Download or read book Response of Migrating Adult Salmonids to Vertical and Horizontal Rectangular Orifices at Two Depths written by Clark S. Thompson and published by . This book was released on 1967 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fish Passes written by Gerd Marmulla and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2002-01-01 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many fish species, like salmon and sturgeon, undertake extended migrations as part of their basic behavior, and other fish and invertebrates also undertake short-term or small-scale migrations at certain phases of their life cycles. Activities such as dam construction for water supply and power generation, channelization for navigation and flood control, land drainage and wetland reclamation for agricultural and urban use all have profound impact on the aquatic ecosystem and thus on natural fish populations. Fish passes are often the only way to make it possible for aquatic fauna to pass obstacles that block their up-river journey. Based on knowledge and experience from mainly Europe and North America, this book describes the various types of fish passes, with special emphasis to "close-to-nature" solutions.
Download or read book Temperature Biology of Animals written by Andrew Cossins and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Temperature is one facet in the mosaic of physical and biotic factors that describes the niche of an animal. Ofthe physical factors it is ecologically the most important. for it is a factor that is all-pervasive and one that. in most environments. lacks spatial or temporal constancy. Evolution has produced a wide variety of adaptive strategies and tactics to exploit or deal with this variable environmental factor. The ease with which temperature can be measured. and controlled experimentally. together with its widespread influence on the affairs of animals. has understandably led to a large. dispersed literature. In spite of this no recent book provides a comprehensive treatment of the biology of animals in relation to temperature. Our intention in writing this book was to fill that gap. We hope we have provided a modern statement with a critical synthesis of this diverse field. which will be suitable and stimulating for both advanced undergraduate and post graduate students of biology. This book is emphatically not intended as a monographical review. as thermal biology is such a diverse. developed discipline that it could not be encompassed within the confines of a book of this size.
Download or read book Secrets of Earth and Sea written by Sir Edwin Ray Lankester and published by . This book was released on 1921 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Salamanders of the Old World written by Max Sparreboom and published by BRILL. This book was released on 2014-09-08 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salamanders of the Old World is a new in-depth reference work covering all the salamander species of Europe, Asia, and North Africa. A marvellous addition for the herp community that comes recommended for researchers, managers, conservationists, students, and salamander enthusiasts. Salamanders of the Old World • features information on biology and life history of salamanders • includes over 150 species of Europe, Asia, and North Africa • richly illustrated • focuses on habitat, behaviour, and reproduction • information on identification, eggs and larvae, and threats and species conservation • distribution maps for all species • an extensive reference list. Published in cooperation between KNNV Publishing and Naturalis Biodiversity Centre (The Netherlands).
Download or read book Developmental Biology of Teleost Fishes written by Yvette Kunz-Ramsay and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the compiling of this book, the vast literature dealing with the descriptive morphology, histology and cytology of teleost development has been combed and integrated. The book is divided into 21 chapters, starting with the egg and embryonic development up to hatching. This is followed by a description of ectodermal, mesodermal and entodermal derivatives and the development of various organs. The subject index, species index and the abundant illustrations add extra value to this long awaited book. Developmental Biology of Teleost Fishes will be a valuable tool for scientists and students in the fields of biology, developmental biology, molecular biology and fish biology.
Download or read book Handbook on European Fish Farming written by Ergün Demir and published by Tudás Alapítvány. This book was released on 2020-01-16 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquaculture is one of the fastest way to produce animal protein for growing population in the World. Aquaculture is the art, science, and business of producing aquatic plants and animals useful to humans. Fish farming is an ancient practice and date back as far as 2500 BC. In Europe, fish raised in ponds became a common source of food during the Middle Ages. Today, aquaculture plays a major role in global fish supply. Today, the global community faces financial and economic crisis, climatic changes and the pressing food and nutrition needs of a growing population with finite natural resources. As the world’s population continues to increase over the coming decades, and global living standards rise, demand for fish is set to keep on growing. With most wild capture fisheries already fully exploited, much of that new demand will have to be met from aquaculture. According to FAO estimates, more than 50 % of all fish for human consumption now comes from aquaculture. Aquaculture is one of the most resource-efficient ways to produce protein. Fish come out well because, in general, they convert more of the feed they eat into body mass than livestock animals. Salmon is the most feed-intensive farmed fish to convert feed to body weigt gain and protein followed by chicken. Aquaculture is the controlled cultivation and harvest of aquatic organisms. Most commonly grown are finfish and shellfish, but other aquatic organisms are also cultivated such as seaweed, microalgae, frogs, turtles, alligators, and endangered species. There are many similarities between aquaculture and agriculture, but there are some important differences as well. Aquaculture, like agriculture, is necessary to meet the food demands of a growing global population with diminishing natural fisheries stocks. Aquaculture and agriculture are both farming. However, aquaculture is farming in the water and therefore requires a different set of knowledge, skill, and technology.
Download or read book Standard Map Symbols written by United States. Soil Conservation Service and published by . This book was released on 1966 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Essential Rendering written by David L. Meeker and published by . This book was released on 2006-01-01 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Yeast technology written by Gerald Reed and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yeasts are the active agents responsible for three of our most important foods - bread, wine, and beer - and for the almost universally used mind/ personality-altering drug, ethanol. Anthropologists have suggested that it was the production of ethanol that motivated primitive people to settle down and become farmers. The Earth is thought to be about 4. 5 billion years old. Fossil microorganisms have been found in Earth rock 3. 3 to 3. 5 billion years old. Microbes have been on Earth for that length of time carrying out their principal task of recycling organic matter as they still do today. Yeasts have most likely been on Earth for at least 2 billion years before humans arrived, and they playa key role in the conversion of sugars to alcohol and carbon dioxide. Early humans had no concept of either microorganisms or fermentation, yet the earliest historical records indicate that by 6000 B. C. they knew how to make bread, beer, and wine. Earliest humans were foragers who col lected and ate leaves, tubers, fruits, berries, nuts, and cereal seeds most of the day much as apes do today in the wild. Crushed fruits readily undergo natural fermentation by indigenous yeasts, and moist seeds germinate and develop amylases that produce fermentable sugars. Honey, the first con centrated sweet known to humans, also spontaneously ferments to alcohol if it is by chance diluted with rainwater. Thus, yeasts and other microbes have had a long history of 2 to 3.
