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Fish Production And Sediment
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Book Synopsis Bottom Soils, Sediment, and Pond Aquaculture by : Claude E. Boyd
Download or read book Bottom Soils, Sediment, and Pond Aquaculture written by Claude E. Boyd and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquaculture pond managers measure water-quality variables and attempt to maintain them within optimal ranges for shrimp and fish, but surprisingly little attention is paid to pond soil condition. Soil-water interactions can strongly impact water quality, and soil factors should be considered in aquaculture pond management. The importance of soils in pond management will be illustrated with an example from pond fertilization and another from aeration. Pond fertilization may not produce phytoplankton blooms in acidic ponds. Total alkalinity is too low to provide adequate carbon dioxide for photosynthesis, and acidic soils adsorb phosphate added in fertilizer before phytoplankton can use it. Agricultural lime stone application can raise total alkalinity and neutralize soil acidity. The amount of limestone necessary to cause these changes in a pond depends on the base unsaturation and exchange acidity of the bottom soil. Two ponds with the same total alkalinity and soil pH may require vastly different quantities of limestone because they differ in exchange acidity. Aeration enhances dissolved oxygen concentrations in pond water and permits greater feed inputs to enhance fish or shrimp production. As feeding rates are raised, organic matter accumulates in pond soils. In ponds with very high feeding rates, aeration may supply enough dissolved oxygen in the water column for fish or shrimp, but it may be impossible to maintain aerobic conditions in the surface layers of pond soil. Toxic metabolites produced by microorganisms in anaerobic soils may enter the pond water and harm fish or shrimp.
Book Synopsis Sediment in Streams by : Thomas F. Waters
Download or read book Sediment in Streams written by Thomas F. Waters and published by . This book was released on 1995 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biology and Ecology of Shallow Coastal Waters by : Anastasios Eleftheriou
Download or read book Biology and Ecology of Shallow Coastal Waters written by Anastasios Eleftheriou and published by Olsen & Olsen. This book was released on 1995 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Effects of Marine Finfish Aquaculture by : Barry Hargrave
Download or read book Environmental Effects of Marine Finfish Aquaculture written by Barry Hargrave and published by Springer Science & Business Media. This book was released on 2005-08-24 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental risks associated with large-scale marine finfish cage aquaculture cast doubt on the sustainability of the industry. This book divides the topic into its broad parts: Eutrophication; Sedimentation and Benthic Impacts; Changes in Trophic Structure and Function; and Managing Environmental Risks, and goes further to analyze methods and models currently used to measure near and far-field environmental effects of finfish mariculture and and their implications for management.
Book Synopsis Cage and Pen Fish Farming by : Malcolm C. M. Beveridge
Download or read book Cage and Pen Fish Farming written by Malcolm C. M. Beveridge and published by Food & Agriculture Org.. This book was released on 1984 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spine title: Environmental impact of freshwater cage and pen fish farming.
Book Synopsis Marine Aquaculture and Environment by : Timo Mäkinen
Download or read book Marine Aquaculture and Environment written by Timo Mäkinen and published by Nordic Council of Ministers. This book was released on 1991 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bottom Soils, Sediment, and Pond Aquaculture by : Claude E. Boyd
Download or read book Bottom Soils, Sediment, and Pond Aquaculture written by Claude E. Boyd and published by Springer Science & Business Media. This book was released on 1995-07-31 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book elucidates the vital but often neglected relationship between bottom soil and water quality. An understanding of this important connection is essential for maintaining water quality within optimum ranges for shrimp and fish. It is the first volume to provide information on topics from soil science essential to pond aquaculture. The impact of soil-water interactions on water quality is examined, and the volume provides important methods for enhancing the soil conditions in ponds.
