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Author: Olov Hedberg
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 152
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Book Description
Author: Olov Hedberg
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 152
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Book Description
Author: Marinus J.A. Werger
Publisher: Springer Science & Business Media
ISBN: 9400999518
Category : Science
Languages : en
Pages : 1402
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Book Description
Southern Africa is certainly not a naturally bounded area so that there are several possibilities for delineating it and concepts about its extent. Wellington* discussed the various possibilities for delineation and suggested that one line stands out more clearly and definitely as a physical boundary than any other, namely the South Equatorial Divide, the watershed between the ZaIre, Cuanza and Rufiji Rivers on the one hand and the Z ambezi, Cunene and Rovuma Rivers on the other. This South Equatorial Divide is indeed a major line of separation for some organisms and is also applicable in a certain geographical sense, though it does not possess the slightest significance for many other groups of organisms, ecosystems or geographical and physical features of Africa. The placing of the northern boundary of southern Africa differs in fact strongly per scientific dis cipline and is also influenced by practical considerations regarding the possibilities of scientific work as subordinate to certain political realities and historically grown traditions. This is illustrated, for example, in such works as the Flora of Southern Africa, where the northern boundary of the area is conceived as the northern and eastern political boundaries of South West Africa, South Africa and Swaziland. Botswana, traditionally included in the area covered by the Flora Zambesiaca, thus forms a large wedge in 'Southern Africa'.
Author: Olov Hedberg
Publisher:
ISBN: 9789163040146
Category : Phytogeography
Languages : en
Pages : 144
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Book Description
Author: Ernst-Detlef Schulze
Publisher: Springer Science & Business Media
ISBN: 9783540208334
Category : Science
Languages : en
Pages : 716
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Book Description
This textbook covers Plant Ecology from the molecular to the global level. It covers the following areas in unprecedented breadth and depth: - Molecular ecophysiology (stress physiology: light, temperature, oxygen deficiency, drought, salt, heavy metals, xenobiotica and biotic stress factors) - Autecology (whole plant ecology: thermal balance, water, nutrient, carbon relations) - Ecosystem ecology (plants as part of ecosystems, element cycles, biodiversity) - Synecology (development of vegetation in time and space, interactions between vegetation and the abiotic and biotic environment) - Global aspects of plant ecology (global change, global biogeochemical cycles, land use, international conventions, socio-economic interactions) The book is carefully structured and well written: complex issues are elegantly presented and easily understandable. It contains more than 500 photographs and drawings, mostly in colour, illustrating the fascinating subject. The book is primarily aimed at graduate students of biology but will also be of interest to post-graduate students and researchers in botany, geosciences and landscape ecology. Further, it provides a sound basis for those dealing with agriculture, forestry, land use, and landscape management.
Author: Philip W. Rundel
Publisher: Cambridge University Press
ISBN: 052142089X
Category : Gardening
Languages : en
Pages : 400
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Book Description
Plants growing in tropical alpine environments (at altitudes above the closed canopy forest and below the limit of plant life) have evolved distinct forms to cope with a hostile environment characterized by cold, drought and fire. Unlike temperate alpine environments, where there are distinct seasons of favourable and unfavourable conditions for growth, tropical alpine habitats present summer conditions every day and winter conditions every night. Using examples from all over the tropics, this fascinating account reviews, for the first time, the unique form and functional relationships of tropical alpine plants examining both their physiological ecology and population biology. It will appeal to anyone interested in tropical vegetation and plant physiological adaptations to hostile environment, as well as to researchers in biogeography and ecology.
