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Books > Science & Mathematics > Biology, life sciences > Zoology & animal sciences > Animal ecology

Physiological Ecology of Pacific Salmon (Paperback): Cornelis Groot Physiological Ecology of Pacific Salmon (Paperback)
Cornelis Groot; Edited by Leo Margolis
R3,765 Discovery Miles 37 650 Ships in 12 - 17 working days

Every year, countless juvenile Pacific salmon leave streams andrivers on their migration to feeding grounds in the North Pacific Oceanand the Bering Sea. After periods ranging from a few months to severalyears, adult salmon enter rivers along the coasts of Asia and NorthAmerica to spawn and complete their life cycle. Within this generaloutline, various life history patterns, both among and within species,involve diverse ways of exploiting freshwater, estuarine, and marinehabitats. There are seven species of Pacific salmon. Five (coho,chinook chum, pink, and sockeye) occur in both North America and Asia.Their complex life histories and spectacular migrations have longfascinated biologists and amateurs alike. Physiological Ecology of Pacific Salmon providescomprehensive reviews by leading researchers of the physiologicaladaptations that allow Pacific Salmon to sustain themselves in thediverse environments in which they live. It begins with an analysis ofenergy expenditure and continues with reviews of locomotion, growth,feeding, and nutrition. Subsequent chapters deal with osmoticadjustments enabling the passage between fresh and salt water, nitrogenexcretion and regulation of acid-base balance, circulation and gastransfer, and finally, responses to stress. This thorough and authoritative volume will be a valuable referencefor students and researchers of biology and fisheries science as theyseek to understand the environmental requirements for the perpetuationof these unique and valuable species.

Biological Diversity - Frontiers in Measurement and Assessment (Paperback): Anne E Magurran, Brian J. McGill Biological Diversity - Frontiers in Measurement and Assessment (Paperback)
Anne E Magurran, Brian J. McGill
R1,993 Discovery Miles 19 930 Ships in 12 - 17 working days

Biological Diversity provides an up to date, authoritative review of the methods of measuring and assessing biological diversity, together with their application. The book's emphasis is on quantifying the variety, abundance, and occurrence of taxa, and on providing objective and clear guidance for both scientists and managers. This is a fast-moving field and one that is the focus of intense research interest. However the rapid development of new methods, the inconsistent and sometimes confusing application of old ones, and the lack of consensus in the literature about the best approach, means that there is a real need for a current synthesis. Biological Diversity covers fundamental measurement issues such as sampling, re-examines familiar diversity metrics (including species richness, diversity statistics, and estimates of spatial and temporal turnover), discusses species abundance distributions and how best to fit them, explores species occurrence and the spatial structure of biodiversity, and investigates alternative approaches used to assess trait, phylogenetic, and genetic diversity. The final section of the book turns to a selection of contemporary challenges such as measuring microbial diversity, evaluating the impact of disturbance, assessing biodiversity in managed landscapes, measuring diversity in the imperfect fossil record, and using species density estimates in management and conservation.

Ecology and Conservation of Wolves in a Changing World (Hardcover): Ludwig N Carbyn, Steven H. Fritts, Dale R. Seip Ecology and Conservation of Wolves in a Changing World (Hardcover)
Ludwig N Carbyn, Steven H. Fritts, Dale R. Seip
R1,836 R1,558 Discovery Miles 15 580 Save R278 (15%) Ships in 12 - 17 working days

