Author: H. Randall Hepburn
Publisher: Springer Science & Business Media
ISBN: 3662036045
Category : Science
Languages : en
Pages : 378
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Book Description
A comprehensive review of the honeybees of Africa on a subspecies as well as by country basis. Includes an updated multivariate analysis of the subspecies based on the merger of the Ruttner database (Oberursel) and that of Hepburn & Radloff (Grahamstown) for nearly 20,000 bees. Special emphasis is placed on natural zones of hybridisation and introgression of different populations; seasonal cycles of development in different ecological-climatological zones of the continent; swarming, migration and absconding; and an analysis of the bee flora of the continent. The text is supplemented by tables containing quantitative data on all aspects of honeybee biology, and by continental and regional maps.
Author: Brian O. K. Reeves
Publisher:
ISBN:
Category : Glacier National Park (Mont.)
Languages : en
Pages : 342
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Book Description
Author: W. Geoffrey Arnott
Publisher: Routledge
ISBN: 1134556268
Category : History
Languages : en
Pages : 304
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Book Description
Birds in the Ancient World from A to Z gathers together the ancient information available, listing all the names that ancient Greeks gave their birds and all their descriptions and analyses. W. Geoffrey Arnott identifies as many of them as possible in the light of modern ornithological studies. The ancient Greek bird names are transliterated into English script, and all that the ancients said about birds is presented in English. This book is accordingly the first complete discussion of ancient bird names that will be accessible to readers without ancient Greek. The only large-scale examination of ancient birds for seventy years, the book has an exhaustive bibliography (partly classical scholarship and partly ornithological) to encourage further study, and provides students and ornithologists with the definitive study of ancient birds.
Author: James H. Speer
Publisher: University of Arizona Press
ISBN: 0816526850
Category : Science
Languages : en
Pages : 360
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Book Description
This comprehensive text addresses all of the subjects that a reader who is new to the field will need to know and will be a welcome reference for practitioners at all levels. It includes a history of the discipline, biological and ecological background, principles of the field, basic scientific information on the structure and growth of trees, the complete range of dendrochronology methods, and a full description of each of the relevant subdisciplines.
Author: John Russel Bartlett
Publisher:
ISBN:
Category :
Languages : en
Pages : 456
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Book Description
Author: Brain F. Chabot
Publisher: Springer Science & Business Media
ISBN: 9400948301
Category : Science
Languages : en
Pages : 704
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Book Description
Although, as W.D. Billings notes in his chapter in this book. the development of physiological ecology can be traced back to the very beginnings of the study of ecology it is clear that the modern development of this field in North America is due in the large part to the efforts of Billings alone. The foundation that Billings laid in the late 1950s came from his own studies on deserts and subsequently arctic and alpine plants, and also from his enormous success in instilling enthusiasm for the field in the numerous students attracted to the plant ecology program at Duke University. Billings' own studies provided the model for subsequent work in this field. Physiological techniques. normally confined to the laboratory. were brought into the field to examine processes under natural environmental conditions. These field studies were accompanied by experiments under controlled conditions where the relative impact of various factors could be assessed and further where genetic as opposed to environmental influences could be separated. This blending of field and laboratory approaches promoted the design of experiments which were of direct relevance to understanding the distribution and abundance of plants in nature. Physiological mechanisms were studied and assessed in the context of the functioning of plants under natural conditions rather than as an end in itself.
Author: John Muir
Publisher: Read Books Ltd
ISBN: 1447488385
Category : Nature
Languages : en
Pages : 258
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Book Description
First published in 1901, “Our National Parks” is a fantastic guide to the wild mountain forest reservations and national parks of the United States, exploring their beauty and usefulness in an attempt to encourage contemporary readers to go out and enjoy the natural wonders of North America. John Muir (1838–1914) was an influential Scottish-American naturalist, environmental philosopher, botanist, zoologist, author, and glaciologist who famously fought to preserve wilderness in the United States of America. Muir's work describing his adventures in nature have been read by millions the world over and his activism has helped to conserve such important places of natural beauty as the Yosemite Valley and Sequoia National Park in America. Contents include: “The Wild Parks and Forest Reservations of the West”, “The Yellowstone National Park”, “The Yosemite National Park”, “The Forests of the Yosemite Park”, “The Wild Gardens of the Yosemite Park”, “Among the Animals of the Yosemite”, “Among the Birds of the Yosemite”, “The Fountains and Streams of the Yosemite National Park”, etc. Other notable works by this author include: “My First Summer in the Sierra” (1911), “Steep Trails” (1918), and “The Story of My Boyhood and Youth” (1913). A Thousand Fields is republishing this classic book now complete with a biographical sketch of the author.
Author: Dharam P. Abrol
Publisher: Springer Science & Business Media
ISBN: 9400719426
Category : Science
Languages : en
Pages : 812
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Book Description
This book has a wider approach not strictly focused on crop production compared to other books that are strictly oriented towards bees, but has a generalist approach to pollination biology. It also highlights relationships between introduced and wild pollinators and consequences of such introductions on communities of wild pollinating insects. The chapters on biochemical basis of plant-pollination interaction, pollination energetics, climate change and pollinators and pollinators as bioindicators of ecosystem functioning provide a base for future insights into pollination biology. The role of honeybees and wild bees on crop pollination, value of bee pollination, planned honeybee pollination, non-bee pollinators, safety of pollinators, pollination in cages, pollination for hybrid seed production, the problem of diseases, genetically modified plants and bees, the role of bees in improving food security and livelihoods, capacity building and awareness for pollinators are also discussed.
Author: Jean-Michel Onana
Publisher: Royal Botanic Gardens Kew
ISBN: 9781842464298
Category : Angiosperms
Languages : en
Pages : 0
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Book Description
This is tropical Africa's first Red Data book for plants. Cameroon contains tropical Africa's most species-diverse hotspots for plants; many are rare and threatened with extinction. In the book 815 species are documented as being threatened using IUCN global assessments, most being assessed for the first time. Short species descriptions to aid identification in the field are given, as well as notes on habitats and threats, together with distribution maps and management suggestions to assist better conservation.
Author: Tim M. Berra
Publisher: University of Chicago Press
ISBN: 0226044432
Category : Science
Languages : en
Pages : 645
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Book Description
With more than 29,000 species, fishes are the most diverse group of vertebrates on the planet. Of that number, more than 12,000 species are found in freshwater ecosystems, which occupy less than 1 percent of the Earth’s surface and contain only 2.4 percent of plant and animal species. But, on a hectare-for-hectare basis, freshwater ecosystems are richer in species than more extensive terrestrial and marine habitats. Examination of the distribution patterns of fishes in these fresh waters reveals much about continental movements and climate changes and has long been critical to biogeographical studies and research in ecology and evolution. Tim Berra’s seminal resource, Freshwater Fish Distribution,maps the 169 fish families that swim in fresh water around the world. Each family account includes the class, subclass, and order; a pronunciation guide to the family name; life cycle information; and interesting natural history facts. Each account is illustrated, many with historical nineteenth-century woodcuts. Now available in paperback, this heavily cited work in ichthyology and biogeography will serve as a reference for students, a research support for professors, and a helpful guide to tropical fish hobbyists and anglers.
