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Books > Earth & environment > The environment > Conservation of the environment > Conservation of wildlife & habitats > General

Borealis (Paperback): Aisha Sabatini Sloan Borealis (Paperback)
Aisha Sabatini Sloan
R288 Discovery Miles 2 880 Ships in 12 - 17 working days

Art about glaciers, queer relationships, political anxiety, and the meaning of Blackness in open space-Borealis is a shapeshifting logbook of Aisha Sabatini Sloan's experiences moving through the Alaskan outdoors. In Borealis, Aisha Sabatini Sloan observes shorelines, mountains, bald eagles, and Black fellow travelers while feeling menaced by the specter of nature writing. She considers the meaning of open spaces versus enclosed ones and maps out the web of queer relationships that connect her to this quaint Alaskan town. Triangulating the landscapes she moves through with glacial backdrops in the work of Black conceptual artists and writers, Sabatini Sloan complicates tropes of Alaska to suggest that the excitement, exploration, and possibility of myth-making can also be twinned by isolation, anxiety, and boredom. Borealis is the first book commissioned for the Spatial Species series, edited by Youmna Chlala and Ken Chen. The series investigates the ways we activate space through language. In the tradition of Georges Perec's An Attempt at Exhausting a Place in Paris, Spatial Species titles are pocket-sized editions, each keenly focused on place. Instead of tourist spots and public squares, we encounter unmarked, noncanonical spaces: edges, alleyways, diasporic traces. Such intimate journeying requires experiments in language and genre, moving travelogue, fiction, or memoir into something closer to eating, drinking, and dreaming.

Tropical Fish Otoliths: Information for Assessment, Management and Ecology (Paperback, 2009 ed.): Bridget S Green, Bruce D.... Tropical Fish Otoliths: Information for Assessment, Management and Ecology (Paperback, 2009 ed.)
Bridget S Green, Bruce D. Mapstone, Gary Carlos, Gavin A. Begg
R5,769 Discovery Miles 57 690 Ships in 10 - 15 working days

Techniques and theory for processing otoliths from tropical marine fish have developed only recently due to an historic misconception that these organisms could not be aged. Otoliths are the most commonly used structures from which daily, seasonal or annual records of a fish's environmental history are inferred, and are also used as indicators of migration patterns, home range, spatial distribution, stock structure and life history events. A large proportion of projects undertaken on tropical marine organisms involve removal and processing of calcified structures such as otoliths, statoliths or vertebrae to retrieve biological, biochemical or genetic information. Current techniques and principles have evolved rapidly and are under constant modification and these differ among laboratories, and more particularly among species and within life history stages.

Tropical fish otoliths: Information for assessment, management and ecology is a comprehensive description of the current status of knowledge about otoliths in the tropics. This book has contributions from leading experts in the field, encompassing a tropical perspective on daily and annual ageing in fish and invertebrates, microchemistry, interpreting otolith microstructure and using it to back-calculate life history events, and includes a treatise on the significance of validating periodicity in otoliths.

The Iceland Experience - Joekulsarlon - Catalogue of an exhibition (Paperback): Rainer P. Strzolka, Susanne Engelmann Strzolka The Iceland Experience - Joekulsarlon - Catalogue of an exhibition (Paperback)
Rainer P. Strzolka, Susanne Engelmann Strzolka; Rainer P. Strzolka
R529 Discovery Miles 5 290 Ships in 10 - 15 working days

Catalogue of a New York exhibition with photographies of Jokulsarlon, Iceland

Management Planning for Nature Conservation - A Theoretical Basis & Practical Guide (Paperback, 2nd ed. 2013): Mike Alexander Management Planning for Nature Conservation - A Theoretical Basis & Practical Guide (Paperback, 2nd ed. 2013)
Mike Alexander
R3,564 Discovery Miles 35 640 Ships in 10 - 15 working days

The first edition of Mike Alexander s "Management Planning for Nature Conservation," brought a new dimension to the modern literature on conservation management. This second edition, a significant enhancement of the original, deals with the development both, conceptual and practical, of adaptive management planning for nature conservation. It is about preparing management plans, and guides the reader through the entire process. Case-studies, including a conservation and access plan, demonstrate the planning process in action. This approach to planning can be applied to any place which is managed entirely, or in part, for wildlife. It can be applied to the management of species or habitats in any circumstance, regardless of site designation. The process is fully compatible with the Convention on Biological Diversity s ecosystem approach to conservation management.