Book Synopsis Effects of Trawling and Dredging on Seafloor Habitat by : National Research Council
Download or read book Effects of Trawling and Dredging on Seafloor Habitat written by National Research Council and published by National Academies Press. This book was released on 2002-08-09 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concerns over the potential ecological effects of fishing have increased with the expansion of fisheries throughout the marine waters of the United States. Effects of Trawling and Dredging on Seafloor Habitat describes how assessment of fishing impacts depends on gear type, number and location of bottom tows, and the physical and biological characteristics of seafloor habitats. Many experimental studies have documented acute, gear-specific effects of trawling and dredging on various types of habitat. These studies indicate that low mobility, long-lived species are more vulnerable to towed fishing gear than short-lived species in areas where the seabed is often disturbed by natural phenomena. Trawling and dredging may also change the composition and productivity of fish communities dependent on seafloor habitats for food and refuge. The scale of these impacts depends on the level of fishing effort. This volume presents color maps of fishing effort for all regions with significant bottom trawl or dredge fisheries-the first time that such data has been assembled and analyzed for the entire nation.
Book Synopsis Aquaculture Production Systems by : James H. Tidwell
Download or read book Aquaculture Production Systems written by James H. Tidwell and published by John Wiley & Sons. This book was released on 2012-06-26 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquaculture is an increasingly diverse industry with an ever-growing number of species cultured and production systems available to professionals. A basic understanding of production systems is vital to the successful practice of aquaculture. Published with the World Aquaculture Society, Aquaculture Production Systems captures the huge diversity of production systems used in the production of shellfish and finfish in one concise volume that allows the reader to better understand how aquaculture depends upon and interacts with its environment. The systems examined range from low input methods to super-intensive systems. Divided into five sections that each focus on a distinct family of systems, Aquaculture Production Systems serves as an excellent text to those just being introduced to aquaculture as well as being a valuable reference to well-established professionals seeking information on production methods.
Book Synopsis Impacts of Sediment and Nutrients on Biota in Surface Waters of the United States by : Edward G. Farnworth
Download or read book Impacts of Sediment and Nutrients on Biota in Surface Waters of the United States written by Edward G. Farnworth and published by . This book was released on 1979 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecosystem Concepts for Sustainable Bivalve Mariculture by : National Research Council
Download or read book Ecosystem Concepts for Sustainable Bivalve Mariculture written by National Research Council and published by National Academies Press. This book was released on 2010-03-18 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: U.S. mariculture production of bivalve molluscs-those cultivated in the marine environment-has roughly doubled over the last 25 years. Although mariculture operations may expand the production of seafood without additional exploitation of wild populations, they still depend upon and affect natural ecosystems and ecosystem services. Every additional animal has an incremental effect arising from food extraction and waste excretion. Increasing domestic seafood production in the United States in an environmentally and socially responsible way will likely require the use of policy tools, such as best management practices (BMPs) and performance standards. BMPs represent one approach to protecting against undesirable consequences of mariculture. An alternative approach to voluntary or mandatory BMPs is the establishment of performance standards for mariculture. Variability in environmental conditions makes it difficult to develop BMPs that are sufficiently flexible and adaptable to protect ecosystem integrity across a broad range of locations and conditions. An alternative that measures performance in sustaining key indicators of ecosystem state and function may be more effective. Because BMPs address mariculture methods rather than monitoring actual ecosystem responses, they do not guarantee that detrimental ecosystem impacts will be controlled or that unacceptable impact will be avoided. Ecosystem Concepts for Sustainable Bivalve Mariculture finds that while performance standards can be applied for some broad ecosystem indicators, BMPs may be more appropriate for addressing parameters that change from site to site, such as the species being cultured, different culture methods, and various environmental conditions. This book takes an in-depth look at the environmental, social, and economic issues to present recommendations for sustainable bivalve mariculture.
