Margaret D. Lowman

An indispensable illustrated source of information for hundreds of species of North American trees This authoritative reference on native and non-native trees of North America, by Smithsonian veteran W. John Kress, provides an unprecedented appraisal of more than 325 common species. More than a field guide, it includes ? over 300 range maps and 3,000 photographs of leaves, flowers, fruits, seeds, and bark; ? an in-depth introduction to the biology of trees, their value, structure, evolution, classification, ecology, and conservation; ? descriptions of each species, organized by genus and family; ? a reflection on the consequences of environmental change on the health of trees, now and in the future; ? a presentation, based on the latest technologies, of North American trees in a planetary and evolutionary perspective. Smithsonian Trees of North America, ten years in the making, marries science and art to provide an insightful and compassionate exploration of the diversity, structure, form, and beauty of trees.

Poised between soil and sky, forest canopies represent a critical point of exchange between the atmosphere and the earth, yet until recently, they remained a largely unexplored frontier. For a long time, problems with access and the lack of tools and methods suitable for monitoring these complex bioscapes made canopy analysis extremely difficult. Fortunately, canopy research has advanced dramatically in recent decades. "Methods in Forest Canopy Research" is a comprehensive overview of these developments for explorers of this astonishing environment. The authors describe methods for reaching the canopy and the best ways to measure how the canopy, atmosphere, and forest floor interact. They address how to replicate experiments in challenging environments and lay the groundwork for creating standardized measurements in the canopy - essential tools for understanding our changing world.

The treetops of the world's forests are where discovery and opportunity abound, however they have been relatively inaccessible until recently. This book represents an authoritative synthesis of data, anecdotes, case studies, observations, and recommendations from researchers and educators who have risked life and limb in their advocacy of the High Frontier. With innovative rope techniques, cranes, walkways, dirigibles, and towers, they finally gained access to the rich biodiversity that lives far above the forest floor and the emerging science of canopy ecology. In this new edition of Forest Canopies, nearly 60 scientists and educators from around the world look at the biodiversity, ecology, evolution, and conservation of forest canopy ecosystems.