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Books > Earth & environment > Earth sciences > The hydrosphere
In a world facing a growing water crisis, conflicts regarding water
sharing and environmental issues are expected to grow, especially
in transboundary river basins, where 40% of the world's population
lives.
Global wetlands exhibit significant differences in both hydrology and species composition and range from moss-dominated arctic peatlands to seasonally-flooded tropical floodplains. They are increasingly recognized for the important services that they provide to both the environment and human society such as wildlife and fish production, nutrient filtering, and carbon sequestration. A combination of low oxygen levels and dense plant canopies present particular challenges for organisms living in this aquatic habitat. This concise textbook discusses the universal environmental and biological features of wetland habitats, with an emphasis on wetland plants and animals and their adaptations. It also describes the functional features of wetlands - primary production, litter decomposition, food webs, and nutrient cycling - and their significance locally and globally. The future of wetlands is examined, including the potential threats of global climate change and invasive species, as well as their restoration and creation. This new edition maintains the structure and style of the first, but is fully updated throughout with new chapters on invasive species, restoration/creation, global climate change, and the value of wetlands.
A marine biologist vividly brings alive the extraordinary ecosystem of the deep ocean--a realm about which we know less than we do about the Moon--and shows how protecting rather than exploiting it will benefit mankind. "The oceans have always shaped human lives," writes marine biologist Helen Scales in her vibrant new book The Brilliant Abyss, but the surface and the very edges have so far mattered the most. "However, one way or another, the future ocean is the deep ocean." A golden era of deep-sea discovery is underway. Revolutionary studies in the deep are rewriting the very notion of life on Earth and the rules of what is possible. In the process, the abyss is being revealed as perhaps the most amazing part of our planet, with a topography even more varied and extreme than its Earthbound counterpart. Teeming with unsuspected life, an extraordinary interconnected ecosystem deep below the waves has a huge effect on our daily lives, influencing climate and weather systems, with the potential for much more--good or bad depending on how it is exploited. Currently the fantastic creatures that live in the deep--many of them incandescent in a world without light--and its formations capture and trap vast quantities of carbon that would otherwise poison our atmosphere; and novel bacteria as yet undiscovered hold the promise of potent new medicines. Yet the deep also holds huge mineral riches lusted after by many nations and corporations; mining them could ultimately devastate the planet, compounded by the deepening impacts of ubiquitous pollutants and rampant overfishing. Eloquently and passionately, Helen Scales brings to life the majesty and mystery of an alien realm that nonetheless sustains us, while urgently making clear the price we could pay if it is further disrupted. The Brilliant Abyss is at once a revelation and a clarion call to preserve this vast unseen world.
This book gives an overview of various aspects of blue carbon dynamics from each country bordering the Indian Ocean. Given the importance of the topic of blue carbon, it can be assumed that in near future, more and more researchers from the Indian Ocean countries will pursue environmental research in this domain. This book is a ready reference to all those who are interested to have a holistic understanding about the ground scenario of blue carbon in the Indian Ocean. There are many research institutes situated in the periphery of the Indian Ocean that are devoted to nurturing the new avenues of marine carbon research. Researchers and scholars interested in this domain will find this book provides a good overview, wherein all the necessary information on the status and functioning of these blue carbon ecosystems are detailed in a concise way. The book is also helpful to postgraduate students of 'marine science' or those who have a specialization in 'marine biogeochemistry' or 'chemical oceanography' to develop a basic understanding about the very concept of 'blue carbon' from the perspective of the Indian Ocean.
This book describes a comprehensive selection of ocean processes such as wave phenomena (surface, internal gravitational, and acoustic waves), the influence of surfactants and pollutants on the aquatic environment's dynamics, the models of the stratified natural environment, convective phenomena in the ocean, and the interaction of wave and convective processes. Finally, this book dedicates the last section to unsolved problems in the physics of anomalous waves. Most of the chapters present the most hegemonic theories but also they introduce the revulsive ideas based on alternative approaches. The underlying mathematical models are scientifically justified both at the physical and formal mathematical levels. In all known limiting cases lead to well-known classical results. They are in good agreement with experimental data. Several sections show the application of developed approaches to the description of natural phenomena. The book is of interest to specialists working in the field of ocean physics, as well as undergraduate and graduate students specializing in marine physics and oceanography.
