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| Author | : John Van Denburgh |
| Publisher | : |
| Total Pages | : 390 |
| Release | : 1914 |
| Genre | : Galapagos tortoise |
| ISBN | : |
| Author | : John Van Denburgh |
| Publisher | : |
| Total Pages | : 306 |
| Release | : 1998 |
| Genre | : Galapagos Islands |
| ISBN | : |
| Author | : John Van Denburgh |
| Publisher | : |
| Total Pages | : 374 |
| Release | : 1926 |
| Genre | : Turtles |
| ISBN | : |
| Author | : John Van Denburgh |
| Publisher | : Theclassics.Us |
| Total Pages | : 48 |
| Release | : 2013-09 |
| Genre | : |
| ISBN | : 9781230735863 |
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ...condition in the type of T. becki is an individual variation, since it is the fourth vertebra which is biconvex in my series of seven specimens from Bank's Bay. The condition doubtless is anomalous also in the Charles Island specimen. The differences in proportion of the bones of the limbs and neck correspond with the relative length of these parts in the various races, the number of bones being the same in all. They are proportionally shorter in the dome-shaped races, and longer in those in which the carapace is elevated and compressed anteriorly. These differences are shown in the measurements of the limbs and neck given with the description of each race or species. Certain differences in the skulls of the tortoises of the various races have been pointed out by Dr. Gunther. I believe that the differences he has indicated are all merely individual variations. In a series of 24 skulls from Vilamil, Albemarle, I find all of the variations which Dr. Gunther mentions; and upon careful comparison of this series with one skull from Hood Island (No. 8125), one from Indefatigable (No. 8381), one from James (No. 8105), three from Duncan (Nos. 8378, 8379, and 8380), four from Chatham (Nos. 8127, 8128, 8130, and 8131), and one from Iguana Cove (No. 8179), I can find no constant differences in the skulls of the various races. In the skulls from Vilamil, the frontal region may be flat or somewhat convex. The occipital spine may be short or long, not reaching the posterior borders of the mastoid processes or projecting far behind them, and may or may not rise much above the level of the skull. There is much variation in the shape of the tympanic case and cavity. The fossa in front of the occipital condyle may be deep or very shallow. The...
| Author | : |
| Publisher | : Academic Press |
| Total Pages | : 538 |
| Release | : 2020-11-07 |
| Genre | : Science |
| ISBN | : 0128175559 |
Galapagos Giant Tortoises brings together researchers and conservationists to share the most up-to-date knowledge of Galapagos giant tortoises. Despite being icons of the world-famous Galapagos Archipelago and the target of more than 50 years of conservation research and management, Galapagos giant tortoise evolution and much of their ecology remained unknown until recently. This book documents the history, the pressing conservation issues, and success stories recovering several of the 15 different species of Galapagos tortoises from near extinction.The book begins with an overview of the history of the relationship between humans and Galapagos giant tortoises, starting from initial heavy exploitation of tortoises by pirates and whalers, and extending to the start of the modern conservation era in the 1960s. The book then shifts to biology, describing Galapagos tortoise evolution, taxonomy, ecology, habitats, reproduction, and behavior. Next the decades of conservation efforts and their results are reviewed, including issues of captive breeding, invasive species, introduced diseases, and de-extinction, as well as the current status and distribution of every species. The final portion of the book turns to four case studies of restoration, and then looks ahead to the future of all tortoise populations.The latest volume in the Biodiversity of the World: Conservation from Genes to Landscape series, Galapagos Giant Tortoises is a valuable resource for researchers and conservationists, as well as students of biology, wildlife conservation, and herpetology. Provides a comprehensive overview of the Galapagos giant tortoise species as written and edited by the world’s leading experts Presents examples of restoration of tortoise populations following the near extinction of many of them Describes conservation strategies to ensure the full recovery of all extant species Explores recent efforts using replacement tortoises for extinct species to restore island ecosystems
| Author | : John van Denburgh |
| Publisher | : Forgotten Books |
| Total Pages | : 378 |
| Release | : 2016-12-21 |
| Genre | : Science |
| ISBN | : 9781334677342 |
Excerpt from The Gigantic Land Tortoises of the Galapagos Archipelago In recent and historic times gigantic land tortoises have existed only in certain isolated groups of islands in the Indian and Pacific oceans, where the early explorers found them in almost incredible numbers. The rapidity with which they have disappeared from these islands upon the advent of man, and even upon the advent of the smaller predatory mammals, sufficiently explains their earlier extinction upon all the con tinents where they formerly occurred. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
| Author | : John Van Denburgh |
| Publisher | : Nabu Press |
| Total Pages | : 358 |
| Release | : 2014-03 |
| Genre | : |
| ISBN | : 9781295868834 |
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ The Gigantic Land Tortoises Of The Galapagos Archipelago; Volume 10 Of Expedition Of The California Academy Of Sciences To The Galapagos Islands 1905-1906; Proceedings Of The California Academy Of Sciences John Van Denburgh The Academy, 1914 Galapagos Islands; Galapagos tortoise; Turtles
| Author | : Samuel Garman |
| Publisher | : |
| Total Pages | : 250 |
| Release | : 1917 |
| Genre | : Galapagos tortoise |
| ISBN | : |
This book describes the physical characteristics, behavior, life cycle, and habitats of Gal?apagos tortoises.
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| Total Pages | : |
| Release | : 1914 |
| Genre | : |
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