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Books > Earth & environment > Earth sciences > The hydrosphere > Oceanography (seas)

Hydrodynamics, Sediment Transport and Light Extinction Off Cape Bolinao, Philippines (Paperback): Paul Cadelina Rivera Hydrodynamics, Sediment Transport and Light Extinction Off Cape Bolinao, Philippines (Paperback)
Paul Cadelina Rivera
R2,573 R2,391 Discovery Miles 23 910 Save R182 (7%) Ships in 12 - 17 working days

Observational and numerical modelling studies of the hydrodynamics, sediment transport, and light extinction were undertaken in the marine environment around Cape Bolinao in the Lingayen Gulf (NW Philippines). This text reports on the results of these studies, and offers conclusions.

Physical Oceanography of the Adriatic Sea - Past, Present and Future (Hardcover, 2002 ed.): Benoit Cushman-Roisin, Miroslav... Physical Oceanography of the Adriatic Sea - Past, Present and Future (Hardcover, 2002 ed.)
Benoit Cushman-Roisin, Miroslav Gacic, Pierre-Marie Poulain, Antonio Artegiani
R5,074 Discovery Miles 50 740 Ships in 12 - 17 working days

Because of its centrallocation in the Old World, the Adriatic Sea has long been explored and studied. Modern methods of investigation, however, have accelerated the pace of study during the last decade. These are the ADCP currentmeter, satellite imagery, drifter technology, and, last but not least, the computer with its arsenal of tools for data analysis and model simulations. As a result of this renaissance, the Adriatic Sea and its sub-basins are currently the object of intensified scrutiny by a number of scientific teams, in Europe and be yond. Questions concerning the mesoscale variability that dominates regional motions, the seasonal circulation of the sea, and its long-term climatic role in the broader Mediterranean, have become topics of lively discussions. The time was ripe then when an international workshop dedicated to the physical oceanography of the Adriatic Sea was convened in Trieste on 21-25 September 1998. Its objectives were to assess the current knowledge of the oceanography of the Adriatic Sea, to review the newly acquired observations, to create syn ergy between model simulations and observations, and to identify directions for future Adriatic oceanography. This book, however,is not the mere proceedings of the workshop. It was written as a monograph synthetizing the current knowledge of the physical oceanography of the Adriatic Sea, with the hope that it will serve as a reference to anyone interested in the Adriatic. The book also identifies topics in need of additional inquiry and proposes research directions for the next decade.

Love Letters to Water - An Anthology (Hardcover): Claudiu Murgan Love Letters to Water - An Anthology (Hardcover)
Claudiu Murgan
R939 R801 Discovery Miles 8 010 Save R138 (15%) Ships in 10 - 15 working days
SDG 14: Life Below Water - A Machine-Generated Overview of Recent Literature (Hardcover, 1st ed. 2023): Sergio Rossi SDG 14: Life Below Water - A Machine-Generated Overview of Recent Literature (Hardcover, 1st ed. 2023)
Sergio Rossi
R4,442 Discovery Miles 44 420 Ships in 12 - 17 working days

This book focuses, in seven chapters, on the perspectives and solutions that different research groups offer to try to address problems related to SDG 14: Life Below Water. The different objectives developed in SDG 14 are treated independently, with an attempt to give a global vision of the issues. The mechanism used to select the book's content was through an Artificial Intelligence program, choosing articles related to the topics by means of keywords. The program selected those articles, and those that were not related to the topic or did not focus on SDG 14 were discarded by a subject matter expert. Obviously, the selection was partial and the entire subject is not covered, but the final product gives a very solid idea of how to orient ourselves to delve deeper into the topic of SDG 14 using published chapters and articles. The AI program itself selected the text of these contributions to show the progress in different topics related to SDG 14. This mode of operation will allow specialists (and non-specialists) to collect useful information for their specific research purposes in a short period of time. At a time when information is essential in order to move quickly by providing concrete answers to complex problems, this type of approach will become essential for researchers, especially for a subject as vast as SDG 14.

