Gould, C: Nature’s Compass
Beschreibung:
The Goulds discuss how animals navigate, without instruments and training, at a level far beyond human talents. They explain how animals measure time and show how the fragile monarch butterfly employs an internal clock, calendar, compass, and map to commence and measure the two-thousand-mile annual journey to Mexico--all with a brain that weighs only a few thousandths of an ounce. They look at honey bees and how they rely on the sun and mental maps to locate landmarks such as nests and flowers. And they examine whether long-distance migrants, such as the homing pigeon, depend on a global positioning system to let them know where they are. Ultimately, the authors ask if the disruption of migratory paths through habitat destruction and global warming is affecting and endangering animal species.
Preface ix Acknowledgments xiii 1 Navigating Problems and Strategies 1 2 When and Where 19 3 A Matter of Time 35 4 Insect Compasses 69 5 Vertebrate Compasses 117 6 Piloting and Inertial Navigation 155 7 The Map Sense 185 8 Migration and the Future: Conservation and Extinction 227 Bibliography 245 Illustration Credits 281 Index 289
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