Water Use and Re-use in Aquaculture

by Verdegem, Marc

• ISBN13: 9781405162845
• ISBN10: 1405162848
• Format: Hardcover
• Copyright: 2012-06-22
• Publisher: John Wiley & Sons Inc

Summary

Water Use and Re-use in Aquaculture provides a comprehensive review of present and likely future water use in aquaculture, as well as providing details of water related constraints for further sustainable development.

Table of Contents

1 Review of water use worldwide.Short chapter (10-12 pages) setting a broad framework of global water resources and global water use. The chapter should contain a few world maps with information on:.+ Fresh water availability (5-6 categories, showing which countries have too much, enough, too little fresh water).+ Water use for agriculture (in percentages of total water availability).+ Balance between rain fed and irrigated areas.Trends in future water availability will also be outlined:.+ Shifts from agriculture to industry and urbanization.+ Demographic developments and impact on water availability.Authors: International wetland bureau, Water Group Wageningen UR.2 Global water use in aquaculture.A review of water use in aquaculture by country. Attention is given to the amount of aquatic products produced and the related water use. Such a comparison will allow to make a by country comparison for aquaculture water use efficiency (for instance MT produced/m3 water).Authors: Stirling University.3 Water use in the aquaculture production chain.Water uses in aquaculture include on-farm water use (evaporation + seepage + drainage), water treatment/purification systems, fish processing, and fish food production (food ingredient production, processing). Additional water use is related to the construction of facilities, energy use, etc. The goal of this chapter is to review and to define the water use along the whole aquaculture value chain, and to define which types of water use will be considered in the rest of the study.Authors: Verdegem/Varadi.4 Future growth in aquaculture production and related water needs.FAO has published various scenario's for future development of aquaculture. The goal of this chapter is to related future growth in aquaculture developments to future demands for water use, and where possible to outline water scarcity limits for future aquaculture development, given present technologies stay the same.Authors: FAO/Barg.5 Approaches to reduce water use in aquaculture.5.1 Intensification of pond aquaculture.Recent insights in pond production techniques allow to increase production per unit surface area, without negative impacts on sustainability and water use. Intensification leads to reduction in water use per amount produced. This chapters reviews recent developments in pond aquaculture and analyses the impact on water use in aquaculture. Techniques to reduce seepage losses will also be discussed.Authors: Avnimelech/ Verdegem.5.2 Recirculation technology.5.2.1 Outdoor semi-closed and closed systems.This chapter reviews developments in semi- and closed production technology of outdoor systems in relation to water use. Besides the use of artificial wetlands, stabilization ponds and activated sludge, partitioned aquaculture systems are also reviewed.Authors: Pekar/Brune/Stirling team.5.2.2 Indoor recirculation systems.This includes a review of greenhouse production systems and