Regional Satellite Oceanography (Hardcover): Serge Victorov Regional Satellite Oceanography (Hardcover)
Serge Victorov
R3,450 Discovery Miles 34 500 Ships in 12 - 17 working days

This work addresses the whole range of problems relating to the application of satellite technology to studies of regional seas and sea phenomona - the Gulf Stream, the Kuroshia Current - and coastal zones. It argues that to emphasize global applications is to fail to take into account fundamental idiosyncracies specific to the regional perspective. In addition, it describes implementation techniques - data gathering; in situ data assurance, algorithms for parameter retrieval; data storage; and data output.; The book contains satellite imagery and incorporates case studies from areas such as the Baltic and the Black Sea.

Molecular Biological Technologies for Ocean Sensing (Hardcover, 2012 ed.): Sonia M. Tiquia-Arashiro Molecular Biological Technologies for Ocean Sensing (Hardcover, 2012 ed.)
Sonia M. Tiquia-Arashiro
R2,937 Discovery Miles 29 370 Ships in 10 - 15 working days

The development of ocean sensors remains a ripe area for future investigation from science, policy and systemsengineering standpoints. Clearly, there are many options forrealizing integrated molecular analytical sensing systems. The definition of key target molecules, detection methodsand signal transduction models largely remain to be determined.Moreover, there remains ahuge challenge of merging this new class of instrument with different deployment platforms, and supplying necessarypower and data telemetry infrastructure for their operation. Molecular Biological Technologies for Ocean Sensing features methods papers on the application of ecogenomic sensors on autonomous platforms in the ocean. Topics include the use of ecogenomic sensors as a tool in whole-cell and cell-free based detection and monitoring a suite of pathogens and biotoxins that are of public health concern; documenting species diversity, evolution and metabolic function; identification and quantification of aquatic organisms; and inferring metabolic potential and activities of microorganisms in the ocean. Each contribution focuses on the (1) functional requirements for detecting specific microorganisms and the genes that they harbor and express;(2) examples of research activities that take advantage of molecular detection technologies;(3) some of the challenges faced when projecting development and use of novel instruments that will utilize molecular techniques onboard autonomous platforms;and future directions. Bringing these advancements on autonomous platforms, monitoring required sample collection and processing schemes will differ from those currently used (i.e. biomedical diagnostics). This book is the first of its kind to compile current technologies for studying organisms in situ. It will aid in transfer technology to oceanographers, ecologists, microbiologists, and environmental scientists with needs for a remote, in-water sensing capability and for integration with larger scale observatory operations. With this network in place, there is a potential to bridge the gap among regulatory agencies and academics about how this kind of technology can be used for research and monitoring purposes.

A High-Rate Virtual Instrument of Marine Vehicle Motions for Underwater Navigation and Ocean Remote Sensing (Hardcover, 2013... A High-Rate Virtual Instrument of Marine Vehicle Motions for Underwater Navigation and Ocean Remote Sensing (Hardcover, 2013 ed.)
Chrystel Gelin
R2,853 Discovery Miles 28 530 Ships in 10 - 15 working days

Dead-Reckoning aided with Doppler velocity measurement has been the most common method for underwater navigation for small vehicles. Unfortunately DR requires frequent position recalibrations and underwater vehicle navigation systems are limited to periodic position update when they surface. Finally standard Global Positioning System (GPS) receivers are unable to provide the rate or precision required when used on a small vessel. To overcome this, a low cost high rate motion measurement system for an Unmanned Surface Vehicle (USV) with underwater and oceanographic purposes is proposed. The proposed onboard system for the USV consists of an Inertial Measurement Unit (IMU) with accelerometers and rate gyros, a GPS receiver, a flux-gate compass, a roll and tilt sensor and an ADCP. Interfacing all the sensors proved rather challenging because of their different characteristics. The proposed data fusion technique integrates the sensors and develops an embeddable software package, using real time data fusion methods, for a USV to aid in navigation and control as well as controlling an onboard Acoustic Doppler Current Profiler (ADCP). While ADCPs non-intrusively measure water flow, the vessel motion needs to be removed to analyze the data and the system developed provides the motion measurements and processing to accomplish this task.

