Browse Results

Showing 951 through 975 of 17,802 results

Antarctic Nutrient Cycles and Food Webs

by W. R. Siegfried P. R. Condy R. M. Laws

It is a pleasure and a distinct honour for me to greet the participants, guests and ob­ servers of this Fourth International Symposium on Antarctic Biology which has adopted nutrient cycles and food webs as its central theme. On behalf of the Scientific Committee on Antarctic Research (SCAR) and other bodies of the International Council of Scientific Unions (ICSU), I bid you welcome. SCAR is pleased to acknowledge the role of the co-sponsors for this Symposium which include the Scientific Committee on Oceanic Research (SCOR), the Interna­ tional Association of Biological Oceanography (IABO), and the International Union of Biological Sciences (IUBS). In addition, SCAR and its co-sponsors wish to acknowledge the financial support of the Council for Scientific and Industrial Re­ search (CSIR) and the Department of Transport (DOT) of the South African govern­ ment. Nor should we forget to acknowledge also the role of the South African Scientific Committee on Antarctic Research (SASCAR) and one of its leaders and Vice President of SCAR, Mr. Jan de Wit, in arranging this charming venue for this Symposium.

Antarctic Ocean and Resources Variability

by Dietrich Sahrhage

During the intensification of research activities in the Southern Ocean in recent years, both at national levels and through international cooperation in such projects as BIOMASS with its FIBEX and SIBEX phases, the need was felt increasingly for closer collaboration between biologists, meteorologists, and oceanographers in the study of the interaction between the atmospheric forces, the water masses, and the living resources. Better knowledge in this regard is not only of scientific interest but also of practical importance, especially for the management of the resources and the protection of the Antarctic marine ecosystem. As a follow-up on a recommendation by the IOC Program Group for the Southern Oceans made in March 1983, the Intergovernmental Oceanographic Commission organized a meeting of experts on oceanography related to the dynamics of the Antarctic ecosystems. During this meeting, held in Kiel, Federal Republic of Ger­ many, in May 1984, biologists and oceanographers involved in BIOMASS activities met with the oceanographers of SCOR Working Group 74 to discuss ways and means for additional physical and chemical observations in the oceanographic research within BIOMASS. It was the time when large fluctuations in the distribution of krill with subsequent detrimental effects on predator species dependent on krill had just been observed, and the question arose whether this was possibly the result of changes in the Antarctic water circulation.

Antarctic Paleobiology: Its Role in the Reconstruction of Gondwana

by Thomas N. Taylor Edith L. Taylor

Antarctic Paleobiology discusses the current status of paleobiology, principally paleobotany and palynology in Antarctica, and the interrelationship of Antarctic floras to those of other Gondwana continents. It provides a broad coverage of the major groups of plants on the one hand, while on the other seeking to evaluate the vegetational history and the physical and biological parameters that influence the distribution of floras through time and space. The biologic activity is discussed within a framework of the geologic history, including the tectonic and paleogeographic history of the region. Finally, the reader will find a comprehensive bibliography of Gondwana paleobotany and palynology.

The Antarctic Silverfish: a Keystone Species in a Changing Ecosystem (Advances in Polar Ecology #3)

by Marino Vacchi Eva Pisano Laura Ghigliotti

This book encompasses the body of available scientific information on the notothenioid fish Pleuragramma antarctica commonly known as Antarctic silverfish. This plankton-feeder of the intermediate trophic level is the most abundant fish in the coastal regions of high Antarctica, and plays a pivotal ecological role as the main prey of top predators like seals, penguins, whales and Antarctic toothfish. Broad circum-polar distribution, a key role in the Antarctic shelf pelagic ecosystem, and adaptations makes understanding the species’ likely response to environmental change relevant to foresee the potential responses at the local ecosystem level. Additionally, a detailed understanding of the abundance and trophic interactions of such a dominant keystone species is a vital element of informing the development of marine spatial planning and marine protected areas in the Antarctic continental shelf region.Experts in the field provide here unique insights into the evolutionary adaptation, eco-physiology, trophic ecology, reproductive and population ecology of the Antarctic silverfish and provide new clues about its vulnerability in facing the challenges of the ongoing environmental changes.