Ocean Currents: Physical Drivers in a Changing World opens with a general introduction to the character, measurement, and simulation of ocean currents, leading to a physical and dynamical framework for understanding the wide variety of flows encountered in the oceans. The book comprises chapters covering distinct aspects of contrasting ocean currents: broad and slow, deep and shallow, narrow and swift, large scale and small scale, low latitudes and high latitudes, and moving in horizontal and vertical planes. Through this approach the authors cover a wide range of applications, from local to global, with considerable geographical context.
Environmental isotope and nuclear techniques provide unmatched insights into the processes governing the water cycle and its variability. This monograph presents state of the art applications and new developments of isotopes in hydrology, environmental disciplines and climate change studies. Coverage ranges from the assessment of groundwater resources in terms of recharge and flow regime to studies of the past and present global environmental and climate changes.
Diminishing water resources are becoming of increasing concern because in many countries the sources of drinking water are close to being exhausted. Therefore, there is an urgent need to study and assess the various components of global water resources, of which freshwater lakes are one of the most important. This book discusses contemporary limnological problems on a local, regional and global scale with special emphasis on the application of remote-sensing techniques to monitor lake dynamics, thermodynamics, biodynamics and water quality. An interactive approach is used to assess various processes from both the numerical modelling and observational standpoints. The authors recommend a combined use of in situ and remote-sensing data, giving a specific comparative analysis of the lakes of north-western Russia and the American Great Lakes as an illustration. The role of GIS is discussed and emphasised.
This book describes the challenges for the natural environments and local communities in the future. Among the high mountains of Africa, only Kilimanjaro, Mount Kenya, and the Rwenzori Mountains are still capped with glaciers. The retreating rate of these glaciers has accelerated, and they are expected to disappear in the near future. In the area around Mount Kenya, the precipitation is generally low, such that rainfall cannot stably supply water for farmlands and daily life. It has been revealed that the glacial meltwater has produced springs at the foot of the mountain. It is therefore important to characterize the condition of water sources near Mount Kenya for use by local people. This book discusses the relationships between the actual state of the climate and glacier shrinkage around Mount Kenya, the surrounding vegetation, soil, and water environments, and the lives of the foothill region inhabitants confronting the glacier shrinkage. This book is valuable in the contemporary age, when the assurance of a sustainable relationship between nature and mankind is critical.
About four years ago Dr. Gilbert White visited China and sowed the seeds of this project through conversations with Drs. Huang and Gong of the Chinese Academy of Sciences, and Mr. Long of the Yellow River Conservancy Commission. After some additional rounds of communications by letter, the plan for a workshop evolved and Drs. Wolman and Brush visited with Dr. Sabadell of the Nat_ional Science Foundation to begin the initial planning. In March 1987 Dr. Brush visited China and the details were worked out for the October 1987 workshop. At the outset it was recognized that the 10 American scientists and engineers ltad very Ii ttle knowledge of the Yellow River and none had ever seen it. Therefore, it became important that field trips be scheduled before the workshop to better set the stage for fruitful discussions. It was also acknowledged that the American participants could not present papers about the Yellow River per se so their offerings reflected their general knowledge of rivers using other rivers as examples. On the other hand the Chinese participants were all well into the difficult problems of harnessing the Yellow River and made their presentations accordingly. Despite these differences the subject matter was the unifying thread and cross communication was excellent.
This book deals with recent advances in coastal marine environmental management and governance. Various chapters consider new aspects of conservation, assessment of ecosystem health status, environmental survey and protection, frameworks of ocean service and governance, new applications of geo processing and GIS technology, beach management, aquaculture site selection, assessment of water quality (brine disposal and temperature dispersion from nuclear power plants), exploration and management of coastal karst, changing perceptions of dune management, advances in interpretation of sea-level indicators and real time environmental monitoring. New advances in both environmental management and governance are of the utmost importance for sustaining critical coastal marine areas. Offering such a diverse collection of works from coastal scientists around the world, who discuss many techniques and methods at the forefront of management and governance, this publication will be of interest to coastal researchers, coastal zone managers and regulatory agency personnel.
