Fiskeri og relaterede industrier

This book on 'Physiology of Finfish and Shellfish' has been written after author's 25 years of lectures on this subject both at UG, PG and Ph. D. level. Although a good number of textbooks are available on fish physiology, very few books on physiology of both finfish and shellfish have been found, which can be considered suitable for use in UG a...

Aquaponic food production systems integrate two production systems, namely, aquaculture and hydroponics in a single production system. Aquaculture is related to growing fish in a closed environment whereas hydroponics involves growing plants in a soil-less environment. Aquaponic systems offer an alternate technology solution for some of the major problems in the world such as population growth, urbanization, water shortages, land and soil degradation, environmental pollution, world hunger, and climate change. There are three major components of the aquaponics freshwater systems which include freshwater aquatic animals (such as fish), nitrifying bacteria, and plants. All these three living entities are dependent on each other for their survival. Bacteria consume the fish waste and generate nutrients which are used by the plants. As plants grow, nutrients are removed from the water, making it clean for the fish. Aquaponic food production systems are an intensive yet sustainable food production system. Moreover, aquaponics do not require soil and are therefore not susceptible to soil-borne diseases. This book outlines the principles of aquaponics food production systems in detail. It will provide comprehensive knowledge to the readers.

Aquaponic food production systems integrate two production systems, namely, aquaculture and hydroponics in a single production system. Aquaculture is related to growing fish in a closed environment whereas hydroponics involves growing plants in a soil-less environment. Aquaponic systems offer an alternate technology solution for some of the major problems in the world such as population growth, urbanization, water shortages, land and soil degradation, environmental pollution, world hunger, and climate change. There are three major components of the aquaponics freshwater systems which include freshwater aquatic animals (such as fish), nitrifying bacteria, and plants. All these three living entities are dependent on each other for their survival. Bacteria consume the fish waste and generate nutrients which are used by the plants. As plants grow, nutrients are removed from the water, making it clean for the fish. Aquaponic food production systems are an intensive yet sustainable food production system. Moreover, aquaponics do not require soil and are therefore not susceptible to soil-borne diseases. This book outlines the principles of aquaponics food production systems in detail. It will provide comprehensive knowledge to the readers.

A comprehensive survey of the salmon fisheries of the St. Lawrence River and its tributaries, this book offers a wealth of information about the science, technology, and economics of the salmon fishing industry in 19th century Canada. Drawing on firsthand experience and scientific research, Richard Nettle presents a detailed and fascinating account of the challenges and rewards of this important national resource.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.