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Author: Thomas C Johnson Publisher: Routledge ISBN: 1351435329 Category : Science Languages : en Pages : 679
Book Description
The large lakes of the East African Rift Valley are among the oldest on Earth, and are vital resources for the people of their basins. They are unique among the large lakes of the world in terms of their sensitivity to climatic change, rich and diverse populations of endemic species, circulation dynamics and water-column chemistry, and long, continuous records of past climatic change. A comprehensive study of the large African lakes is long overdue. The scientific justification for such an effort is noted in the previous paragraph and is illustrated in great detail in this volume. Societal need for the sustainable utilization of these lakes offers an even more compelling reason for examination of biological food webs, water quality, and past climate variability in East Africa. The lakes provide the most important source of protein for the people of the African Rift Valley, and fish populations are shifting dramatically in response to fishing pressure, introduction of exotic species, land use impact on water quality, and perhaps climatic change. Current estimates of primary productivity, the underpinning of the food resource, are extremely crude and based on only a few spot measurements.
Author: Thomas C Johnson Publisher: Routledge ISBN: 1351435329 Category : Science Languages : en Pages : 679
Book Description
The large lakes of the East African Rift Valley are among the oldest on Earth, and are vital resources for the people of their basins. They are unique among the large lakes of the world in terms of their sensitivity to climatic change, rich and diverse populations of endemic species, circulation dynamics and water-column chemistry, and long, continuous records of past climatic change. A comprehensive study of the large African lakes is long overdue. The scientific justification for such an effort is noted in the previous paragraph and is illustrated in great detail in this volume. Societal need for the sustainable utilization of these lakes offers an even more compelling reason for examination of biological food webs, water quality, and past climate variability in East Africa. The lakes provide the most important source of protein for the people of the African Rift Valley, and fish populations are shifting dramatically in response to fishing pressure, introduction of exotic species, land use impact on water quality, and perhaps climatic change. Current estimates of primary productivity, the underpinning of the food resource, are extremely crude and based on only a few spot measurements.
Author: A.Ivan Johnson Publisher: Routledge ISBN: 1351435310 Category : Science Languages : en Pages : 682
Book Description
The large lakes of the East African Rift Valley are among the oldest on Earth, and are vital resources for the people of their basins. They are unique among the large lakes of the world in terms of their sensitivity to climatic change, rich and diverse populations of endemic species, circulation dynamics and water-column chemistry, and long, continuous records of past climatic change. A comprehensive study of the large African lakes is long overdue. The scientific justification for such an effort is noted in the previous paragraph and is illustrated in great detail in this volume. Societal need for the sustainable utilization of these lakes offers an even more compelling reason for examination of biological food webs, water quality, and past climate variability in East Africa. The lakes provide the most important source of protein for the people of the African Rift Valley, and fish populations are shifting dramatically in response to fishing pressure, introduction of exotic species, land use impact on water quality, and perhaps climatic change. Current estimates of primary productivity, the underpinning of the food resource, are extremely crude and based on only a few spot measurements.
Author: J.T. Lehman Publisher: Springer Science & Business Media ISBN: 9401714371 Category : Science Languages : en Pages : 246
Book Description
The idea for this book was born at the June 1996 meeting of the IDEAL Steering Committee in Milwaukee, Wisconsin. We had just completed a successful and stimulating special symposium during the annual meeting of the American Society for Limnology and Oceanography, and enthusiasm was running high for the production of a volume that could assemble in one place the scientific findings that were starting to emerge from East Africa. IDEAL, an International Decade for the East African Lakes, had ended one round of field investigations, many of which had been centered on Lake Victoria. As the climatologists, geologists, paleolimnologists, and biologists displayed their results and debated interpretations, it appeared that some paradigms were shifting, and that new explanations of climate history and modem processes were taking shape. The Steering Committee endorsed the production of a volume that would draw together the different research results that were emerging and which would be representative of the scope of science issues that exist within IDEAL. This book follows in the spirit of The Limnology, Climatology, and Paleoclimatology of the East African Lakes, published in 1996, but has a somewhat different purpose. The previous publication also included original science results, but it was conceived to review the state of knowledge, identify critical problems, and point to new paths of inquiry. It accompanied the development of our first Science and Implementation Plan for the East African Lakes.
