Based on three decades of field experience in southwest Asia, southern Africa, and the southwest United States, the author summarizes the major adaptations of plants to desert dunes. This integrative study of plant and diaspore morphology, reactive growth, life cycles, and environmental factors explains and predicts plant distribution. Many kinds of dune syndromes, plant case studies and vegetation transects are discussed and illustrated to clarify the significance of adaptations to specific habitat factors. Although the focus is on vascular plants, the development of microbiotic soil crust, its function, and its composition are discussed as well.
In this book, coastal dune specialists from tropical and temperate latitudes cover a wide set of topics, including: geomorphology, community dynamics, ecophysiology, biotic interactions and environmental problems and conservation. The book offers recommendations for future research, identifying relevant topics where detailed knowledge is still lacking. It also identifies management tools that will promote and maintain the rich diversity of the dune environments in the context of continuing coastal development.
'Ocean Shores to Desert Dunes' is an award-winning book that takes the reader on a journey through the landscapes of New South Wales and the Australian Capital Territory, describing the 12 broad formations - or types - of vegetation, and 99 vegetation classes. Each vegetation class is comprehensively described, including where each occurs and why, interesting aspects of its ecology, evolution, history and development, as well as current conservation and management challenges. This spectacularly illustrated book includes more than 100 maps and 400 colour photographs, species lists for each of the vegetation classes, and extensive botanical and general indexes. 'Ocean Shores to Desert Dunes' is the perfect companion to the many plant identification guides currently available, and is based on a significant new state-wide map and vegetation classification by the author.
During germination, the most resistant stage of the life cycle - the seed - changes to the most sensitive stage, namely the seedling. Therefore, in desert plant species seed dispersal and subsequent germination in the optimum time an place place are particularly critical parameters. Discussed here are the ways and means by which desert plants have adapted through the course of evolution to their extreme environment. Two such strategies which have evolved are a) plants with relatively large and protected seeds which germinate when the chance of seedling survival is high and the risk relatively low or b) those with an opportunistic strategy: minute seeds which germinate after low rainfall under high risk for seedling survival if additional rain does not follow. Most species adopt a combination of the two mechanisms. Species have adapted both genotypically and phenotypically, both aspects of which are also discussed in this thorough text. The reader is provided with a good understanding of the complex influences on each seed traced through from initial development to germination stage regarding germination preparation and subsequent survival.
From the Pinacate lava fields and expansive dunes to the shores of the Gulf of California, the Gran Desierto is one of the hottest and driest places in the Western Hemisphere. Yet this region in the state of Sonora in northwestern Mexico embraces a remarkable number of habitats with a fascinating and surprisingly rich flora. This is the heart of the Sonoran Desert, still in a largely primordial state, in juxtaposition with the ravished wetlands of the once great Río Colorado. Flora of the Gran Desierto is the culmination of more than twenty-five years of research in this magnificent desert and delta by botanist Richard Felger. This comprehensive floristic study of more than 565 species of vascular plants features original diagnostic descriptions and innovative identification keys to the families, genera, and species. Particular attention has been devoted to taxa that are poorly known. Even weeds and their histories are treated in detail. Hundreds of illustrations by such eminent botanical artists as Lucretia Brezeale Hamilton, Matt Johnson, and Bobbi Angell will aid in the identification of plants. Common names of plants are given in English, Spanish, and O'odham. While emphasizing scientific accuracy, the book is written in an accessible style. Felger's observations and knowledge of plant ecology, geographic distribution, evolution, ethnobotany, plant variation and special adaptations, and the history of the region provides botanists, naturalists, ecologists, conservationists, and anyone else celebrating the desert with readable, interesting, and important information. With two of Mexico's newest biosphere reserves—the Pinacate and the Upper Gulf of California—this region is a keystone for desert conservation efforts. Its location linking vast preserves to the north makes this book especially useful for anyone interested in borderland studies and the Sonoran Desert. Flora of the Gran Desierto represents a most creative, definitive, and enthusiastic treatment of Sonoran Desert plant life and is highly relevant to ecological restoration in deserts and wetlands in arid places worldwide.
