Centennial of Entomology in Canada 1863-1963 PDF Download
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Author: Glenn B. Wiggins
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Glenn B. Wiggins
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Paolo Palladino
Publisher: Routledge
ISBN: 1134959141
Category : History
Languages : en
Pages : 207
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This study is facilitated by following economic entomologists' and ecologists' changing ideas about different pest control strategies, chiefly 'chemical', 'biological', and 'integrated' control. The author then follows the efforts of one specific group of entomologists, at the University of California, over three generations from their advocacy of 'biological' controls in the 1930s and 40s, through their shifting attention to the development of an 'integrated pest management' in the context of 'big biology' during the 1970s.
Author: Edmund Murton Walker
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 124
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Author: Edmund M. Walker
Publisher: University of Toronto Press
ISBN: 1442638788
Category : Science
Languages : en
Pages : 378
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Dr. Walker and Dr. Corbet make a signal contribution in gathering together all available information on the dragonflies of Canada and Alaska. The order as a whole and the zygoptera are covered. The treatment is not confined to taxonomy and geographical distribution, but includes data on habitats, seasons of adult life, and brief notes on habits when these are available.
Author: George A. Cevasco
Publisher: Bloomsbury Publishing USA
ISBN: 0313036497
Category : Science
Languages : en
Pages : 958
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Casting a wide net, this volume provides personal and professional information on some 445 American and Canadian naturalists and environmentalists, who lived from the late 15th century to the late 20th century. It includes explorers who published works on the natural history of North America, conservationists, ecologists, environmentalists, wildlife management specialists, park planners, national park administrators, zoologists, botanists, natural historians, geographers, geologists, academics, museum scientists and administrators, military personnel, travellers, government officials, political figures and writers and artists concerned with the environment. Some of the subjects are well known. The accomplishments of others are little known. Each entry contains a succinct but careful evaluation of the subject's career and contributions. Entries also include up-to-date bibliographies and information concerning manuscript sources.
Author: Willis Conner Sorensen
Publisher: University of Alabama Press
ISBN: 9780817307554
Category : Science
Languages : en
Pages : 388
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Draws together information from diverse sources to illuminate an important chapter in the history of American science Sorensen asks how it came about that, within the span of forty years, the American entomological community developed from a few gentlemen naturalists with primary links to Europe to a thriving scientific community exercising world leadership in entomological science. He investigates the relationship between American and European entomology, the background of American entomologists, the implications of entomological theory, and the specific links between 19th-century American society and the rapid institutional growth and advances in theoretical and applied entomology. By the 1880s the entomologists constituted the largest single group of American zoologists and the largest group of ecologists in the world. While rooted in the British natural history tradition, these individuals developed a distinctive American style of entomological investigation. Inspired by the concept of the balance of nature, they excelled in field investigations of North American insects with special emphasis on insect pests that threatened crop production in a market-oriented agriculture. During this period, entomologists described over ten times as many North American insect species as had been previously named, and they consolidated their findings in definitive collections. Employing evolutionary theory, they contributed to the growing understanding of insect migration, mimicry, seasonal dimorphism, and the symbiotic relationship of plant and animal species. Americans also led in the revision of insect taxonomy according to the new principles. Their employment of entomological findings in the practical control of agricultural pests set new standards worldwide. Initially ridiculed as eccentric bug hunters, American entomologists eventually achieved stature as agricultural advisers and as investigators into the origin and nature of life. Based primarily on the correspondence of American entomologists, Brethren of the Net draws together information from diverse sources to illuminate an important chapter in the history of American science.
Author:
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ISBN:
Category : Agriculture
Languages : en
Pages : 1366
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Author: Entomological Society of Ontario
Publisher:
ISBN:
Category : Entomology
Languages : en
Pages : 728
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Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1106
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Author: Entomological Society of Canada (1950- )
Publisher:
ISBN:
Category :
Languages : en
Pages : 1168
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