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Books > Earth & environment > Geography > Physical geography > Forests, rainforests
Global change threatens ecosystems worldwide, and tropical systems with their high diversity and rapid development are of special concern. We can mitigate the impacts of change if we understand how tropical ecosystems respond to disturbance. For tropical forests and streams in Puerto Rico this book describes the impacts of, and recovery from, hurricanes, landslides, floods, droughts, and human disturbances in the Luquillo Mountains of Puerto Rico. These ecosystems recover quickly after natural disturbances, having been shaped over thousands of years by such events. Human disturbance, however, has longer-lasting impacts. Chapters are by authors with many years of experience in Puerto Rico and other tropical areas and cover the history of research in these mountains, a framework for understanding disturbance and response, the environmental setting, the disturbance regime, response to disturbance, biotic mechanisms of response, management implications, and future directions. The text provides a strong perspective on tropical ecosystem dynamics over multiple scales of time and space.
A one-of-a-kind introduction to the major issues and controversies dominating the heated debate over U.S. forest policy today. Forest Conservation Policy: A Reference Handbook chronicles the dramatic history, current status, and global influence of U.S. forest policy. Beginning with the foundations of early forest law during the colonial period through the rise of the Conservation Movement in the wake of 19th century massive forest exploitation, this reference also discusses the environmental challenges that have rewritten recent U.S. forest policy and explores future policy directions. What are the effects of forest destruction on biological diversity? Has the sustainable forest management movement been effective? Given the fact that individual landowners control the greatest share of U.S. forestland, how are forests on private lands regulated? Students and concerned citizens alike will discover answers to these and other critical questions regarding what is left of the nation's dwindling forests. Subject-indexed description of the major issues dominating the current debates over the future of forest policy Exhaustive references to government and nongovernment forestry organizations at both the national and regional levels
The Red Hills region of south Georgia and north Florida contains one of the most biologically diverse ecosystems in North America, with longleaf pine trees that are up to four hundred years old and an understory of unparalleled plant life. At first glance, the longleaf woodlands at plantations like Greenwood, outside Thomasville, Georgia, seem undisturbed by market economics and human activity, but Albert G. Way contends that this environment was socially produced and that its story adds nuance to the broader narrative of American conservation. The Red Hills woodlands were thought of primarily as a healthful refuge for northern industrialists in the early twentieth century. When notable wildlife biologist Herbert Stoddard arrived in 1924, he began to recognize the area's ecological value. Stoddard was with the federal government, but he drew on local knowledge to craft his land management practices, to the point where a distinctly southern, agrarian form of ecological conservation emerged. This set of practices was in many respects progressive, particularly in its approach to fire management and species diversity, and much of it remains in effect today. Using Stoddard as a window into this unique conservation landscape, "Conserving Southern Longleaf" positions the Red Hills as a valuable center for research into and understanding of wildlife biology, fire ecology, and the environmental appreciation of a region once dubbed simply the "pine barrens."
Even before the myth of Prometheus, fire played a crucial ecological role around the world. Numerous plant communities depend on fire to generate species diversity in both time and space. Without fire such ecosystems would become sterile monocultures. Recent efforts to prohibit fire in fire dependent communities have contributed to more intense and more damaging fires. For these reasons, foresters, ecologists, land managers, geographers, and environmental scientists are interested in the behavior and ecological effects of fires. This book will be the first to focus on the chemistry and physics of fire as it relates to the ways in which fire behaves and the impacts it has on ecosystem function. Leading international contributors have been recruited by the editors to prepare a didactic text/reference that will appeal to both advanced students and practicing professionals.
This book systematically discusses the vegetation dynamics in northern China since the LGM, with a focus on three dominant tree species (Pinus, Quercus and Betula). By integrating methods of palaeoecology, phylogeography and species distribution model, it reconstructs the glacial refugia in northern China, demonstrating that the species were located further north than previously assumed during the LGM. The postglacial dynamics of forest distribution included not only long-distance north-south migration but also local spread from LGM micro-refugia in northern China. On the regional scale, the book shows the altitudinal migration pattern of the three dominant tree genera and the role of topographical factors in the migration of the forest-steppe border. On the catchment scale, it analyzes Huangqihai Lake, located in the forest-steppe ecotone in northern China, to indentify the local forest dynamics response to the Holocene climatic change. It shows that local forests have various modes of response to the climate drying, including shrubland expansion, savannification and replacement of steppe. In brief, these studies at different space-time scales illustrate the effects of climate, topography and other factors on forest migration.