A compilation of highly sought-after research focusing on wolf management and recovery programs in North America. Reviews the status of wolves in Canada, the United States, Greenland, and the Trans-Himalayan region. Specific chapters address several themes: historical perspectives and the evolution of wolf-human relationships; the status, biology, and management of wolves; restoration, reintroduction, and control programs; wolf-prey dynamics and implications of conservation practices; behavior and social interactions; taxonomy; diseases and physiology; and, research and management techniques. Proceedings of the Second North American Symposium on Wolves, 1992. Papers by: L. Boitani; F.F. Gilbert; R.D. Hayes and J.R. Gunson; F.L. Miller; R.O. Stephenson, W.B. Ballard, C.A. Smith, and K. Richardson; U. Marquard-Peterson; R.P. Thiel and R.R. Ream; P. Schullery and L. Whittlesey; C.E. Kay; D. Dekker, W. Bradford, and J.R. Gunson; J.L. Fox and R.S. Chundawat; S.H. Fritts, D.R. Harms, J.A. Fontaine and M.D. Jimenez; D.K. Boyd, P.C. Pacquet, S. Donelon, R.R. Ream, D.H. Pletscher, and C.C. White; D.R. Parsons and J.E. Nicholopoulos; A.P. Wydeven, R.N. Schultz, and R.P. Thiel; M.K. Phillips, R. Smith, V.G. Henry, and C. Lucash; R.P. Thiel and T. Valen; D.R. Seip; F. Messier; M.S. Boyce; D.J. Vales and J.M. Peek; B.W. Dale, L.G. Adams, and R.T. Bowyer; L.D. Mech, T.J. Meier, J.W. Burch, and L.G. Adams; L.G. Adams, B.W. Dale, and L.D. Mech; D.C. Thomas; D.R. Klein; C.S. Asa; C.S. Asa and L.D. Mech; T.J. Meier, J.W. Burch, L.D. Mech, and L.G. Adams; G.J. Forbes and J.B. Theberge; R.O. Peterson; T.K. Fuller; S.G. Fancy and W.B. Ballard; C. Vila, V. Urios, and J. Castroviejo; R.E. Anderson, B.L.C. Hill, J. Ryon, and J.C. Fentress; W.G. Brewster and S.H. Fritts; R.M. Nowak; R.K. Wayne, N. Lehman, and T.K. Fuller; R.M. Nowak, M.K. Phillips, V.G. Henry, W.C. Hunter, and R. Smith; C.J. Brand, M.J. Pybus, W.B. Ballard, and R.O. Peterson; M.R. Johnson, T.N. Bailey, E.E. Bangs, and R.O. Peterson; M.D. Drag, W.B. Ballard, G.M. Matson, and P.R. Krausman. W.B. Ballard, D.J. Reed, S.G. Fancy, and P.R. Krausman; W.B. Ballard, M.E. McNay, C.L. Gardner, and D.J. Reed; D.A. Haggstrom, A.k. Ruggles, C.M. Harms, and R.O. Stephenson; H.D. Cluff and D.L. Murray; R.D. Boertje, D.G. Kelleyhouse, and R.D. Hayes; R. Reid and D. Janz; R. Coppinger and L. Coppinger; P.L. Clarkson; L.D. Mech; Epilogue by M. Hummel

Ecological and Environmental Physiology of Birds (Hardcover, New): J. Eduardo P. W Bicudo, William A. Buttemer, Mark A.... Ecological and Environmental Physiology of Birds (Hardcover, New)
J. Eduardo P. W Bicudo, William A. Buttemer, Mark A. Chappell, James T. Pearson, Claus Bech
R4,777 Discovery Miles 47 770 Ships in 10 - 15 working days

Birds have colonized almost every terrestrial habitat on the planet - from the poles to the tropics, and from deserts to high mountain tops. Ecological and Environmental Physiology of Birds focuses on our current understanding of the unique physiological characteristics of birds that are of particular interest to ornithologists, but also have a wider biological relevance.
An introductory chapter covers the basic avian body plan and their still-enigmatic evolutionary history. The focus then shifts to a consideration of the essential components of that most fundamental of avian attributes: the ability to fly. The emphasis here is on feather evolution and development, flight energetics and aerodynamics, migration, and as a counterpoint, the curious secondary evolution of flightlessness that has occurred in several lineages. This sets the stage for subsequent chapters, which present specific physiological topics within a strongly ecological and environmental framework. These include gas exchange, thermal and osmotic balance, 'classical' life history parameters (male and female reproductive costs, parental care and investment in offspring, and fecundity versus longevity tradeoffs), feeding and digestive physiology, adaptations to challenging environments (high altitude, deserts, marine habitats, cold), and neural specializations (notably those important in foraging, long-distance navigation, and song production).
Throughout the book classical studies are integrated with the latest research findings. Numerous important and intriguing questions await further work, and the book concludes with a discussion of methods (emphasizing cutting-edge technology), approaches, and future research directions.