Mike Alexander has long been at the forefront of developing management planning for conservation, with experience ranging from Uganda to Estonia, and from Costa Rica to Wales. He is the General Secretary of the Conservation Management System Consortium, a group of organisations with a common aim of raising standards and developing best practice in conservation management and planning. In 2012 Mike Alexander was elected a Fellow of the Society of Biology in recognition of his contribution to nature conservation and in particular management planning.

This book has drawn on the experiences and expertise of the CMS consortium and other leaders in both conservation research and wildlife management from around the world. It is essential reading for professional conservation managers and any student studying management planning for conservation within a range of degree and postgraduate courses."

Insect Conservation: Past, Present and Prospects (Hardcover, 2012 ed.): Tim R. New Insect Conservation: Past, Present and Prospects (Hardcover, 2012 ed.)
Tim R. New
R5,838 Discovery Miles 58 380 Ships in 10 - 15 working days

The history of interest and practice in insect conservation is summarised and traced through contributions from many of the leaders in the discipline, to provide the first broad global account of how insects have become incorporated into considerations of conservation. The essays collectively cover the genesis and development of insect conservation, emphasising its strong foundation within the northern temperate regions and the contrasts with much of the rest of the world. Major present-day scenarios are discussed, together with possible developments and priorities in insect conservation for the future.

Understanding Animal Welfare - An Integrated Approach (Hardcover, 2012 ed.): Edward N. Eadie Understanding Animal Welfare - An Integrated Approach (Hardcover, 2012 ed.)
Edward N. Eadie
R4,726 Discovery Miles 47 260 Ships in 10 - 15 working days

This book examines the contents, influence, and potential of a personal selection of modern books published over the last fifty years that have been relevant to improving welfare. The works selected comprise three earlier classics that mainly deal with animal experimentation and intensive farming, as well as five that concentrate on specific subject areas, namely history, science, applied ethics, politics and law, that are important to protecting the welfare of animals against suffering inflicted by humans. The books are arranged in the order of their publication date, and for each one a few related works are also mentioned or discussed. This collection provides a broad understanding of animal protection issues, and provides the necessary basis for an informed and comprehensive approach to improving the welfare of animals. The books selected have been influential and they have the potential to improve animal welfare in the future.

Klamath River Basin - A Complex Case of Resources, Economics, Water Allocation and Species Management (Paperback): Mabel A.... Klamath River Basin - A Complex Case of Resources, Economics, Water Allocation and Species Management (Paperback)
Mabel A. Young, Jack O. Barnes
R1,597 Discovery Miles 15 970 Ships in 12 - 17 working days

The Klamath River Basin on the California-Oregon border is a focal point for local and national discussions on water allocation and species protection. Previously, water and species management issues have exacerbated competition and generated conflict among several interests: farmers, Indian tribes, commercial and sport fisherman, federal wildlife refuge managers, environmental groups, and state, local, and tribal governments. As is true in many regions in the West, the federal government plays a prominent role in the Klamath Basin's waters. This role stems primarily from (1)operation and management of the Bureau of Reclamation's Klamath Water Project; (2)management of federal lands, including six national wildlife refugees; and (3)implementation of federal laws such as the Endangered Species Act. This book provides an overview of the issues in the Klamath Basin, with a focus on the federal government's role in the region.