Anthropoid Origins (Advances in Primatology)

by John G. Fleagle Richard F. Kay

This volume brings together information about recent discoveries and current theories concerning the origin and early evolution of anthropoid primates­ monkeys, apes, and humans. Although Anthropoidea is one of the most dis­ tinctive groups of living primates, and the origin of the group is a frequent topic of discussion in the anthropological and paleontological literature, the topic of anthropoid origins has rarely been the foeus of direct discussion in primate evolution. Rather, diseussion of anthropoid origins appears as a ma­ jor side issue in volumes dealing with the origin of platyrrhines (Ciochon and Chiarelli, 1980), in discussions about the phylogenetic position of Tarsius, in descriptions of early anthropoid fossils, and in descriptions and revisions of various fossil prosimians. As a result, the literature on anthropoid origins has a long history of argument by advocacy, in which scholars with different views have expounded individual theories based on a small bit of evidence at hand, often with little consideration of alternative views and other types of evidence that have been used in their support. This type of scholarship struck us as a relatively unproductive approach to a critical issue in primate evolution.

Anthropologie: Ein einführendes Lehrbuch (Springer-Lehrbuch)

by Gisela Grupe Kerrin Christiansen Inge Schröder Ursula Wittwer-Backofen

Die Anthropologie versteht sich hier als Brückenfach zwischen Natur- und Geisteswissenschaften. Sie schließt auch die nächsten Verwandten der Menschen im Tierreich, die nicht-menschlichen Primaten, mit ein. Diese Einführung vermittelt die ganze fachliche Breite im Grundstudium. Basierend auf einem Vorschlag der „Gesellschaft für Anthropologie e.V.“

Anthropologie: Einführendes Lehrbuch (Springer-Lehrbuch)

by Gisela Grupe Kerrin Christiansen Inge Schröder Ursula Wittwer-Backofen

Anthropologie, wörtlich übersetzt „die Lehre vom Menschen“, ist eine primär biologische Disziplin – mit vielfältigen kulturwissenschaftlichen Bezügen. In diesem aktuellen Lehrbuch zur Anthropologie reduzieren die Autorinnen deshalb die Biologie des Menschen nicht auf eine Zoologie des Menschen, sondern beziehen seine kulturelle Überformung mit ein. Der Band bietet eine Einführung in die wichtigsten Fragen und ist daher besonders für das Grundstudium geeignet. Für die Neuauflage wurden nahezu alle Kapitel erheblich erweitert und aktualisiert.

Anthrozoology: Human-Animal Interactions in Domesticated and Wild Animals


Anthrozoology, the study of human-animal interactions (HAIs), has experienced substantial growth during the past 20 years and it is now timely to synthesise what we know from empirical evidence about our relationships with both domesticated and wild animals. Two principal points of focus have become apparent in much of this research. One is the realisation that the strength of these attachments not only has emotional benefits for people, but confers health benefits as well, such that a whole area has opened up of using companion animals for therapeutic purposes. The other is the recognition that the interactions we have with animals have consequences for their welfare too, and thus impact on their quality of life. Consequently we now study HAIs in all scenarios in which animals come into contact with humans, whether as pets/companions, farm livestock, laboratory animals, animals in zoos, or in the wild. This topical area of study is of growing importance for animals in animal management, animal handling, animal welfare and applied ethology courses, and also for people within psychology, anthropology and human geography at both the undergraduate and postgraduate level. It will therefore be of interest to students, researchers, and animal managers across the whole spectrum of human-animal contact.

Anti-Vivisection and the Profession of Medicine in Britain: A Social History (The Palgrave Macmillan Animal Ethics Series)

by A.W.H. Bates

This book is open access under a CC BY 4.0 license.This book explores the social history of the anti-vivisection movement in Britain from its nineteenth-century beginnings until the 1960s. It discusses the ethical principles that inspired the movement and the socio-political background that explains its rise and fall. Opposition to vivisection began when medical practitioners complained it was contrary to the compassionate ethos of their profession. Christian anti-cruelty organizations took up the cause out of concern that callousness among the professional classes would have a demoralizing effect on the rest of society. As the nineteenth century drew to a close, the influence of transcendentalism, Eastern religions and the spiritual revival led new age social reformers to champion a more holistic approach to science, and dismiss reliance on vivisection as a materialistic oversimplification. In response, scientists claimed it was necessary to remain objective and unemotional in order to perform the experiments necessary for medical progress.

