Download or read book Environmental and Ecological Benefits and Impacts of Oyster Aquaculture Chesapeake Bay Virginia USA written by M. Lisa Kellogg and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To better quantify the ecological benefits and impacts of oyster aquaculture, we sampled water quality, sediment quality, benthic macrofaunal communities and oysters at four oyster aquaculture sites located on the western shore of Chesapeake Bay in Virginia, USA. At each site, we collected samples from within the footprint of the aquaculture cages and from nearby areas with similar physical and environmental conditions but far enough away to be minimally influenced by aquaculture operations. Data collected from the water column included chlorophyll concentrations, turbidity, pH, dissolved oxygen concentrations, light attenuation, particle concentration, median particle size, total suspended solids and their organic content, and dissolved nutrient concentrations. Sediment and macrofauna community data collected included sediment grain size and organic content and macrofauna identity, abundance, biomass and species richness. In addition to assessing the potential impacts of oyster aquaculture on the water column and benthos, we also assessed differences in the oysters harvested Environmental and ecological benefits and impacts of oyster aquaculture at each site and estimated the total amount of nitrogen and phosphorus harvested at each site. Differences in water quality, sediment quality, and macrofauna community structure between areas within and outside the farm footprint were rare and of small magnitude and varying direction (i.e. negative versus positive impact) when they did occur. Aquaculture sites varied by an order of magnitude in size, annual harvest and harvest per unit area. They also varied by an order of magnitude in the total amount of nitrogen (N) and phosphorus (P) harvested per unit area. In contrast to the negative environmental impacts associated with other forms of animal protein production for human consumption, oyster harvest from aquaculture sites studied here resulted in the removal of 21-372 lbs. of N and 3-49lbs of P per farm per year.
Download or read book Environmental and Ecological Benefits and Impacts of Oyster Aquaculture written by M. Lisa Kellogg and published by . This book was released on 2018 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The data described in this addendum are provided to enhance the resolution and/or expand the temporal scope of the information already provided in the final report (Kellogg et al. 2018). High-resolution water quality transect data were collected at all four sites in Summer 2017, at White Stone (Windmill Point site) and Lynnhaven River in Fall 2017, and at White Stone (North Point site) in Spring 2018. During each sampling period, data were collected from multiple transects through and outside of each farm. Resulting data were detrended as needed based on temporal and salinity-related patterns found in data collected outside the farm footprint. Comparison of the resulting data from inside and outside the farm identified significant differences between water quality inside the farm footprint and outside for the majority of site x season combinations for all parameters. However, differences were consistently small enough to have no biologically significant impact, positive or negative, on farm-scale water quality. Benthic macrofaunal communities inside and outside the farms were assessed at White Stone’s Windmill Point site and at the Lynnhaven River site in Fall 2017 and White Stone’s North Point site in Spring 2018. Data on species richness, macrofauna abundance, and macrofauna biomass were compared between samples taken inside the farm footprint and outside the farm footprint for all site x season combinations. These data were compared to data previously reported from Summer 2017 collected at all four aquaculture sites. Overall, patterns in species richness and macrofauna abundance were not consistent across seasons within site, across sites within seasons or within gear type. With the exception of one of the farm sites studied, there was a trend towards increased macrofauna biomass inside the footprint of aquaculture farms. This pattern is consistent with the assumption that food for benthic macrofauna at these sites is enhanced by oyster biodeposition. Overall, we found no biologically significant negative impacts on macrofaunal communities inside aquaculture farms and some evidence that suggests a possible positive impact on benthic macrofauna production.
Download or read book Environmental Impacts of Aquaculture written by Kenneth D. Black and published by Taylor & Francis US. This book was released on 2001 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continued expansion of aquaculture – in a wide range of environments and of a growing number of species has lead to increasing demands on aquatic resources. These demands vary with the culture species, the culture method and the environmental and ecological setting. While there are many examples of efforts to mitigate detrimental environmental effects, the environment remains the ultimate constraint on the future sustainable development of this maturing industry. The relationships between the activities of aquaculture and the environment are therefore of economic importance as well as of scientific interest and, for these reasons, a large international research community has developed over the past decade. In this volume, the resultant research is synthesised and critically reviewed, providing a source of reference to the most important recent developments at research and professional level. The authors are internationally recognised authorities who have made significant contributions to their respective research areas. The first part of the volume is organised in terms of the major culture types. This is followed by chapters of general relevance to aquaculture. The volume is designed to complement Biology of Farmed Fish (eds K D Black/A D Pickering), also published in this series. It is directed at fish biologists, shellfish biologists and environmental scientists working in the academic, governmental and industrial sectors.