Enough for All Forever - A Handbook for Learning about Sustainability (Paperback, New): Joy Murray, Glenn Cawthorne,... Enough for All Forever - A Handbook for Learning about Sustainability (Paperback, New)
Joy Murray, Glenn Cawthorne, Christopher & Andrew Chris Dey
R1,429 R1,126 Discovery Miles 11 260 Save R303 (21%) Ships in 10 - 15 working days

Enough for All Forever is a handbook for learning about sustainability. It has been written specifically for educators: classroom practitioners; school and system administrators and managers; those who develop curriculum; academics; and others who share the goal of environmental equity for all. It is about integrating sustainability into teaching and learning at all levels. The focus of the book is how to live sustainably, in harmony with a planet that has finite resources. This is not a 'one size fits all' handbook. Rather, it is a broad collection of work from over fifty different authors, all of them experts in their field and all committed to doing something about sustainability.

Repairing Paradise - The Restoration of Nature in America's National Parks (Paperback): William R. Lowry Repairing Paradise - The Restoration of Nature in America's National Parks (Paperback)
William R. Lowry
R911 Discovery Miles 9 110 Ships in 10 - 15 working days

By the turn of the millennium, it had become painfully apparent that the United States had made some serious misjudgments in its interactions with the natural world. The country's treasured national parks, while remaining immensely popular tourist destinations, were not immune to the damage. Preservation alone would no longer be enough; by this time, repair and restoration were necessary.

Can the United States reverse the mistaken policies that severely damaged the crown jewels of its national park system? This thoughtful and hopeful book, in turns analytical and personal, investigates that critical question by focusing on four of America's most-loved public paces. In "Repairing Paradise," William Lowry, an eminent expert on U.S. natural resource policy, details and assesses four ambitious efforts to reverse environmental damage in the national parks:

- The reintroduction of wolves in Yellowstone

- Reducing the impact of vehicle traffic in Yosemite

- Restoring fresh water to the Everglades

- Removing structural impairments to river flows in the Grand Canyon

"Repairing Paradise" combines authoritative research with extensive personal experience. Lowry has spent time in all four of the parks --observing conditions, talking to the most informed decisionmakers, and taking photos. He deftly combines his field research with solid public policy analysis to paint an instructive portrait of the mission to restore the natural health and glory of some of the world's most wondrous places.

Wildlife Conservation Evaluation (Paperback, Softcover reprint of the original 1st ed. 1986): Michael Usher Wildlife Conservation Evaluation (Paperback, Softcover reprint of the original 1st ed. 1986)
Michael Usher
R1,594 Discovery Miles 15 940 Ships in 10 - 15 working days

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 of the biological interest of the National Trust properties of the Kent, East Anglian and Yorkshire Regions. Malham Tarn itself, and the surrounding farms, formed one of the twenty properties of the Yorkshire Region. I spent the bank holiday, that commemorated the Queen's Silver Jubilee, at Malham, looking fairly closely at the National Trust's landholding there. Miss Sarah Priest, who also looked at the National Trust properties, and I produced a report in late 1977, attempting both to describe and to evaluate the nature resources of the National Trust in Yorkshire. In the following year, 1978, the Nature Conservancy Council wanted to survey the whole of the upland area that was known as the Malhaml Arncliffe SSSI (Site of Special Scientific Interest). A contract to look at such an exciting area, considering where boundaries should go, and looking to see if there were important areas of habitat that should be brought within the SSSI, was a superb practical antidote to an office in the University.

Reef Fish Spawning Aggregations: Biology, Research and Management (Hardcover, 2012): Yvonne Sadovy De Mitcheson, Patrick L.... Reef Fish Spawning Aggregations: Biology, Research and Management (Hardcover, 2012)
Yvonne Sadovy De Mitcheson, Patrick L. Colin
R5,899 Discovery Miles 58 990 Ships in 10 - 15 working days

Reef fish spawning aggregations, ranging from small groups to many tens of thousands of individuals, are spectacular but poorly known natural phenomena whereby fish assemble at specific times and locations to spawn. For some species these large groups may be the only form of reproduction, the high fish numbers briefly giving a false impression of stability and abundance-an 'illusion of plenty'. They are often a focus for intensive seasonal fishing because of their predictability and because many important commercial fishes form them. Highly vulnerable to overexploitation, many aggregations and their associated fisheries, have disappeared or are in decline. Few are effectively managed or incorporated into protected areas. Aggregations are not well understood by fishery scientists, managers and conservationists and their significance little appreciated by fishers or the wider public. To ensure their persistence to replenish important fisheries in coral ecosystems, maintain their ecosystem function and continue to delight divers, a significant change in perspective is needed to foster protection and management. This book provides comprehensive and practical coverage of the biology, study and management of reef fish aggregations, exploring their how, when, where, and why. It explores ways to better protect, study, manage and conserve them, while identifying key data gaps and questions. The text is extensively illustrated with many unique, never before published, photographs and graphics. Case studies on over 20 interesting and important fishes are included, outlining their biology and fisheries and highlighting major concerns and challenges.

