CYCADS OF THE WORLD

Download Cycads Of The World ebook PDF or Read Online books in PDF, EPUB, and Mobi Format. Click Download or Read Online button to CYCADS OF THE WORLD book pdf for free now.

Cycads Of The World

Author : David Jones
ISBN : 187633469X
Genre : Nature
File Size : 34.55 MB
Format : PDF, Mobi
Download : 350
Read : 1176

With Cycads Of The World, David Jones has achieved that difficult task of writing a scientifically accurate text which is both easy to read and understand. The book covers all 185 living species in their 11 genera. It has over 250 colour photographs, many descriptive maps and 16 fine old colour engravings previously hidden away in antique volumes. The book will appeal to gardeners, landscape architects, horticulturists, botanists, conservationists and curious general readers alike.
Category: Nature

Plants Of The World

Author : Maarten J. M. Christenhusz
ISBN : 9780226522920
Genre : Gardening
File Size : 79.69 MB
Format : PDF
Download : 353
Read : 787

Evolution of land plant -- Plants and human culture -- Naming plants -- Classification and the angiosperm phylogeny group
Category: Gardening

Wildlife In A Changing World

Author : Jean-Christophe Vié
ISBN : 9782831710631
Genre : Nature
File Size : 31.52 MB
Format : PDF, Mobi
Download : 805
Read : 1039

Wildlife in a Changing World presents an analysis of the 2008 IUCN Red List of Threatened Species. Beginning with an explanation of the IUCN Red List as a key conservation tool, it goes on to discuss the state of the world’s species and provides the latest information on the patterns of species facing extinction in some of the most important ecosystems in the world, highlighting the reasons behind their declining status. Areas of focus in the report include: freshwater biodiversity, the status of the world’s marine species, species susceptibility to climate change impacts, the Mediterranean biodiversity hot spot, and broadening the coverage of biodiversity assessments.
Category: Nature

Cycads

Author : John Donaldson
ISBN : MINN:31951D02261253R
Genre : Social Science
File Size : 24.94 MB
Format : PDF, Docs
Download : 508
Read : 244

The IUCN/SSC Cycad ACtion Plan brings together the best available information on this ancient and fascinating group of plants. Cycads were a dominant part of the earth's flora during the age of the dinosaurs and many species were common even in more recent times. However, many of the 297 species and subspecies dealt with in the Cycad Action Plan have been badly affected by habitat destruction and plant collecting within the last century. As a result, more than half the known species are now classified as threatened, and the cycads stand out as one of the most threatened groups of plants in this world.The Action Plan provides an overview of all the cycads and the threats to their survival. This is followed by separate assessments for the four broad regions where cycads now occur, namely Africa and the Indian Ocean Islands, Australia, Asia, and the New World. Trade in cycads has had a substantial impact on wild cycad populations and there is a separate chapter on trade and the effectiveness of control measures such as CITES. In addition, with so many species facing extinction in the wild, garden collections have become increasingly important and we have assessed the global status of cycad collections.Finally, the Cycad Action Plan presents a set of objectives and actions to reduce the threat to cycads in the wild and to provide ex situ conservation for those that almost certainly will become extinct in the wild. Wherever possible, we have tried to identify and build on innovative projects, such as community-based nurseries, and to link cycad consideration with other global and local initiatives such as the conservation of biodiversity hotspots.
Category: Social Science

The Island Of The Colorblind

Author : Oliver Sacks
ISBN : 9780345805898
Genre : Psychology
File Size : 65.42 MB
Format : PDF
Download : 673
Read : 333

Oliver Sacks has always been fascinated by islands--their remoteness, their mystery, above all the unique forms of life they harbor. For him, islands conjure up equally the romance of Melville and Stevenson, the adventure of Magellan and Cook, and the scientific wonder of Darwin and Wallace. Drawn to the tiny Pacific atoll of Pingelap by intriguing reports of an isolated community of islanders born totally color-blind, Sacks finds himself setting up a clinic in a one-room island dispensary, where he listens to these achromatopic islanders describe their colorless world in rich terms of pattern and tone, luminance and shadow. And on Guam, where he goes to investigate the puzzling neurodegenerative paralysis endemic there for a century, he becomes, for a brief time, an island neurologist, making house calls with his colleague John Steele, amid crowing cockerels, cycad jungles, and the remains of a colonial culture. The islands reawaken Sacks's lifelong passion for botany--in particular, for the primitive cycad trees, whose existence dates back to the Paleozoic--and the cycads are the starting point for an intensely personal reflection on the meaning of islands, the dissemination of species, the genesis of disease, and the nature of deep geologic time. Out of an unexpected journey, Sacks has woven an unforgettable narrative which immerses us in the romance of island life, and shares his own compelling vision of the complexities of being human. From the Hardcover edition.
Category: Psychology

From The Ends Of The Earth

Author : Christian Lamb
ISBN : 1903071089
Genre : Gardening
File Size : 73.28 MB
Format : PDF
Download : 572
Read : 966

What risks did the early plant collectors take to bring us the plants we know and love? Who foudn what and where? And how similar are their finds to the plants we grow today? Christian Lamb has been to extraordinary lengths to find out. This lively and richly-illustrated book is all about the special plants that Christian grows in her small garden in Cornwall, which she calls her 'Living Plant Museum'.
Category: Gardening

Evolution In A Toxic World

Author : Emily Monosson
ISBN : 9781610912211
Genre : Science
File Size : 74.90 MB
Format : PDF, ePub
Download : 262
Read : 1165

With BPA in baby bottles, mercury in fish, and lead in computer monitors, the world has become a toxic place. But as Emily Monosson demonstrates in her groundbreaking new book, it has always been toxic. When oxygen first developed in Earth's atmosphere, it threatened the very existence of life: now we literally can't live without it. According to Monosson, examining how life adapted to such early threats can teach us a great deal about today's (and tomorrow's) most dangerous contaminants. While the study of evolution has advanced many other sciences, from conservation biology to medicine, the field of toxicology has yet to embrace this critical approach. In Evolution in a Toxic World, Monosson seeks to change that. She traces the development of life's defense systems—the mechanisms that transform, excrete, and stow away potentially harmful chemicals—frommore thanthree billion years ago to today. Beginning with our earliest ancestors' response to ultraviolet radiation, Monosson explores the evolution of chemical defenses such as antioxidants, metal binding proteins, detoxification, and cell death. As we alter the world's chemistry, these defenses often become overwhelmed faster than our bodies can adapt. But studying how our complex internal defense network currently operates, and how it came to be that way, may allow us to predict how it will react to novel and existing chemicals. This understanding could lead to not onlybetter management and preventative measures, but possibly treatment of current diseases. Development of that knowledge starts with this pioneering book.
Category: Science