Antibacterial Chemotherapeutic Agents

by S.L. Dax

Over the past 50 years a wide variety of antibacterial substances have been discovered and synthesised, and their use in treating bacterial infection has been spectacularly successful. Today there are several general classes of antibacterial drugs, each having a well established set of uses, and together they form the mainstay of modern antibacterial chemotherapy. In search for new and improved agents, the pharmaceutical researcher needs to be well informed on many topics, including existing agents, their modes of action and pharmacology, and possible synthetic approaches. In this new book the author has brought together a wide range of information on the principal classes of antibacterial agents, and he covers, for each group, their history, mode of action, key structural features, synthesis and bacterial resistance. The result is a compact and concise overview of these very important classes of antibacterial agents.

Antibiofilm Strategies: Current and Future Applications to Prevent, Control and Eradicate Biofilms (Springer Series on Biofilms #11)

by Katharina Richter Kasper Nørskov Kragh

Bacteria and fungi are able to aggregate together or on surfaces in densely packed microcolonies, facilitated by extracellular polymeric substances for cell protection and stability. These biofilms have proven to be extremely hard to eradicate and remove once established. In chronic infections, this condition can result in a high degree of morbidity and mortality as regular antibiotic treatments are ineffective against biofilms. In industrial facilities, the formation of biofilms can ruin production and result in enormous financial losses. In this book, the current state of antibiofilm research is presented by experts from around the world. Novel, cutting-edge techniques and new optimized strategies based on established methods are discussed in chapters focused on biofilm prevention, treatment and control for the application in clinical, industrial and veterinary settings. Antibiofilm strategies, such as chemical and enzymatic treatments, surface modification and coatings, quorum sensing inhibition and dispersal induction, phage therapy, cold plasma treatment, hyperbaric oxygen treatment, and metal-based nanomedicine are covered, among many others. This book contributes to the UN’s Sustainable Development Goal 3: Good Health and Well-Being and is a valuable resource for healthcare professionals, microbiologists, academics and for educators to inform curricula of universities and colleges.

Antibiotics: A Multidisciplinary Approach

by G.G. Gallo G. Lancini F. Parenti

In this translation of the Italian second edition, the authors provide a comprehensive account of the current knowledge on antibiotics. They concisely describe how various scientific disciplines are involved in antibiotics research, development, and use. Their work also discusses the industrial and clinical development of new antibiotics, as well as the questions and controversies related to the function of antibiotics in nature. Antibiotics is richly illustrated with clear chemical structures, drawings, diagrams, and synoptical tables.

Antibodies: Their structure and function

by M.W. Steward

The student of biological science in his final years as an undergraduate and his first years as a graduate is expected to gain some familiarity with current research at the frontiers of his discipline. New research work is published in a perplexing diversity of publications and is inevitably con­ cerned with the minutiae of the subject. The sheer number of research journals and papers also causes confusion and difficulties of assimilation. Review articles usually presuppose a background knowledge of the field and are inevitably rather restricted in scope. There is thus a need for short but authoritative introductions to those areas of modern biological research which are either not dealt with in standard introductory textbooks or are not dealt with in sufficient detail to enable the student to go on from them to read scholarly reviews with profit. This series of books is designed to satisfy this need. The authors have been asked to produce a brief outline of their subject assuming that their readers will have read and remembered much of a standard introductory textbook of biology. This outline then sets out to provide by building on this basis, the conceptual framework within which modern research work is progressing and aims to give the reader an indication of the problems, both conceptual and practical, which must be overcome if progress is to be maintained.

The Anticipation of Converging Industries: A Concept Applied to Nutraceuticals and Functional Foods

by Clive-Steven Curran

The blurring of boundaries between hitherto distinct scientific disciplines, technologies or markets is a common and powerful phenomenon. Subjects of this convergence often change consumer behaviours, favouring products and platforms with multiple functions. The Anticipation of Converging Industries provides a detailed focus on the triggers, drivers and consequences of convergence to create a more concise definition of convergence. This detailed analysis includes a specifically developed toolbox for ‘convergence foresight’, creating a forecasting method for convergence trends. With the focus on the chemical, biotechnological and pharmaceutical industries, several indicators of convergence in the areas of Nutraceuticals/Functional Foods, Cosmeceuticals and ICT are derived from samples including over 1million patents and scientific publications. By supporting this methodical approach with real world data, The Anticipation of Converging Industries is perfect for industry practitioners looking for a competitive edge in the present and for the future. Similarly, academics will find a comprehensive theoretical concept for better understanding the underlying rationale of convergence at their disposal