Biology and Conservation of the European Sturgeon Acipenser sturio L. 1758 - The Reunion of the European and Atlantic Sturgeons... Biology and Conservation of the European Sturgeon Acipenser sturio L. 1758 - The Reunion of the European and Atlantic Sturgeons (Hardcover, 2011 ed.)
Patrick Williot, Eric Rochard, Nathalie Desse-Berset, Frank Kirschbaum, Joern Gessner
R5,917 Discovery Miles 59 170 Ships in 10 - 15 working days

The book aims at synthesizing our current knowledge of Acipenser sturio and its management. This species, one of the most widespread sturgeon species all over Western Europe ranging from the Black Sea to the Baltic, is now on the verge of extinction. Major aspects of its biology and management, including mismanagement, are provided in a historic perspective. Similarly, the changes in the restoration programs (in situ and ex situ) initiated in France and Germany are presented. As the species occurred in sympatry with Acipenser oxyrinchus in Germany and Poland and very recently in France as well, a brief outlook on restoration-management programs of A. oxyrinchus are also provided for both North America and Northern European countries, namely Germany and Poland. As conservation-restoration actions go beyond scientific issues, non-governmental stakeholders and marine professional fishermen's organizations have also been asked to contribute, and the key role of a French-German cooperation plan is underlined. A part of the book is devoted to perspectives. Illustrations of the European sturgeon, mainly in photographs, but also in stamps and paintings, are presented.

Diplomacy, Funding and Animal Welfare (Hardcover, 2011 Ed.): Larry Winter Roeder Jr Diplomacy, Funding and Animal Welfare (Hardcover, 2011 Ed.)
Larry Winter Roeder Jr
R4,510 Discovery Miles 45 100 Ships in 10 - 15 working days

Diplomacy, Funding and Animal Welfare is a practical guide to the best diplomatic and negotiation practices needed to convince governments and international institutions to effectively protect animals, which also introduces new approaches to fundraising. Animal protection advocates are prepared for speaking to diplomats and government officials in any setting, and to combatants in war zones. The book mainly focuses on approaching local and national governments, the United Nations system, the international Red Cross movement and systems related to other international organizations that can help animals, often in surprising ways. The reader will learn the rules of "diplomatic protocol", and much about the rules and procedures of major international bodies. To provide balance and real world relevance, the guide draws on a compilation of the author's extensive activities across a range of development, animal welfare, emergency management and climate issues in government and in the NGO world, as well as interviews with scholars and officials from NGOs, diplomatic missions, the United Nations, the Red Cross, governments and corporations.

The Painted Stork - Ecology and Conservation (Hardcover, 2011 ed.): A. J Urfi The Painted Stork - Ecology and Conservation (Hardcover, 2011 ed.)
A. J Urfi
R2,956 Discovery Miles 29 560 Ships in 10 - 15 working days

The book will cover the entire range of the Painted Stork--beyond its stronghold in India and Sri Lanka to other countries--E Asia as well. For the sake of comparison, relevant information will be included about the other species of storks--both solitary as well as colonial, of Asia, as well as those in other parts of the world. Certainly plenty of references will be made about the work done on the American Wood Stork.

Studies are underway in order to better understand the role of the monsoon rains on the nesting pattern of Painted Stork, besides attempting a review of the global status of the species. The former is likely to be of interest in augmenting our understanding about how global climate change is going to affect birds across India and the second is likely to raise interesting points about the distribution of species and their ranges. Both these studies will be carried through 2009 and should hopefully be included in the proposed book.

