Aestivation
Aestivation

Author: Carlos Arturo Navas

Publisher: Springer Science & Business Media

Published: 2010-01-12

Total Pages: 273

ISBN-13: 3642024211

DOWNLOAD EBOOK

Numerous animal species live in environments characterized by a seasonal reduction in the availability of water, which often but not always occurs when temperatures are highest. For many such animals, survival during the toughest season requires spending long periods of time in a rather inactive state known as aestivation. But aestivation is much more than remaining inactive. Successful aestivation requires the selection of a proper microhabitat, variable degrees of metabolic arrest and responsiveness to external stimuli, the ability to sense the proper time of year for emergence, the preservation of inactive tissue, and much more. So, aestivation involves a complex collection of behaviors, ecological associations and physiological adjustments that vary across species in their type, magnitude and course. This book seeks to explore the phenomenon of aestivation from different perspectives and levels of organization, ranging from microhabitat selection to genetic control of physiological adjustments. It brings together authors from across the world working on different systematic groups, approaches, and questions, but who are all ultimately working to better understand the complex issue of aestivation.

Beast Companions
Beast Companions

Author: John Foster

Publisher: Indiana University Press

Published: 2024

Total Pages: 258

ISBN-13: 0253069416

DOWNLOAD EBOOK

Despite their fame and reputation, dinosaurs represent only half the story of the Mesozoic Era. In Beast Companions: The Unsung Animals of the Dinosaurs' World, paleontologist John Foster explores the often-overlooked animals that coexisted with them. These ancient species, often equally remarkable as their dinosaur neighbors, can provide valuable insights into the biotic history of our planet. In some cases, these animals reveal just as much, if not more, about the extinct ecosystems of the time as the dinosaurs themselves. By drawing on a wealth of current and past discoveries, Foster embarks on a sweeping journey across 164 million years to visit the beast companions of the dinosaurs. Along the way, he examines fish, insects, the first frogs and salamanders, turtles, snakes and lizards, marine reptiles, crocodiles, pterosaurs, birds, mammals, and other animals of the Mesozoic Era. Beast Companions is a groundbreaking exploration of the story of these contemporaries of the dinosaurs that set the modern world in motion more than 200 million years ago

Trace Fossils
Trace Fossils

Author: William Miller III

Publisher: Elsevier

Published: 2011-10-13

Total Pages: 637

ISBN-13: 0080475353

DOWNLOAD EBOOK

This book serves as an up-to-date introduction, as well as overview to modern trace fossil research and covers nearly all of the essential aspects of modern ichnology. Divided into three section, Trace Fossils covers the historical background and concepts of ichnology, on-going research problems, and indications about the possible future growth of the discipline and potential connections to other fields. This work is intended for a broad audience of geological and biological scientists. Workers new to the field could get a sense of the main concepts of ichnology and a clear idea of how trace fossil research is conducted. Scientists in related disciplines could find potential uses for trace fossils in their fields. And, established workers could use the book to check on the progress of their particular brand of ichnology. By design, there is something here for novice and veteran, insider and outsider, and for the biologically-oriented workers and for the sedimentary geologists.* Presents a review of the state of ichnology at the beginning of the 21st Century* Summarizes the basic concepts and methods of modern trace fossil research* Discusses crucial background information about the history of trace fossil research, the main concepts of ichnology, examples of current problems and future directions, and the potential connections to other disciplines within both biology and geology

Time
Time

Author: Briton Hadden

Publisher:

Published: 1987

Total Pages: 1304

ISBN-13:

DOWNLOAD EBOOK

The Random House Crossword Puzzle Dictionary
The Random House Crossword Puzzle Dictionary

Author: Random House

Publisher: Ballantine Books

Published: 1995-03-01

Total Pages: 1218

ISBN-13: 0804113491

DOWNLOAD EBOOK

THE RANDOM HOUSE CROSSWORD PUZZLE DICTIONARY MORE THAN 700,000 CLUES AND ANSWER WORDS! THE MOST COMPREHENSIVE POCKET CROSSWORD DICTIONARY ON THE MARKET! COMPREHENSIVE More clue words, special categories, and subcategories than any comparable dictionary In-depth coverage of people, places, and things AUTHORITATIVE Extensive coverage of modern history, popular culture, politics, literature, sports, and much more General vocabulary and synonyms checked against the voluminous Random House dictionary and thesaurus files CLEARLY ORGANIZED Clue words and clue information printed in easy-to-spot bold typeface All answer words grouped by their number of letters

Nature's Holism
Nature's Holism

Author: Laurence Evans

Publisher: iUniverse

Published: 1999-08

Total Pages: 526

ISBN-13: 1583482911

DOWNLOAD EBOOK

In the association of the bee and the flower is a very advanced reflection of the process of evolution through natural selection. Nature's Holism explores the coevolution of long associated species arriving at a holistic view of nature where the compatibility between species is significant. In nature there are two interacting forces. There is the numerical increase in numbers of a species, termed a force of "perpetuity". Increasing numbers of a single species have an inevitable impact on the environment. However, as each species survives within an ecological context, there is a feedback from the ecosystem as numbers increase, requiring a necessary compatibility with the ecosystem. "Fitness" is therefore defined, not only by quantitative representation of genes in the next generation (perpetuity), but also the qualitative condition of compatibility with the habitat or ecosystem that provided the conditions and resources for this success.