Pullin roger r s v (2 risultati)

Trade Paperback. Condizione: Good. First Edition. 419 Pages Indexed with List of Participants. Laid in is a brochure titled ICALARM Publications. Previous owner's name on front cover front endpaper. Interior text and illustration pages are bright, tight, and white. The application of biological principles to aquaculture in the disciplines of nutrition, physiology, reproduction and pathology has allowed for rapid expansion and intensification of production from aquacultural systems. A great deal of this research has been done in the temperate zone and has been focused on carnivorous freshwater and marine fish species. Little effort has been devoted to the controlled use of nutrients from decomposing organic matter, particularly in tropical systems. Some extremely successful culture systems are based in large part on microbial-detrital production, notably pond fertilization with livestock manure. The potential for utilizing such detrital systems to reduce or eliminate the need for costly supplementary feed in pond aquaculture is excellent. Full development of this potential is dependent upon more complete knowledge of the systems and assessment of methods for their manipulation. The term 'detritus', as used here, is defined as nonliving organic matter, usually in a particulate form, but also including dissolved organic matter. Inorganic matter and various biota (bacteria, fungi, Protozoa, meiofauna and larger invertebrates) may occur in association with detritus, but they are not detritus per se.…

paperback. Condizione: Good. Our good condition books are generally good for reading but not for gifting or collecting. They could have imperfections such as creasing, fanning, inscriptions, margin notes, yellowing, staining on edge or cover or pages, bumps, scuffs, etc etc (sometimes multiple of these). It's a wide category that encompasses anything that isn't almost-new down to anything that is slightly better than poor. We would NOT recommend gifting Good books - these should be considered reading copies. Our books are dispatched from a Yorkshire former cotton mill. We list via barcode/ISBN so please note that the images are stock images and may not be the exact copy you receive, furthermore the details about edition and year might not be accurate as many publishers reuse the same ISBN for multiple editions and as we simply scan a barcode or enter an ISBN we do not check the validity of the edition data when listing. If you're looking for an exact edition please don't order (at least not without checking with us first, although we don't always have time to check). We aim to dispatch prompty, the service used will depend on order value and book size. We can ship to most countries, see our shipping policies. Payment is via Abe only.…