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Advances in our understanding of the nitrogen cycle and the impact of anthropogenic activities on regional to global scales depend on the expansion of scientific studies to these fast-developing regions. This book presents a series of studies from across the Americas whose aim is to highlight key natural processes that control nitrogen cycling as well as discuss the main anthropogenic influences on the nitrogen cycle in both the tropical and temperate regions of the Americas.

"The primary aim of this book is to give its readers an idea of the places Thoreau describes in his own books. The importance of those places will depend upon the readers' critical views of Thoreau. To those who read him literally, the maps will provide a convenient way of following his travels in Massachusetts, Maine, Canada, Cape Cod, Minnesota--locations that he actually visited in his life. To those who read him figuratively, the maps will depict symbolic rivers, ponds, mountains--settings that are the imaginative products of his art."--From the Introduction to A Thoreau...

"The primary aim of this book is to give its readers an idea of the places Thoreau describes in his own books. The importance of those places will depend upon the readers' critical views of Thoreau. To those who read him literally, the maps will provide a convenient way of following his travels in Massachusetts, Maine, Canada, Cape Cod, Minnesota--locations that he actually visited in his life. To those who read him figuratively, the maps will depict symbolic rivers, ponds, mountains--settings that are the imaginative products of his art."--From the Introduction to A Thoreau...

Dieses Okologie-Lehrbuch fuhrt in leicht verstandlicher Weise in die Grundlagen von den theoretischen Fundamenten bis zu Ihren praktischen Anwendungen - ein. Durchgehend farbige Abbildungen, einfache didaktische Elemente und eine Fulle an Beispielen machen dieses Buch zu einem idealen Einstieg in die Okologie fur Studierende aller Studienabschnitte.

Neu in der 3. Auflage sind zusatzliche Erlauterungen in Form von Sprechblasen in den Abbildungen und die neue Gliederung des Textes in 5 Abschnitte. Okosystem und Biogeochemie werden ausfuhrlicher behandelt und hunderte neuer...