Author: Eric O. Odada Publisher: Springer Science & Business Media ISBN: 0306482010 Category : Science Languages : en Pages : 578
Book Description
The Second International Symposium on the East African Lakes was held from 10-15 January 2000 at Club Makokola on the southern shore of Lake Malawi. The symposium was organized by the International Decade for the East African Lakes (IDEAL), a research consortium of African, European and North American scientists interested in promoting the investigations of African Great Lakes as archives of environmental and climatic dynamics. Over one hundred African, European and North American scientists with special expertise in the tropical lakes participated in the symposium which featured compelling presentations on the limnology, climatology, palaeoclimatology and biodiversity of the East African Lakes. It is their papers that comprise this book. The large lakes of East Africa are important natural resources that are heavily utilized by their bordering countries for transportation, water supply, fisheries, waste disposal, recreation and tourism. The lakes are unique in many ways: they are sensitive to climatic change and their circulation dynamics, water-column chemistry and biological complexity differ significantly from large lakes at higher latitudes; they have long, continuous, high resolution records of past climatic change; and they have rich and diverse populations of endemic organisms. These unique properties and the significance of the palaeolimnological records demand and attract research interest from around the world.
Author: Roger N. Scoon Publisher: Springer ISBN: 3319737856 Category : Science Languages : en Pages : 244
Book Description
This book describes the interrelationship between the spectacular geology of an area of East Africa that includes a branch of the rift valley, as well as giant freestanding ice-capped mountains and extraordinarily toxic, alkaline lakes, and some of the greatest concentrations of wildlife on Earth. It suggests that geological processes that have shaped the iconic landforms, including active volcanoes, may also be responsible for the unusually diverse speciation which characterises the region. Moreover, it is not a coincidence that important palaeoanthropological discoveries have been unearthed in the region. National parks and conservation areas have tremendous potential for geotourism and the book assists both tour guides and visitors in this regard. In addition, the book may provide a better understanding to management of the importance of geology for sustaining wildlife.
Author: Salif Diop Publisher: Springer Nature ISBN: 3030612252 Category : Technology & Engineering Languages : en Pages : 521
Book Description
The focus of this book is on the key water-related vulnerabilities to climate change in Africa, particularly in its most vulnerable areas, exploring potential management responses to such vulnerabilities. The African countries are particularly exposed and vulnerable to the negative impacts of climate change, with important impacts on water resources and hydrological systems, water availability, water resource management and sea level variations. Already, under various anthropogenic pressures, the status of water resources in Africa has been changing over the past decades, with decreasing water quality, falling groundwater levels, and variability in rainfall, both in terms of timing and intensity. Climate change will further accelerate the rate of change, affecting the ability of people and societies to respond in a timely manner. It is clear that there is no quick fix to the pressures imposed on water resources by climate change. Increasing the resilience of ecosystems and communities to extreme events such as flooding and drought, and integrating climate change risks and opportunities into development decision-making is indeed a key challenge, as much a technical climate-change one, as a political and developmental challenge. The book, in this regard, intends to contribute to the debate around climate change in relation to water resources management in Africa, and in particular inform policy decisions and actions that will improve governments’ and communities’ ability to manage the challenges of climate change and variability in relation to the aquatic ecosystems that they depend on. The knowledge collected in this book will benefit policy makers, researchers, as well as other stakeholders.
Author: Henri J. Dumont Publisher: Springer Science & Business Media ISBN: 1402097263 Category : Science Languages : en Pages : 819
Book Description
What have we learnt about the Nile since the mid-1970s, the moment when Julian Rzóska decided that the time had come to publish a comprehensive volume about the biology, and the geological and cultural history of that great river? And what changes have meanwhile occurred in the basin? The human popu- tion has more than doubled, especially in Egypt, but also in East Africa. Locally, industrial development has taken place, and the Aswan High Dam was clearly not the last major infrastructure work that was carried out. More dams have been built, and some water diversions, like the Toshka lakes, have created new expanses of water in the middle of the Sahara desert. What are the effects of all this on the ec- ogy and economy of the Basin? That is what the present book sets out to explore, 33 years after the publi- tion of “The Nile: Biology of an Ancient River”. Thirty-seven authors have taken up the challenge, and have written the “new” book. They come from 13 different countries, and 15 among them represent the largest Nilotic states (Egypt, Sudan, Ethiopia, Uganda, and Kenya). Julian Rzóska died in 1984, and most of the - authors of his book have now either disappeared or retired from research. Only Jack Talling and Samir Ghabbour were still available to participate again.