Naturally, the focused interest in field research on the Painted Stork has resulted in accumulation of considerable information on this particular species, which is beyond the information contained on some standard Indian and international works and ornithological texts.

The author hopes to include the entire spread of information of this species--from its systematics, evolution, distribution, ecology to its role in human culture as well as its association with mythologies. In other words, topics have not been restricted to the areas of the author s research but have spilled over into areas of anthropology, ecology, conservation, etc. "

Bird Monitoring Methods - A manual of techniques for key UK species (Paperback): Gillian Gilbert, David W. Gibbons, Julianne... Bird Monitoring Methods - A manual of techniques for key UK species (Paperback)
Gillian Gilbert, David W. Gibbons, Julianne Evans
R1,398 Discovery Miles 13 980 Ships in 12 - 17 working days

First published by the RSPB in 1998, this book is a practical guide to surveying and monitoring techniques for use in the breeding season - in assessing breeding success as well as population levels - and during the winter. It gives instructions for more than 120 UK bird species, mainly those of conservation concern. Methods used in the UK's main national bird monitoring schemes are also outlined with advice on how to participate in them. In addition, the publication provides advice on the reliability of the methods, sampling, statistics and species protection. An essential reference for all involved in bird monitoring programmes. This is a reprint edition of 1901930033 published in 1998.

The Future of Fisheries Science in North America (Paperback, Softcover reprint of hardcover 1st ed. 2009): Richard J. Beamish,... The Future of Fisheries Science in North America (Paperback, Softcover reprint of hardcover 1st ed. 2009)
Richard J. Beamish, Brian J. Rothschild
R4,626 Discovery Miles 46 260 Ships in 10 - 15 working days

Fisheries science in North America is changing in response to a changing climate, new technologies, an ecosystem approach to management and new thinking about the processes affecting stock and recruitment. Authors of the 34 chapters review the science in their particular fields and use their experience to develop informed opinions about the future. Everyone associated with fish, fisheries and fisheries management will find material that will stimulate their thinking about the future. Readers will be impressed with the potential for new discoveries, but disturbed by how much needs to be done in fisheries science if we are to sustain North American fisheries in our changing climate. Officials that manage or fund fisheries science will appreciate the urgency for the new information needed for the stewardship of fish populations and their ecosystems. Research organizations may want to keep some extra copies for a future look back into the thoughts of a wide range of fisheries professionals. Fisheries science has been full of surprises with some of the surprises having major economic impacts. It is important to minimize these impacts as the demand for seafood increases and the complexities of fisheries management increase.

Tagging and Tracking of Marine Animals with Electronic Devices (Paperback, Softcover reprint of hardcover 1st ed. 2009):... Tagging and Tracking of Marine Animals with Electronic Devices (Paperback, Softcover reprint of hardcover 1st ed. 2009)
Jennifer L. Nielsen, Haritz Arrizabalaga, Nuno Fragoso, Alistair Hobday, Molly Lutcavage, …
R5,816 Discovery Miles 58 160 Ships in 10 - 15 working days

The 2nd international tagging and tracking symposium was held in San Sebastian, Spain, in October 2007, seven years after the first symposium was held in Hawaii in 2000 (Sibert and Nielsen 2001). In the intervening seven years, there have been major advances in both the capability and reliability of electronic tags and analytical approaches for geolocation of tagged animals in marine habitats. Advances such as increased data storage capacity, sensor development, and tag miniaturization have allowed researchers to track a much wider array of marine animals, not just large and charismatic species. Importantly, data returned by these tags are now being used in population analyses and movement simulations that can be directly utilized in stock assessments and other management applications.

Papers in this volume are divided into three sections, the first describing insights into behavior achieved using acoustic, archival, and novel tags, the second reporting on advances in methods of geolocation, while the final section includes contributions where tag data have been used in management of marine species. Accurate documentation of animal movements and behaviors in critical marine habitats are impossible to obtain with other technologies. The management and conservation of marine species are critical in today's changing ocean environment and as electronic tags become more accurate and functional for a diversity of organisms their application continues to grow, setting new standards in science and technology.

