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Une sélection de 110534 livres sur la Nature
Catégorie "eau" : 2792 livres  Top -5-6-7-8-9-10-11-12-13
| British Saltmarshes
de (Ed. Linnean Society of London) Isbn : 0950620769
54.29 € / 356.12 FF
This book is listed as Paperback - it is Hardback. |
| The Arctic Sea Ice Ecosystem
de I.A. Melnikov (Ed. Taylor & Francis Ltd) Isbn : 2919875043
99.99 € / 655.89 FF
This book is dedicated to the study of the composition, structure and dynamics of the Artic sea ice ecosystem. It considers the permanent Artic sea ice cover as an integral steady-state ecological system. Detailed descriptions are given of time-scale characteristics, physical and chemical ice properties, and the species composition of sea-ice-bio data. The ecological mechanisms which govern the ecosystem on both the vertical and lateral scales are discussed, including the function of microcommunities during sea ice evolution.The Arctic Ocean is a major component of the world's atmosphere ocean system and within this ocean, sea ice is the key dominant environmental feature. This 3 to 5-meter thick perenial sea ice cover affects the magnitude of both heat and matter fluxes from the atmosphere and supports a unique and tightly coupled biological community; the Artic sea ice ecosystem. |
| Coastal Stabilization
de Richard Silvester, John C. Hsu (Ed. World Scientific Publishing Co Pte Ltd) Isbn : 9810231377
79.65 € / 522.47 FF
This book discusses coastal defense measures, which have not improved in the past few decades, and better alternatives. It emphasizes on the existence of stable bays in coastal geomorphology and their use in coastal stabilization. The conventional measures for saving beaches, such as seawalls, groins, offshore breakwaters, and renourishment, are discussed in detail, followed by an alternative known as headland control. Many types of coast, and the respective defense measures, are discussed, especially for eroding beaches downcoast of harbors with long breakwaters. The formation of offshore bars during storms is examined and the design of stable recreational beaches is demonstrated. Practical design problems are discussed in all cases. Many issues requiring attention in coastal engineering are also outlined. JA Majors Book Info Provides a review of techniques available for the problems of wave propagation in regions with uneven beds as they are encountered in coastal areas. Part I covers linear wave propagation, and Part II covers nonlinear wave propagation. DLC: Coastal engineering. |
| Biodiversity
de Christian Leveque, Jean-Claude Mounolou (Ed. John Wiley & Sons Ltd) Isbn : 0470849568
99.99 € / 655.89 FF
The title provides an overview of the current knowledge about the diversity of the living world and the various problems associated with its conservation and sustainable use. Covering both the fundamentals of the subject, along with the latest research, Biodiversity presents key conservation issues within a framework of global case studies. Starting with a summary of the concept of biodiversity, the text then explores such subjects as species richness, ecological systems, the consequences of human activities, diversity and human health, genetic resources, biotechnology and conservation. Comprehensive introduction to key issues surrounding the study of biodiversity. Extensive bibliography and references to numerous relevant websites. Introduces current research in the field within a framework of useful case studies. JA Majors Book Info Text provides an overview of the current knowledge about the diversity of the living world and the various problems associated with its conservation and sustainable use. English translation of the original text in French, Biodiversite, Dynamique Biologique et Conservation, c2001. Softcover, hardcover available from the publisher. Voir l'ensemble des Descriptions du produit |
| Optical Properties and Remote Sensing of Multicomponental Water Bodies
de Helgi Arst (Ed. Springer-Verlag Berlin and Heidelberg GmbH & Co. K) Isbn : 354000629X
99.99 € / 655.89 FF
The text covers the problems concerning optical properties and remote sensing of turbid and surface-polluted oceans and lakes. In four chapters Helgi Arst compares remote sensing data with data collected from similar examination of clean waters.Chapter 1 provides an overview of the main radiative and remote sensing characteristics and provides discussion on the properties of optically active substances (OAS) in the water and their variability and concentration drawing on original data obtained in the Baltic Sea region. Chapter 2 focuses on the investigation of the influence of surface oil slicks on the reflection and absorption of solar radiation for both calm and ruffled sea surfaces. A model is provided for determining the temperature and the reflected component in upwelling rough seas.Chapter 3 provides remote sensing results obtained mainly for the Baltic Sea region, including some lakes. Correlations between the concentrations of OAS, water transparency and total remote sensing reflectance are investigated. Chapter 4 deals with subsurface irradiance and optical classification of turbid waters. This chapter analyses the different criteria of the euphotic depth drawing on a semi-empirical model for the estimation of underwater light scattering. The conclusion provides discussion on the results obtained. |
| Biogeochemistry of Forested Catchments in a Changing Environment: A German Case Study
de (Ed. Springer-Verlag Berlin and Heidelberg GmbH & Co. K) Isbn : 3540209735