Anticlastogens in Mammalian and Human Cells

by Erich Gebhart Ruben M. Arutyunyan

Anticlastogens in Mammalian and Human Cells covers research on the protection of chromosomes from the action of chemical mutagens by use of natural and synthetic antimutagens, which, because of their specific action on clastogenic damage are called anticlastogens. Based on an introductory chapter on nature and mode of formation of chromosome aberrations induced by chemical and also physical mutagens, the action of anticlastogens is discussed in detail. A definition and delineation of the term anticlastogenesis is followed by considerations on the various possibilities of classifying anticlastogens. Attention is paid to the action of anticlastogens in mammalian and human cell culture systems, in vivo data on anticlastogens are presented in great detail, as are the actions of anticlastogens on induced sister chromatid exchanges in various test systems. A mainly historical side-glance at the action of anticlastogens on chromosome damage induced by ionizing radiation is taken. The practical consequences of the findings on anticlastogenic action are extensively discussed as aspects of further research.

Antimicrobial Therapy in Veterinary Medicine

by Steeve Giguère John F. Prescott Patricia M. Dowling

The Fifth Edition of Antimicrobial Therapy in Veterinary Medicine, the most comprehensive reference available on veterinary antimicrobial drug use, has been thoroughly revised and updated to reflect the rapid advancements in the field of antimicrobial therapy. Encompassing all aspects of antimicrobial drug use in animals, the book provides detailed coverage of virtually all types of antimicrobials relevant to animal health. Now with a new chapter on antimicrobial therapy in zoo animals, Antimicrobial Therapy in Veterinary Medicine offers a wealth of invaluable information for appropriately prescribing antimicrobial therapies and shaping public policy. Divided into four sections covering general principles of antimicrobial therapy, classes of antimicrobial agents, special considerations, and antimicrobial drug use in multiple animal species, the text is enhanced by tables, diagrams, and photos. Antimicrobial Therapy in Veterinary Medicine is an essential resource for anyone concerned with the appropriate use of antimicrobial drugs, including veterinary practitioners, students, public health veterinarians, and industry and research scientists.

Antimicrobial Therapy in Veterinary Medicine

by Steeve Giguère John F. Prescott Patricia M. Dowling

The Fifth Edition of Antimicrobial Therapy in Veterinary Medicine, the most comprehensive reference available on veterinary antimicrobial drug use, has been thoroughly revised and updated to reflect the rapid advancements in the field of antimicrobial therapy. Encompassing all aspects of antimicrobial drug use in animals, the book provides detailed coverage of virtually all types of antimicrobials relevant to animal health. Now with a new chapter on antimicrobial therapy in zoo animals, Antimicrobial Therapy in Veterinary Medicine offers a wealth of invaluable information for appropriately prescribing antimicrobial therapies and shaping public policy. Divided into four sections covering general principles of antimicrobial therapy, classes of antimicrobial agents, special considerations, and antimicrobial drug use in multiple animal species, the text is enhanced by tables, diagrams, and photos. Antimicrobial Therapy in Veterinary Medicine is an essential resource for anyone concerned with the appropriate use of antimicrobial drugs, including veterinary practitioners, students, public health veterinarians, and industry and research scientists.

Antimicrobials in Livestock 1: A European Perspective

by Lucie Pokludová

This first volume in a two-volume work enhances readers’ understanding of antimicrobial resistance mechanisms in selected bacterial species that cause diseases in major food producing animals. It provides an overview of the current legislation and policies seeking to regulate the authorisation, manufacturing, distribution and use of veterinary antimicrobials in practice in a way that helps to contain the spread of antimicrobial resistance. The focus is put on Europe, without neglecting the global context. Moreover, attention is paid to various uses of antimicrobials in livestock, considering both their risks and benefits, from the distant past to the present. Growth promotion, prophylaxis, metaphylaxis, diagnostics and treatment are discussed not only with regard to food production and animal health, but also considering the One Health concept, which combines public and animal health with environmental aspects. A summary of various systems for monitoring the use of antimicrobials is provided, as well as an overview of the diseases that European veterinarians most often treat with antimicrobials. In closing, the book addresses the complexity of recent measures that are of key importance for antimicrobial stewardship, e.g. biosecurity, vaccination and other preventive tools including the newest technologies like smart farming. The complete two-volume work provides an extensive review of various aspects related to the use of antimicrobials in veterinary medicine, especially considering major food producing species, their most common infectious diseases and causative pathogens, and mainly focusing on the situation in Europe, without ignoring the global context. While Volume I discusses more general aspects of antibiotic use such as regulatory, laboratory and practical issues from different perspectives, Volume II more specifically discusses medical aspects and the use of antimicrobials in cattle, pigs, poultry and horses, as well as pharmacokinetics and pharmacodynamics, two of the most important factors determining the success of treatment. In both volumes, each chapter confronts the reader with open questions to stimulate further discussions and future research on the topics covered.