Avian Invasions - The Ecology and Evolution of Exotic Birds (Hardcover): Tim M. Blackburn, Julie L. Lockwood, Phillip Cassey Avian Invasions - The Ecology and Evolution of Exotic Birds (Hardcover)
Tim M. Blackburn, Julie L. Lockwood, Phillip Cassey
R2,354 Discovery Miles 23 540 Ships in 10 - 15 working days

Biological invaders represent one of the primary threats to the maintenance of global biodiversity, human health, and the success of human economic enterprises. The continuing globalization of our society ensures that the need to understand the process of biological invasion will only increase in the future. There is also a growing recognition that the study of biological invaders provides a unique insight into basic questions in ecology and evolution.
The study of exotic birds has had a particularly long history and has come to represent a fascinating intersection between the study of biological invasions, avian conservation biology, and basic principles of ecology and evolution. Avian Invasions summarizes and synthesizes this unique historical record and unravels the insights that the study of exotic birds brings to all three of these research strands. It includes chapters on the well-known contributions of exotic bird study to ecological science, and on the post-establishment evolution of introduced bird populations. The result is the most comprehensive picture yet of the invasion process.
Avian Invasions is aimed at professional avian biologists and ornithologists as well as graduate students of avian ecology, evolution and conservation. It also appeals to a more general audience of invasion ecologists.

The Biology of Alpine Habitats (Paperback): Laszlo Nagy, Georg Grabherr The Biology of Alpine Habitats (Paperback)
Laszlo Nagy, Georg Grabherr
R2,376 Discovery Miles 23 760 Ships in 10 - 15 working days

This book is unique in providing a global overview of alpine (high mountain) habitats that occur above the natural (cold-limited) tree line, describing the factors that have shaped them over both ecological and evolutionary timescales. The broad geographic coverage helps synthesize common features whilst revealing differences in the world's major alpine systems from the Arctic to the Tropics. The words "barren" and "wasteland" have often been applied to describe landscapes beyond the tree line. However, a closer look reveals a large diversity of habitats, assemblages and individual taxa in the alpine zone, largely connected to topographic diversity within individual alpine regions.
The book considers habitat-forming factors (landforms, energy and climate, hydrology, soils, and vegetation) individually, as well as their composite impacts on habitat characteristics. Evolution and population processes are examined in the context of the responsiveness/resilience of alpine habitats to global change. Finally, a critical assessment fo the potential impacts of climate change, atmospheric pollutants and land use is made and related to the management and conservation options available for these unique habitats.
Interest in mountains continues to grow as their resource importance is increasingly recognized. This accessible text is suitable for both senior undergraduate and graduate students taking courses in ecology and environmental sciences as well as the many professional ecologists and conservation biologists requiring a concise, authoritative overview of the topic.
Each of the books in the Oxford Biology of Habitats Series introduces a different habitat, and gives an integrated overview of the design, physiology, ecology, and behaviour of the organisms found there. The practical aspects of working within each habitat, the sorts of studies that are possible, and habitat biodiversity and conservation status are all explored.

Ecology and Evolution of Parasitism (Paperback, New): Frederic Thomas, Jean-Fran cois Gu egan, Francois Renaud Ecology and Evolution of Parasitism (Paperback, New)
Frederic Thomas, Jean-Fran cois Gu egan, Francois Renaud
R2,484 Discovery Miles 24 840 Ships in 10 - 15 working days

Is it possible to omit parasites when studying free-living organisms? The answer is clearly no! Parasites have evolved independently in numerous animal lineages, and now make up a considerable proportion of the biodiversity of life. Ecologists, epidemiologists, conservationists and evolutionary biologists are increasingly aware of the universal significance of parasites to the study of ecology and evolution where they have become a powerful model system. This book provides a summary of the issues involved as well as an overview of the possibilities offered by this research topic including the practical applications for disease prevention. It uses well-documented case-studies across a range of scales to illustrate the main trends and prospects in this area, outlining areas for future research.
Ecology and Evolution of Parasitism is the first book to provide a broad synthesis of both the roles and consequences of pathogens on the ecology and evolution of free living systems. It focuses on hosts rather than the parasites themselves, integrating those aspects related to the ecology and the evolution of free-living species (sexual selection, behaviour, life history traits, regulation of populations etc.). The book includes examples across a range of scales from individuals to populations, communities and ecosystems.