Historical Earthquakes, Tsunamis and Archaeology in the Iberian Peninsula (Hardcover, 1st ed. 2022): Manuel Alvarez... Historical Earthquakes, Tsunamis and Archaeology in the Iberian Peninsula (Hardcover, 1st ed. 2022)
Manuel Alvarez Marti-Aguilar, Francisco Machuca Prieto
R5,097 Discovery Miles 50 970 Ships in 12 - 17 working days

Research on historical earthquakes and tsunamis in the Iberian Peninsula has made great strides in recent years, from diverse scientific fields ranging from geology to archaeology. In addition to the famous earthquake and tsunami of 1755, which intensely affected the peninsula, researchers are conducting a growing number of surveys and case studies on seismic episodes and extreme wave events of possible tsunamigenic origin in Portugal and Spain during the ancient, medieval, and modern eras. However, the development of these studies has suffered due to a certain lack of communication among the different fields of research, which are focused on their own methodologies and interests. The aim of this book is to promote interdisciplinary dialogue by linking the results of the most recent research into historical earthquakes and tsunamis in Iberia from the fields of geology, history and archaeology. The volume, which devotes special attention to tsunamis and to events that occurred in the Iberian Peninsula before 1755, offers synthetic insights, updates, and case studies of maximum interest for knowledge of the historical seismology of Portugal and Spain.

Coastal Ocean Space Utilization 3 (Hardcover): R.B. Abel, S. Connell, N. Della Croce Coastal Ocean Space Utilization 3 (Hardcover)
R.B. Abel, S. Connell, N. Della Croce
R8,834 Discovery Miles 88 340 Ships in 12 - 17 working days

Arising out of the Third International Symposium held in New Jersey, this book represents the state-of-the-art in ocean management. An international group of contributors cover such topics as: regional seas and embayments; new concepts in the governance of ocean space assessment standards and issues; ocean resources and sustainable development; ocean space development; and related technologies. From the Baltic to the Caribbean, from the Adriatic to the Atlantic, the problems of ocean management are fully discussed, and proposals made to meet the challenges of the next decade. This book should be of interest and use to anyone working in coastal and ocean management.

Turbulence in the Ocean (Hardcover, 1985 ed.): Monin Turbulence in the Ocean (Hardcover, 1985 ed.)
Monin; Translated by H. Tennekes; Ozmidov
R3,028 Discovery Miles 30 280 Ships in 10 - 15 working days

Four years have elapsed since the preparation of the original Russian version of this book. This is a long time when dealing with such actively expanding fields of oceanography as research into small-scale structures and the investigation of hydro physical processes. Over this period new quick-response devices have been developed and successfully used for measurements taken in various ocean areas. Improvements in high-frequency meters used to measure hydrophysical parameters has enabled workers to obtain more accurate absolute values of the fluctuations measured by such devices. In view of this scientific progress, some of the ideas presented in this book now require additional explanation. Great care should be used in dealing with the absolute fluctuation values of hydro physical fields, since the methods used for the determination of the accuracy of the high-frequency measuring devices have been imperfect in the past. Never theless, it would appear that the results of the investigations summarized in this book have not lost their importance, and that the established laws governing small-scale pro cesses in the ocean are of a sufficiently universal nature and, as such, have not been shattered with the qualitative and quantitative advances in devices used for measurements taken in oceans. The authors feel that their work is of interest to English-speaking readers. The appearance of the English translation of the book is, to a very large extent, due to the tremendous amount of editing work brilliantly done by Prof. H. Tennekes."

