Subtropical convergence regions in the southwestern Atlantic have a high biological productivity, and are important as nursery and feeding areas and as reproduction grounds for fishery stocks of subtropical and antarctic origin. This book represents the first multidisciplinary treatise of this large and complex marine ecosystem. It analyses how subtropical convergence and land-sea interactions influence the coast, and sea and their biota. Synthesizing the rapidly expanding information, it provides a comprehensive appraisal of the biological resources, an assessment of their sustainable exploitation, and an evaluation of oceanographic processes. An inventory of all marine taxa in the southwestern Atlantic is included as an appendix.
Coastal and marine ecosystems, some severely degraded, other still pristine, control rich resources of inshore environments and coastal seas of Latin America's Pacific and Atlantic margins. Conflicts between the needs of the region's nations and diminishing revenues and environmental quality have induced awareness of coastal ecological problems and motivated financial support for restoration and management. The volume provides a competent review on the structure, processes and function of 22 important Latin American coastal marine ecosystems. Each contribution describes the environmental settings, biotic components and structure of the system, considers trophic processes and energy flow, evaluates the modifying influence of natural and human perturbations, and suggests management needs. Although the focus of the book is on basic ecological research, the results have application for coastal managers.
This book incorporates twenty contributions on diverse aspects of the environmental geochemistry in tropical and sub-tropical environments, drawing together extensive original research not readily available elsewhere. Coverage includes intercontinental comparisons drawn on paleoclimatology, environmental impacts of mining and geochemistry of continetal shelf sediments.
Coastal Wetlands, Second Edition: An Integrated and Ecosystem Approach provides an understanding of the functioning of coastal ecosystems and the ecological services that they provide. As coastal wetlands are under a great deal of pressure from the dual forces of rising sea levels and the intervention of human populations, both along the estuary and in the river catchment, this book covers important issues, such as the destruction or degradation of wetlands from land reclamation and infrastructures, impacts from the discharge of pollutants, changes in river flows and sediment supplies, land clearing, and dam operations. - Covers climate change and its influence on coastal wetland form and function - Provides a fully updated and expanded resource, including new chapters on modeling, management and the impact of climate change - Contains full-color figures of wetlands and estuaries in different parts of the world
An Introduction to Global Environmental Issues presents a comprehensive and stimulating introduction to the key environmental issues presently threatening our global environment. Offering an authoritative introduction to the key topics, a source of latest environmental information, and an innovative stimulus for debate, this is an essential book for all those studying or concerned with global environmental issues. Major global environmental issues are brought into focus. Explanations of the evolution of the earth's natural systems (hydrosphere, biosphere, geosphere, ecosphere) provide an essential understanding of the scientific concepts, processes and historical background to environmental issues. Contemporary socio-economic, cultural and political considerations are explored and important conceptual approaches such as Gaian hypotheses and Chaos Theory are introduced. Human impact and management of the natural environment, and concerns for maintaining biodiversity are emphasised throughout. Specific features include: * Case studies drawn from across the world * Superb illustrations: 4-colour plate sections; a wealth of informative diagrams * Glossary of key terms, with key concepts highlighted throughout the text * Annotated guides to further reading * Chapter summaries and key points A Lecturers' Manual is available to accompany the text This 2nd Edition has been extensively revised and expanded to include many new illustrations, up-to-date data (including the latest IPCC data) and the most recent events including Khobe earthquake, French nuclear testing, the Berlin conference and the Antarctic Treaty. Sections on ecosystems, techniques, pollution, tectonics, risk and hazard mitigation, world populations, and issues of human impact and environmental management, have been particularly expanded in this new edition.
The need to understand the biological processes that are important for essential aquatic and terrestrial ecosystem function has prompted much research into the field of ecological enzymology. This book presents the two broad areas of application in a compilation of reviews by 21 international experts in their respective fields. The first explores enzymatic activities to assess the processes or mechanisms that operate in a given system, such as the rhizosphere, plant leaves and shoots, soil surfaces, and biofilms. The second considers enzymes or microbial cells as sensors to detect microbial activity and stresses due to pollution, management, or climatic change in both aquatic and terrestrial ecosystems.
This book is the result of ten years’ of scientific research carried out by the authors on Isla de los Estados. The research includes their doctoral thesis and many published scientific papers related to the island. The book is divided into two principal parts. The first part covers different social and natural aspects of this remote island and includes chapters on the scientific and historical background, physiography with topographical and hydrographical descriptions, climate and oceanographic circulation, vegetation and geology (including stratigraphy, structural geology and geological history). The second part comprises a reconstruction of the paleoenvironmental, paleoclimatic and paleogeographic history of the island from the Last Glacial Maximum to the present, correlating with other paleoecological records from the southern part of Isla Grande de Tierra del Fuego and Patagonia. This second part also includes a geomorphological chapter with a characterization of the principal erosive glacial landforms on Isla de los Estados constructed by means of morphometric analysis, inventories, maps, paleogeographic and glacial models, and a paleoecological chapter evaluating the palaeoenvironment and palaeoclimatic conditions that prevailed during the Late Pleistocene-Holocene times based on pollen and diatom analysis from three 14C-dated peat bogs and lakes. Finally, the book concludes with a review of the island’s archaeology and the relationship between the palaeoenvironmental history and human occupation of this island.
Countries around the world are adopting policies that save and conserve the environment. Five of these countries will be discussed in this learning book for fourth graders. The purpose of this book is to encourage other countries to adopt similar, or even better, policies. Educating the youth that it’s possible to save the environment gives them the theoretic background for a lifetime of decisions and positive actions.
This book contains detailed information on the physical, chemical and biological ceanographic features at various depths for all the 15 regions of the Atlantic, Pacific, Indian and Southern Oceans as categorized by the Food and Agriculture Organization, and on the commercially important marine fishes and details of fish catches in all the 15 regions of the major oceans since 1950. The book provides maximum and minimum annual mean values of various oceanographic factors at different depths and yearly average catches of major fish categories found from an analysis of the distribution of various oceanographic factors and fish catch data for oceans. It also briefly contains some of the recent studies carried out on the influence of oceanographic factors on fisheries. The work studies fisheries forecasts and also reviews factors which influence fisheries in various regions of the major oceans. The book is intended for scientists, teachers and students specializing in fishery oceanography, physical oceanography,
This report provides an overview of the current state of the coastal and marine environment in relation to the nine categories of threats outlined by the Global Programme of Action for the Protection of the Marine Environment from Land-based Activities (GPA). The report indicates that legal and institutional arrangements have been strengthened and now cover most regions of the world, but that despite these heightened efforts globally, coastal and marine ecosystems continue to deteriorate mainly because of pressures by human development. Publishing Agency: United Nations Environment Programme (UNEP).
