Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Ibexes in an African Environment PDF full book. Access full book title Ibexes in an African Environment by B. Nievergelt. Download full books in PDF and EPUB format.
Author: B. Nievergelt Publisher: Springer Science & Business Media ISBN: 3642679587 Category : Science Languages : en Pages : 190
Book Description
The Caprinae are characteristic ungulates of palaearctic mountain regions. The Walia ibex, Capra ibex walie, a member of the Caprinae, has colonized successfully the Simen mountains in Ethiopia, and as such presents an interesting act in the history of the Caprinae. Apart from the question of how the Walia ibex or its ancestors ever reached the Simen mountains, the only place it occurs, I would like to stress a further point: about half of the existing ungulate species in the world are endemic to Africa. Eightyseven species of the Artiodactyla are reported to live in this continent, while there are only 17 in South America (Haltenorth 1963, Delany and Happold 1979). Such abundance of ungulate forms must have been attended by optimal utilization of the various habitats and form co-adaptation of sympatric species (Lamprey 1963, Bell 1970, Gentry 1970). Despite such intense com petition however, the Walia ibex found its natural niche still open. Obviously, its adaptations to living on steep cliffs have favoured its establishment over the already existing ungulate fauna in an afroalpine mountain area. In fact, none of the Cervids has achieved a similar successful colonisation on the African continent, even though they are much older as a group, and have already shown themselves to be well established on the American and Eurasian continents.
Author: B. Nievergelt Publisher: Springer Science & Business Media ISBN: 3642679587 Category : Science Languages : en Pages : 190
Book Description
The Caprinae are characteristic ungulates of palaearctic mountain regions. The Walia ibex, Capra ibex walie, a member of the Caprinae, has colonized successfully the Simen mountains in Ethiopia, and as such presents an interesting act in the history of the Caprinae. Apart from the question of how the Walia ibex or its ancestors ever reached the Simen mountains, the only place it occurs, I would like to stress a further point: about half of the existing ungulate species in the world are endemic to Africa. Eightyseven species of the Artiodactyla are reported to live in this continent, while there are only 17 in South America (Haltenorth 1963, Delany and Happold 1979). Such abundance of ungulate forms must have been attended by optimal utilization of the various habitats and form co-adaptation of sympatric species (Lamprey 1963, Bell 1970, Gentry 1970). Despite such intense com petition however, the Walia ibex found its natural niche still open. Obviously, its adaptations to living on steep cliffs have favoured its establishment over the already existing ungulate fauna in an afroalpine mountain area. In fact, none of the Cervids has achieved a similar successful colonisation on the African continent, even though they are much older as a group, and have already shown themselves to be well established on the American and Eurasian continents.
Author: B. Nievergelt Publisher: Springer ISBN: Category : Science Languages : en Pages : 210
Book Description
The Caprinae are characteristic ungulates of palaearctic mountain regions. The Walia ibex, Capra ibex walie, a member of the Caprinae, has colonized successfully the Simen mountains in Ethiopia, and as such presents an interesting act in the history of the Caprinae. Apart from the question of how the Walia ibex or its ancestors ever reached the Simen mountains, the only place it occurs, I would like to stress a further point: about half of the existing ungulate species in the world are endemic to Africa. Eightyseven species of the Artiodactyla are reported to live in this continent, while there are only 17 in South America (Haltenorth 1963, Delany and Happold 1979). Such abundance of ungulate forms must have been attended by optimal utilization of the various habitats and form co-adaptation of sympatric species (Lamprey 1963, Bell 1970, Gentry 1970). Despite such intense com petition however, the Walia ibex found its natural niche still open. Obviously, its adaptations to living on steep cliffs have favoured its establishment over the already existing ungulate fauna in an afroalpine mountain area. In fact, none of the Cervids has achieved a similar successful colonisation on the African continent, even though they are much older as a group, and have already shown themselves to be well established on the American and Eurasian continents.
Author: W.H. Mahaney Publisher: CRC Press ISBN: 1000446840 Category : Technology & Engineering Languages : en Pages : 431
Book Description
Twenty-six papers form a summary of research on glacial history, paleoclimatology, biogeography, ecosystem disequilibrium. Focus is on detailed chrono-stratigraphic, glacial geologic, and vertebrate paleontologic problems.
