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“robert g wetzel”

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  • Limnology

    Lake and River Ecosystems

    de Robert G. Wetzel ...
    Limnology is the study of the structural and functional interrelationships of organisms of inland waters as they are affected by their dynamic physical, chemical, and biotic environments. Limnology: Lake and River Ecosystems, Third Edition, is a new edition of this established classic text. The coverage remains rigorous and uncompromising and has been thoroughly reviewed and updated with evolving ... Leer más

    $75.99 USD

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  • The Australian Yabby Farmer

    de John Mosig ...
    This edition includes a chapter on water quality plus the latest findings in yabby farming. It provides a grounding in the basic principles of aquaculture and reflects the considerable advances in aquaculture technology over the last few years. Here is the basic information on the yabby, its habitat, its health and nutrition requirements. The book covers pond management, production systems, ... Leer más

    $30.99 USD

  • The Pearl Oyster

    Edición de Paul Southgate, John Lucas ...
    Contrary to a generally held view that pearls are found by chance in oysters, almost all are now produced from farms. This book is a comprehensive treatment of all aspects of the biology of pearl oysters, their anatomy, reproduction, genetics, diseases, etc. It considers how they are farmed from spawning and culturing larvae in hatcheries to adults in the ocean; how various environmental factors, ... Leer más

    $105.99 USD

  • Coral Reef Animals for Kids: Habitat Facts, Photos and Fun | Children's Oceanography Books Edition

    de Baby Professor ...
    The coral reefs are very important environmental structures but they need your love and care. The purpose of this workbook is to introduce the wonderful benefits of coral reefs, with the hope that such knowledge will spur action later on. The use of pictures and select texts make this workbook perfect for kids. Buy a copy today! ... Leer más

    $4.99 USD

  • Biology of the Lobster

    Homarus Americanus

    Edición de Jan Robert Factor ...
    The widely distributed American Lobster, Homarus americanus, which inhabits coastal waters from Canada to the Carolinas, is an important keystone species. A valuable source of income, its abundance or rarity often reflects the health of ecosystems occupied by these crustaceans. This comprehensive reference brings together all that is known of these fascinating animals. It will appeal to biologists ... Leer más

    $422.99 USD

  • Swim Away! Swim Away! The Great White Shark Is After Me! Animal Book 4-6 | Children's Animal Books

    de Baby Professor ...
    Sharks are portrayed as scary sea creatures that eat fish and attack humans, too. But are all sharks like that? Is it in their nature to hurt other creatures? Maybe we misunderstand them and the key to correcting how we see them lies in the pages of this wonderful animal book for kids age 4-6. Secure a copy today! ... Leer más

    $3.99 USD

  • Conservation of Fish and Shellfish Resources

    Managing Diversity

    Edición de J. E. Thorpe, Graham A.E. Gall, Jim E. Lannan, Colin E. Nash ...
    Fish and shellfish comprise annually nearly 70-million tons of the world's edible animal protein. However, because of this demand, previously vast stocks have often been exhausted to the point of near extinction. The first book of its kind in the area of freshwater/marine biodiversity, this extensive work reviews the present status of genetic resource management, its needs and constraints, various ... Leer más

    $65.99 USD

  • Interrelationships of Fishes

    Edición de Melanie L.J. Stiassny, Lynne R. Parenti, G. David Johnson ...
    Comprising by far the largest and most diverse group of vertebrates, fishes occupy a broad swathe of habitats ranging from the deepest ocean abyss to the highest mountain lakes. Such incredible ecological diversity and the resultant variety in lifestyle, anatomy, physiology and behavior, make unraveling the evolutionary history of fishes a daunting task. The successor of a classic volume by the ... Leer más

    $170.99 USD

  • Analysis of Oceanic Waters and Sediments

    de Thomas Roy Crompton ...
    The presence of concentrations of organic substances and cations in seawater is a matter of increasing concern to the water industry, environmentalists and the general public alike. It poses a threat of possible health hazards for humans, fish and crustacea. Until fairly recently, the analysis of seawater was limited to a number of major constituen ... Leer más

    $70.99 USD

  • Molecular Systematics of Fishes

    Edición de Thomas D. Kocher, Carol A. Stepien ...
    Sequenced biological macromolecules have revitalized systematic studies of evolutionary history. Molecular Systematics of Fishes is the first authoritative overview of the theory and application of these sequencing data to fishes. This volume explores the phylogeny of fishes at multiple taxonomic levels, uses methods of analysis of molecular data that apply both within and between fish populations ... Leer más

    $109.99 USD

  • Principles of Salmonid Culture

    Edición de W. Pennell, B.A. Barton ...
    Series Libro 29 - Developments in Aquaculture and Fisheries Science
    As salmonids have been reared for more than a century in many countries, one might expect that principles are well established and provide a solid foundation for salmonid aquaculture. Indeed, some of the methods used today in salmonid rearing are nearly identical to those employed one hundred years ago. Areas of salmonid research today include nutrition, smolt and stress physiology, genetics and ... Leer más

    $292.99 USD

  • Learning about Fish and Mammal Species | Children's Fish & Marine Life

    de Baby Professor ...
    The underwater world is full of surprises! It is bigger than all land combined so you can pretty much expect billions of fish, mammals and other marine life in its depth. Let's get to know some of them in this beautiful interactive picture book of knowledge. Don't forget to secure a copy today! ... Leer más

    $4.99 USD