Download or read book Nonnative Oysters in the Chesapeake Bay written by National Research Council and published by National Academies Press. This book was released on 2004-03-09 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonnative Oysters in the Chesapeake Bay discusses the proposed plan to offset the dramatic decline in the bay's native oysters by introducing disease-resistant reproductive Suminoe oysters from Asia. It suggests this move should be delayed until more is known about the environmental risks, even though carefully regulated cultivation of sterile Asian oysters in contained areas could help the local industry and researchers. It is also noted that even though these oysters eat the excess algae caused by pollution, it could take decades before there are enough of them to improve water quality.
Download or read book Shellfish Aquaculture and the Environment written by Sandra E. Shumway and published by John Wiley & Sons. This book was released on 2011-11-15 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shellfish Aquaculture and the Environment focuses primarily on the issues surrounding environmental sustainability of shellfish aquaculture. The chapters in this book provide readers with the most current data available on topics such as resource enhancement and habitat restoration. Shellfish Aquaculture and the Environment is also an invaluable resource for those looking to develop and implement environmental best management practices. Edited one of the world's leading shellfish researchers and with contributions from around the world, Shellfish Aquaculture and the Environment is the definitive source of information for this increasingly important topic. View the Executive Summary here: http://seagrant.uconn.edu/publications/aquaculture/execsumm.pdf
Download or read book Environmental Impacts of Oyster Aquaculture on the Coastal Lagoons of Southern Rhode Island written by Chelsea Elizabeth Duball and published by . This book was released on 2017 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oysters written by Jian G. Qin and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oysters have a competitive advantage and dominate other molluscan species with respect to global distribution and aquaculture production. At present, the Pacific oyster has become one of the most important edible oysters in world aquaculture. Recently, with research advancements in oyster farming technology, non-native species invasion, environmental monitoring and disease control, new findings and outcomes have emerged. This book presents the latest research development in oyster reproduction, physiological response to pollution, ecological distribution and management, mass mortality, disease control, and other technical advance in oyster research. (Imprint: Nova)
Download or read book Aquaculture written by J. C. Davenport and published by Wiley-Blackwell. This book was released on 2003-05-06 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquaculture: the ecological issues is written by an international team of researchers. Their aim has been to give an accessible account of the scale and diversity of aquaculture and the impact that it has on habitats and ecosystems throughout the world. It deals with the culture of carp and oysters, catfish and crayfish, salmon and tiger prawns. Written by an international team of researchers. Provides an accessible account of the scale and diversity of aquaculture and the impact that it has on habitats and ecosystems throughout the world Controversial topics such as habitat loss, the introduction of alien species, genetic pollution by escapees from fish farms and spread of disease from farmed to world populations are covered Focuses on how effects of these problems have been ameliorated and looks to a future where improved technology, better regulation and integrated resource management can combine to make the industry more sustainable
Download or read book Oysters written by Judith P. Turner and published by Novinka Books. This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oyster reefs provide valuable habitat for many ecologically and economically important species, as well as stabilising benthic and intertidal habitats. Their bioactivity and structure creation leads to a greater abundance and diversity of other aquatic species. This book focuses on the eastern oyster's aquaculture and diversity of associated species; the cadmium conundrum in British Columbian oysters; the problems and risks related to an exotic oyster introduction case; and the expansion of distribution among spionid polychaetes by accompanying oyster shells during transportation.
Download or read book The Eastern Oyster written by Victor S. Kennedy and published by University of Maryland Sea Grant Publications. This book was released on 1996 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1966 Congress passed the National Sea Grant College Program Act to promote marine research, education, and extension services in institutions along the nation's ocean and Great Lakes coasts. In Maryland a Sea Grant Program -- a partnership among federal and state governments, universities, and industries -- began in 1977, and in 1982 the University of Maryland was named the nation's seventeenth Sea Grant College. The Maryland Sea Grant College focuses its efforts on the Chesapeake Bay, with emphasis on the marine concerns of fisheries, seafood technology, and environmental quality. The first comprehensive review of the biology of the eastern oyster in more than thirty years. The twenty-one chapters synthesize every aspect of oyster biology -- for instance, general anatomy, physiology, the circulatory system, reproduction, genetics, diseases -- and issues related to management and aquaculture.