Dynamics of Deepwater Riser - Theory and Method (Hardcover, 1st ed. 2022): Weiping Huang, Xuemin Wu, Juan Liu, Xinglan Bai Dynamics of Deepwater Riser - Theory and Method (Hardcover, 1st ed. 2022)
Weiping Huang, Xuemin Wu, Juan Liu, Xinglan Bai
R4,380 Discovery Miles 43 800 Ships in 10 - 15 working days

This book demonstrates various types of deepwater risers with different motion equations and boundary conditions depending on their different structural configurations. It also discusses the hydrodynamic analysis methods of different deepwater risers. It provides new force and structure models in time and frequency domains of vortex induced force, including that for a downstream riser of the tandem riser, and the rigid oscillating model for steel catenary riser. The highlights of this book are the analysis methods of the rigid oscillating mode of steel catenary riser and the coupling iteration for top-tensioned riser with pipe-in-pipe configuration. This book is interesting and useful to a wide readership in the various fields of ocean engineering and offshore oil & gas development.

YOUMARES 9 - The Oceans - Our Research, Our Future (Hardcover): Maya Bode-Dalby, Viola Liebich, Simon Jungblut YOUMARES 9 - The Oceans - Our Research, Our Future (Hardcover)
Maya Bode-Dalby, Viola Liebich, Simon Jungblut
R1,683 Discovery Miles 16 830 Ships in 10 - 15 working days
The Seashore Sticker Anthology (Hardcover): Dk The Seashore Sticker Anthology (Hardcover)
Dk
R735 R678 Discovery Miles 6 780 Save R57 (8%) Ships in 10 - 15 working days
Modular Subsea Production Systems (Hardcover, 1987 ed.): Society for Underwater Technology (Sut) Modular Subsea Production Systems (Hardcover, 1987 ed.)
Society for Underwater Technology (Sut)
R2,975 Discovery Miles 29 750 Ships in 10 - 15 working days
Complex Oceanographic Research on the Black Sea (Hardcover): Eremeev Complex Oceanographic Research on the Black Sea (Hardcover)
Eremeev
R3,859 Discovery Miles 38 590 Ships in 12 - 17 working days

This book contains articles by oceanographic researchers from the (former) USSR and presents new data on various aspects of the Black Sea. The topics include Black Sea thermohaline, hydrochemical and optical structures, the dynamics of the Main Black Sea current and deep layers, wave phenomena in shelf areas and modelling of complex marine systems. Aslo included are some experimentally derived results which allow a deeper insight into the problem of O2 and H2S coexistence in the Black Sea. The commonplace notions about the structure of the oxic/anoxic interface are critically evaluated.

Advances in the Science and Technology of Ocean Management (Hardcover): Hance Smith Advances in the Science and Technology of Ocean Management (Hardcover)
Hance Smith
R4,293 Discovery Miles 42 930 Ships in 12 - 17 working days

The last two decades have seen unprecedented developments in marine science and technology. Large scale, international long-term scientific programmes have emerged for monitoring the state of the ocean environment and the rapid development of the offshore oil industry has provided the technological means for a range of other maritime developments. The purpose of this book is to review key developments in this field. Three major themes are developed throughout the book: the key importance of technical developments in ocean management; the application of these developments to specific sea uses ranging from fish farming to the deep sea disposal of industrial waste; and the long term general issues raised - and to some extent solved - by science and technology. This book should be of interest to students and professionals involved in maritime studies, oceanography, offshore engineering and environmental science.

International Marine Mammal Law (Hardcover, 1st ed. 2020): Nikolas Sellheim International Marine Mammal Law (Hardcover, 1st ed. 2020)
Nikolas Sellheim
R2,267 Discovery Miles 22 670 Ships in 12 - 17 working days

International Marine Mammal Law is a comprehensive, introductory volume on the legal regimes governing the conservation and utilisation of marine mammals. Written as a textbook, it provides basic overviews of international conservation law, which enable the reader to understand the greater implications of governance of a specific group of species. Paired with biological information on some marine mammal species, the international regimes for whales, seals and polar bears are explored - either as part of global regimes of international environmental governance or as regimes that were specifically designed for them. The book concludes with outlooks on the future of international marine mammal law, particularly in light of Japan's withdrawal from the International Convention for the Regulation of Whaling in July 2019.