Ecological and Environmental Physiology of Amphibians (Paperback): Stanley S. Hillman, Philip C. Withers, Robert C. Drewes,... Ecological and Environmental Physiology of Amphibians (Paperback)
Stanley S. Hillman, Philip C. Withers, Robert C. Drewes, Stanley D. Hillyard
R1,973 Discovery Miles 19 730 Ships in 9 - 15 working days

Amphibians are the extant descendants of the first vertebrate class to successfully colonize terrestrial environments; hence they occupy a unique position between fish and reptiles. Amphibian skin provides essentially no resistance to evaporative water loss, and consequently daily water turnover rates are an order of magnitude greater than in other terrestrial vertebrate groups. This has led to a suite of physiological, morphological and behavioural adaptations that have allowed a successful terrestrial existence in spite of this apparently spendthrift water retention strategy. Ecological and Environmental Physiology of Amphibians provides a synthesis of current research on the comparative physiology of amphibians with a particular emphasis on water balance. It adopts a strong environmental perspective and includes a wealth of information on ecology, phylogeny and development. As with other books in the Ecological and Environmental Physiology Series, the emphasis in this book is on the unique physiological characteristics of the amphibians, although the latest experimental techniques and future research directions are also considered. This accessible text is suitable for both graduate students and researchers in the fields of amphibian comparative physiology and physiological ecology, including specialist courses in amphibian ecology. It will also be of value and use to the many professional herpetologists requiring a concise overview of the topic.

Clonality - The Genetics, Ecology, and Evolution of Sexual Abstinence in Vertebrate Animals (Hardcover): John C. Avise Clonality - The Genetics, Ecology, and Evolution of Sexual Abstinence in Vertebrate Animals (Hardcover)
John C. Avise
R2,812 Discovery Miles 28 120 Ships in 10 - 15 working days

Approximately 99.9% of vertebrate species reproduce sexually. The exceptional 0.1% reproduce via asexual or clonal means, which vary wildly and are fascinating in their own right. In this book, John C. Avise describes the genetics, ecology, natural history, and evolution of the world's approximately 100 species of vertebrate animal that routinely display one form or another of clonal or quasi-clonal reproduction. Approximately 99.9% of vertebrate species reproduce sexually. The exceptional 0.1% reproduce via asexual or clonal means, which vary wildly and are fascinating in their own right. In this book, John C. Avise describes the genetics, ecology, natural history, and evolution of the world's approximately 100 species of vertebrate animal that routinely display one form or another of clonal or quasi-clonal reproduction. By considering the many facets of sexual abstinence and clonal reproduction in vertebrate animals, Avise sheds new light on the biological meaning and ramifications of standard sexuality.

Malformed Frogs - The Collapse of Aquatic Ecosystems (Hardcover): Michael Lannoo Malformed Frogs - The Collapse of Aquatic Ecosystems (Hardcover)
Michael Lannoo
R2,107 R1,722 Discovery Miles 17 220 Save R385 (18%) Ships in 12 - 17 working days

"The 1995 discovery of malformed frogs in a Minnesota wetland is one of a few singular events in the history of environmental awareness that has forever changed our views regarding the plight of global biodiversity. Lannoo's book offers a comprehensive and up-to-date assessment of the malformed frog phenomenon and its likely causes, as well as its possible relation to environmentally mediated malformations in humans. It immediately ranks as a definitive source for information regarding malformed frogs in the larger context of global amphibian declines."--James Hanken, Alexander Agassiz Professor of Zoology, Curator in Herpetology, and Director, Museum of Comparative Zoology, Harvard University
"Lannoo's book is unequivocally the definitive work on frog malformations, with broad relevance to the global decline of amphibians, the degradation of natural wetlands, and our own environmental legacy. This scholarly presentation by a top-rate scientist focuses on an irrefutable phenomenon in which frogs are serving as sentinels to which all of society should be listening."--J. Whitfield Gibbons, Odum School of Ecology, University of Georgia
""Malformed Frogs" is a scientific detective story with a moral: things aren't often what they seem! Mike Lannoo's engaging prose captures the joys and drudgery of fieldwork as well as the fallible, human side of science, all in the service of understanding the occurrence of deformed amphibians. He convincingly shows that although not one of the commonly advanced explanations can suffice, we know enough right now to solve the problem."--Harry W. Greene, Department of Ecology and Evolutionary Biology, Cornell University

Fundamental Processes in Ecology - An Earth Systems Approach (Paperback): David M. Wilkinson Fundamental Processes in Ecology - An Earth Systems Approach (Paperback)
David M. Wilkinson
R1,255 Discovery Miles 12 550 Ships in 10 - 15 working days

