of Idaho College of Law, Waters of the West Interdisciplinary Program

16 slides

Slides: Environmental Flow Case Studies: Southern And Eastern Africa, Rebecca Tharme, Kelly Fouchy, Susan Graas, John Conallin, Michael Mcclain, Unesco-Ihe, Felister Mombo, Sokoine University Of Agriculture

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Rebecca Tharme, Riverfutures Ltd.

17 slides

Agenda: Coping With Water Scarcity In River Basins Worldwide: Lessons Learned From Shared Experiences, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Water scarcity is increasingly dominating headlines throughout the world. In the southwestern USA, the looming water shortages on the Colorado River system and the unprecedented drought in California are garnering the greatest attention. Similar stories of scarcity and crisis can be found across the globe, suggesting an opportunity for sharing lessons and innovations. For example, the Colorado River and Australia's Murray-Darling Basin likely can share many lessons, as both systems were over-allocated, feature multiple jurisdictions, face similar climatic risks and drought stresses, and struggle to balance human demands with environmental needs. In this conference we cast our net broadly, exploring …

Slides: Rivers And People In The Neotropics: Social And Ecological Science For Environmental Flows, Elizabeth P. Anderson

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenter: Elizabeth P. Anderson, Florida International University

38 slides

Slides: Food For Thought: Water Requirements For Social-Ecological Systems, Michael Douglas, Sue Jackson

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Presenters:

Michael Douglas, University of Western Australia, Charles Darwin University

Sue Jackson, Griffith University

35 slides

Slides: Indigenous Water Justice In The Columbia River Basin, Barbara Cosens

Indigenous Water Justice Symposium (June 6)

Presenter: Barbara Cosens, Professor and Associate Dean of Faculty, University of Idaho College of Law, Waters of the West Interdisciplinary Program

17 slides

Agenda: Indigenous Water Justice Symposium, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment

Indigenous Water Justice Symposium (June 6)

Indigenous peoples throughout the world face diverse and often formidable challenges of what might be termed “water justice.” On one hand, these challenges involve issues of distributional justice that concern Indigenous communities’ relative abilities to access and use water for self-determined purposes. On the other hand, issues of procedural justice are frequently associated with water allocation and management, encompassing fundamental matters like representation within governance entities and participation in decision-making processes. Yet another realm of water justice in which disputes are commonplace relates to the persistence of, and respect afforded to, Indigenous communities’ cultural traditions and values surrounding water—more specifically, …

Slides: Crystalised Not Frozen: Addressing Historical Exclusion Of Traditional Owners From Water, Poh-Ling Tan

Indigenous Water Justice Symposium (June 6)

Poh-Ling Tan, Griffith University

13 slides

Framework For Drafting Ecological Objectives For Water Sharing Plans - Submission Of The Nsw Aboriginal Land Council, Geoff Scott, New South Wales Aboriginal Land Council

Indigenous Water Justice Symposium (June 6)

Presenter: Phil Duncan, Gomeroi Nation, New South Wales Aboriginal Land Council

4 pages

Contains 1 footnote

Letter addressed to Nick Cook, A/Team Leader, WSP Science & Evaluation - North, NSW Office of Water, from Geoff Scott, Chief Executive Officer, New South Wales Aboriginal Land Council.

Ecosystem-Based Fisheries Management (Ebfm) Risk Assessment Of The Western Australian Silver-Lipped Pearl Oyster (Pinctada Maxima) Industry, K. L. Travaille, R. Jones, B Wise

WA Marine Stewardship Council report series

This report provides a comprehensive overview of the Western Australian silver-lipped pearling (Pinctada maxima) industry and the outcomes from the 2015 ecological risk assessment of this industry. The P. maxima pearling industry has been operating in Western Australia since the 1880s, initially harvesting pearl oysters for mother-of-pearl production.

Western Australian Silver-Lipped Pearl Oyster (Pinctada Maxima) Industry, Anthony M. Hart, K. L. Travaille, R. Jones, S. J. Brand-Gardner, F J. Webster, A. Irving, A. V. Harry

WA Marine Stewardship Council report series

This report provides a comprehensive description of the pearling (Pinctada maxima) industry in Western Australia. The pearling industry is comprised of the wild capture and cultivation of the silver-lipped pearl oyster Pinctada maxima in Western Australia’s northwest region.

Ecology Of Largemouth Bass In An Aging Reservoir: Implications For Creating A Trophy Largemouth Bass Fishery, Jason Breeggemann

Electronic Theses and Dissertations

There are an estimated 3-9 million small reservoirs and nearly 1,000 large reservoirs in the United States. Most of these reservoirs were built several decades ago and are experiencing symptoms of reservoir aging, including loss of habitat, sedimentation, and decreased fishery production. Furthermore, over the last several decades, there has been an increasing interest among anglers for high quality, trophy fisheries. However, little is known about exactly how the reservoir aging process affects the ecology and especially growth potential of Largemouth Bass, particularly under potential climate change scenarios. Grand Lake in TX is a 45ha ageing reservoir that was built …

Effects Of Hydrology On The Growth And Recruitment Of Stream Fish In The Eastern Broadleaf Province Of Minnesota, Eric J. Krumm

All Graduate Theses, Dissertations, and Other Capstone Projects

Agricultural practices and urban development have altered streamflows within the Eastern Broadleaf Province of Minnesota. Stream-flow alteration can produce significant changes in native freshwater communities. Therefore, knowledge of streamflow effects on representative freshwater populations and communities within the province are needed to maintain ecological integrity. Fish community and population dynamics often display predictable responses to flow regimes, which can make fishes model organisms for examining flow-ecology relationships.

In lotic systems, annual variation in streamflow can influence the annual growth and recruitment of fishes. Understanding the growth and recruitment of fish populations is essential for management and conservation efforts. Growth can …