Sustaining Young Forest Communities - Ecology and Management of early successional habitats in the central hardwood region, USA... Sustaining Young Forest Communities - Ecology and Management of early successional habitats in the central hardwood region, USA (Hardcover, Edition.)
Cathryn Greenberg, Beverly Collins, Frank Thompson III
R4,526 Discovery Miles 45 260 Ships in 10 - 15 working days

This edited volume addresses a rising concern among natural resource scientists and management professionals about decline of the many plant and animal species associated with early-successional habitats, especially within the Central Hardwood Region of the USA. These open habitats, with herbaceous, shrub, or young forest cover, are disappearing as abandoned farmland, pastures, and cleared forest patches return to forest. There are many questions about "why, what, where, and how" to manage for early successional habitats. In this book, expert scientists and experienced land managers synthesize knowledge and original scientific work to address questions on such topics as wildlife, water, carbon sequestration, natural versus managed disturbance, future scenarios, and sustainable creation and management of early successional habitat in a landscape context.

Wetlands - Integrating Multidisciplinary Concepts (Paperback, Edition.): Ben A. LePage Wetlands - Integrating Multidisciplinary Concepts (Paperback, Edition.)
Ben A. LePage
R1,557 Discovery Miles 15 570 Ships in 10 - 15 working days

The science of wetlands and our understanding of these complex ecosystems have improved considerably. The emergence of multidisciplinary strategies is providing new opportunities and innovative approaches to address issues such as climate change and coastal protection. This book, with contributions from 19 specialists from academia, government, and industry, provides a trans-disciplinary approach to the understanding wetlands science, drawing together a wide range of expertise. Topics covered include the physical aspects that shape different wetlands around the world, as well as wetlands ecology, regulation, policy, and related social and economic issues.

Featuring contributions from some of the world's leading wetlands researchers and practitioners, this book provides an invaluable resource for undergraduate and post-graduate training in all aspects of wetlands management, conservation, and construction. It is also a useful auxiliary text for researchers working across disciplines in fields such as wetlands science, law, landscape architecture, environmental engineering, conservation ecology, and related disciplines.

"

Predictive Species and Habitat Modeling in Landscape Ecology - Concepts and Applications (Hardcover, Edition.): C. Ashton Drew,... Predictive Species and Habitat Modeling in Landscape Ecology - Concepts and Applications (Hardcover, Edition.)
C. Ashton Drew, Yolanda F. Wiersma, Falk Huettmann
R6,565 Discovery Miles 65 650 Ships in 10 - 15 working days

Most projects in Landscape Ecology, at some point, define a species-habitat association. These models are inherently spatial, dealing with landscapes and their configurations. Whether coding behavioral rules for dispersal of simulated organisms through simulated landscapes, or designing the sampling extent of field surveys and experiments in real landscapes, landscape ecologists must make assumptions about how organisms experience and utilize the landscape. These convenient working postulates allow modelers to project the model in time and space, yet rarely are they explicitly considered. The early years of landscape ecology necessarily focused on the evolution of effective data sources, metrics, and statistical approaches that could truly capture the spatial and temporal patterns and processes of interest. Now that these tools are well established, we reflect on the ecological theories that underpin the assumptions commonly made during species distribution modeling and mapping. This is crucial for applying models to questions of global sustainability.

Due to the inherent use of GIS for much of this kind of research, and as several authors research involves the production of multicolored map figures, there would be an 8-page color insert. Additional color figures could be made available through a digital archive, or by cost contributions of the chapter authors. Where applicable, would be relevant chapters GIS data and model code available through a digital archive. The practice of data and code sharing is becoming standard in GIS studies, is an inherent method of this book, and will serve to add additional research value to the book for both academic and practitioner audiences."

