Selasa, 19 Oktober 2010

[C324.Ebook] PDF Download The Enchanted Braid: Coming to Terms with Nature on the Coral Reef, by Osha Gray Davidson

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The Enchanted Braid: Coming to Terms with Nature on the Coral Reef, by Osha Gray Davidson

The Enchanted Braid: Coming to Terms with Nature on the Coral Reef, by Osha Gray Davidson



The Enchanted Braid: Coming to Terms with Nature on the Coral Reef, by Osha Gray Davidson

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The Enchanted Braid: Coming to Terms with Nature on the Coral Reef, by Osha Gray Davidson

"There is a word for what Darwin and the rest of us have felt when in the presence of the reef: 'awe.' Confronted with the reef, awe is the most appropriate response. It is probably in our nature. It is also, apparently, in our nature to destroy that which we hold in awe." --from The Enchanted Braid

Of the myriad ecosystems populating the underwater world, coral reefs are by far the most complex. While their stunning beauty has been extolled for centuries, the intricate workings of reef environments remained largely hidden from view. In fact, until the advent of scuba diving just fifty years ago, corals have been among the last natural histories to be extensively explored. The high passion with which scientists have greeted this particular investigation --beginning with the foundational theories of Charles Darwin in 1842--is perhaps unprecedented, but hardly difficult to understand. A phenomenon of both awesome beauty and vital importance, the coral reef is home to the most diverse range of species of any environment on the planet, including fish, shrimps, worms, snails, crabs, sea cucumbers, sea stars, urchins, anemones, and sea squirts.



The crux of reef life, scientists have discovered, lies in nature's most intimate example of symbiosis: the mutually beneficial relationship between the coral polyp and its "tenant," the zooxanthellate algae. Davidson's history begins with this deceptively diminutive hybrid, the engine behind the construction of the limestone-based coral structure. Together, the three elements comprise a unique zoophytalite (animal-plant-mineral) form, or an "enchanted braid."

Aided by an eight-page, full-color photographic insert demonstrating the incredible intricacies of the reef and its unique inhabitants, The Enchanted Braid identifies the approximately 240,000 square miles of coral reef on the planet today as indispensable not only to the livelihood of the oceans but also to humans. The reef is, after all, the "soul of the sea," the spawning ground for tens of thousands of marine species. As sources of food (many islands rely on reefs for all their protein), medicine (corals are used in bone grafts and to fight cancer and leukemia), and detailed insight into the history of climatic conditions, coral reefs are critically important to human life on Earth. However, in a world of oil tanker disasters, global warming, and dwindling natural resources, they are also in grave danger of extinction.

Osha Gray Davidson's urgent clarion call to halt today's man-made degradation of coral reefs is both alarming and persuasive, effectively underscored by the rich historical context of passages from Darwin's captivating diary of his seminal work on reefs 150 years ago. Like the coral reef, The Enchanted Braid is itself a rare hybrid, a graceful combination of aesthetic appreciation, scientific inquiry, and environmental manifesto.

  • Sales Rank: #1606836 in eBooks
  • Published on: 2007-12-10
  • Released on: 2007-12-10
  • Format: Kindle eBook

Amazon.com Review
In this work of scientific journalism, Osha Gray Davidson surveys the condition of the world's great coral-reef systems, which offer habitat to countless diverse species of marine life. Many of those systems are now threatened by development--some, ironically, by the construction of resorts for the ecotourism market. Others have been destroyed by the fishing industry's use of dynamite and cyanide to bring in catches. Some 10 percent of the world's reefs, we learn in Davidson's pages, are already damaged beyond recovery, and another 30 percent are in grave danger of joining them. Combining firsthand travel narrative with abundant documentary research, Davidson makes a good case for the importance of conserving the reefs that remain. --Gregory McNamee