Wood was essential to the survival of the Venetian Republic. To build its great naval and merchant ships, maintain its extensive levee system, construct buildings, fuel industries, and heat homes, Venice needed access to large quantities of oak and beech timber. The island city itself was devoid of any forests, so the state turned to its mainland holdings for this vital resource. "A Forest on the Sea" explores the history of this enterprise and Venice's efforts to extend state control over its natural resources. Karl Appuhn explains how Venice went from an isolated city completely dependent on foreign suppliers for wood to a regional state with a sophisticated system of administering and preserving forests. Intent on conserving this invaluable resource, Venice employed specialized experts to manage its forests. The state bureaucracy supervised this work, developing a philosophy about the environment--namely, a mutual dependence between humans and the natural world--that was far ahead of its time. Its efforts kept many large forest preserves under state protection, some of which still stand today. "A Forest on the Sea" offers a completely novel perspective on how Renaissance Europeans thought about the natural world. It sheds new light on how cultural conceptions about nature influenced political policies for resource conservation and land management in Venice.
The extraordinary story of Israel's forests, from ancient times to the present. In this insightful and provocative book, Alon Tal provides a detailed account of Israeli forests, tracing their history from the Bible to the present, and outlines the effort to transform drylands and degraded soils into prosperous parks, rangelands, and ecosystems. Tal's description of Israel's trials and errors, and his exploration of both the environmental history and the current policy dilemmas surrounding that country's forests, will provide valuable lessons in the years to come for other parts of the world seeking to reestablish timberlands.
An entertaining and enthralling collection of myths, tales and traditions surrounding our trees, woodlands and forests from around the world.From the dark, gnarled woodlands of the north, to the humid jungles of the southern lands, trees have captured humanity's imagination for millennia. Filled with primal gods and goddesses, dryads and the fairy tales of old, the forests still beckon to us, offering sanctuary, mystery and more than a little mischievous trickery. From insatiable cannibalistic children hewn from logs, to lumberjack lore, and the spine-chilling legend of Bloody Mary, there is much to be found between the branches. Come into the trees; witches, seductive spirits and big, bad wolves await you.With this book, Folklore Thursday aim to encourage a sense of belonging across all cultures by showing how much we all have in common.
From the New York Times-bestselling author of The Hidden Life of Trees, this guide to awakening your senses and engaging deeply with the forest is the perfect gift for hikers and walkers. "This book will fast-track you into the joys of spending time amongst the trees."--Tristan Gooley, author of The Lost Art of Reading Nature's Signs and How to Read Water You'll be changed after reading this fine and enchanting book."--Richard Louv, author of Our Wild Calling and Last Child in the Woods When you walk in the woods, do you use all five senses to explore your surroundings? For most of us, the answer is no--but when we do, a walk in the woods can go from pleasant to immersive and restorative. Forest Walking teaches you how to engage with the forest by decoding nature's signs and awakening to the ancient past and thrilling present of the ecosystem around you. What can you learn by following the spread of a root, by tasting the tip of a branch, by searching out that bitter almond smell? What creatures can be found in a stream if you turn over a rock--and what is the best way to cross a forest stream, anyway? How can you understand a forest's history by the feel of the path underfoot, the scars on the trees along the trail, or the play of sunlight through the branches? How can we safely explore the forest at night? What activities can we use to engage children with the forest? Throughout Forest Walking, the authors share experiences and observations from visiting forests across North America: from the rainforests and redwoods of the west coast to the towering white pines of the east, and down to the cypress swamps of the south and up to the boreal forests of the north. With Forest Walking, German forester Peter Wohlleben teams up with his longtime editor, Jane Billinghurst, as the two write their first book together, and the result is nothing short of spectacular. Together, they will teach you how to listen to what the forest is saying, no matter where you live or which trees you plan to visit next.
Gale explains why international negotiations have not produced a sustainable solution to tropical rainforest degradation. Using an innovative, critical approach to international regimes, the author analyzes the structure and operation of the International Tropical Timber Organization (ITTO). He shows how the timber industry and producing- and consuming-country governments created a blocking alliance that favoured developmentalist interests and ideas. The ITTO bolstered this alliance by permitting environmentalists merely to voice, but not to negotiate, their concerns.
