In 1963 the director general of the 'Office de la Recherche Scientifique et Technique Outre-Mer' (ORSTOM) asked me to form a well structured team of hydrobiologists based at Fort-Lamy (now N'Djamena) where a laboratory could be built as a branch of the already existing ORSTOM Center. The International Biological Program, IBP, had at this time recommended an integrated study of ecosystems selected in proportion to their representation of a particular zone or ecological conditions. I took this opportunity to propose Lake Chad as the model of a tropicallake in a semi-arid c1imate as part of the...
In 1963 the director general of the 'Office de la Recherche Scientifique et Technique Outre-Mer' (ORSTOM) asked me to form a well structured team of h...
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 ....
357 Temperature ...358 Transparency and light penetration. 360 Salinity and conductivity 363 Major ions ...365 Dissolved gases and pH 371 Plant nutrie...
Since the limnological research on the man-made Brokopondo Reservoir in the 'sixties, numerous data have been collected on the ecology of Surinam rivers and swamps. This book is a compilation of these data: it is the first comprehensive survey of the aquatic ecology of one of the peripheral areas of Amazonia. The geomorphology of the country, situated on the Guyana Shield, is the main factor determining the limnological properties of rivers and creeks. This results in an overall picture that is quite different from Amazonia. The emphasis of The Ecosystems of Suriname is on the living...
Since the limnological research on the man-made Brokopondo Reservoir in the 'sixties, numerous data have been collected on the ecology of Surinam rive...
The Evolution of Desert Adaptations. 190 A Comparison of Behavior Patterns. . 196 A Comparison of Behavior Patterns in: Meriones, Gerbillus and Perognathus . . . . . 210 Spacing and Communication 217 Acknowledgements 221 References . . . . . . . . 221 XI. Activity Patterns ofa Desert Rodent by N. R. FRENCH 225 Introduction . . . . . . . . . . . . . . . 225 Methods. . . . . . . . . . . . . . . . . 226 The Microdosimeter and the Index of Activity. 227 Variation in Activity. . . . . . . . . . . . 229 Climatological Variables and Animal Activity . 229 Analysis . 232 Discussion 237 Summary 238...
The Evolution of Desert Adaptations. 190 A Comparison of Behavior Patterns. . 196 A Comparison of Behavior Patterns in: Meriones, Gerbillus and Perogn...
When asked by the General Editor to prepare a book-length treatment concerning the nature of the Canary Islands, our aims were rather ambitious. A general monograph was to be written, embracing all the disciplines of natural history applicable to these islands, and over twenty scientists were approached for contributions. However scientists are 'time machines'; our proposed list of contents has changed a good many times. Cooporation of other authors was gained and, finally, a fairly rounded project appeared revealing different and lesser known aspects of Canary Island Nature. Since Centuries...
When asked by the General Editor to prepare a book-length treatment concerning the nature of the Canary Islands, our aims were rather ambitious. A gen...
A large part of this book is dedicated to the geology of the Pityusic Archipelago, followed by contributions on climate and geography. Funguses, mosses and leeks are the subjects of taxonomical botany, and a further paper deals with the vegetation of the islands. Another large part of this book is concerned with zoology: faunal lists on fleas, bees, wasps, ants, butterflies, beetles, snails, amphibians and reptiles, birds and mammals, the latter with their epi- and endofaunas as well as their subfossil remains are presented in 13 different papers. Three of them deal with the special problems...
A large part of this book is dedicated to the geology of the Pityusic Archipelago, followed by contributions on climate and geography. Funguses, mosse...
PAR A. LAFONTAINE Directeur de l' Institut d' Hygiene et d' Epidemiologie, Bruxelles L'histoire des fievres typhoides et paratyphoides presente une etonnante opposition entre le caractere definitif des descriptions magistrales des diniciens du XIX 0 siede et la fiuctuation des decouvertes biologiques qui, a chacune de leurs etapes, ont a la fois ouvert un chapitre pathogenique nouveau et servi de depart ades techniques nouvelles. C'est en 1820 que BRETONNEAU decrit la dothienenterie; neuf ans plus tard, LOUIS realise la synthese anatomo-clinique de la maladie et, en 1834, CHAUVEL lui donne le...
PAR A. LAFONTAINE Directeur de l' Institut d' Hygiene et d' Epidemiologie, Bruxelles L'histoire des fievres typhoides et paratyphoides presente une et...
