WG: Dragonflies PDF Download
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Author: Cynthia Berger
Publisher: Stackpole Books
ISBN: 0811751066
Category : Nature
Languages : en
Pages : 140
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Book Description
• First title in Stackpole Books' new Wild Guide series • A complete, expert introduction to the world of dragonflies and also covers damselflies • Detailed color drawings of different species and behaviors Dazzling in appearance, idiosyncratic in behavior, dragonflies and damselflies have long captured the imaginations of nature lovers. In this illustrated natural history guide, Cynthia Berger takes the reader on a whirlwind trip through the lives of these intriguing insects, from their birth underwater (where they actually spend most of their lives as ferocious nymphs) to their miraculous transformation into free-flying adults. Features a field guide to the most common North American species--including life-size silhouettes for easy identification--as well as tips for observing dragonflies in the wild and attracting them to your backyard.
Author: Cynthia Berger
Publisher: Stackpole Books
ISBN: 0811751066
Category : Nature
Languages : en
Pages : 140
Get Book Here
Book Description
• First title in Stackpole Books' new Wild Guide series • A complete, expert introduction to the world of dragonflies and also covers damselflies • Detailed color drawings of different species and behaviors Dazzling in appearance, idiosyncratic in behavior, dragonflies and damselflies have long captured the imaginations of nature lovers. In this illustrated natural history guide, Cynthia Berger takes the reader on a whirlwind trip through the lives of these intriguing insects, from their birth underwater (where they actually spend most of their lives as ferocious nymphs) to their miraculous transformation into free-flying adults. Features a field guide to the most common North American species--including life-size silhouettes for easy identification--as well as tips for observing dragonflies in the wild and attracting them to your backyard.
Author:
Publisher:
ISBN:
Category : Entomology
Languages : en
Pages : 370
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Book Description
Author: Alfredo V. Peretti
Publisher: Springer
ISBN: 3319178946
Category : Science
Languages : en
Pages : 525
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Book Description
This timely book revisits cryptic female choice in arthropods, gathering detailed contributions from around the world to address key behavioral, ecological and evolutionary questions. The reader will find a critical summary of major breakthroughs in taxon-oriented chapters that offer many new perspectives and cases to explore and in many cases unpublished data. Many groups of arthropods such as spiders, harvestmen, flies, moths, crickets, earwigs, beetles, eusocial insects, shrimp and crabs are discussed. Sexual selection is currently the focus of numerous and controversial theoretical and experimental studies. Selection in mating and post-mating patterns can be shaped by several different mechanisms, including sperm competition, extreme sexual conflict and cryptic female choice. Discrimination among males during or after copulation is called cryptic female choice because it occurs after intromission, the event that was formerly used as the definitive criterion of male reproductive success and is therefore usually difficult to detect and confirm. Because it sequentially follows intra- and intersexual interactions that occur before copulation, cryptic female choice has the power to alter or negate precopulatory sexual selection. However, though female roles in biasing male paternity after copulation have been proposed for a number of species distributed in many animal groups, cryptic female choice continues to be often underestimated. Furthermore, in recent years the concept of sexual conflict has been frequently misused, linking sexual selection by female choice irrevocably and exclusively with sexually antagonistic co-evolution, without exploring other alternatives. The book offers an essential source of information on how two fields, selective cooperation and individual sex interests, work together in the context of cryptic female choice in nature, using arthropods as model organisms. It is bound to spark valuable discussions among scientists working in evolutionary biology across the world, motivating new generations to unveil the astonishing secrets of sexual biology throughout the animal kingdom.
Author:
Publisher: University of Utah Press
ISBN: 1607819686
Category : Foreign Language Study
Languages : en
Pages : 859
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Book Description
Based on extensive fieldwork that spanned more than 50 years, this comprehensive dictionary is a monumental achievement and will help to preserve this American Indian language that is nearing extinction.
Author:
Publisher:
ISBN:
Category : Zoological museums
Languages : en
Pages : 824
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Book Description
Author: Paul W. Riegert
Publisher: Entomological Society of Canada ; [Edmonton] : Entomological Society of Alberta
ISBN:
Category : Entomologists
Languages : en
Pages : 64
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Book Description
Author: Owen Thetford
Publisher:
ISBN:
Category : Airplanes, Military
Languages : en
Pages : 440
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Book Description
Author: David Downie
Publisher: Bloomsbury Publishing USA
ISBN: 159884153X
Category : Science
Languages : en
Pages : 356
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Book Description
An accessible introduction to climate change that outlines key scientific, economic, and political issues, reviews how the global community has addressed the issue to date, and discusses the options being explored for further action. Climate Change: A Reference Handbook offers readers a way to separate science from politics on this crucial and often contentious issue. It provides a comprehensive introduction to the science and public policy of climate change, including discussion of historical developments, today's key concepts, and the future of climate science and policy. Climate Change begins by explaining the science behind global climate change, including the growing consensus that human activity is a major contributing factor. It then takes an objective look at the key conflicts in climate science and policy, describes those that have been resolved, and offers a balanced review of proposals for those that have not. A separate chapter focuses on the scientific, economic, and political aspects of climate change as they are playing out specifically in the United States.
Author: P. J. van Helsdingen
Publisher: Council of Europe
ISBN: 9789287130624
Category : Political Science
Languages : en
Pages : 192
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Book Description
The Bern Convention = Convention on the Conservation of European Wildlife and Natural Habitats. - On title page: EIS [= European Invertebrate Survey]
Author: Gábor Horváth
Publisher: Springer Science & Business Media
ISBN: 3662093871
Category : Science
Languages : en
Pages : 465
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Book Description
The subject of this volume is two-fold. First, it gathers typical polarization patterns occurring in nature. Second, it surveys the polarization-sensitive ani mals, the physiological mechanisms and biological functions of polarization sensitivity as weIl as the polarization-guided behaviour in animals. The monograph is prepared for biologists, physicists and meteorologists, espe cially for experts of atmospheric optics and animal vision, who wish to under stand and reveal the message hidden in polarization patterns of the optical environment not directly accessible to the human visual system, but measur able by polarimetry and perceived by many animals. Our volume is an attempt to build a bridge between these two physical and biological flelds. In Part I we introduce the reader to the elements of imaging polarimetry. This technique can be efflciently used, e. g. in atmospheric optics, remote sens ing and biology. In Part 11 we deal with typical polarization patterns of the natural optical environment. Sunrise/sunset, clear skies, cloudy skies, moonshine and total solar eclipses all mean quite different illumination conditions, wh ich also affect the spatial distribution and strength of celestial polarization. We pre sent the polarization patterns of the sky and its unpolarized (neutral) points under sunlit, moonlit, clear, cloudy and eclipsed conditions as a function of solar elevation. The polarization pattern of a rainbow is also shown. That part of the spectrum is derived in which perception of skylight polarization is optimal under partly cloudy skies.