This book explores the relationship between the land use choices of small-scale farmers and the rate of deforestation in the Brazilian Amazon. Although sustainable agriculture was introduced to the Amazon area about 10 years ago, it has been adopted by only a few farmers. Jill L. Caviglia analyses why this practice has not been more widely adopted and offers policy prescriptions to address this. The major source of deforestation in the Amazon is the use of slash-and-burn agriculture by small-scale farmers. The adoption of sustainable agriculture by these farmers could reduce the rate of deforestation dramatically. The author uses new, original case studies of farms in the area to estimate the probability of the adoption of sustainable agriculture and, once the adoption decision has been made, the intensity of adoption. The author finds that this is influenced greatly by farmer organizations and by providing the farmers with the knowledge that sustainable agriculture is a viable alternative to slash-and-burn practices. This book will be of great interest to scholars and policymakers in the areas of environmental economics, environmental policy and Latin American studies.
Forests are restless. When a tree dies or a new one sprouts, the forest that includes it shifts. When new trees sprout in the same direction, the whole forest begins to migrate, sometimes at astonishing rates. Today, however, an array of obstacles-humans felling trees by the billions, invasive pests transported through global trade-threaten to overwhelm these vital movements. Worst of all, the climate is changing faster than ever before and forests are struggling to keep up. A deft blend of science reporting and travel writing, The Journeys of Trees explores the evolving movements of forests by focusing on five trees: giant sequoia, ash, black spruce, Florida torreya and Monterey pine. Zach St George visits these trees in forests across continents, finding sequoias losing their needles in California, fossil records showing the paths of ancient forests in Alaska, domesticated pines in New Zealand and new sprouts of blight-resistant American chestnuts in New Hampshire. Everywhere he goes, St George meets lively people on conservation's front lines, from an ecologist studying droughts to an evolutionary evangelist with plans to save a dying species. He treks through the woods with activists, biologists and foresters, each with their own role to play in the fight for the uncertain future of our environment. An eye-opening investigation into forest migration past and present, The Journeys of Trees examines how we can all help our trees, and our planet, survive and thrive.
not only for land use systems that depend on the regular supply of rain or irrigation water but also for the future development of natural rainforests as drought stress has been shown to a?ect tree growth and species composition in old-growth forests (Wright 1991, Walsh and Newbery 1999, Engelbrecht et al. 2007). A drought experiment conducted in a cacao agroforestry plantation showed that this plantation was surprisingly resilient to an induced drought of more than a year (Schwendenmann et al. 2009). However, droughts can have a strong impact on household incomes from agriculture, they strongly a?ect the vulnerability to poverty and thus have to be analyzed as important exogenous shocks to households, forcing them to adjust their behaviour and develop strategies to cope with these problems. The stability of rainforest margins is a critical factor in the protection of tropical rainforests (Tscharntke et al. 2007). At present, however, rainf- est margins in many parts of the tropics are far from stable, both in soc- economic and in ecological terms. For example, protected areas may attract, rather than repel, human settlement, which may be due to international donor investment in national conservation programs (Wittemeyer et al. 2008). An alternative hypothesis is that protected areas might be compromised if leakage takes place, that is, if impacts that would take place inside the restricted area are displaced to a nearby, undisturbed area (Ewers and Rodrigues 2008).
The alpine treeline ecotone (ATE) is an area of transition high on
mountains where closed canopy forests from lower elevations give
way to the open alpine tundra and rocky expanses above. Alpine
tundra is an island biome and its ecotone with forest is subject to
change, and like oceanic islands, alpine tundra is subject to
invasion or the upward advance of treeline. The invasion of tundra
by trees will have consequences for the tundra biome as invasion
does for other island flora and fauna. To examine the invasibility
of tundra we take a plant s-eye-view, wherein the local conditions
become extremely important. Among these local conditions, we find
geomorphology to be exceptionally important. We concentrate on
aspects of microtopography (and microgeomorphology) and
microclimate because these are the factors that matter: from the
plant s-eye-view, but we pay attention to multiple scales. At
coarse scales, snow avalanches and debris flows are widespread and
create disturbance treelines whose elevation is well below those
controlled by climate. At medium scales, turf-banked terraces
create tread-and-riser topography that is a difficult landscape for
a tree seedling to survive upon because of exposure to wind,
dryness, and impenetrable surfaces. At fine scales, turf
exfoliation of the fronts of turf-banked risers, and boulders,
offer microsites where tree seedlings may find shelter and are able
to gain a foothold in the alpine tundra; conversely, however,
surfaces of needle-ice pans and frost heaving associated with
miniature patterned ground production are associated with sites
inimical to seedling establishment or survival. We explicitly
consider how local scale processes propagate across scales into
landscape patterns.
