David R. Foster – författare

Agrarian Landscapes in Transition researches human interaction with the earth. With hundreds of acres of agricultural land going out of production every day, the introduction, spread, and abandonment of agriculture represents the most pervasive alteration of the Earth's environment for several thousand years. What happens when humans impose their spatial and temporal signatures on ecological regimes, and how does this manipulation affect the earth and nature's desire for equilibrium? Studies were conducted at six Long Term Ecological Research sites within the US, including New England, the Appalachian Mountains, Colorado, Michigan, Kansas, and Arizona. While each site has its own unique agricultural history, patterns emerge that help make sense of how our actions have affected the earth, and how the earth pushes back. The book addresses how human activities influence the spatial and temporal structures of agrarian landscapes, and how this varies over time and across biogeographic regions. It also looks at the ecological and environmental consequences of the resulting structural changes, the human responses to these changes, and how these responses drive further changes in agrarian landscapes. The time frames studied include the ecology of the earth before human interaction, pre-European human interaction during the rise and fall of agricultural land use, and finally the biological and cultural response to the abandonment of farming, due to complete abandonment or a land-use change such as urbanization.

This highly topical study of tropical deforestation in Mexico reports on the first phase of the Land-Cover and Land-Use Change in the Southern Yucatan Peninsular Region Project (LCLUC-SYPR): a large, multi-institutional, and team-based study designed to understand and project land changes in a development frontier that pits the rapidly growing needs of smallholder farmers to cut down forests for cultivation against federally sponsored initiatives committed to various international programmes of forest preservation and complementary economic programmes.The SYPR project is a response to inderdisciplinary defined research themes deemed critical to global environmental change and complementary international research agendas (e.g. environment and development, ecosystem assessment, biotic diversity). Pivotal among these agendas are those posed by the Land-Use/Cover Change (LUCC) effort of the International Geosphere-Biosphere Programme and the International Human Dimensions of Global Environmental Change Programme as it is linked through such US sponsors as the National Aeronautics and Space Administration (NASA) and the National Science Foundation (NSF). The themes (i.e. questions and subjects) posed by these programmes and organization are 'integrated' or 'synthesis' in kind, meaning that they rest within the intersection of formal disciplines and are intended to fit into a larger, systems framework about human-environment relationships and the structure and function of the biosphere.The editors of this volume, as most of its contributors, come from the disciplines of geography, ecology, and economics. The lead editor, the geographer B. L. Turner II, has spent most of his career in pursuit of understanding different aspects of tropical deforestation and agriculture.

The Eastern Hemlock, massive and majestic, has played a unique role in structuring northeastern forest environments, from Nova Scotia to Wisconsin and through the Appalachian Mountains to North Carolina, Tennessee, and Alabama. A “foundation species” influencing all the species in the ecosystem surrounding it, this iconic North American tree has long inspired poets and artists as well as naturalists and scientists.Five thousand years ago, the hemlock collapsed as a result of abrupt global climate change.  Now this iconic tree faces extinction once again because of an invasive insect, the hemlock woolly adelgid. Drawing from a century of studies at Harvard University’s Harvard Forest, one of the most well-regarded long-term ecological research programs in North America, the authors explore what hemlock’s modern decline can tell us about the challenges facing nature and society in an era of habitat changes and fragmentation, as well as global change.

Over the past three hundred years New England's landscape has been transformed. The forests were cleared; the land was farmed intensively through the mid-nineteenth century and then was allowed to reforest naturally as agriculture shifted west. Today, in many ways the region is more natural than at any time since the American Revolution. This fascinating natural history is essential background for anyone interested in New England's ecology, wildlife, or landscape. In New England Forests through Time these historical and environmental lessons are told through the world-renowned dioramas in Harvard's Fisher Museum. These remarkable models have introduced New England's landscape to countless visitors and have appeared in many ecology, forestry, and natural history texts. This first book based on the dioramas conveys the phenomenal history of the land, the beauty of the models, and new insights into nature.

In 1977 David Foster took to the woods of New England to build a cabin with his own hands. Along with a few tools he brought a copy of the journals of Henry David Thoreau. Foster was struck by how different the forested landscape around him was from the one Thoreau described more than a century earlier. The sights and sounds that Thoreau experienced on his daily walks through nineteenth-century Concord were those of rolling farmland, small woodlands, and farmers endlessly working the land. As Foster explored the New England landscape, he discovered ancient ruins of cellar holes, stone walls, and abandoned cartways--all remnants of this earlier land now largely covered by forest. How had Thoreau's open countryside, shaped by ax and plough, divided by fences and laneways, become a forested landscape?Part ecological and historical puzzle, this book brings a vanished countryside to life in all its dimensions, human and natural, offering a rich record of human imprint upon the land. Extensive excerpts from the journals show us, through the vividly recorded details of daily life, a Thoreau intimately acquainted with the ways in which he and his neighbors were changing and remaking the New England landscape. Foster adds the perspective of a modern forest ecologist and landscape historian, using the journals to trace themes of historical and social change.Thoreau's journals evoke not a wilderness retreat but the emotions and natural history that come from an old and humanized landscape. It is with a new understanding of the human role in shaping that landscape, Foster argues, that we can best prepare ourselves to appreciate and conserve it today.From the journal:"I have collected and split up now quite a pile of driftwood--rails and riders and stems and stumps of trees--perhaps half or three quarters of a tree...Each stick I deal with has a history, and I read it as I am handling it, and, last of all, I remember my adventures in getting it, while it is burning in the winter evening. That is the most interesting part of its history. It has made part of a fence or a bridge, perchance, or has been rooted out of a clearing and bears the marks of fire on it...Thus one half of the value of my wood is enjoyed before it is housed, and the other half is equal to the whole value of an equal quantity of the wood which I buy."--October 20, 1855