Download or read book EPA 430 9 written by and published by . This book was released on 1973 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydroecology and Ecohydrology written by Paul J. Wood and published by John Wiley & Sons. This book was released on 2008-02-28 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This state-of-the-art, research level text considers the growing volume of research at the interface of hydrology and ecology and focuses on: the evolution of hydroecology / ecohydrology process understanding hydroecological interactions, dynamics and linkages methodological approaches detailed case studies future research needs The editors and contributors are internationally recognised experts in hydrology and ecology from institutions across North America, South America, Australia, and Europe. Chapters provide a broad geographical coverage and bridge the traditional subject divide between hydrology and ecology. The book considers a range of organisms (plants, invertebrates and fish), provides a long-term perspective on contemporary and palaeo-systems, and emphasises wider research implications with respect to environmental and water resource management. Hydroecology and Ecohydrology is an indispensable resource for academics and postgraduate researchers in departments of physical geography, earth sciences, environmental science, environmental management, civil engineering, water resource management, biology, zoology, botany and ecology. It is also of interest to professionals working within environmental consultancies, organizations and national agencies.
Download or read book The Biology and Culture of Tilapias written by Roger S. V. Pullin and published by WorldFish. This book was released on 1982 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This conference brought together 19 tilapia biologists and experimental culturists from 10 countries. It was designed from the outset as a technical conference on the basic biology of the tilapias and applications in culture systems. The conference did not consider the commercial aspects of tilapia culture.
Download or read book Algal Culturing Techniques written by Robert A. Andersen and published by Elsevier. This book was released on 2005-03-04 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Algal Culturing Techniques is a comprehensive reference on all aspects of the isolation and cultivation of marine and freshwater algae, including seaweeds. It is divided into seven parts that cover history, media preparation, isolation and purification techniques, mass culturing techniques, cell counting and growth measurement techniques, and reviews on topics and applications of algal culture techniques for environmental investigations. Algal Culturing Techniques was developed to serve as both a new textbook and key reference for phycologists and others studying aquatic systems, aquaculture and environmental sciences. Students of algal ecology, marine botany, marine phycology, and microbial ecology will enjoy the hands-on methodology for culturing a variety of algae from fresh and marine waters. Researchers in industry, such as aquaculture, pharmaceutical, foodstuffs, and biotechnology companies will find an authoritative and comprehensive reference. - Sponsored by the Phycological Society of America - Features color photographs and illustrations throughout - Describes culturing methods ranging from the test tube to outdoor ponds and coastal seaweed farms - Details isolation techniques ranging from traditional micropipette to automated flow cytometeric methods - Includes purification, growth, maintenance, and cryopreservation techniques - Highlights methods for estimating algal populations, growth rates, isolating and measuring algal pigments, and detecting and culturing algal viruses - Features a comprehensive appendix of nearly 50 algal culture medium recipes - Includes a glossary of phycological terms
Download or read book Black s Veterinary Dictionary written by Edward Boden and published by Bloomsbury Publishing. This book was released on 2015-03-26 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt: Black's Veterinary Dictionary has been a bestseller for over 80 years. It is an essential reference tool for all with a professional or leisure interest in the care of animals. Much more than a list of veterinary terms, its practical approach ensures that readers gain an insight into the signs and symptoms of common, and less common, diseases, their diagnosis and treatment. For the 22nd edition much new and updated information has been included, reflecting the numerous developments that have taken place in animal care and husbandry, and welfare. There is greatly expanded coverage of topics relating to popular breeds of dog and cat, and the inheritable conditions that might affect their health. Advances in medicine, surgery and diagnostic techniques; descriptions of newly identified diseases such as Schmallenberg virus; the resurgence of old scourges such as TB in cattle, and ongoing enzootic infections such as bird flu are included in this new edition. The growing risk of exotic diseases such as heartworm being imported following the relaxation of travel arrangements for dogs and cats is reflected in new entries. Notes on many new species being farmed or kept as companion animals are among the thousands of topics covered. Whether your interest is in cats or cattle, horses or hamsters, puppies or pigeons, the A-Z of veterinary matters is covered in Black's Veterinary Dictionary.
Download or read book Ancient Nets and Fishing Gear written by Tønnes Bekker-Nielsen and published by . This book was released on 2010 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fishing technology of the Classical world has so far received little systematic attention, neither from historians nor from archaeologists. In this volume, the reader will find a series of studies offering a wide range of approaches to the topic of ancient fishing technology, based on detailed studies of the available literary, archaeological, pictorial and icthyological evidence as well as on diachronic comparisons with fishing techniques of the Early Medieval and Modern periods. The articles included in the present volume are based on the authors' presentations at an international, interdisciplinary workshop in Cadiz, covering the history of fishing from Pre-history to the present day, with a special emphasis on the Roman period.
Download or read book Guidelines for Water Reuse written by and published by . This book was released on 2004 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