Environmental Security in the Arctic Ocean (Hardcover, 2013 ed.): Paul Arthur Berkman, Alexander N. Vylegzhanin Environmental Security in the Arctic Ocean (Hardcover, 2013 ed.)
Paul Arthur Berkman, Alexander N. Vylegzhanin
R7,249 R6,662 Discovery Miles 66 620 Save R587 (8%) Ships in 12 - 17 working days

This seminal book results from a NATO Advanced Research Workshop at the University of Cambridge with Russian co-directorship, enabling the first formal dialogue between NATO and Russia about security issues in the Arctic Ocean. Involvinginterdisciplinary participation withexperts from 17 nations, including all of the Arctic states, this workshop itself reflects progress in Arctic cooperation and collaboration. Interests now are awakening globally to take advantage ofextensive energy, shipping, fishing and tourism opportunities in theArctic Oceanas it is being transformed from a permanent sea-ice capto a seasonally ice-free sea. This environmental state-changeis introducing inherent risks of political, economic and cultural instabilities that are centralized among the Arctic states and indigenous peoples with repercussions globally. Responding with urgency, environmental security is presented asan" "integrated approach for assessing and responding to the risks as well as the opportunities generated by an environmental state-change."" In this book diverse perspectives on environmental security in the Arctic Ocean are shared in chapters from high-level diplomats, parliamentarians and government officials of Arctic and non-Arctic states; leaders of Arctic indigenous peoples organizations; international law advisors from Arctic states as well as the United Nations; directors of inter-governmental organizations and non-governmental organizations; managers of multi-national corporations; political scientists, historians and economists; along with Earth system scientists and oceanographers. Building on the" common arctic issues " of " sustainable development and environmental protection " established by the Arctic Council environmental securityoffers an holistic approachto assess opportunities and risks as well as developinfrastructure responses with law of the sea as the key" international legal framework " to " promote the peaceful uses " of the Arctic Ocean. With vision for future generations, environmental security is a path to balance national interests and common interests in the Arctic Ocean for the lasting benefit of all."

Stationing and Stability of Semi-Submersibles (Hardcover, 1986 ed.): Society for Underwater Technology (Sut) Stationing and Stability of Semi-Submersibles (Hardcover, 1986 ed.)
Society for Underwater Technology (Sut); Edited by C. Kuo
R5,758 Discovery Miles 57 580 Ships in 10 - 15 working days
Nonlinear Physical Oceanography - A Dynamical Systems Approach to the Large Scale Ocean Circulation and El Nino (Hardcover,... Nonlinear Physical Oceanography - A Dynamical Systems Approach to the Large Scale Ocean Circulation and El Nino (Hardcover, 2001 ed.)
Henk A. Dijkstra
R4,444 Discovery Miles 44 440 Ships in 12 - 17 working days

In this book, the methodology of dynamical systems theory is applied to investigate the physics of the global ocean circulation. Topics include the dynamics of the Gulf Stream in the Atlantic Ocean, the stability of the thermohaline circulation and the El NiAo/Southern Oscillation phenomenon in the Tropical Pacific. On the other hand, the book also deals with the numerical methods for applying bifurcation analysis on large dimensional dynamical systems, with thousands or more degrees of freedom, which arise through discretization of ocean models. The novel approach in understanding the phenomena of climate variability is through a systematic analysis within a hierarchy of models using these techniques. In this way, a nice overview is obtained of the relations between the results of the different models within the hierarchy. Mechanistic description of the physics of the results is provided and, where possible, links with results of state-of-the-art models and observations are sought. The reader is expected to have a background in basic incompressible fluid dynamics and applied mathematics, although the level of the text is mixed and sometimes quite introductory. Each chapter is rather self-contained and many details of derivations are provided. The book is aimed at graduate students and researchers in meteorology, oceanography, and related fields who are interested in tackling fundamental problems in dynamical oceanography and climate dynamics.