From Publishers Weekly
"Coral reefs are the proving ground for mankind's ability to 'come to terms with nature'Aincluding our own," writes Davidson (The Best of Enemies: Race and Redemption in the New South), who has lived in Key West and studied coral reefs (both above and under water) for years. Davidson traveled and dove around the world to do his research. His book includes many striking facts: oceans cover 71% of the earth's surface; coral reefs are home to approximately one-quarter of all marine species; the most widely cited estimate of square miles around the world covered by coral reefs is 240,000; Charles Darwin's first scientific book was The Structure and Distribution of Coral Reefs (1842). And one of Davidson's most captivating chapters outlines the bizarre sex lives of fish. Despite reefs' grandeur, we humans have destroyed them at alarming rates, Davidson explains, as we have destroyed much of nature. His imaginative language (for example, "Coral reefs are the Russian novels of the sea world") and treatment of scientific terminology are impressive throughout. Davidson believes that "if we are to save the reefs, we must understand them better. But here we have come full circle, we have returned to our initial question. How do you comprehend something as complex as the coral reef?" Davidson's thorough book, which helps to do just that, will appeal primarily to environmentalists and divers but should be read by travelers to ocean settings as well. Eight pages of color photos, not seen by PW.
Copyright 1998 Reed Business Information, Inc.

From Library Journal
Not a scientist but a writer and diver, Davidson (Under Fire: The NRA & the Battle for Gun Control, LJ 5/15/93) has consulted with many scientists and other marine specialists worldwide in writing this book, whose broad scope ranges from Darwin's first views of the coral reef to the International Year of the Reef in 1997. Davidson has dived near many reefs, and his awe of this complex structure is evident. The "enchanted braid" is a double strand. The reef itself, the seagrass beds, and the mangrove forests are the larger braid, and the coral reef alone is a braid of animal (coral polyps), vegetable (algae), and mineral (calcium carbonate deposits). A great deal of science is included, although the presentation is for a general audience. Extensive footnotes and bibliography are useful for further research. This is not a light read but an informative one that covers many points of view. Davidson cares about the future of the reef environment, and this shows in his writing. Recommended for public and academic libraries as a general introduction. (Illustrations not seen.)?Jean E. Crampon, Hancock Biology & Oceanography Lib., Univ. of Southern California, Los Angeles
Copyright 1998 Reed Business Information, Inc.

Most helpful customer reviews

2 of 2 people found the following review helpful.
Excellent read
By Aussiemama67
Even if you have no prior knowledge about reefs, this book explains and makes sense of the entire reef ecosystem. I would highly reccommend it, especially for teenagers with an interest in coral reefs and thier preservation, to spark thier interest in environmental issues.

1 of 1 people found the following review helpful.
Every marine life and coral lover should read this book
By Joni C. Lawrence
I rarely read nonfiction in bed because I fall asleep too quickly. Not so with this book. Davidson's writing is compulsively compelling. Though the book details the disturbing trends affecting the health of coral reefs worldwide, it also offers hope by describing in vivid and accessible detail how corals have survived for millenia. Though they haven't survived rapidly warming surface temperatures like we're seeing today.

Davidson describes coral reefs as "the soul of the sea" and aptly describes their biology and importance to the ocean and to humankind. The book is simultaneously a travel narrative, scientific and environmental treatise, and philosophical look at why we need to take better care of coral reefs and other precious ecosystems. Though the messages in the book are clear that coral reefs are in trouble, Davidson's writing is not filled with gloom and doom and somber predictions of a coral-less ocean. By putting coral reefs in the context of survival, he inspires hope for their future. I cannot recommend this book highly enough!

10 of 10 people found the following review helpful.
Great book! Educational and engaging.
By A Customer
I have read hundreds of articles and books about coral reefs, "The Enchanted Braid" offers one of the best introductions you could ask for into the world of coral reefs. The book features both biological and historical descriptions of coral reefs as well as reporting on what is happening today to coral reefs around the world. It is clear, well written and easy for us "non-scientists" to understand. SCUBA divers, snorkelers and anyone else who loves the ocean should read this book.

See all 7 customer reviews...

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