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 : 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: United States. Department of the Interior. Library
Publisher:
ISBN:
Category : Library catalogs
Languages : en
Pages : 804
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Book Description
Author: R.R. Bowker Company. Department of Bibliography
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1072
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Author: Academy of Natural Sciences of Philadelphia. Library
Publisher:
ISBN:
Category : Natural history
Languages : en
Pages : 766
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Book Description
Author: William Procter
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 256
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Book Description
Author: William L. Halvorson
Publisher: University of Arizona Press
ISBN: 081655241X
Category : Science
Languages : en
Pages : 375
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Book Description
The southwestern deserts stretch from southeastern California to west Texas and then south to central Mexico. The landscape of this region is known as basin and range topography featuring to “sky islands” of forest rising from the desert lowlands which creates a uniquely diverse ecology. The region is further complicated by an international border, where governments have caused difficulties for many animal populations. This book puts a spotlight on individual research projects which are specific examples of work being done in the area and when they are all brought together, to shed a general light of understanding the biological and cultural resources of this vast region so that those same resources can be managed as effectively and efficiently as possible. The intent is to show that collaborative efforts among federal, state agency, university, and private sector researchers working with land managers, provides better science and better management than when scientists and land managers work independently.
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: United States. Environmental Protection Agency. Office of Water
Publisher:
ISBN:
Category : Water quality bioassay
Languages : en
Pages : 344
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Book Description