Anton and Cecil, Book 1: Cats at Sea (Anton and Cecil #1)

by Lisa Martin Valerie Martin

When Anton is stolen off the dock, the next thing he knows, he&’s at sea. Knowing little of the wide open ocean, brave Cecil boards another ship to find his brother. But what begins as a rescue mission turns into a pair of high seas adventures, with thrills and danger bubbling under every wave.

Anton and Cecil, Book 2: Cats on Track (Anton and Cecil #2)

by Lisa Martin Valerie Martin

The adventurous cats who sailed the open seas in Anton and Cecil: Cats at Sea head west by train to rescue a missing mouse friend. With few clues, the two depend on the help of prairie dogs, bison, ferrets, and a wise lynx to solve the mystery of Hieronymus&’s whereabouts.

Anton and Cecil, Book 3: Cats Aloft (Anton and Cecil #3)

by Lisa Martin Valerie Martin

In the thrilling final adventure of the critically acclaimed trilogy, cat brothers Anton and Cecil team up with a police dog to search for puppies stolen right off their leashes at the Chicago World&’s Fair.

Antpittas and Gnateaters

by Harold Greeney David Beadle

Elusive study organisms for ornithologists and highly prized additions to the birder's life-list, the antpittas (Grallariidae) and gnateaters (Conopophagidae) are among the most poorly known Neotropical bird groups. This authoritative handbook is the first book dedicated solely to these two families, combining an exhaustive review of more than two centuries of literature with original observations by the author and many knowledgeable contributors. Antpittas and Gnateaters provides a thorough guide to the identification and ecology of these birds, with detailed maps accompanying the text. A series of superb plates illustrate most of the 156 recognized taxa; supplemented by more than 250 colour photographs, the immature plumages and natural history of many species are depicted for the first time. This book is the ultimate reference on these remarkable and beautiful birds, and an indispensible addition to the libraries of researchers and birders for many years to come.

Antpittas and Gnateaters

by Harold Greeney David Beadle

Elusive study organisms for ornithologists and highly prized additions to the birder's life-list, the antpittas (Grallariidae) and gnateaters (Conopophagidae) are among the most poorly known Neotropical bird groups. This authoritative handbook is the first book dedicated solely to these two families, combining an exhaustive review of more than two centuries of literature with original observations by the author and many knowledgeable contributors. Antpittas and Gnateaters provides a thorough guide to the identification and ecology of these birds, with detailed maps accompanying the text. A series of superb plates illustrate most of the 156 recognized taxa; supplemented by more than 250 colour photographs, the immature plumages and natural history of many species are depicted for the first time. This book is the ultimate reference on these remarkable and beautiful birds, and an indispensible addition to the libraries of researchers and birders for many years to come.

Ants (Collins New Naturalist Library #59)

by M. V. Brian

Ants should provide both the amateur naturalist and the professional zoologist with a valuable source of reference, and a fascinating account of the lives of an intriguing group of insects.

Ants: A Visual Guide

by Heather Campbell Benjamin Blanchard

A richly illustrated natural history of ants, covering their diversity, ecology, anatomy, behavior, and morePlentiful and familiar, ants make up an estimated one-third of the world’s insect biomass and can be found in virtually every part of the globe, from rain forest canopies to city sidewalks. But their importance is about more than numbers: ants are fundamental species in a range of habitats and their interactions with plants, fungi, and other animals ensure the survival of many fragile and complex ecosystems. This beautifully illustrated book explores the extraordinary diversity of ants and offers insights into their elaborate social systems, investigating the key collective and competitive behaviors that operate within their varied colony structures.Featuring exceptional close-up photographs and clearly organized thematic chapters, the book covers anatomy, evolution, life cycle, ecology, and other important topics. Each chapter also features profiles of standout genera, chosen for their fascinating characteristics, including Leafcutter Ants, who build nests containing up to 7,000 chambers; Pugnacious Ants whose colonies can destroy populations of crabs within hours; and Honeypot Ants whose worker caste store food in their stomachs for other colony members to consume. Drawing on current research, Ants offers an inviting and accessible introduction to these remarkable insects.Includes more than 200 stunning color photographs, plus infographics and diagramsPresents full profiles of 42 iconic genera from across the worldFeatures clearly structured thematic chapters

Refine Search

Showing 951 through 975 of 17,802 results