Fundamental Processes in Ecology presents a way to study ecosystems that is not yet available in ecology textbooks but is resonant with current thinking in the emerging fields of geobiology and Earth System Science. It provides an alternative, process-based classification of ecology and proposes a truly planetary view of ecological science. To achieve this, it asks (and endeavours to answer) the question, "what are the fundamental ecological processes which would be found on any planet with Earth-like, carbon based, life?"
The author demonstrates how the idea of fundamental ecological processes can be developed at the systems level, specifically their involvement in control and feedback mechanisms. This approach allows us to reconsider basic ecological ideas such as energy flow, guilds, trade-offs, carbon cycling and photosynthesis; and to put these in a global context. In doing so, the book puts a much stronger emphasis on microorganisms than has traditionally been the case.
The integration of Earth System Science with ecology is vitally important if ecological science is to successfully contribute to the massive problems and future challenges associated with global change. Although the approach is heavily influenced by Lovelock's Gaia hypothesis, this is not a popular science book about Gaian theory. Instead it is written as an accessible text for graduate student seminar courses and researchers in the fields of ecology, earth system science, evolutionary biology, palaeontology, history of life, astrobiology, geology and physical geography.

The Green Tiger - The Costs of Ecological Decline in the Philippines (Paperback, annotated edition): Barbara Goldoftas The Green Tiger - The Costs of Ecological Decline in the Philippines (Paperback, annotated edition)
Barbara Goldoftas
R1,296 Discovery Miles 12 960 Ships in 10 - 15 working days

Once famous for the beauty of its white beaches, reef-ringed islands, and lush forests, today the Philippines is known as an example of the deep costs of ecological decline. In less than a generation, large and small users alike felled the forests, shattered the coral reefs, and over-fished the oceans. The rapid harvest of the once-abundant resources has brought environmental changes: droughts, deadly flash floods, and the collapse of vital fisheries. The consequences have reverberated throughout the country. As the rural economy weakened, millions migrated to the cities, overwhelming the infrastructure and deepening the problems of urban health. Pioneering efforts have been launched to curtail the environmental damage and manage the resources that remain. Trained as a botanist and plant ecologist, writer Barbara Goldoftas traveled extensively throughout the archipelago to document the loss of the natural resources, the dramatic human costs, and efforts to reverse the decline. Along the forest frontier, she met villagers whose fields had been washed away by mudslides and church workers risking their lives to defend the dwindling forests. In coastal villages, she spoke with fishermen who, having watched their catches diminish with the dying reefs, enforced the boundaries of no-take zones. In towns and villages alike, she interviewed local politicians and leaders of non-governmental organizations working to combine conservation and development and keep their communities intact. Written about a country often described as an environmental worst-case scenario, The Green Tiger offers an unusually close look at the consequences of ecological decline and determined efforts to reverse them. Itargues that, rather than destroying a natural resource base, development should integrate conservation and economic growth. It gives a realistic, but optimistic vision of the long process of "nation-building" that is the backdrop of environmental work in a developing country and a new democracy.

Evolutionary Ecology - The Trinidadian Guppy (Paperback): Anne E Magurran Evolutionary Ecology - The Trinidadian Guppy (Paperback)
Anne E Magurran
R2,306 Discovery Miles 23 060 Ships in 10 - 15 working days

This book celebrates the guppy's unique contribution to evolutionary ecology. Ever since Caryl Haskins described guppy populations as a 'natural experiment' because of the way predation pressure varies over a small geographical area, generations of researchers have been drawn to Trinidad to investigate evolution in the wild. The species continues to provide classic examples of natural selection in action and elegantly illustrates how ecology, evolution, and behaviour are interlinked.
Anne Magurran's account of the evolutionary ecology of the guppy integrates historical breakthroughs with new research in this fast-moving field. She reveals how guppies provided some of the first evidence of sperm competition and sexual selection, and how they continue to inform scientific thought on mating systems and cryptic choice. The consequences of variation in predation risk--as well as a host of other biotic and abiotic factors--are described and evaluated at all life stages from conception to death. The book discusses behavioural responses to ecological conditions alongside life history patterns. It examines the potential for ecological speciation and discusses new research into how reproductive isolating mechanisms become established in promiscuous mating systems. Conservation issues are also considered, both in terms of protecting the irreplaceable Trinidadian guppy system and in the context of invasion ecology.
This timely synthesis of research into a species that has raised key questions in evolutionary ecology will be of great interest to graduate level students as well as professional researchers in the fields of behavioural ecology and evolutionary biology.

