Author: Publisher:
ISBN:
Category : Animals
Languages : de
Pages : 1296
Book Description
Acta Zoologica Fennica
Author: The Timber Wolf in Wisconsin
Author: Richard P. ThielPublisher: Univ of Wisconsin Press
ISBN: 9780299139445
Category : Nature
Languages : en
Pages : 284
Book Description
In early 1958, in the far northern town of Cornucopia, Wisconsin's "last" timber wolf was accidentally run over by an automobile. The "humane" intention to end the animal's suffering produced a grisly aftermath: the wolf survived the impact of the car, was bludgeoned with a tire iron twice but survived, and finally had its throat slit with a restaurant knife. This horrifying scene is certainly an apt (if appalling) symbol of the timber wolf's early fate in Wisconsin. Feared, detested, hunted down for state-authorized bounties, the animal was systematically exterminated as an enemy of man and progress. Yet this bleak chapter in the history of conservation has a happier ending. Seventeen years later, in 1975, the timber wolf had officially reestablished itself and, as a protected species, is now flourishing under the care of Wisconsin's Department of Natural Resources. Few can be more caring than the author, a DNR educator in wildlife management. As an inquisitive teenager, Richard Thiel began his pursuit of the Wisconsin timber wolf's story in the mid-1960s and has been at it ever since. The result is this arresting, intensely readable book, a story of fear, mistrust, and misunderstanding that ends, thankfully, as one of hope and appreciation.
The Beaver
Author: Dietland Müller-SchwarzePublisher: Cornell University Press
ISBN: 9780801440984
Category : Nature
Languages : en
Pages : 228
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."
Biology of the Springtails
Author: Stephen P. HopkinPublisher: OUP Oxford
ISBN: 019158925X
Category : Science
Languages : en
Pages : 346
Book Description
Springtails are the most numerous and wide-spread insects in terrestrial ecosystems. They are important ecotoxicological test organisms and have been used extensively to indicate the effects of environmental pollutants and different agricultural regimes on biodiversity in soils. This comprehensive work by the co-author of The biology of millipedes is the only single-volume review of the biology of springtails in the English language to appear this century. The book covers classification, behaviour, physiology, evolution, ecology, and ecotoxicology. An extensive reference section with more than 2500 entries is included together with a complete list of all Collembola genera, a list of studies on the effects of chemicals on springtails, and reference to species checklists for most countries of the world.
Serials Currently Received by the National Agricultural Library, a Keyword Index
Author: National Agricultural Library (U.S.)Publisher:
ISBN:
Category :
Languages : en
Pages : 1338
Book Description
Serials Currently Received by the National Agricultural Library, 1975
Author: National Agricultural Library (U.S.)Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1392
Book Description
Sport Fishery Abstracts
Author: Index of NLM Serial Titles
Author: National Library of Medicine (U.S.)Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1118
Book Description
A keyword listing of serial titles currently received by the National Library of Medicine.
Interrelationships of the Platyhelminthes
Author: D T J LittlewoodPublisher: CRC Press
ISBN: 1482268213
Category : Science
Languages : en
Pages : 373
Book Description
Interrelationships of the Platyhelminthes elucidates the role of the flatworms in the animal kingdom. It brings together results from an international group of experts, spanning many disciplines, who give evidence for the phylogeny of flatworms and constituent major taxa. A combined approach, using traditional comparative techniques along with the modern techniques of molecular phylogeny, is utilized to show that the monophyly of the phylum is not fully established, and that the phylum may in fact consist of two groups: the acoels and their relatives, which are basal metazoans, and the Rhabditophora, which is a more derived group.
List of Journals Indexed by the National Agricultural Library, 1974-76
Author: National Agricultural Library (U.S.)Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 372
Book Description