When do fishes become juveniles? (Paperback, Softcover reprint of the original 1st ed. 1998): G. H. Copp, Vladimir Kovac, K.... When do fishes become juveniles? (Paperback, Softcover reprint of the original 1st ed. 1998)
G. H. Copp, Vladimir Kovac, K. Hensel
R4,542 Discovery Miles 45 420 Ships in 10 - 15 working days

Metamorphosis and the transition from larvae or embryos to juveniles in fishes are important in order to answer, for example, questions about: (1) life-history styles and their modifications in evolutionary perspective and within current environmental demands; (2) the development and application of fisheries recruitment models, (3) the use of ontogenetic scales for interspecific comparisons, (4) the identification of ontogenetic shifts in resource use, and (5) the discovery of evolutionary interrelationships of species or genera. This volume is dedicated to recent studies and reviews of existing knowledge on this insufficiently-addressed area of ichthyology. Most of the papers in this volume were presented in Bratislava, Slovakia, at the 1st International Workshop of the Fish Ontogeny Network of Europe (FONE) in September 1997, a meeting sponsored in part by the European Commission. This volume emphasizes an integrated approach to the study of fish ontogeny, which is a process during which one event is related to another and everything is related to everything else, encompassing physiology, morphology, behaviour and niche. Within this comprehensive perspective, the papers in this volume are grouped along four major themes: reflections on early ontogeny and metamorphosis, organism-environment relationships, ontogeny of predator-prey interactions, and behaviour and ontogeny. Among other issues, the papers consider topics such as whether one can identify when fish metamorphosis ends, whether the larva period begins with hatching or with the onset of exogenous feeding, whether fish ontogeny is saltatory' or gradual', and whether larvae are eliminated in some fishes with direct development. The keynote paper of this volume reviews the main topics within contemporary paradigms and the final paper concludes that the onset of the juvenile period can be identified in some species, but precision remains problematic, emphasizing the need for further research in this dynamic area of fish biology.

Ecological Effects of Water-level Fluctuations in Lakes (Paperback, Softcover reprint of hardcover 1st ed. 2008): Karl M.... Ecological Effects of Water-level Fluctuations in Lakes (Paperback, Softcover reprint of hardcover 1st ed. 2008)
Karl M. Wantzen, Karl-Otto Rothhaupt, Martin Moertl, Marco Cantonati, Laszlo G.-Toth, …
R5,764 Discovery Miles 57 640 Ships in 10 - 15 working days

Most aquatic ecosystems have variable water levels. These water-level fluctuations (WLF) have multiple effects on the organisms above and below the waterline. Natural WLF patterns in lakes guarantee both productivity and biodiversity, while untimely floods and droughts may have negative effects. Human impacts on WLF have led to a stabilization of the water levels of many lakes by hydraulic regulation, untimely drawdown due to water use, or floods due to water release from hydropower plants in the catchments.

This book provides a first review in this field. It presents selected papers on the ecological effects of WLF in lakes, resulting from a workshop at the University of Konstanz in winter 2005. Issues addressed here include the extent of WLF, and analyses of their effects on different groups of biota from microorganisms to vertebrates. Applied issues include recommendations for the hydrological management of regulated lakes to reduce negative impacts, and a conceptual framework is delivered by an extension of the floodpulse concept for lakes. Current impacts on water use, including increasing demands on drinking and irrigation water, hydropower etc., and climate change effects on WLF make this book an essential resource for aquatic ecologists, engineers, and decision-makers dealing with the management of lake ecosystems and their catchments.

Essential Fish Habitat Mapping in the Mediterranean (Paperback, Softcover reprint of hardcover 1st ed. 2008): Vasilis D.... Essential Fish Habitat Mapping in the Mediterranean (Paperback, Softcover reprint of hardcover 1st ed. 2008)
Vasilis D. Valavanis
R4,549 Discovery Miles 45 490 Ships in 10 - 15 working days

Proper designation of Essential Fish Habitat (EFH) is a highly important spatial measure in any management of fishery resources. EFH is defined as those waters and substrates necessary to fish for spawning, breeding, feeding, or growth to maturity, a definition that includes the physical, chemical and biological properties of marine areas and the associated sediment and biological assemblages that sustain fish populations throughout their full life cycle.

This book presents latest advances in EFH mapping and modelling and introduces the environmental approach to EFH identification through the combined use of latest technologies and advanced techniques, such as Remote Sensing, Geographic Information Systems and Spatial Statistics.