Ecology of Predator-Prey Interactions (Hardcover): Pedro Barbosa, Ignacio Castellanos Ecology of Predator-Prey Interactions (Hardcover)
Pedro Barbosa, Ignacio Castellanos
R3,841 Discovery Miles 38 410 Ships in 10 - 15 working days

This book addresses the fundamental issues of predator-prey interactions, with an emphasis on predation among arthropods, which have been better studied, and for which the database is more extensive than for the large and rare vertebrate predators. The book should appeal to ecologists interested in the broad issue of predation effects on communities.

Aquatic Ecosystems: Interactivity of Dissolved Organic Matter (Hardcover, C Ed): Stuart Findlay, Robert L. Sinsabaugh Aquatic Ecosystems: Interactivity of Dissolved Organic Matter (Hardcover, C Ed)
Stuart Findlay, Robert L. Sinsabaugh
R4,765 Discovery Miles 47 650 Ships in 10 - 15 working days

Aquatic Ecosystems explains the interplay between various movements of matter and energy through ecosystems mediated by Dissolved Organic Matter. This book provides information on how much DOM there is in a particular aquatic ecosystem and where it originates. It explains whether the DOM composition varies from time to time and place to place. It also details how DOM becomes incorporated into microbial food webs, and gives a better, clarifying, understanding to its significance of DOM.
Dissolved Organic Matter (called DOM) is incredibly important in all aquatic ecosystems. Although it might seem that logs and leaves are more important, in fact the DOM is more crucial because the DOM is in a form that is available for use by all the organisms living in the the water. Furthermore, DOM influences complex food webs by mediating the availability of aquatic nutrients, metals, salts and minerals. DOM also affects water clarity, which of course has alters the way animals and plants live and feed in the water.
There are many ways to study DOM and this book focuses on several central questions. How much DOM is there in a particular aquatic ecosytem? Where does it come from? Does the composition of the DOM vary from time to time and place to palce? How does DOM become incorporated into microbial food webs, which are the basis of plant, invertebrate and vertebrate food webs? How can the answers to these and other questions about DOM be considered together so that a better understanding of the significance of DOM can emerge?

Structure and Function of an Alpine Ecosystem - Niwot Ridge, Colorado (Hardcover): William D. Bowman, Timothy R. Seastedt Structure and Function of an Alpine Ecosystem - Niwot Ridge, Colorado (Hardcover)
William D. Bowman, Timothy R. Seastedt
R6,682 Discovery Miles 66 820 Ships in 10 - 15 working days

This book provides a complete overview of an alpine ecosystem, based on the long-term research conducted at the Niwot Ridge LTER. The alpine ecosystem features conditions near the limits of biological existence, and is a useful laboratory for asking more general ecological questions, because it offers large environmental change over relatively short distances. Factors such as macroclimate, microclimate, soil conditions, biota, and various biological factors change on differing scales, allowing insight into the relative contributions of the different factors on ecological outcomes.

Ecosystem Dynamics of the Boreal Forest - The Kluane Project (Hardcover): Charles J. Krebs, Stan Boutin, Rudy Boonstra Ecosystem Dynamics of the Boreal Forest - The Kluane Project (Hardcover)
Charles J. Krebs, Stan Boutin, Rudy Boonstra
R5,723 Discovery Miles 57 230 Ships in 10 - 15 working days

This book describes the Kluane Boreal Forest Ecosystem Project which operated from 1986 to 1996 in the southwestern Yukon. It begins by describing the area and its physical setting, and then the background of the project and the wisdom that had accumulated to 1986, on how this system might operate. The details of the experiments set up are presented, partly to help the reader appreciate the difficulty of working at -40 degrees and partly to aid the reader should they contemplate doing similar experiements in the future. Then they examine the three trophic levels of plants, the herbivores, and the predators in detail to provide some surprises about how the individual species operate within the overall system. Finally, they synthesize their findings in a model of the boreal forest vertebrate community, and provide an overview of what they have discovered and what remains to be done. Over the ten years of this project a large number of students and researchers have joined together to produce a picture which makes major advances in our understanding of the boreal forest ecosystem.

