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Author: J. Rzóska Publisher: Springer Science & Business Media ISBN: 9401015635 Category : Science Languages : en Pages : 410
Book Description
357 Temperature . . . . . . . . . 358 Transparency and light penetration. 360 Salinity and conductivity 363 Major ions . . . . . 365 Dissolved gases and pH 371 Plant nutrients. 375 References 381 27. Phytoplankton: cOlDposition, developlDent and p- ductivity by]. F. TaIling. 385 Introduction. . . . . 385 Regional Development 385 The headwater lakes 385 a. Lake Victoria . 385 b. Lake Kioga . 387 c. Lake Albert. . 388 d. Lake Tana . . 390 The Sudan plain . 390 The Main Nile in Nubia and Egypt. 395 Limiting factors . . . . . . . . 396 Rates of photosynthetic production 397 References . . . . . 400 VI. Epilogue by ]. Rzoska 403 Authors Index . 407 Subject Index . . . . 413 The Nile in the Desert. The view encompasses more than 2000 kilometers from the river junction in the lower part of the picture to just below the Qena-Luxor bend, at the left upper end. The photograph was taken before the Aswan High Dam basin began to rise. The Red Sea and Saudi Arabia and the Ethiopian Highlands form the background. For the present state of the Dam basin see fig. 72. Courtesy of NASA. INTRODUCTION This book is an attempt to bring together information on the biology of the Nile. A big library could be filled by books on this river devoted to exploration and discovery, human history and hydrology. None has so far been written on the biology of the whole river system.
Author: J. Rzóska Publisher: Springer Science & Business Media ISBN: 9401015635 Category : Science Languages : en Pages : 410
Book Description
357 Temperature . . . . . . . . . 358 Transparency and light penetration. 360 Salinity and conductivity 363 Major ions . . . . . 365 Dissolved gases and pH 371 Plant nutrients. 375 References 381 27. Phytoplankton: cOlDposition, developlDent and p- ductivity by]. F. TaIling. 385 Introduction. . . . . 385 Regional Development 385 The headwater lakes 385 a. Lake Victoria . 385 b. Lake Kioga . 387 c. Lake Albert. . 388 d. Lake Tana . . 390 The Sudan plain . 390 The Main Nile in Nubia and Egypt. 395 Limiting factors . . . . . . . . 396 Rates of photosynthetic production 397 References . . . . . 400 VI. Epilogue by ]. Rzoska 403 Authors Index . 407 Subject Index . . . . 413 The Nile in the Desert. The view encompasses more than 2000 kilometers from the river junction in the lower part of the picture to just below the Qena-Luxor bend, at the left upper end. The photograph was taken before the Aswan High Dam basin began to rise. The Red Sea and Saudi Arabia and the Ethiopian Highlands form the background. For the present state of the Dam basin see fig. 72. Courtesy of NASA. INTRODUCTION This book is an attempt to bring together information on the biology of the Nile. A big library could be filled by books on this river devoted to exploration and discovery, human history and hydrology. None has so far been written on the biology of the whole river system.
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: Bryan R. Davies Publisher: Springer Science & Business Media ISBN: 9401732906 Category : Science Languages : en Pages : 788
Book Description
Our understanding of the ecology of running waters has come a long way during the past few years. From being a largely descriptive subject, with a few under tones concerned with such things as fisheries, pollution or control of blackflies, it has evolved into a discipline with hypotheses, such as the River Continuum Concept (Vannote et a/. 1980), and even a book suggesting that it offers opportunity for the testing of ecological theory (Barnes & Minshall 1983). However, perusal of the literature reveals that, although some of the very early studies were concerned with large rivers (references in Hynes 1970), the great mass of the work that has been done on running water has been on streams and small rivers, and information on larger rivers is either on such limited topics as fisheries or plankton, scattered among the journals, or not available to the general limnologist. The only exceptions are a few books in this series of publications, such as those on the Nile (Rz6ska 1976), the Volga (Morduckai Boltovskoi 1979) and the Amazon {Sioli 1984), and the recent compendium by Whitton (1984) on European rivers, among which there are a few that rate as large.
