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Author: Nils Fritiof Holmgren
Publisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 480
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Book Description
International journal for zoology.
Author: Nils Fritiof Holmgren
Publisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 480
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Book Description
International journal for zoology.
Author: Frank Rosell
Publisher: Oxford University Press
ISBN: 0198835043
Category : Nature
Languages : en
Pages : 465
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Book Description
Beavers are represented by two extant species, the Eurasian beaver (Castor fiber) and the North American beaver (Castor canadensis); each has played a significant role in human history and dominated wetland ecology in the northern hemisphere. Their behaviour and ecology both fascinate and perhaps even infuriate, but seemingly never fail to amaze. Both species have followed similar histories from relentless persecution to the verge of extinction (largely through hunting), followed by their subsequent recovery and active restoration which is viewed by many as a major conservation success story. Beavers have now been reintroduced throughout Europe and North America, demonstrating that their role as a keystone engineer is now widely recognised with proven abilities to increase the complexity and biodiversity of freshwater ecosystems. What animals other than humans can simultaneously act as engineers, forest workers, carpenters, masons, creators of habitats, and nature managers? Over the last 20 years, there has been a huge increase in the number of scientific papers published on these remarkable creatures, and an authoritative synthesis is now timely. This accessible text goes beyond their natural history to describe the impacts on humans, conflict mitigation, animal husbandry, management, and conservation. Beavers: Ecology, Behaviour, Conservation, and Management is an accessible reference for a broad audience of professional academics (especially carnivore and mammalian biologists), researchers and graduate students, governmental and non-governmental wildlife bodies, and amateur natural historians intrigued by these wild animals and the extraordinary processes of nature they exemplify.
Author: Battelle Memorial Institute
Publisher:
ISBN:
Category : Bibliography, National
Languages : en
Pages : 104
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Book Description
Author:
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 632
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Book Description
Author:
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 1018
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Book Description
Author: Dietland Müller-Schwarze
Publisher: Cornell University Press
ISBN: 9780801440984
Category : Nature
Languages : en
Pages : 228
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Book Description
Beavers can and do dramatically change the landscape. The beaver is a keystone species their skills as foresters and engineers create and maintain ponds and wetlands that increase biodiversity, purify water, and prevent large-scale flooding. Biologists have long studied their daily and seasonal routines, family structures, and dispersal patterns. As human development encroaches into formerly wild areas, property owners and government authorities need new, nonlethal strategies for dealing with so-called nuisance beavers. At the same time, the complex behavior of beavers intrigues visitors at parks and other wildlife viewing sites because it is relatively easy to observe.In an up-to-date, exhaustively illustrated, and comprehensive book on beaver biology and management, Dietland Muller-Schwarze and Lixing Sun gather a wealth of scientific knowledge about both the North American and Eurasian beaver species. The Beaver is designed to satisfy the curiosity and answer the questions of anyone with an interest in these animals, from students who enjoy watching beaver ponds at nature centers to homeowners who hope to protect their landscaping. Photographs taken by the authors document every aspect of beaver behavior and biology, the variety of their constructions, and the habitats that depend on their presence. Beaver facts: Just as individual beavers shape their immediate surroundings, so did the distribution of beavers across North America influence the paths of English and French explorers and traders. As a result of the fur trade, beavers were wiped out across large areas of the United States. Reintroduction efforts led to the widespread establishment of these resilient animals, and now they are found throughout North America, Europe, and parts of the southern hemisphere. Beaver meadows provided early settlers with level, fertile pastures and hayfields. Based on the fossil record, the smallest extinct beaver species were the size of a muskrat, and the largest may have reached the size of a black bear (five to six times as large as today's North American beavers). Beaver-gnawed wood has been found alongside the skeleton of a mastodon. Some beavers remain in the home lodge for an extra year to assist their parents in raising younger siblings. They feed, groom, and guard the newborn kits. In 1600, beaver ponds covered eleven percent of the upper Mississippi and Missouri Rivers' watershed above Thebes, Illinois. Restoring only 3 percent of the original wetlands might suffice to prevent catastrophic floods such as those in the early 1990s."
Author: Barry S. C. Leadbeater
Publisher: Cambridge University Press
ISBN: 131612326X
Category : Science
Languages : en
Pages : 331
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Book Description
Choanoflagellates have three distinctive claims to fame: they are the closest, living, unicellular relatives of animals; they are a major component of aquatic microbial foodwebs; and one group is remarkable for its siliceous basket-like coverings. This landmark book offers a unique synthesis of over forty years of choanoflagellates research. Key areas are covered, from the phylogenetic evidence supporting the sister-group relationship between choanoflagellates and Metazoa, to choanoflagellate distribution and diversity in marine and freshwater environments. The structure and assembly of choanoflagellate loricae is also presented together with a full discussion of a novel example of 'regulatory evolution', suggesting that the switch from nudiform to tectiform cell division and lorica production was achieved by a sudden reorganisation of existing structures and mechanisms. Providing an authoritative summary of what is currently known about choanoflagellates, this title will serve as a foundation upon which future research and discussion can take place.
Author: Andrew T. Smith
Publisher: JHU Press
ISBN: 1421423413
Category : Science
Languages : en
Pages : 281
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Book Description
The definitive guide to all lagomorphs—pikas, rabbits, and hares. Numbering 92 species worldwide, members of the order Lagomorpha are familiar to people throughout the world, and yet their remarkable diversity and ecological importance are often underappreciated. In this book, Andrew T. Smith and his colleagues bring together the world’s lagomorph experts to produce the most comprehensive reference on the order ever published, featuring detailed species accounts, stunning color photos, and up-to-date range maps. Contributors highlight the key ecological roles that lagomorphs play and explain in depth how scientists around the globe are working to save vulnerable populations. Thematic introductory chapters cover a broad spectrum of information about pikas, rabbits, and hares, from evolution and systematics to diseases and conservation. Each animal account begins with the complete scientific and common names for the species, followed by a detailed description of appearance and unique morphological characteristics, including a range of standard measurements of adult specimens. Subsequent sections discuss known paleontological data concerning the species, the current state of its taxonomy, and geographic variation. Each account also includes dedicated sectioins on habitat and diet, reproduction and development, ecology, behavior, and management. The definitive work on lagomorphs, this book is an invaluable reference for naturalists, professional biologists, and students. It will also be beneficial for those conducting biodiversity surveys and conservation throughout the world.
Author: Hson-Mou Chang
Publisher: World Scientific
ISBN: 9789810236922
Category : Medical
Languages : en
Pages : 742
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Book Description
This book is the first volume of a comprehensive 2-volume book covering modern pharmacological and clinical studies of the most commonly used Chinese herbal drugs. It contains monographs of 250 kinds of the most commonly used Chinese Materia Medica. The information on each herb was compiled by a research specialist active in the scientific investigation of that particular type of herb. The description on each drug includes an introduction (source, character and taste, actions and indications according to traditional Chinese medicine etc.), chemical composition, pharmacology, clinical studies, adverse effects and references. The translation of the book into English was done by qualified professionals in the field and the terms used are consistent with those used in Index Medicus, Chemical Abstracts and Botanical journals.
Author: Max Sparreboom
Publisher: BRILL
ISBN: 9004285628
Category : Science
Languages : en
Pages : 431
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Book Description
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).
