Subterranean mammals

As with terrestrial small mammals, subterranean mammals are cryptic, but unlike terrestrial small mammals they are usually difficult to capture alive. Commercial killing traps can be obtained and modified to capture most species. Evidence of digging activity can be used to indicate a species' presence, but these signs of activity are not often correlated with density and are a poor index. Some subterranean mammals have a portion of the year, or day, that they spend aboveground and this is the period during which they are most easily captured and surveyed. Direct observations and radio telemetry are ineffective because the soil blocks both sight and radio signal transmission.

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Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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