Biological Survey of the Mount Desert Region: (Being a revision of pts. I and VI) The insect fauna with references to methods of capture, food plants, the flora and other biological features. 1946 PDF Download
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Author: William Procter
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 572
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Book Description
Author: William Procter
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 572
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Book Description
Author: William Procter
Publisher:
ISBN:
Category : Natural history
Languages : en
Pages : 570
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Book Description
Author: William Procter
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 570
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Book Description
Author: United States. Department of the Interior. Library
Publisher:
ISBN:
Category : Library catalogs
Languages : en
Pages : 804
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Book Description
Author: William Procter
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 256
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309102898
Category : Technology & Engineering
Languages : en
Pages : 327
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Book Description
Pollinators-insects, birds, bats, and other animals that carry pollen from the male to the female parts of flowers for plant reproduction-are an essential part of natural and agricultural ecosystems throughout North America. For example, most fruit, vegetable, and seed crops and some crops that provide fiber, drugs, and fuel depend on animals for pollination. This report provides evidence for the decline of some pollinator species in North America, including America's most important managed pollinator, the honey bee, as well as some butterflies, bats, and hummingbirds. For most managed and wild pollinator species, however, population trends have not been assessed because populations have not been monitored over time. In addition, for wild species with demonstrated declines, it is often difficult to determine the causes or consequences of their decline. This report outlines priorities for research and monitoring that are needed to improve information on the status of pollinators and establishes a framework for conservation and restoration of pollinator species and communities.
Author: Greg Sherley
Publisher:
ISBN:
Category : Alien plants
Languages : en
Pages : 208
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Book Description
Author: Jean-Christophe Vié
Publisher: IUCN
ISBN: 2831710634
Category : Biodiversity conservation
Languages : en
Pages : 184
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Book Description
"Wildlife in a Changing World" presents an analysis of the 2008 IUCN Red List of Threatened Species. Beginning with an explanation of the IUCN Red List as a key conservation tool, it goes on to discuss the state of the world s species and provides the latest information on the patterns of species facing extinction in some of the most important ecosystems in the world, highlighting the reasons behind their declining status. Areas of focus in the report include: freshwater biodiversity, the status of the world s marine species, species susceptibility to climate change impacts, the Mediterranean biodiversity hot spot, and broadening the coverage of biodiversity assessments."
Author: John Alexander Moore
Publisher: Harvard University Press
ISBN: 9780674794825
Category : Science
Languages : en
Pages : 548
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Book Description
This book makes Moore's wisdom available to students in a lively, richly illustrated account of the history and workings of life. Employing rhetoric strategies including case histories, hypotheses and deductions, and chronological narrative, it provides both a cultural history of biology and an introduction to the procedures and values of science.
Author: Charles J. Krebs
Publisher: Benjamin-Cummings Publishing Company
ISBN: 9780321068798
Category : Science
Languages : en
Pages : 695
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Book Description
This best-selling majors ecology book continues to present ecology as a series of problems for readers to critically analyze. No other text presents analytical, quantitative, and statistical ecological information in an equally accessible style. Reflecting the way ecologists actually practice, the book emphasizes the role of experiments in testing ecological ideas and discusses many contemporary and controversial problems related to distribution and abundance. Throughout the book, Krebs thoroughly explains the application of mathematical concepts in ecology while reinforcing these concepts with research references, examples, and interesting end-of-chapter review questions. Thoroughly updated with new examples and references, the book now features a new full-color design and is accompanied by an art CD-ROM for instructors. The field package also includes The Ecology Action Guide, a guide that encourages readers to be environmentally responsible citizens, and a subscription to The Ecology Place (www.ecologyplace.com), a web site and CD-ROM that enables users to become virtual field ecologists by performing experiments such as estimating the number of mice on an imaginary island or restoring prairie land in Iowa. For college instructors and students.