This book presents an overview of the hydrometeorological and hydrological studies and assists in tackling challenges posed by climate and land use land cover changes. The Ganga River is one of the major living streams on the planet earth and very important river system in India. This holy river is a lifeline for approximately five hundred million people. In the last few decades, River Ganges has been subjected to tremendous pressures with respect to both water quantity and water quality. This situation, already one of the alarming magnitudes, has been further provoked by hydrometeorological changes resulting in droughts, floods and reduced groundwater levels and river flows in addition to the poor river health. Thus, it is imperative to assess the various complexities and possible solutions for better management of River Ganges. This book is a valuable addition to the literature and contributes to research on River Ganges which will help better planning and management of Ganga river basin. The hydrological and hydrometeorological aspects covered in this book help practitioners, researchers, policymakers and other stakeholders.
This book is a collection of extended papers based on presentations given during the ICEC 2018 conference, held in Caen, France, in August 2018. It explores both the limitations and advantages of current models, and highlights the latest developments concerning new numerical schemes, high-performance computing, multi-physics and multi-scale methods, and better interaction with field or scale model data. Accordingly, it addresses the interests of practitioners, stakeholders, researchers, and engineers active in this field.
This book offers an ecosystem-oriented overview of the diversity, ecological role, and biotechnological applications of marine fungi as well as an in-depth introduction to the marine environment, fungal classification, and ecological principles. It also presents the latest research findings on coastal marine and oceanic ecosystems, such as mangrove, seagrass, salt marsh, algal, coral reef and benthic ecosystems. Focusing on the diversity of fungi as well as their role as symbionts, parasites and saprotrophs, the book also discusses the physiology and biotechnological applications of fungi and highlights topics of future interest. Intended for students and researchers in marine biology and microbiology, it includes detailed descriptions, illustrations, figures, tables, and exhaustive literature citations. A detailed chapter on methods used to study marine fungi, their classification and ecological principles is of particular interest to newcomers in the field.
The Arctic, the Antarctic, and the Hindu Kush-Himalayas form a trio of terrains sometimes called "the three poles". Mainly composed of rock, snow, and ice, these precious regions, which are home to many unique species such as the polar bear, the emperor penguin, and the snow leopard, contain the primary water resource of this planet and directly shape our climate. This book presents a first-ever global assessment and progressive review of the three poles and demonstrates the urgent need for their protection. Sins of the past have irrevocably harmed and threatened many of the unique qualities of these regions, and the future looks bleak with the global population forecast to reach 9 billion by 2060, and with climate change on the rise. Presented here is a wide-reaching and coherent overview of the three poles' biodiversity, habitats, and ongoing destruction. Failed protection and social targets set by the United Nations and other bodies are exposed while economic growth, unconstrained or inappropriate development, and urban sprawl are promoted unabated. Polar regions play a major role in the global agenda as they are rich in oil and other resources, marking them for contamination, overfishing, and further degradation. Tourism in the Antarctic has benefited from enlightened self-regulation, but there are signs that this is changing, too. The chapters of this book are written by experts in their fields, and their evidence leaves no doubt that we already live beyond our carrying capacity on a finite but decaying space. A global protection role model and several outlook scenarios are proposed to help set in motion polar protection priorities that are actually valid. Humanity has demonstrated through international treaties such as the Antarctic Treaty and the Madrid Protocol that we can put the interests of the planet as a whole first. This must become the norm, not the exception.
Annotated Atlas of Coastal and Marine Winds provides a quick-reference on major, prevailing near-surface wind systems, along with concise explanations of the features that cause these winds and a quick qualitative assessment. As accessibility to the most recent and complete atmospheric datasets is often limited, either because they are subscription-based or because they are available only in netCDF format, this book alleviates roadblocks by providing the major, prevailing near-surface wind systems, concise explanations, the features that cause these winds, and a qualitative assessment on the amount of moisture that such winds typically carry to coastal and marine scientists and engineers. This book will be an ideal resource on coastal and marine winds for a variety of professionals, including coastal scientists, marine scientists, and engineers who study phenomena that are affected directly by weather and climate.