The mystique of the rainforest has captured the imaginations of generations of young people, explorers, authors, and biologists. It is a delicate ecosystem whose myriad sounds and smells, whose vibrancy of life, is balanced by constant cycles of death and decay. It is a place of fierce competition where unusual partnerships are forged and creative survival strategies are the norm. In this book, you will meet the scientific pioneers who first attempted to quantify and understand the vast diversity of these tropical forests, as well as their successors, who utilize modern tools and technologies to dissect the chemical nature of rainforest interactions. This book provides a general background on biodiversity and the study of chemical ecology before moving into specific chemical examples of insect defenses and microbial communication. It finishes with first-hand accounts of the trials and tribulations of a canopy biology pioneer and a rainforest research novice, while assessing the state of modern tropical research, its importance to humanity, and the ecological, political, and ethical issues that need to be tackled in order to move the field forward.
This book provides a solid scientific basis for researchers, practitioners and students interested in the application of genetic principles to tropical forest ecology and management. It presents a concise overview of genetic variation, evolutionary processes and the human impact on forest genetic resources in the tropics. In addition, modern tools to assess genetic diversity patterns and the dynamics of genetic structures are introduced to the non-specialist reader.
Tropical rainforests are disappearing at an alarming rate, causing unprecedented losses in biodiversity and ecosystem services. This book contributes to an improved understanding of the processes that have destabilizing effects on ecological and socio-economic systems of tropical rain forest margins, as well as striving to integrate environmental, technological and socio-economic issues in their solution.
Fire Ecology of Tropical Ecosystems gives an extensive explanation of historic and current fire situations in the tropics, describing the fire ecology of tropical ecosystems from around the globe. Eighteen groups of leading researchers explain the many different aspects and roles of fire in tropical ecosystems. Regional chapters address a set of common subjects including the causes of fire, typical fire behavior, and elements of the fire regime. In addition, they study the impacts of human land use, landscape fragmentation and climate change on the fire environment and the challenges of fire management in these ecosystems. The common set of topics provides consistency among the chapters and facilitates comprehensive understanding of fire s place in tropical ecology. This cohesive book covers unique aspects of fire in each ecosystem and includes a discussion of common elements to enable comparisons and syntheses of fire effects in disparate tropical ecosystems. Current scientific literature is too fragmented: it hampers the understanding of tropical fire ecology and degrades all global studies of land cover change and global carbon emissions. Fire Ecology of Tropical Ecosystems fills a large void in our current understanding of how fire affects terrestrial biota. The book opens with a general explanation of fire in the tropics, giving the examples of Oazaca, Mexico in 1998 and Roraima, Brazil in 1997-1998. It follows with the concepts and principles of wildland fire, including heat transfer, fire behavior, fuels, weather and climate. Chapters 3-19 cover the implications of fire in Asia, Africa, Australia, Central and South America, Pacifica and Pantropical, addressing the causes, fire behavior, severity, fire and land use, fire and landscapes (fragmentation and connectivity), fire, climate and climate change, fire regimes (why frequency matters), issues for fire management and regional issues of specific importance or interest. An overview at the end of the book considers the global fire regime conditions, threats, and opportunities for fire management in the tropics."
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.
This international rigorously peer-reviewed volume critically synthesizes current knowledge in forest hydrology and biogeochemistry. It is a one-stop comprehensive reference tool for researchers and practitioners in the fields of hydrology, biogeoscience, ecology, forestry, boundary-layer meteorology, and geography. Following an introductory chapter tracing the historical roots of the subject, the book is divided into the following main sections: . Sampling and Novel Approaches . Forest Hydrology and Biogeochemistry by Ecoregion and Forest Type . Hydrologic and Biogeochemical Fluxes from the Canopy to the Phreatic Surface . Hydrologic and Biogeochemical Fluxes in Forest Ecosystems: Effects of Time, Stressors, and Humans The volume concludes with a final chapter that reflects on the current state of knowledge and identifies some areas in need of further research. "
Plant geographical description of the area, syntaxonomy, spatial patterns, floristic richness, structure of plant communities in relation to soil properties and herbivore influence were described for a mountain region that is difficult to access. Seasonal, inter-annual, and long-term dynamics of vegetation are discussed on the base of long-term observations as well as pollen and phytolith analyses. Population biology of alpine plants is studied by combination of field observations and mathematical modelling. Plant population strategies and soil seed banks are described for alpine plants from several communities. Results of long-term ecological experiments (plant reciprocal transplantations, dominant removals, light limitation) showed the significance of competition and facilitation for community organization. Structure of soil algal and fungal communities is represented as well as mycorrhiza of alpine plants. Main animal groups (wild) history and modern nature conservation problems are discussed. |
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