Author: Julius B. Lejju Publisher: African Books Collective ISBN: 9994455672 Category : Nature Languages : en Pages : 118
Book Description
Lake Victoria basin, an international water body that offers the riparian communities a large number of important benefits, has in the last four decades experienced drastic environmental changes, with a significant drop in its water level in the more recent years. The changes in water level have significantly affected the energy supply in the region and threatened the lives of the riparian population engaged, directly and indirectly, in subsistence and commercial fishing, and the agricultural and industrial sectors. The reduction in lake levels has attracted conflicting speculation. Environmentalists attribute it to reduced rainfall experienced in the East African region, while hydrologists blame it on environmental degradation and excessive water release through the operations of the Kiira-Nalubale hydroelectric power dams at Jinja. This research provides evidence of long-term environment changes in Lake Victoria and a contribution to the understanding of the past environmental conditions in the lake basin. It provides the history of human environment interactions, including the possible cause for the dynamics of the lake levels, giving possible options that can help to remedy and/or mitigate the environmental degradation in the region.
Author: Tomasz Szczęsny Publisher: Austin Macauley Publishers ISBN: 1398494275 Category : Science Languages : en Pages : 249
Book Description
In the eye-opening exploration, How to Curb Climate Change?, readers embark on a remarkable voyage through time to uncover the astonishing transformation of the Sahara and the Middle East, evolving from fertile landscapes into unforgiving deserts within a mere seven centuries. This captivating book takes readers on an enlightening journey, revealing the pivotal role played by Neolithic societies in shaping the global climate. With the emergence of large-scale agriculture and animal husbandry, ancient civilizations flourished, seemingly unaware of the ecological consequences of their actions. As suspicions arise regarding the rapid desertification, this thought-provoking narrative investigates the interplay between exponential population growth, abusive land use, and the alarming shift towards aridity. The initial chapters transport readers to the heart of the Neolithic era, where they bear witness to the profound influence these early inhabitants wielded over the world’s climate systems. By skilfully manipulating vegetation, they triggered permanent changes in the intensity and trajectory of prevailing moist winds, ultimately fuelling the expansion of deserts in the Northern Hemisphere. Building upon this revelatory premise, the subsequent sections of the book unveil a compelling proposal grounded in a deep understanding of Earth’s climatic mechanisms. As the spectre of global warming looms ominously, the author outlines a visionary approach to harness the power of these ongoing climate changes for the betterment of our planet. This revolutionary method revolves around directing and redirecting the flow of humid winds, ingeniously channelling them deep into the heartlands of continents. The result? A remarkable renaissance, where the deserts of the Northern Hemisphere are revitalized and transformed into lush, green landscapes once more. Challenging conventional wisdom, How to Curb Climate Change provides a wide-ranging revaluation of our relationship with the environment and acknowledging the profound impact we have on Earth’s delicate equilibrium. This remarkable book serves as an urgent call to action, reminding us of the transformative potential humanity possesses in curbing climate change and forging a sustainable future. Prepare to be inspired, enlightened, and equipped with the knowledge needed to embark on this critical journey towards global environmental restoration.
Author: Rhiannon Stephens Publisher: Duke University Press ISBN: 1478024518 Category : History Languages : en Pages : 207
Book Description
In Poverty and Wealth in East Africa Rhiannon Stephens offers a conceptual history of how people living in eastern Uganda have sustained and changed their ways of thinking about wealth and poverty over the past two thousand years. This history serves as a powerful reminder that colonialism and capitalism did not introduce economic thought to this region and demonstrates that even in contexts of relative material equality between households, people invested intellectual energy in creating new ways to talk about the poor and the rich. Stephens uses an interdisciplinary approach to write this history for societies without written records before the nineteenth century. She reconstructs the words people spoke in different eras using the methods of comparative historical linguistics, overlaid with evidence from archaeology, climate science, oral traditions, and ethnography. Demonstrating the dynamism of people’s thinking about poverty and wealth in East Africa long before colonial conquest, Stephens challenges much of the received wisdom about the nature and existence of economic and social inequality in the region’s deeper past.
Author: Thomas C Johnson
Author: Thomas C Johnson
Author: A.Ivan Johnson
Author: J.T. Lehman
Author: Eric O. Odada
Author: Roger N. Scoon
Author: Salif Diop
Author: Henri J. Dumont
Author: Julius B. Lejju
Author: Tomasz Szczęsny
Author: Rhiannon Stephens