Observing the Oceans in Real Time (Hardcover, 1st ed. 2018): R. Venkatesan, Amit Tandon, Eric D'Asaro, M. A. Atmanand Observing the Oceans in Real Time (Hardcover, 1st ed. 2018)
R. Venkatesan, Amit Tandon, Eric D'Asaro, M. A. Atmanand
R5,159 Discovery Miles 51 590 Ships in 12 - 17 working days

This book provides contributions from leading experts on the integration of novel sensing technologies to yield unprecedented observations of coupled biological, chemical, and physical processes in the ocean from the macro to micro scale. Authoritative entries from experts around the globe provide first-hand information for oceanographers and researchers looking for solutions to measurement problems. Ocean observational techniques have seen rapid advances in the last few years and this book addresses the need for a single overview of present and future trends in near real time and real time. First the past, present and future scenarios of ocean observational tools and techniques are elucidated. Then this book divides into three modes of ocean observations: surface, upper ocean and deep ocean. This is followed by data quality and modelling. Collecting a summary of methods and applications, this book provides first-hand information for oceanographers and researchers looking for solutions to measurement problems. This book is also suitable for final year undergraduate students or beginning graduate students in ocean engineering, oceanography and various other engineering students (such as Mechanical, Civil, Electrical, and Bioengineering) who are interested in specializing their skills towards modern measurements of the ocean.

Perspectives on Deep-Sea Mining - Sustainability, Technology, Environmental Policy and Management (Hardcover, 1st ed. 2022):... Perspectives on Deep-Sea Mining - Sustainability, Technology, Environmental Policy and Management (Hardcover, 1st ed. 2022)
Rahul Sharma
R4,453 Discovery Miles 44 530 Ships in 12 - 17 working days

This book is a sequel to 'Deep-Sea Mining: Resource Potential, Technical and Environmental Considerations' (2017) and 'Environmental Issues of Deep-Sea Mining: Impacts, Consequences and Policy Perspectives' (2019), and aims to provide a comprehensive volume on different perspectives of deep-sea mining from specialists around the world. The work is timely, as deep-sea minerals continue to enthuse researchers involved in activities such as ascertaining their potential as alternative sources for critical metals for green energy and other industrial applications, as well as technology development for their sustainable exploration and exploitation, while addressing environmental concerns. With a steady increase in the number of contractors having exclusive rights over large tracts of seafloor in the 'Area', i.e. area beyond national jurisdictions, the International Seabed Authority, mandated with the responsibility of regulating such activities, is in the process of developing a code for exploitation of deep-sea minerals. These, coupled with growing interest among private entrepreneurs, investment companies and policy makers, underscore the need for updated information to be made available in one place on the subject of deep-sea mining. The book evaluates the potential and sustainability of mining for deep-sea minerals compared to other land-based deposits, the technologies needed for mining and processing of ores, the approach towards environmental monitoring and management, as well as the regulatory frameworks and legal challenges to manage deep-sea mining activities. The book is expected to serve as an important reference for all stakeholders including researchers, contractors, mining companies, regulators and NGOs involved in deep-sea mining.