Dispersal (Hardcover): Jean Clobert, Etienne Danchin, Andre A. Dhondt, James D. Nichols Dispersal (Hardcover)
Jean Clobert, Etienne Danchin, Andre A. Dhondt, James D. Nichols
R4,553 Discovery Miles 45 530 Ships in 10 - 15 working days

Habitat fragmentation and global climate change are the two major environmental threats to the persistence of species and ecosystems. The probability of a species surviving such changes is strongly dependent on its ability to track shifts in the environmental, either by moving between patches of habitat or by rapidly adapting to local condition. These 'solutions' to problems posed by environmental change depend on dispersal propensity, motivating our desire to better understand this important behavior. This book is a comprehensive overview of the new developments in the study of dispersal and the state-of-the-art research on the evolution of this trait. The causes, mechanisms, and consequences of dispersal at the individual, population, and species levels are considered. The promise of new techniques and models for studying dispersal, drawn from molecular biology and demography is explored. Perspectives on the study of dispersal are offered from evolution, conservation biology, and genetics. Throughout the book, theoretical approaches are combined with empirical data, and examples are included from as wide a range of species as possible.

Readings in Ecology (Paperback): Stanley I. Dodson, Timothy F.H. Allen, Stephen R. Carpenter, Kandis Elliot, Anthony R. Ives,... Readings in Ecology (Paperback)
Stanley I. Dodson, Timothy F.H. Allen, Stephen R. Carpenter, Kandis Elliot, Anthony R. Ives, …
R5,407 Discovery Miles 54 070 Ships in 10 - 15 working days

The papers included in this readings text were selected and are introduced by the authors of Ecology as examples of excellent and insightful research that greatly contributes to our grasp and exploration of ecological questions. These studies span the range of ecological perspectives and are significant reading for every student in the life sciences.

Geographic Variation in Behavior - Perspectives on Evolutionary Mechanisms (Hardcover, New): Susan A. Foster, John A. Endler Geographic Variation in Behavior - Perspectives on Evolutionary Mechanisms (Hardcover, New)
Susan A. Foster, John A. Endler
R11,104 Discovery Miles 111 040 Ships in 10 - 15 working days

This volume brings together evidence that animal behaviour varies geograhically, and explores some of the richness in phenomena, interpretations, and problems which can arise in such studies. The authors summarize advances in the field to date, evaluate the strengths and weaknesses of various approaches, and give a clear and balanced overview of this area.

Species Coexistence (Paperback): Tokeshi Species Coexistence (Paperback)
Tokeshi
R4,218 Discovery Miles 42 180 Ships in 10 - 15 working days

As a novel endeavour in ecological science, this book focuses on a major issue in organismal life on Earth: species coexistence. The book crosses the usual disciplinary boundaries between palaeobiology, ecology and evolutionary biology and provides a timely overview of the patterns and processes of species diversity and coexistence on a range of spatio-temporal scales. In this unique synthesis, the author offers a critical and penetrating examination of the concepts and models of coexistence and community structure, thus making a valuable contribution to the field of community ecology. There is an emphasis on clarity and accessibility without sacrificing scientific rigour, making this book suitable for both advanced students and individual researchers in ecology, palaeobiology and environmental and evolutionary biology.
Comprehensive and contemporary synthesis.
Pulls together the aggregate influence of evolution and ecology on patterns in communities.
Balanced mix of theory and empirical work.
Clearly structured chapters with short introduction and summary.

Ecological Dynamics (Hardcover): Gurney, Nisbet Ecological Dynamics (Hardcover)
Gurney, Nisbet
R6,278 Discovery Miles 62 780 Ships in 10 - 15 working days

Ecological Dynamics is unique in that it can serve both as an introductory text in numerous ecology courses and as a resource for more advanced work. It provides a flexible introduction to ecological dynamics that is accessible to students with limited previous mathematical and computational experience, yet also offers glimpses into the state of the art in the field.

The book is divided into three parts: Part I, Methodologies and Techniques, defines the authors' modeling philosophy, focusing on models rather than ecology, and introduces essential concepts for describing and analyzing dynamical systems. Part II, Individuals to Ecosystems, the core of the book, describes the formulation and analysis of models of individual organisms, populations, and ecosystems. Part III, Focus on Structure, introduces more advanced readers to models of 'structured' and spatially extended populations. Approximately 25% of the book is devoted to case studies drawn from the authors' research. Readers are guided through the many judgment calls involved in model formulation, shown the key steps in model analysis, and offered the authors' interpretation of the results. All chapters end with exercises and projects. While the book is designed to be independent of any particular computing environment, a well-tested software package (SOLVER),including programs for solution of differential and difference equations, is available via the World Wide Web at http://www.stams.strath.ac.uk/external/solver.