This book presents the findings of recent theoretical and experimental studies of processes in the atmosphere, oceans and lithosphere, discussing their interactions, environmental issues, geology, problems related to human impacts on the environment, and methods of geophysical research. It particularly focuses on the geomechanical aspects of the production of hydrocarbons, including the laborious extraction of oils. Furthermore, it includes contributions on ecological problems of the biosphere.
Marine resources and their exploitation, recovery and economic networks they generate are here from the perspective now inevitable growing environmental constraints, policy management and technical innovation. A historical perspective shows that Ocean and its adjacent seas at all times, allowed coastal communities to adapt to a very volatile environment through many technological changes. The recent development of marine biotechnology, the discovery of a great pharmacopoeia especially in reef environments, the development of marine renewables, are examples which show that man can develop through these new technologies property and services of the ocean. But this development resources under pressure of global change requires not only taking into account technical, but also social and political. This is the price that the analysis of maritime activities will assess the sustainability and development of various economic sectors and coastal populations, faced with the objectives of a "blue growth" associated with a return to the "good state "of the marine environment.
This book introduces readers to experimental techniques of general utility that can be used to practically and reliably determine nucleation rates. It also covers the basics of gas hydrates, phase equilibria, nucleation theory, crystal growth, and interfacial gaseous states. Given its scope, the book will be of interest to graduate students and researchers in the field of hydrate nucleation. The formation of gas hydrates is a first-order phase transition that begins with nucleation. Understanding nucleation is of interest to many working in the chemical and petroleum industry, since nucleation, while beneficial in many chemical processes, is also a concern in terms of flow assurance for oil and natural gas pipelines. A primary difficulty in the investigation of gas hydrate nucleation has been researchers' inability to determine and compare the nucleation rates of gas hydrates across systems with different scales and levels of complexity, which in turn has limited their ability to study the nucleation process itself. This book introduces readers to experimental techniques that can be used to practically and reliably determine the nucleation rates of gas hydrate systems. It also covers the basics of gas hydrates, phase equilibria, nucleation theory, crystal growth, and interfacial gaseous states. Given its scope, the book will be of interest to graduate students and researchers in the field of hydrate nucleation.
Sensors are being utilized to increasing degrees in all forms of industry. Researchers and industrial practitioners in all fields seek to obtain a better understanding of appropriate processes so as to improve quality of service and efficiency. The quality of water is no exception, and the water industry is faced with a wide array of water quality issues being present world-wide. Thus, the need for sensors to tackle this diverse subject is paramount. The aim of this book is to combine, for the first time, international expertise in the area of water quality monitoring using smart sensors and systems in order that a better understanding of the challenges faced and solutions posed may be available to all in a single text.
Global environmental change (including climate change, biodiversity
loss, changes in hydrological and biogeochemical cycles, and
intensive exploitation of natural resources) is having significant
impacts on the world's oceans. This handbook advances knowledge of
the structure and functioning of marine ecosystems, and their past,
present, and future responses to physical and anthropogenic
forcing. It illustrates how climate and humans impact marine
ecosystems, providing a comprehensive review of the physical and
ecological processes that structure marine ecosystems as well as
the observation, experimentation, and modelling approaches required
for their study. Recognizing the interactive roles played by humans
in using marine resources and in responding to global changes in
marine systems, the book includes chapters on the human dimensions
of marine ecosystem changes and on effective management approaches
in this era of rapid change. A final section reviews the state of
the art in predicting the responses of marine ecosystems to future
global change scenarios with the intention of informing both future
research agendas and marine management policy.
This book explores computational fluid dynamics applied to ship hydrodynamics and provides guidelines for the future developments in the field based on the Tokyo 2015 Workshop. It presents ship hull test cases, experimental data and submitted computational methods, conditions, grids and results. Analysis is made of errors for global (resistance, sinkage, trim and self-propulsion) and local flow (wave elevations, mean velocities and turbulence) variables, including standard deviations for global variables. The effects of grid size and turbulence models are evaluated for both global and local flow variables. Detailed analysis is made of turbulence modeling capabilities for capturing local flow physics. Errors and standard deviations are also assessed for added resistance (captive test cases) and course keeping/speed loss (free running test cases) in head and oblique waves. All submissions are used to evaluate the error and uncertainty by means of a systematic verification and validation (V&V) study along with statistical investigations. |
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