Download or read book Oysters written by Jian G. Qin and published by Nova Science Publishers. This book was released on 2012-04 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oysters have a competitive advantage and dominate other molluscan species with respect to global distribution and aquaculture production. At present, the Pacific oyster has become one of the most important edible oysters in world aquaculture. Recently, with research advancements in oyster farming technology, non-native species invasion, environmental monitoring and disease control, new findings and outcomes have emerged. This book presents the latest research development in oyster reproduction, physiological response to pollution, ecological distribution and management, mass mortality, disease control, and other technical advance in oyster research.
Download or read book Chesapeake Oysters written by Katherine J. Livie and published by Arcadia Publishing. This book was released on 2015-10-26 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This cultural and ecological history explores the rise of Chesapeake’s mighty mollusk from Colonial-era harvesting to contemporary cultivation. Oysters are an essential part of Chesapeake Bay culture and cuisine, as well as the ecological and historical lifeblood of the region. When colonists first sailed these abundant shores, they described massive shoals of foot-long oysters. In later years, however, the bottomless appetite of the Gilded Age and great fleets of skipjacks took their toll. Disease, environmental pressures, and overconsumption decimated the population by the end of the twentieth century. To combat the problem, Virginia began leasing its waters to private oyster farmers. Today, these boutique oyster farms are sustainably meeting the culinary demand of a new generation of connoisseurs. But in Maryland, passionate debate continues among scientists and oystermen whether aquaculture or wild harvesting is the better path. With careful research and interviews with experts, author Kate Livie presents this dynamic story and a glimpse of what the future may hold.
Download or read book Oysters and Clams written by Jesús L. Romalde and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oyster Farming written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Watchdogs A Political Environmental and Socioeconomic Analysis of Oyster Farming in Alabama written by Catharine Weber and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once a common feature in Mobile Bay, oyster reefs and oyster harvest have seen a sharp decline. Overharvest, hurricanes, drought, dredging, and pollution have brought oyster populations in Mobile Bay and other oyster fisheries around the US to near collapse. Alabama responded to a poor 2008 harvest by creating stricter harvest policies and closed seasons, along with dive checks on reefs. The rules were meant to relieve the public reefs, but with degrading water quality and slumping species health oyster reefs were moved closer to the mouth of Mobile Bay in 2010. Evaluation of different strategic methods from six other states is done to compare superior and poor strategies for increasing environmental and social benefit. Use of private property rights, aquaculture, and simplifying permit processes were identified. Aquaculture in particular is examined. Oyster farming is not common in the Gulf of Mexico. Cost-benefit analysis of potential oyster aquaculture is done. No clear-cut permit exists for establishing an oyster farm in Alabama. Suggestions are put forth to aid politicians and industry in potential aquaculture permits.
Download or read book Life Cycle Assessment LCA of Oyster Farming in Washington State written by Teressa Pucylowski and published by . This book was released on 2017 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oysters are a culturally and economically valuable source of food and often promoted as an environmentally sustainable food choice. Life-cycle assessment (LCA) provides a standardized means of assessing the environmental costs of a product but has not previously been applied to oyster production. This thesis develops and applies an LCA for a production system in the Pacific North West (PNW), where oyster farming represents a major part of aquaculture production. Contemporary PNW oyster production typically consists of a hatchery, Floating Upweller System (FLUPSY), grow-out, and processing subsystems. LCA was used to quantify a suite of global scale resource depletion and environmental impacts of single-seed oyster aquaculture (individually grown instead of cultched), from cradle to retail-gate, using five different impacts categories: global warming potential (GWP), ozone depletion potential (ODP), marine eutrophication potential (MEP), human toxicity potential (HTP), and cumulative energy demand (CED). Two varieties of Pacific oysters (Crassostrea gigas) were analyzed using a functional unit (FU) of one dozen live oysters on the half shell: beach-grown oysters (trade name Classic Pacifics) and tide-tumbled oysters (trade name Shigokus). Results show electricity and fuel as the dominant contributors to impacts, with infrastructure, water use, and chemicals as minimal contributors. The contribution of each subsystem to total resource demand varied with each impact category. Production of Shigokus had slightly higher impacts overall, due to higher material use during the grow-out phase compared to Classic Pacifics, even though they have a higher survival rate. As a non-intensive and non-fed system, oyster aquaculture overall had low values per each impact category, confirming claims that they are a low environmental impact food choice.
Download or read book Review and Synthesis of the Environmental Impacts of Aquaculture written by and published by . This book was released on 2002 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