Author: Harco Willems Publisher: transcript Verlag ISBN: 383943615X Category : History Languages : en Pages : 371
Book Description
Although Herodot's dictum that "Egypt is a gift of the Nile" is proverbial, there has been only scant attention to the way the river impacted on ancient Egyptian society. Egyptologists frequently focus on the textual and iconographic record, whereas archaeologists and earth scientists approach the issue from the perspective of natural sciences. The contributions in this volume bridge this gap by analyzing the river both as a natural and as a cultural phenomenon. Adopting an approach of cultural ecology, it addresses issues like ancient land use, administration and taxation, irrigation, and religious concepts.
Author: R. Said Publisher: Elsevier ISBN: 1483287688 Category : Science Languages : en Pages : 337
Book Description
This multidisciplinary book by the author of The Geology of Egypt is the result of many years of research. It attempts to reconstruct the history of the River Nile from its origins to its present shape and regimen and also to ascertain the amount of water which has been carried by the river during the course of its history. It examines the manner in which this water was utilized in the past and the ways in which it will have to be used in future if the inhabitants of the river basin are to cope with their anticipated needs. Part One traces the geological history of the Nile from the time it started to excavate its valley some six million years ago until the present shape was assumed during the wet period which affected Africa after the retreat of the ice of the last glacial age some 10,000 years ago. Part Two deals with the amount of water that the river and its tributaries carry at present and have carried in the past. Part Three discusses the utilization of the water of the Nile from the time of the first appearance of man in the valley until the present time. It traces man's attempt to harness the river from the earliest time to the building of the Aswan High Dam. The book evaluates the effects of the dam after twenty years of operation. Part Four covers the present water supply-demand balance in each basin state and discusses the future plans of these countries to use the waters of the Nile. The rapidly growing populations and the prolonged droughts of recent years have put pressure upon the available waters of the river.
Author: Henri J. Dumont Publisher: Springer Science & Business Media ISBN: 9400965575 Category : Science Languages : en Pages : 354
Book Description
This book IS an attempt to review the state-of-the-art in the fields of limnology and of marine biology in the Sudan. The need for it became apparent while we were doing some joint field work in the Nile Valley and along the Red Sea coast. We feel that several reasons justify its publication. Firstly, a vast amount of information is being gathered year after year by the staff of the Hydrobiological Research U nit of the University of Khartoum, in conjunction with the faculties of Medicine and Agriculture of this university; much of this information fails to find an outlet to the scientific literature. Secondly, we did not want to restrict our book to the Nile Valley. The Nile is such a vital life artery to the Sudan that it has dominated limnological efforts in this country, to the neglect of other geographical areas. The same holds true for the field of marine biology, which lags far behind, despite the existence of a marine field laboratory at Suakin and a research institute at Port Sudan. It is hoped that both will develop considerably in the near future.
Author: George J. Armelagos Publisher: ISBN: 9780813054452 Category : History Languages : en Pages : 266
Book Description
George J. Armelagos spent thirty years at various sites in Sudan searching for ancient Nubian civilizations that gave rise to what we now know as the upper Nile civilizations. Most of these sites are now underwater, due to being inundated when the Aswan Dam was built on the Upper Nile and flooded the ancient cities of Wadi Halfa and Kulubnarti. While hundreds of articles have been written about the research at these sites, this monograph, where Armelagos invited his former student Dennis Van Gerven to collaborate with him, represents the first attempt to explore all of the biocultural relationships between the villages, the people, and the region.
Author: J. Rzóska
Author: J. Rzóska
Author: Henri J. Dumont
Author: Bryan R. Davies
Author: Colbert E. Cushing
Author: Harco Willems
Author: Lauchlan H. Fraser
Author: R. Said
Author: Henri J. Dumont
Author: R. Büttner
Author: George J. Armelagos