From the Seashore to the Seafloor - An Illustrated Tour of Sandy Beaches, Kelp Forests, Coral Reefs, and Life in the... From the Seashore to the Seafloor - An Illustrated Tour of Sandy Beaches, Kelp Forests, Coral Reefs, and Life in the Ocean's Depths (Hardcover)
Janet Voight; Illustrated by Peggy Macnamara; Foreword by David Quammen
R646 Discovery Miles 6 460 Ships in 9 - 15 working days

An octopus expert and celebrated artist offer a deep dive to meet the enchanting inhabitants of the world's marine ecosystems. Have you ever walked along the beach and wondered what kind of creatures can be found beneath the waves? Have you pictured what it would be like to see the ocean not from the shore, but from its depths? These questions drive Janet Voight, an expert on mollusks who has explored the seas in the submersible Alivn that can dive some 14,000 feet below the water's surface. In this book, she partners with artist Peggy Macnamara to invite readers to share her undersea journeys of discovery. With accessible scientific description, Voight introduces the animals that inhabit rocky and sandy shores, explains the fragility of coral reefs, and honors the extraordinary creatures that must search for food in the ocean's depths, where light and heat are rare. These fascinating insights are accompanied by Macnamara's stunning watercolors, illuminating these ecosystems and other scenes from Voight's research. Together, they show connections between life at every depth-and warn of the threats these beguiling places and their eccentric denizens face.

Global Change in Atlantic Coastal Patagonian Ecosystems - A Journey Through Time (Hardcover, 1st ed. 2021): E.Walter Helbling,... Global Change in Atlantic Coastal Patagonian Ecosystems - A Journey Through Time (Hardcover, 1st ed. 2021)
E.Walter Helbling, Maite A. Narvarte, Raul A Gonzalez, Virginia E. Villafane
R4,430 Discovery Miles 44 300 Ships in 12 - 17 working days

This book provides an integrated view of Atlantic coastal Patagonian ecosystems, including the physical environment, biodiversity and the main ecological processes, together with their derived ecosystem services and anthropogenic impacts. It focuses on the key components of the aquatic ecosystem, covering the lower levels (plankton) to the top predators like large mammals and birds, before turning to human beings as consumers and shapers of coastal marine resources. The book then presents an overview of how organisms that constitute the aquatic food webs have changed through time and how they likely will soon change due to global change processes and anthropogenic pressures. In this regard it offers a wealth of information such as long-term patterns in physical / atmospheric processes, biodiversity and the distribution of marine organisms, as well as the results of experimental studies designed to understand their responses under future scenarios shaped by both climate change and anthropogenic pressures. The book also covers various aspects of the past, present and potential future relationship of human beings with Patagonian coastal environments, including the utilization of sea products, tourism, and growth of cities.

State of the World's Oceans (Hardcover, 2009 ed.): Michelle Allsopp, Stefan E. Pambuccian, Paul Johnston, David Santillo State of the World's Oceans (Hardcover, 2009 ed.)
Michelle Allsopp, Stefan E. Pambuccian, Paul Johnston, David Santillo
R2,907 Discovery Miles 29 070 Ships in 10 - 15 working days

The world's oceans cover 70% of the earth's surface and are home to a myriad of amazing and beautiful creatures. However, the biodiversity of the oceans is incre- ingly coming under serious threat from many human activities including overfi- ing, use of destructive fishing methods, pollution and commercial aquaculture. In addition, climate change is already having an impact on some marine ecosystems. This book discusses some of the major threats facing marine ecosystems by cons- ering a range of topics, under chapters discussing biodiversity (Chapter 1), fisheries (Chapter 2), aquaculture (Chapter 3), pollution (Chapter 4) and the impacts of increasing greenhouse gas emissions (Chapter 5). It goes on to explore solutions to the problems by discussing equitable and sustainable management of the oceans (Chapter 6) and protecting marine ecosystems using marine reserves (Chapter 7). Presently, 76% of the oceans are fully or over-exploited with respect to fishing, and many species have been severely depleted. It is abundantly clear that, in general, current fisheries management regimes are to blame for much of the widespread degradation of the oceans. Many policy-makers and scientists now agree that we must adopt a radical new approach to managing the seas - one that is precautionary in nature and has protection of the whole marine ecosystem as its primary objective. This 'ecosystem-based approach' is vital if we are to ensure the health of our oceans for future generations.

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