Libros de ciencias, página 516 de 2706

Conservation biology is fast emerging as a major new discipline, which incorporates biological principles in the design of effective strategies for the sustainable management of populations, species and entire ecosystems. This beautifully illustrated textbook introduces students to conservation biology, the science of preserving biodiversity. It begins by taking the reader on a tour of the many and varied ecosystems of our planet, providing a setting in which to explore the factors that have led to the alarming loss of biodiversity that we now see. In particular the fundamental problems of habitat loss and fragmentation, habitat disturbance and the non-sustainable exploitation of species in both aquatic and terrestrial ecosystems are explored. The methods that have been developed to address these problems, from the most traditional forms of conservation, to new approaches at genetic to landscape scales are then discussed, showing how the science can be put into practice.

The conservation of biological diversity depends on people s knowledge and actions This book presents the theory and practice for creating effective education and outreach programmes for conservation The authors describe an exciting array of techniques for enhancing school resources marketing environmental messages using social media developing partnerships for conservation and designing on site programmes for parks and community centres Vivid case studies from around the world illustrate techniques and describe planning implementation and evaluation procedures enabling readers to implement their own new ideas effectively Conservation Education and Outreach Techniques now in its second edition and updated throughout includes twelve chapters illustrated with numerous photographs showing education and outreach programmes in action each incorporating an extensive bibliography Helpful text boxes provide practical tips guidelines and recommendations for further exploration of the chapter topics This book will be particularly relevant to conservation scientists resource managers environmental educators students and citizen activists It will also serve as a handy reference and a comprehensive text for a variety of natural resource and environmental pro

Dragonflies are among the most familiar and popular of all insects deeply embedded in human cultural history They are iconic and tell us much about the environments in which we and they live Their conservation is an important part of biodiversity conservation One modern dragonfly species is listed as extinct with many others currently threatened It is now essential to increase conservation efforts towards saving these threatened species with strategies now available for doing this Recovery of dragonfly populations goes hand in hand with improvements to both freshwater conditions and bank vegetation quality In contrast some other dragonfly species have benefitted greatly from human transformation of the landscape with artificial ponds in particular increasing the population levels of many species In turn climate change is seeing many geographical range shifts Dragonflies are variously sensitive to the health of freshwater systems and the quality of vegetation along rivers and around ponds Dragonflies are excellent indicators in these times of great concern over the quality of our freshwater supplies Their wide range of sensitivities enables us to measure the extent to which freshwater ecosystems are either deteriorating or are improving when we undertake

The Conservation of Plant Biodiversity highlights the different levels of biological organisation at which conservation is being addressed - the gene, the species and the community. Conservation biology is faced with several controversial issues such as the dichotomy between the preservation of individual species versus a broader focus on the environment, the relative importance to give to endangered species, the design and management of reserves and the drive for increasing agricultural productivity through plant improvement versus the drive to maintain traditional peasant varieties in cultivation. These and other issues are dealt with here by emphasising and exploring the underlying scientific principles. The conservation of whole communities emerges as the paramount strategy for maintaining the evolutionary potential of plant life.

Conservation physiology is a rapidly expanding multidisciplinary field that utilizes physiological knowledge and tools to understand and solve conservation challenges This novel text provides the first consolidated overview of its scope purpose and applications with a focus on wildlife It outlines the major avenues and advances by which conservation physiology is contributing to the monitoring management and restoration of wild animal populations This book also defines opportunities for further growth in the field and identifies critical areas for future investigation By using a series of global case studies contributors illustrate how approaches from the conservation physiology toolbox can tackle a diverse range of conservation issues including the monitoring of environmental stress predicting the impact of climate change understanding disease dynamics improving captive breeding and reducing human wildlife conflict Moreover by acting as practical road maps across a diversity of sub disciplines these case studies serve to increase the accessibility of this discipline to new researchers The diversity of taxa biological scales and ecosystems highlighted illustrate the far reaching nature of the discipline and allow readers to gain an appreciation for

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Se presenta una exposición sistemática sintética de los aspectos vegetales mencionados en El Quijote, haciendo análisis de referencias a plantas en general y cotejo de citas de una especie vegetal con otras en obras clasicas, como Iliada, Odisea, Eneida o Metamorfosis, asi como en otros textos clasicos de la literatura universal, y tradiciones populares. Con todo ello aborda la reconstruccion de los recorridos de Don Quijote. Para ello hace un analisis de terminologia y usos en la epoca de elaboracion del Quijote, para alcanzar la mas probable identificacion de especies, pasando a designarlas por sus nombres cientificos.

Todo lo que hay que saber para conseguir un pequeño huerto. Consejos sencillos para preparar el suelo, sembrar, plantar y recolectar. Incluye una ficha completa de más de 30 hortalizas y plantas aromaticas, indicando su descripcion, variedades y consejos especificos de cultivo.

Consejos útiles para conseguir un auténtico jardín en la ciudad y aprovechar al máximo un espacio pequeño, que proteja su intimidad respetando el medio ambiente. Una pequeña guía, ideal para el jardinero urbano, que le ayudara a escoger las plantas mejor adaptadas, crear un huerto e incluso una zona de juegos para los niños.