In this refreshing collection, one of our best writers on desert places, Gary Paul Nabhan, challenges traditional notions of the desert. Beautiful, reflective, and at times humorous, Nabhan’s extended essay also called “The Nature of Desert Nature” reveals the complexity of what a desert is and can be. He passionately writes about what it is like to visit a desert and what living in a desert looks like when viewed through a new frame, turning age-old notions of the desert on their heads. Nabhan invites a prism of voices—friends, colleagues, and advisors from his more than four decades of study of deserts—to bring their own perspectives. Scientists, artists, desert contemplatives, poets, and writers bring the desert into view and investigate why these places compel us to walk through their sands and beneath their cacti and acacia. We observe the spines and spears, stings and songs of the desert anew. Unexpected. Surprising. Enchanting. Like the desert itself, each essay offers renewed vocabulary and thoughtful perceptions. The desert inspires wonder. Attending to history, culture, science, and spirit, The Nature of Desert Nature celebrates the bounty and the significance of desert places. Contributors Thomas M. Antonio Homero Aridjis James Aronson Tessa Bielecki Alberto Búrquez Montijo Francisco Cantú Douglas Christie Paul Dayton Alison Hawthorne Deming Father David Denny Exequiel Ezcurra Thomas Lowe Fleischner Jack Loeffler Ellen McMahon Rubén Martínez Curt Meine Alberto Mellado Moreno Paul Mirocha Gary Paul Nabhan Ray Perotti Larry Stevens Stephen Trimble Octaviana V. Trujillo Benjamin T. Wilder Andy Wilkinson Ofelia Zepeda
In this book, the authors present current research in the study of the conservation, types and desertification of sand dunes. Topics discussed include the aridisation, dune dissipation and pedogenesis in the Quarternary of Eastern Pampean sand sea; desert sand dunes for sulfur concrete production; Allocosa brasiliensis as a model towards the conservation of coastal sand dunes in Uruguay and the causes, impacts and control of desertification.
Nearly one-third of the land area on our planet is classified as arid or desert. Therefore, an understanding of the dynamics of such arid ecosystems is essential to managing those systems in a way that sustains human populations. This second edition of Ecology of Desert Systems provides a clear, extensive guide to the complex interactions involved in these areas. This book details the relationships between abiotic and biotic environments of desert ecosystems, demonstrating to readers how these interactions drive ecological processes. These include plant growth and animal reproductive success, the spatial and temporal distribution of vegetation and animals, and the influence of invasive species and anthropogenic climate change specific to arid systems. Drawing on the extensive experience of its expert authors, Ecology of Desert Systems is an essential guide to arid ecosystems for students looking for an overview of the field, researchers keen to learn how their work fits in to the overall picture, and those involved with environmental management of desert areas. - Highlights the complexity of global desert systems in a clear, concise way - Reviews the most current issues facing researchers in the field, including the spread of invasive species due to globalized trade, the impact of industrial mining, and climate change - Updated and extended to include information on invasive species management, industrial mining impacts, and the current and future role of climate change in desert systems
Based on four decades of research by Professor Andrew Goudie, this volume provides a state-of-the-art synthesis of our understanding of desert geomorphology. It presents a truly international perspective, with examples from all over the world. Extensively referenced and illustrated, it covers such topics as the importance of past climatic changes, the variability of different desert environments, rock breakdown, wind erosion and dust storm generation, sand dunes, fluvial and slope forms and processes, the role of the applied geomorphologist in desert development and conservation, and the Earth as an analogue for other planetary bodies. This book is destined to become the classic volume on arid and semi-arid geomorphology for advanced students and researchers in physical geography, geomorphology, Earth science, sedimentology, environmental science and archaeology.