Ideal for courses in modeling ecological and environmental change, Ecological Dynamics can also be used in other courses such as theoretical ecology, population ecology, mathematical biology and ecology, and quantitative ecology.

In a Desert Garden - Love and Death Among the Insects (Hardcover, New): John Alcock In a Desert Garden - Love and Death Among the Insects (Hardcover, New)
John Alcock; Illustrated by Turid Forsyth
R713 R545 Discovery Miles 5 450 Save R168 (24%) Out of stock

With canny insight and bone-dry wit, John Alcock, a specialist in the ecology of the American Southwest, introduces us to the lives and loves of desert insects as they forage through his backyard oasis. Creating his own desert garden behind his suburban home in Tempe, Arizona, Alcock scrutinizes every square inch of soil detailing the exotic plant life he finds and offering tips on its peccadilloes and preservation. The true heroes of this story, however, are the bugs of Alcock's backyard. We are drawn into complex plots almost biblical in nature of life and love, survival and death. Two male earwigs caught in each other's pincers battle for a prized female. A female mantis finishes copulating, beheads her mate, and cannibalizes his body for its precious protein. With each detail, Alcock pieces together the entire ecosystem of his desert paradise. Always amusing and instructive, and sometimes dramatic, In a Desert Garden provides an eye-opening meditation on the joys of planting, weeding, pruning, and, most of all, bug-hunting.

Melanism: Evolution in Action (Paperback, New): Michael E.N. Majerus Melanism: Evolution in Action (Paperback, New)
Michael E.N. Majerus
R2,695 Discovery Miles 26 950 Ships in 10 - 15 working days

Melanism: Evolution in Action describes investigations into a ubiquitous biological phenomenon, the existence of dark, or melanic, forms of many species of mammals, insects, and some plants. Melanism is a particularly exciting phenomenon in terms of our understanding of evolution. Unlike many other polymorphisms, the rise of a melanic population within a species is a visible alteration. Not only this, but melanism may sometimes occur dramatically quickly compared to other evolutionary change. Examples of melanism include one of the most famous illustrations of Darwinian natural selection, the peppered moth. This book, the first written on melanism since 1973, gives a lucid and up-to-date appraisal of the subject. The book is divided into ten chapters. The first four chapters place melanism into its historical and scientific context, with illustrations of its occurrence, and physical and genetic properties. Chapters 5-9 look in more detail at melanism in moths and ladybirds, explaining the diversity of evolutionary reasons for melanism, and the complexities underlying this apparently simple phenomenon. The final chapter shows how the study of melanism has contibuted to our understanding of biological evolution as a whole. Written in an engaging and readable style, by an author whose enthusiasm and depth of knowledge is apparent throughout, this book will be welcomed by all students and researchers in the fields of evolution, ecology, entomology, and genetics. It will also be of relevance to professional and amateur entomologists and lepidopterists alike.

Palaeoecology and Palaeoenvironments of Late Cenozoic Mammals - Tributes to the Career of C.S. (Rufus) Churcher (Paperback):... Palaeoecology and Palaeoenvironments of Late Cenozoic Mammals - Tributes to the Career of C.S. (Rufus) Churcher (Paperback)
Kathlyn Stewart, Kevin Seymour
R2,113 Discovery Miles 21 130 Ships in 10 - 15 working days

This unique volume of thirty essays, by fifty-three internationally known scholars, honours C.S. (Rufus) Churcher, the distinguished Canadian palaeontologist. The papers focus on late Cenozoic mammals in North America and Africa and provide both site-specific descriptions of faunas and their associated geological contexts, and more general syntheses of regional palaeoenvironments and biogeography. The volume provides a much-needed overview of current research. The stature of the researchers who have contributed to the volume, and the breadth of the material presented, is a reflection of Churcher’s diverse research interests. The first section contains eleven papers on the palaeoenvironment and palaeoecology of Quaternary mammals in North America; the second section has 9 contributions describing faunas and morphological analyses of North American Quaternary mammals; and the final section contains nine papers on the palaeoecology and palaeoenvironments of late Cenozoic mammals of Africa. In this final section, Alan Gentry pays tribute to Churcher by naming a species after him: Budorcas churcheri. The volume contains individual discussions of North American fossil prairie dogs, mastodons, zebras, short-faced bears, sabre cats, lions, giant armadillos, elk-moose, caribou and muskrats, as well as African hyaenas, zebras, hipparion horses, antelopes, rodents, and giraffes.

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