Book Synopsis Environmental Impacts of Aquaculture by : Kenneth D. Black
Download or read book Environmental Impacts of Aquaculture written by Kenneth D. Black and published by Burns & Oates. 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, both vertebrate and invertebrate - 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 of significant economic importance, as well as of innate scientific interest. As a result, a large international research community has developed over the past decade. In Environmental Impacts of Aquaculture, the research is synthesized and critically reviewed, providing a source of reference to the most important recent developments at research and professional level.
Book Synopsis Aquaculture in the Ecosystem by : Marianne Holmer
Download or read book Aquaculture in the Ecosystem written by Marianne Holmer and published by Springer Science & Business Media. This book was released on 2007-12-29 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a scientific forecast of development in aquaculture with a focus on the environmental, technological, social and economic constraints that need to be resolved to ensure sustainable development of the industry and allow the industry to be able to feed healthy seafood products to future generations. The chapters discuss the most critical bottlenecks of the development. They encompass subjects of understanding the environmental impacts, the current state-of-the-art in monitoring programs and in coastal zone management, the important interactions between wild and cultured organisms including release of non-native species into the wild.
Book Synopsis Nucleic Acids and Proteins in Soil by : Paolo Nannipieri
Download or read book Nucleic Acids and Proteins in Soil written by Paolo Nannipieri and published by Springer Science & Business Media. This book was released on 2006-09-22 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: With millions of different bacterial species living in soil, the microbial community is extremely complex, varying at very small scales. Microbe-driven functions are essential for most processes in soil. Thus, a better understanding of this microbial diversity will be invaluable for the management of the various soil functions. Nucleic Acids and Proteins in Soil combines traditional approaches in soil microbiology and biochemistry with the latest techniques in molecular microbial ecology. Included are methods to analyse the presence and importance of nucleic acids and proteins both inside and outside microbial cells, the horizontal gene transfer which drives bacterial diversity, as well as soil proteomes. Further chapters describe techniques such as PCR, fingerprinting, the challenging use of gene arrays for structural and functional analysis, stable isotope probing to identify in situ metabolic functions, and the use of marker and reporter genes in soil microbial ecology.
Book Synopsis Effects of Suspended Solids and Sediment of Reproduction and Early Life of Warmwater Fishes by : Corvallis Environmental Research Laboratory
Download or read book Effects of Suspended Solids and Sediment of Reproduction and Early Life of Warmwater Fishes written by Corvallis Environmental Research Laboratory and published by . This book was released on 1979 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Wetland Conversion to Farming on Water Quality and Sediment and Nutrient Retention in a Tropical Catchment by : Abias Uwimana
Download or read book Effects of Wetland Conversion to Farming on Water Quality and Sediment and Nutrient Retention in a Tropical Catchment written by Abias Uwimana and published by CRC Press. This book was released on 2019-11-26 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study used a combination of landscape-scale synoptic surveys (catchment, reaches) and mesocosm surveys (experimental plots) to assess the impacts of conversion of natural valley-bottom wetlands to farming land on the water quality and retention of sediment and nutrients. The results showed that temperature, pH, electrical conductivity and dissolved oxygen concentration decreased, and total suspended solids (TSS) increased with storm water increase. Nitrogen (TN) and phosphorus (TP) accumulated in the catchment during the dry season and washed into the water courses during the early stages of the higher flows, with subsequent lower concentrations at the end of the rains due to dilution. Large proportions of the annual loads of TSS, TP and TN (93%, 60% and 67%, respectively) were transported during rainfall events that occurred in 115 days. Fishponds acted as temporal traps of TSS, TN and TP at the early stages of farming, and were a source of and TN and TP at the end of the farming period, in contrast to rice farming that generated sediments and nutrients early in the farming period and trapped them at the end of the farming season. Wetlands mostly acted as sinks but sometimes as a source of sediment and nutrients.
Book Synopsis Final Environmental Impact Statement by : United States. Forest Service. Pacific Northwest Region
Download or read book Final Environmental Impact Statement written by United States. Forest Service. Pacific Northwest Region and published by . This book was released on 1990 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