Author: M.J. Coe
Publisher: Springer Science & Business Media
ISBN: 9401178313
Category : Science
Languages : en
Pages : 172
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Book Description
For centuries the peak of Mount Kenya has held a magical and religious significance for the Bantu and Nilohamitic peoples around its base. The Kikuyu live around the Eastern and Southern bound aries and the closely related Uembu and Umeru on the S.E. and N.E. respectively. Early in this century the Masai lived to the N.W. and North, but after continual warfare between them and their neighbours, the European administrators of that time moved them to a special reserve to the South, which accounts at the present day for the retention in the Masai language of many words that refer to Mount Kenya. Kikuyu folk-lore tells how, when the earth was formed, a man named Mogai made a great mountain, Kere-Nyaga. The fine white powder (snow) covering the peak, which they called ira, was said to be the bed of Ngai (God), and during male and female circumcision ceremonies a white powder was placed on the wound, and the ini tiates were told that this material had been brought from the summit of the mountain. In fact all important tribal ceremonies were, and in many cases still are conducted facing the mountain. Such occasions include marriage and sacrifice when, in time of hardship, Ngai's aid is called upon (CAGNOLO 1933, KENYATTA 1938, CRIRA 1959).
Author: J.L. Gressit
Publisher: Springer Science & Business Media
ISBN: 9400986327
Category : Science
Languages : en
Pages : 962
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Book Description
J. L. Gressitt New Guinea is a fantastic island, unique and fascinating. It is an area of incredible variety of geomorphology, biota, peoples, languages, history, tradi tions and cultures. Diversity is its prime characteristic, whatever the subject of interest. To a biogeographer it is tantalizing, as well as confusing or frustrating when trying to determine the history of its biota. To an ecologist, and to all biologists, it is a happy hunting ground of endless surprises and unanswered questions. To a conservationist it is like a dream come true, a "flash-back" of a few centuries, as well as a challenge for the future. New Guinea is so special that it is hard to compare it with other islands or tropical areas. It is something apart, with its very complicated history (chapters I: 2-4, II: 1-4, III: I, VI: I, 2). It is partly old but to a great extent very young, yet extremely rich and complex. It has biota of different sources - to such a degree that it is still disputed in this volume as to what Realm it belongs to: the Paleotropical or Notogaean (Australian); or what Region: Oriental, "Oceanic," Papuan or Australian. The terms Papuasian, Indo-Australian and Australasian also have been applied to the area.
Author: Ulrich Lüttge
Publisher: Springer Science & Business Media
ISBN: 3662033402
Category : Science
Languages : en
Pages : 393
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Book Description
This richly illustrated text covers the ecophysiology of plants of all major tropical ecosystems, from tropical rain forests, epiphytic habitats, mangroves and savannas to salinas, inselbergs and paramos and their ecophysiological adaptation to these different tropical environments. The physiognomy of biotopes and characteristic life forms of plants are depicted with photographs.
Author: Kflay Gebrehiwot Yaynemsa
Publisher: Springer Nature
ISBN: 3031202252
Category : Science
Languages : en
Pages : 175
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Book Description
This book covers biodiversity conservation under special consideration of the challenges in the global south with particular attention being paid to consider the existing conservation challenges in relation to the study area in Ethiopia. Key issues are addressed, such as the current and future threats to plant biodiversity in Ethiopia, as well as the single large or several small conservation approaches and which approach is feasible for Ethiopia. Furthermore, an innovative approach was developed that enhances ecological connectivity and promotes ecological restoration through community involvement. The book also covers why a systematic conservation planning approach is important and should be used in new protected area establishments, and also looks at the trends of plant ecology research over the past five decades, revealing research gaps and suggesting future research topics. Despite its focus on Ethiopian plant diversity, abundant examples were used from different continents making this book attractive to global readers. It will be of interest for policy- and decision-makers in the conservation sector, researchers interested in biodiversity, climate change, conservation and sustainable use of natural resources, and would be a valuable resource for university students.
Author: John A. Matthews
Publisher: Cambridge University Press
ISBN: 0521361095
Category : Nature
Languages : en
Pages : 414
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Book Description
The first comprehensive review of the available information on the ecology of recently-deglaciated terrain, this volume evaluates critically the methodology employed in such studies.
