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To newly minted biologist James Estes, the sea otters he was studying in the leafy kelp forests off the coast of Alaska appeared to have an unbalanced relationship with their greater environment. Gorging themselves on the sea urchins that grazed among the kelp, these small charismatic mammals seemed to give little back in return. But as Estes dug deeper, he unearthed a far more complex relationship between the otter and its underwater environment, discovering that otters play a critical role in driving positive ecosystem dynamics. While teasing out the connective threads, he began to question our assumptions about ecological relationships. These questions would ultimately inspire a lifelong ...
Trophic cascades—the top-down regulation of ecosystems by predators—are an essential aspect of ecosystem function and well-being. Trophic cascades are often drastically disrupted by human interventions—for example, when wolves and cougars are removed, allowing deer and beaver to become destructive—yet have only recently begun to be considered in the development of conservation and management strategies. Trophic Cascades is the first comprehensive presentation of the science on this subject. It brings together some of the world’s leading scientists and researchers to explain the importance of large animals in regulating ecosystems, and to relate that scientific knowledge to practica...
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This book is the first contextual account of the political philosophy and natural law theory of the German reformer Philipp Melanchthon (1497-1560). Mads Langballe Jensen presents Melanchthon as a significant political thinker in his own right and an engaged scholar drawing on the intellectual arsenal of renaissance humanism to develop a new Protestant political philosophy. As such, he also shows how and why natural law theories first became integral to Protestant political thought in response to the political and religious conflicts of the Reformation. This study offers new, contextual studies of a wide range of Melanchthon's works including his early humanist orations, commentaries on Aristotle's ethics and politics, Melanchthon's own textbooks on moral and political philosophy, and polemical works.
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Think gunfighter, and Wyatt Earp or Billy the Kid may come to mind, but what of Jim Moon? Joel Fowler? Zack Light? A host of other figures helped forge the gunfighter persona, but their stories have been lost to time. In a sequel to his Deadly Dozen, celebrated western historian Robert K. DeArment now offers more biographical portraits of lesser-known gunfighters—men who perhaps weren’t glorified in legend or song, but who were rightfully notorious in their day. DeArment has tracked down stories of gunmen from throughout the West—characters you won’t find in any of today’s western history encyclopedias but whose careers are colorfully described here. Photos of the men and telling q...