Suchergebnisse

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. Detailed chapters include coverage of *soils in pond aquaculture *physical, chemical, and mineralogical properties of soil *soil nutrients *the exchange of dissolved substances between soil and water *soil organic matter, anaerobic respiration, and oxidation-reduction *sediment soil *relationships to aquatic animal production *pond bottom management and soil analyses. Bottom Soils, Sediment, and Pond Aquaculture gives students and professionals in aquaculture insight into the principles of soil science which most affect pond management and provides them with an essential and current reference

An overview of aquaculture -- World population -- World food production -- Assessing resource use and environmental impacts -- Land use -- Water use by aquaculture systems -- Energy use and atmospheric emissions -- Protein conversion and the fish meal and oil issue -- Chemicals in aquaculture -- Water pollution -- Biodiversity -- Governmental regulations -- Best management practices -- Eco-label certification -- Some final thoughts

The only hope of supplying the world's ever-increasing demand for aquatic food products is through aquaculture, and the vast majority of this is conducted in ponds. Although pond aquaculture may appear at first to be an archaic method of growing aquatic animals, it is one that is consistently profitable when the pond is managed properly. The most important aspect of pond management is the maintenance of adequate environmental conditions for good growth and health of the animal under culture. Water quality in ponds also extends into the areas of environmental protection and food quality and safety, which are increasingly important in today's world. This book provides the most complete, up-to-date account of water quality and its management in aquaculture ponds. It provides background information on the physical, chemical, and biological environment of pond aquaculture, and illustrates how the proper balance of these factors is the essential ingredient for successful production of fish and other aquatic animals. Management techniques for the control of water quality and productivity include liming, fertilization, mechanical aeration, water exchange, and the use of algicides and herbicides. The authors examine the effects of pollution on aquaculture and the validity of current criticisms by environmentalists. This book will be of great benefit to students, extension agents, policy-makers, government officials and the commercial aquaculture industry

Useful to advanced undergraduate and graduate students in aquaculture, as well as to commercial aquaculturists, aquacultural researchers and aquaculture consultants, this book provides a thorough, but not excessively detailed, fundamental background on selected topics in hydrology and on water supply and water supply systems for pond aquaculture. More detailed than a general textbook, but less detailed than an engineering manual, this book suppplies aquaculturists with information necessary to solve problems and communicate effectively, and it will enlighten engineers about problems encountered in aquaculture projects. Topics include the properties of water, water budgets, water conservation, open-channel flows, water measurement, ground water and wells, pond design, and alternatives to pond aquaculture