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Author: Thomas E. Martin Publisher: Oxford University Press ISBN: 0195359178 Category : Science Languages : en Pages : 506
Book Description
The apparent decline in numbers among many species of migratory songbirds is a timely subject in conservation biology, particularly for ornithologists, ecologists, and wildlife managers. This book is an attempt to discuss the problem in full scope. It presents an ambitious, comprehensive assessment of the current status of neotropical migratory birds in the U.S., and the methods and strategies used to conserve migrant populations. Each chapter is an essay reviewing and assessing the trend from a different viewpoint, all written by leaders in the fields of ornithology, conservation, and population biology.
Author: Thomas E. Martin Publisher: Oxford University Press ISBN: 0195359178 Category : Science Languages : en Pages : 506
Book Description
The apparent decline in numbers among many species of migratory songbirds is a timely subject in conservation biology, particularly for ornithologists, ecologists, and wildlife managers. This book is an attempt to discuss the problem in full scope. It presents an ambitious, comprehensive assessment of the current status of neotropical migratory birds in the U.S., and the methods and strategies used to conserve migrant populations. Each chapter is an essay reviewing and assessing the trend from a different viewpoint, all written by leaders in the fields of ornithology, conservation, and population biology.
Author: Manomet Bird Observatory (Mass.) Publisher: Smithsonian Books (DC) ISBN: Category : Nature Languages : en Pages : 632
Book Description
For more than a decade ornithologists have suspected that migrant landbird populations in the United States and Canada are declining. Fragmented forests in the northern breeding grounds and the loss of habitats in tropical wintering zones have been suggested as two major factors in the population declines. This is the first technical volume to focus exclusively on the question of northern hemispheric migratory landbird declines and their conservation. More than one hundred leading scholars working in the Americas and the Caribbean report on the problems facing these birds and suggest strategies for research and conservation. The book details the basic ecology of many Neotropical migrant landbirds in both temperate and tropical regions. Individual reports--each with a Spanish abstract--probe the reasons for population changes, discuss species behavior during summer and winter months, and gauge the impact of environmental events on landbirds. This book arose out of a 1989 symposium at Woods Hole, Massachusetts, hosted by the Manomet Bird Observatory--a meeting widely credited for bringing Neotropical migrant landbird conservation to the forefront of attention.
Author: Russell Greenberg Publisher: JHU Press ISBN: 9780801881077 Category : Nature Languages : en Pages : 502
Book Description
For centuries biologists have tried to understand the underpinnings of avian migration: where birds go and why, why some migrate and some do not, how they adapt to a changing environment, and how migratory systems evolve. Twenty-five years ago the answers to many of these questions were addressed by a collection of migration experts in Keast and Morton's classic work Migrant Birds in the Neotropics. In 1992, Hagan and Johnston published a follow-up book, Ecology and Conservation of Neotropical Migrant Landbirds. In Birds of Two Worlds Russell Greenberg and Peter Marra bring together the world's experts on avian migration to discuss its ecology and evolution. The contributors move the discussion of migration to a global stage, looking at all avian migration systems and delving deeper into the evolutionary foundations of migratory behavior. Readers interested in the biology, behavior, ecology, and evolution of birds have waited a decade to see a worthy successor to the earlier classics. Birds of Two Worlds will complete the trilogy and become indispensable for ornithologists, evolutionary biologists, serious birders, and public and academic libraries.
Author: Barbara Tellman Publisher: DIANE Publishing ISBN: 0788178121 Category : Languages : en Pages : 403
Book Description
Proceedings of a conf. on the major problems facing grasslands in arid & semi-arid regions of the U.S. & Mexico & to seek solutions to those problems. Grasslands in many parts of the Southwest & northern Mexico are facing serious threats -- from urbanization & subdivision development to spread of invasive plant species to conflicts over grazing policy. Target groups for participation included private landowners, non-profit groups, government agencies, environmental advocates, economists, scientists, etc. Emphasized practical, hands-on mgmt. methods, including time in grasslands managed under a variety of techniques.
Author: Frank E. Wozniak Publisher: ISBN: Category : Government publications Languages : en Pages : 632
Book Description
This publication reviews both published and unpublished sources on Puebloan, Hispanic, and AngloAmerican irrigation systems in the Rio Grande Valley. Settlement patterns and Spanish and Mexican land grants in the valley are also discussed. The volume includes an annotated bibliography.
Author: Erik I. Johnson Publisher: CRC Press ISBN: 1351646079 Category : Nature Languages : en Pages : 737
Book Description
Molt is an important avian life history event in which feathers are shed and replaced. The timing, duration, seasonality, extent and pattern of molt follows certain strategies and this book reviews and describes these strategies for nearly 190 species based on information gathered from a 30-year study of Central Amazonian birds. Most species accounts are illustrated with several color photos focusing on wing and tail feather molt, molt limits, and how to use these patterns to accurately age birds. Published in collaboration with and on behalf of the American Ornithological Society, this volume in the highly-regarded Studies in Avian Biology series is a rich source of life history information for ornithologists working on tropical birds.
Author: Thomas E. Martin
Author: Thomas E. Martin
Author: Manomet Bird Observatory (Mass.)
Author: Russell Greenberg
Author: Barbara Tellman
Author: 
Author: Deborah M. Finch
Author: 
Author: Frank E. Wozniak
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Author: Erik I. Johnson