"The theme of this book is the distribution of the abundance of organisms in space and time. Its core lies in how local births and deaths are tied to emigration and immigration processes, and how environmental variability at different scales affects population dynamics with stochastic processes and spatial structure. The book shows how elementary analytical tools can be used to understand population fluctuations, synchrony, processes un ..."
"Emphasizing the philosophy of uncertainty and the frailties of human psychology when people are confronted with risky situations, this book describes how to conduct a thorough environmental risk assessment. Technical methods are provided to help make assessments more objective and less prone to the biases of those involved in the assessment. Consideration is given to the way in which both subjective beliefs and technical analysis may b ..."
"The global spread of plant species by humans is both a fascinating large scale experiment and, in many cases, a major perturbation to native plant communities. Many of the most destructive weeds today have been intentionally introduced to new environments where they have had unexpected and detrimental impacts. This 2003 book considers the problem of invasive introduced plants from historical, ecological and sociological perspectives. We ..."
"This book focuses on introduced plant species: their origins and impacts on native vegetation and ecosystems as well as the potential for their control. Aimed at advanced students and land managers concerned with plant community conservation, it includes practical explanations, case studies and an introduction to basic techniques for evaluating the impacts of invasive plants."
"Although soil provides physical support for plants and contributes to a variety of important environmental functions, many questions about the ecological significance of its biological diversity, and how ecosystem function is affected, have never been asked. Recent technical developments, as well as new experimental and modelling approaches, have led to a renaissance in soil biodiversity research. The key areas are reflected in this new ..."
"Soil has generally been regarded as something of a 'black box' by ecologists. The importance of soil is obvious: it provides physical support for plants, and both the living and non-living components contribute to a variety of important environmental functions. Soil is a species-rich habitat, but many questions about the ecological significance of the soil's biological diversity, and in particular how it affects ecosystem function, have ..."
"Communities of microscopic plant life, or phytoplankton, dominate the Earth's aquatic ecosystems. This important new book by Colin Reynolds covers the adaptations, physiology and population dynamics of phytoplankton communities in lakes and rivers and oceans. It provides basic information on composition, morphology and physiology of the main phyletic groups represented in marine and freshwater systems and in addition reviews recent adva ..."
"In Delfosse, E. S. (ed.). Proceedings ofthe Sixth International Symposium on
Biologi— cal Control of I/Veeds, Vancouver. Ottawa: Agriculture Canada. UNCED
(1992). Agenda 21: The United Nations Programme ofActionfrom Rio. New York:
United Nations. Usher, M. B. (1986). Wildlife conservation evaluation: attributes,
criteria and values. In Usher, M. B. (ed). Wildlife Conservation Evaluation.
London: Chapman 86 Hall, pp. 3—44. Usher, M. ..."
Low-Dimensional and Symplectic Topology (Proceedings of Symposia in Pure Mathematics) by MichaelUsher Hardcover, 228 Pages, Published 2011 by American Mathematical Society ISBN-13: 978-0-8218-5235-4, ISBN: 0-8218-5235-3
"Every eight years since 1961, the University of Georgia has hosted a major international topology conference aimed at disseminating important recent results and bringing together researchers at different stages of their careers. This volume contains the proceedings of the 2009 conference, which includes survey and research articles concerning such areas as knot theory, contact and symplectic topology, 3-manifold theory, geometric group ..."
"In the mid 1970s two events led me to get to know the Yorkshire Dales better than I had previously. Since 1964 I had been to the Malham Tarn Field Centre with groups of students, first from the University of Edinburgh and then from the University of York, and my family very much enjoyed the summer days we spent amid this magnificent hill scenery. In 1976, the British Ecological Society and the National Trust jointly worked on a survey o ..."