The contents of this book include overviews and comparisons of different approaches on species habitat modelling, methods to identify teleconnection patterns between large-scale meteo-oceanic phenomena and local environmental variation, and EFH maps for cephalopod, shrimp, hake, anchovy, sardine, and swordfish resources in the Mediterranean. The aims of this book are to provide accumulated knowledge on marine species essential habitat mapping and to be a source for further developments in the important topic of marine resource management.

Aquaculture, Innovation and Social Transformation (Paperback, Softcover reprint of hardcover 1st ed. 2008): Keith Culver, David... Aquaculture, Innovation and Social Transformation (Paperback, Softcover reprint of hardcover 1st ed. 2008)
Keith Culver, David Castle
R4,504 Discovery Miles 45 040 Ships in 10 - 15 working days

Keith Culver and David Castle Introduction Aquaculture is at the leading edge of a surprisingly polarized debate about the way we produce our food. According to the United Nations Food and Agriculture Organization, aquaculture production has increased 8. 8% per year since 1970, far surpassing productivity gains in terrestrial meat production at 2. 8% in the same period (FAO 2007). Like the 'green revolution' before it, the 'blue revolution' in aquaculture promises rapidly increased productivity through technology-driven - tensi?cation of aquaculture animal and plant production (Costa-Pierce 2002; The Economist 2003). Proponents of further aquaculture development emphasize aq- culture's ancient origins and potential to contribute to global food security d- ing an unprecedented collapse in global ?sheries (World Fish Center; Meyers and Worm 2003; Worm et al. 2006). For them, technology-driven intensi?cation is an - dinary and unremarkable extension of past practice. Opponents counter with images of marine and freshwater environments devastated by intensive aquaculture pr- tices producing unsustainable and unhealthy food products. They view the promised revolutionasascam, nothingmorethanclever marketingbypro?t-hungry ?shfa- ers looking for ways to distract the public from the real harms done by aquaculture. The stark contrast between proponents and opponents of modern aquaculture recalls decades of disputes about intensive terrestrial plant and animal agriculture, disputes whose vigor shows that the debate is about much more than food production (Ruse and Castle 2002).

Fish and Diadromy in Europe (ecology, management, conservation) (Paperback, Softcover reprint of hardcover 1st ed. 2008):... Fish and Diadromy in Europe (ecology, management, conservation) (Paperback, Softcover reprint of hardcover 1st ed. 2008)
Sylvie Dufour, Etienne Prevost, Eric Rochard, Patrick Williot
R4,491 Discovery Miles 44 910 Ships in 10 - 15 working days

Most of the diadromous fish of the world have decreased in distribution and abundance since the beginning of the twentieth century. They are now threatened, and important conservation issues arise. The causes of these trends vary among species and basins but regional human impact (damming, pollution, fisheries) and global change (climate) are suspected to be responsible for these difficulties. This book contains selected papers from an international symposium organised by the Diadfish network held in Bordeaux (France) in 2005. Readers will find up-to-date information on the ecology, ecotoxicology and physiology of several diadromous species (Atlantic salmon, shads, lampreys, eels) and this whole group in Europe. Main impacts are also documented and analysed in case studies, and solutions or remediation actions are presented.

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Alastair Fothergill, Keith Scholey, … Hardcover  (2)
R857 R716 Discovery Miles 7 160
Unfair Game - An Expose Of South…
Michael Ashcroft Paperback R348 Discovery Miles 3 480
The Nature of Spring
Jim Crumley Paperback R320 R263 Discovery Miles 2 630
The Elephants of Thula Thula - Finding…
Françoise Malby-Anthony Paperback R299 R234 Discovery Miles 2 340
The Trials Of Life - A Natural History…
David Attenborough Paperback R430 R344 Discovery Miles 3 440
Zulu Bird Names And Bird Lore
Adrian Koopman Paperback R560 R437 Discovery Miles 4 370
Rewilding Africa - Restoring The…
Grant Fowlds, Graham Spence Paperback  (2)
R330 R264 Discovery Miles 2 640

 

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