99.99 € / 655.89 FF
The stability of forest ecosystems is affected by changes of environment conditions, like by increasing temperatures, increasing atmospheric CO2 and decreasing deposition rates of nutrients and acidity. This volume integrates the results of long term interdisciplinary ecosystem research at two forested watersheds in Germany with special emphasis on the biogeochemistry of carbon, dissolved organic matter and mineral elements in response to changing environmental conditions and management. Despite the reduction in acidic deposition, forest ecosystems are still threatened by soil acidification, nutrient depletion and eutrophication and criteria of sustainability are not yet achieved. The results highlight the complex interactions between vegetation, animals and soils in terrestrial ecosystems that are triggered by changes in environmental conditions. |
| Biology of the Hard Clam
de (Ed. Elsevier Science Ltd) Isbn : 0444819088
99.99 € / 655.89 FF
The hard clam, Mercenaria mercenaria, is an important commercial, recreational and ecological inhabitant of coastal bays along the east and gulf coasts of the United States. This title represents the first state of the art summary of existing knowledge of the hard clam by experts in various disciplines. Containing a compendium of literature on the hard clam, comprehensive chapters on various aspects of its biology as well as summaries of knowledge including the gray literature on this economically important species, this volume represents a comprehensive source of biological information for managers and researchers interested in shallow marine and estuarine ecosystems. Research students and managers charged with maintaining coastal ecosystems will also find a wealth of background material. The first synthesis of available information on the mercenaria mercenaria, this title is a response to the needs of individuals involved in hard clam aqu |
| Encyclopedia of Ocean Sciences With Online Version
de (Ed. Academic Press Inc) Isbn : 012227430X
99.99 € / 655.89 FF
The Encyclopedia of Ocean Sciences is the most current, authoritative, and comprehensive resource on the science of the oceans. This ambitious work includes contributions from leading scientists around the world on the physical processes that drive the oceans and the chemical, biological, and geological disciplines. The Encyclopedia also covers ancillary topics such as ocean technology, law of the oceans, global programs, marine policy, the use of the oceans for food and energy, and the impact of pollution and climate changes. The many different methods used to study the oceans are covered, from ship-based systems to satellite remote sensing.Users will enjoy easy access to more than 400 articles, each approximately 3000-4000 words in length with further reading lists and extensive cross referencing. Each article provides comprehensive coverage of a particular topic, and is designed for a wide audience of students, academics, researchers, and professionals. The articles are written at a level that allows undergraduate students to understand the material, while providing active researchers with the latest technical information.Also available online on ScienceDirect. Voir l'ensemble des Descriptions du produit |
| Early Middle Pleistocene Transitions: The Land-Ocean Evidence
de (Ed. Geological Society Publishing House) Isbn : 1862391815
99.99 € / 655.89 FF
The Early-Middle Pleistocene transition (around 1.2 to 0.5 Ma) marks a profound shift in Earth's climate state. Low-amplitude 41 ka climate cycles, dominating the earlier part of the Pleistocene, gave way progressively to a 100 ka rhythm of increased amplitude that characterizes our present glacial-interglacial world. This volume assesses the biotic and physical response to this transition both on land and in the oceans: indeed it examines the very nature of Quaternary climate change. Milankovitch theory, palaeoceanography using isotopes and microfossils, marine organic geochemistry, tephrochronology, the record of loess and soil deposition, terrestrial vegetational change, and the migration and evolution of hominins as well as other large and small mammals, are all considered. These themes combine to explore the very origins of our present biota. |
| Elements of Marine Ecology
de R.V. Tait, Dr. Frances Dipper (Ed. Butterworth-Heinemann Ltd) Isbn : 0750620889
44.95 € / 294.85 FF
The broad definition of ecology is the study of organisms in relation to their surroundings. This book presents marine ecology as a coherent science, providing undergraduate students with an essential foundation of knowledge in the structure and functioning of marine ecosystems. The fourth edition has been thoroughly revised and updated to meet the needs of today's courses. A new chapter 'Human impact on the marine environment' focuses on issues such as marine pollution, global warming, ocean management, marine nature reserves, and the effects of fisheries and aquaculture. New material has also been added on deep-sea hydrothermal vents and coral reefs, features such as El Nino, and ocean processes including the microbial loop, dissolved organic matter (DOM), and dimethyl sulphide (DMS).A highly accessible survey for undergraduate studentsA classic text completely revised and updated by a new authorA new chapter covers the topical area of human impacts on the marine environment Voir l'ensemble des Descriptions du produit |
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lundi 10 janvier 2011 à 08:19:26
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