Common Spiders of North America

Common Spiders of North America

Author: Richard A. Bradley

Publisher: University of California Press

Published: 2019-11-12

Total Pages: 284

ISBN-13: 0520315316

DOWNLOAD EBOOK

Spiders are among the most diverse groups of terrestrial invertebrates, yet they are among the least studied and understood. This first comprehensive guide to all 68 spider families in North America beautifully illustrates 469 of the most commonly encountered species. Group keys enable identification by web type and other observable details, and species descriptions include identification tips, typical habitat, geographic distribution, and behavioral notes. A concise illustrated introduction to spider biology and anatomy explains spider relationships. This book is a critical resource for curious naturalists who want to understand this ubiquitous and ecologically critical component of our biosphere.


Battle of the Butts

Battle of the Butts

Author: Jocelyn Rish

Publisher: Running Press Kids

Published: 2021-11-02

Total Pages: 51

ISBN-13: 0762497785

DOWNLOAD EBOOK

Did you know manatees swim using farts? Or that herrings communicate by passing gas? Butts are used for breathing, eating, swimming, talking, and even killing in the animal kingdom. Focusing on ten different animals and their derrières, and offering fun facts about their origin, habitat, and "posterior power," this hilarious book captures the wonder of our ecosystem. Which animal has the coolest butt power? That's up to you to decide! An MASL Dogwood Reader's Award Title Towner Award Winner 2024 Texas Topaz Nonfiction Reading List Selection


Invasive Species in Forests and Rangelands of the United States

Invasive Species in Forests and Rangelands of the United States

Author: Therese M. Poland

Publisher: Springer Nature

Published: 2021-02-01

Total Pages: 455

ISBN-13: 3030453677

DOWNLOAD EBOOK

This open access book describes the serious threat of invasive species to native ecosystems. Invasive species have caused and will continue to cause enormous ecological and economic damage with ever increasing world trade. This multi-disciplinary book, written by over 100 national experts, presents the latest research on a wide range of natural science and social science fields that explore the ecology, impacts, and practical tools for management of invasive species. It covers species of all taxonomic groups from insects and pathogens, to plants, vertebrates, and aquatic organisms that impact a diversity of habitats in forests, rangelands and grasslands of the United States. It is well-illustrated, provides summaries of the most important invasive species and issues impacting all regions of the country, and includes a comprehensive primary reference list for each topic. This scientific synthesis provides the cultural, economic, scientific and social context for addressing environmental challenges posed by invasive species and will be a valuable resource for scholars, policy makers, natural resource managers and practitioners.


Principles of Animal Locomotion

Principles of Animal Locomotion

Author: R. McNeill Alexander

Publisher: Princeton University Press

Published: 2006-03-19

Total Pages: 384

ISBN-13: 0691126348

DOWNLOAD EBOOK

How can geckoes walk on the ceiling and basilisk lizards run over water? What are the aerodynamic effects that enable small insects to fly? What are the relative merits of squids' jet-propelled swimming and fishes' tail-powered swimming? Why do horses change gait as they increase speed? What determines our own vertical leap? Recent technical advances have greatly increased researchers' ability to answer these questions with certainty and in detail. This text provides an up-to-date overview of how animals run, walk, jump, crawl, swim, soar, hover, and fly. Excluding only the tiny creatures that use cilia, it covers all animals that power their movements with muscle--from roundworms to whales, clams to elephants, and gnats to albatrosses. The introduction sets out the general rules governing all modes of animal locomotion and considers the performance criteria--such as speed, endurance, and economy--that have shaped their selection. It introduces energetics and optimality as basic principles. The text then tackles each of the major modes by which animals move on land, in water, and through air. It explains the mechanisms involved and the physical and biological forces shaping those mechanisms, paying particular attention to energy costs. Focusing on general principles but extensively discussing a wide variety of individual cases, this is a superb synthesis of current knowledge about animal locomotion. It will be enormously useful to advanced undergraduates, graduate students, and a range of professional biologists, physicists, and engineers.


Our Animal Friends in Their Native Homes

Our Animal Friends in Their Native Homes

Author: Phebe Westcott Humphreys

Publisher: BoD – Books on Demand

Published: 2020-08-03

Total Pages: 382

ISBN-13: 3752401427

DOWNLOAD EBOOK

Reproduction of the original: Our Animal Friends in Their Native Homes by Phebe Westcott Humphreys


Extinct Animals

Extinct Animals

Author: Ross Piper

Publisher: Bloomsbury Publishing USA

Published: 2009-03-20

Total Pages: 228

ISBN-13: 0313349886

DOWNLOAD EBOOK

Everyone is familiar with the dodo and the wooly mammoth, but how many people have heard of the scimitar cat and the Falkland Island fox? Extinct Animals portrays over 60 remarkable animals that have been lost forever during the relatively recent geological past. Each entry provides a concise discussion of the history of the animal—how and where it lived, and how it became extinct—as well as the scientific discovery and analysis of the creature. In addition, this work examines what led to extinction—from the role of cyclical swings in the Earth's climate to the spread of humans and their activities. Many scientists believe that we are in the middle of a mass extinction right now, caused by the human undermining of the earth's complex systems that support life. Understanding what caused the extinction of animals in the past may help us understand and prevent the extinction of species in the future. Extinct Animals examines the biology and history of some of the most interesting creatures that have ever lived, including: The American Terror Bird, which probably became extinct over 1 million years ago, who were massive predators, some of which were almost 10 feet tall; the Rocky Mountain Locust, last seen in 1902, formed the most immense animal aggregations ever known, with swarms estimated to include over 10 trillion insects; the Giant Ground Sloth, which was as large as an elephant; and the Neandertals, the first Europeans, which co-existed with prehistoric Homo sapiens. Extinct Animals includes illustrations—many created for the work—that help the reader visualize the extinct creature, and each entry concludes with a list of resources for those who wish to do further research.


Wild Animals of North America

Wild Animals of North America

Author: Edward William Nelson

Publisher: DigiCat

Published: 2022-08-15

Total Pages: 319

ISBN-13:

DOWNLOAD EBOOK

DigiCat Publishing presents to you this special edition of "Wild Animals of North America" (Intimate Studies of Big and Little Creatures of the Mammal Kingdom) by Edward William Nelson. DigiCat Publishing considers every written word to be a legacy of humankind. Every DigiCat book has been carefully reproduced for republishing in a new modern format. The books are available in print, as well as ebooks. DigiCat hopes you will treat this work with the acknowledgment and passion it deserves as a classic of world literature.