Pesquisas
Author :
Publisher :
Page : 600 pages
File Size : 13,48 MB
Release : 2000
Category : Botany
ISBN :
Author :
Publisher :
Page : 600 pages
File Size : 13,48 MB
Release : 2000
Category : Botany
ISBN :
Author :
Publisher :
Page : 1160 pages
File Size : 47,6 MB
Release : 1992
Category : America
ISBN :
Author : Don Moll
Publisher : Oxford University Press
Page : 420 pages
File Size : 20,7 MB
Release : 2004-04-08
Category : Mathematics
ISBN : 9780195102291
The underlying theme of this book is that a widespread, taxonomically diverse group of animals, important both from ecological and human resource perspectives, remains poorly understood and in delcine, while receiving scant attention from the ecological and conservation community. This volume proposes a comprehensive overview of the world's river turtles' ecology, conservation, and management. It begins with a categorization of taxa which inhabit flowing water habitats followed by information on their evolutionary and physical diversity and biogeography. Within the framework of ecology, the authors discuss the composition of river turtle communities in different types of lotic habitats and regions, population dynamics, movements, reproductive characteristics and behavior, predators, and feeding relationships. In a conservation and management section, the authors identify and evaluate the nature and intensity of factors which threaten river turtle survival--almost all of which involve direct human exploitation or indirect effects of human induced habitat alteration and degradation. They then list and evaluate the various schemes which have been proposed or employed to halt declines and restore populations, and make recommendations for future management plans for specific species and regions. In closing, they state their viewpoint concerning future research directions and priorities, and an evaluation of future prospects for survival of the world's river turtle species.
Author : Alec Pridgeon
Publisher : Oxford University Press
Page : 410 pages
File Size : 47,51 MB
Release : 1999
Category : Gardening
ISBN : 9780198507116
Genera Orchidacearum is the first monograph of the world's orchid genera that reflects their long evolutionary history and reveals relationships based on genealogical descent and the most up-to-date DNA data.
Author : David M. Rosenberg
Publisher : Springer
Page : 512 pages
File Size : 50,1 MB
Release : 1993
Category : Nature
ISBN :
North American and European governments have adopted national programs for environmental monitoring and assessment that include the use of aquatic biota. These programs will use a variety of indicators of environmental health; benthic macroinvertebrates are one of the most promising of them. The chapters in this book deal with the many different approaches available for using benthic macroinvertebrates in biological monitoring programs.
Author : Douglas F. Stotz
Publisher : University of Chicago Press
Page : 546 pages
File Size : 10,51 MB
Release : 1996-06
Category : Nature
ISBN : 9780226776309
This unparalleled wealth of finely detailed ecological information on Neotropical bird communities will prove invaluable to all Neotropical wildlife managers, conservation biologists, and serious birders.
Author : Bruce A. Stein
Publisher : Oxford University Press
Page : 426 pages
File Size : 32,47 MB
Release : 2000-03-16
Category : Nature
ISBN : 0198028962
From the lush forests of Appalachia to the frozen tundra of Alaska, and from the tallgrass prairies of the Midwest to the subtropical rainforests of Hawaii, the United States harbors a remarkable array of ecosystems. These ecosystems in turn sustain an exceptional variety of plant and animal life. For species such as salamanders and freshwater turtles, the United States ranks as the global center of diversity. Among the nation's other unique biological features are California's coast redwoods, the world's tallest trees, and Nevada's Devils Hole pupfish, which survives in a single ten-by-seventy-foot desert pool, the smallest range of any vertebrate animal. Precious Heritage draws together for the first time a quarter century of information on U.S. biodiversity developed by natural heritage programs from across the country. This richly illustrated volume not only documents those aspects of U.S. biodiversity that are particularly noteworthy, but also considers how our species and ecosystems are faring, what is threatening them, and what is needed to protect the nation's remaining natural inheritance. Above all, Precious Heritage is a celebration of the extraordinary biological diversity of the United States.
Author : João Paulo Ribeiro Capobianco
Publisher :
Page : 550 pages
File Size : 45,14 MB
Release : 2004
Category : Nature
ISBN :
A situação socioambiental da Amazônia brasileira na virada do milênio. Resultado do esforço coletivo de cientistas, técnicos de órgãos públicos e de organizações não governamentais e lideranças do movimento social, esta obra traz 27 artigos de 47 autores, mais de uma centena de mapas temáticos, extensos bancos de dados e fotos de cinco renomados fotógrafos.
Author : Hugh Synge
Publisher : John Wiley & Sons
Page : 596 pages
File Size : 15,8 MB
Release : 1981
Category : Nature
ISBN :
Includes foundational ideas/papers about the science of rarity conservation. -- taken from review on vendor's site
Author : Marion Harless
Publisher : Krieger Publishing Company
Page : 720 pages
File Size : 46,75 MB
Release : 1989
Category : Nature
ISBN :