Author: P. de V. Booysen Publisher: Springer Science & Business Media ISBN: 3642698050 Category : Science Languages : en Pages : 431
Book Description
This is a stimulating tale of the interplay of observation, experimentation, working hypotheses, tentative conclusions, niggling and weightier doubts and great aspirations, on the part of some score of students, on varied ecological and other aspects of the regime and role of fire in relevant biomes and ecosystem- mainly in South Africa - and on other pertinent features of fire ecology. The impressive contents is a tribute to conveners and authors alike. One can expect a profound range and depth ofinvestigation and interpretation, a closeknit fabric of knowledge, delicately interwoven with wisdom, an exposition and quintessence of information. Admipable is the collective vision responsible for selecting appropriate topics: the wide sweeps of the brush picturing the nature of the biomes; ably describing the fire regimes - whether in grassland, savanna, fynbos or forest; skillfully defining the effects of such regimes - according to ecosystem - upon aerial and edaphic factors of the habitat, upon constituent biota, individually, specifically and as a biotic community; elucidating the basic implications in the structure and dynamics of the plant aspect of that community ... and unravelling to some degree the tangled knot of the conservation and dissipation of moisture and nutrients. Moreover, gratitude is owed for efforts exerted to understand the interplay of fire and faunal behaviour and dynamics as well as composition, together with the principle of adaptive responses of organisms of diverse kinds.
Author: Michael A. Mares Publisher: University of Oklahoma Press ISBN: 0806172290 Category : Nature Languages : en Pages : 695
Book Description
Encyclopedia of Deserts represents a milestone: it is the first comprehensive reference to the first comprehensive reference to deserts and semideserts of the world. Approximately seven hundred entries treat subjects ranging from desert survival to the way deserts are formed. Topics include biology (birds, mammals, reptiles, amphibians, fishes, invertebrates, plants, bacteria, physiology, evolution), geography, climatology, geology, hydrology, anthropology, and history. The thirty-seven contributors, including volume editor Michael A. Mares, have had extensive careers in deserts research, encompassing all of the world’s arid and semiarid regions. The Encyclopedia opens with a subject list by topic, an organizational guide that helps the reader grasp interrelationships and complexities in desert systems. Each entry concludes with cross-references to other entries in the volume, inviting the reader to embark on a personal expedition into fascinating, previously unknown terrain. In addition a list of important readings facilitates in-depth study of each topic. An exhaustive index permits quick access to places, topics, and taxonomic listings of all plants and animals discussed. More than one hundred photographs, drawings, and maps enhance our appreciation of the remarkable life, landforms, history, and challenges of the world’s arid land.
Author: Jonathan Kingdon Publisher: A&C Black ISBN: 140818995X Category : Nature Languages : en Pages : 705
Book Description
Mammals of Africa (MoA) is a series of six volumes which describes, in detail, every currently recognized species of African land mammal. This is the first time that such extensive coverage has ever been attempted, and the volumes incorporate the very latest information and detailed discussion of the morphology, distribution, biology and evolution (including reference to fossil and molecular data) of Africa's mammals. With more than 1,160 species and 16-18 orders, Africa has the greatest diversity and abundance of mammals in the world. The reasons for this and the mechanisms behind their evolution are given special attention in the series. Each volume follows the same format, with detailed profiles of every species and higher taxa. The series includes hundreds of colour illustrations and pencil drawings by Jonathan Kingdon highlighting the morphology and behaviour of the species concerned, as well as line drawings of skulls and jaws by Jonathan Kingdon and Meredith Happold. Every species also includes a detailed distribution map. Edited by Jonathan Kingdon, David Happold, Tom Butynski, Mike Hoffmann, Meredith Happold and Jan Kalina, and written by more than 350 authors, all experts in their fields, Mammals of Africa is as comprehensive a compendium of current knowledge as is possible. Extensive references alert readers to more detailed information. Volume VI, edited by Jonathan Kingdon and Michael Hoffmann, comprises a single order, currently subdivided into three suborders, containing the hippopotamuses, pigs, chevrotains, deer, Giraffe, Okapi, buffalos, spiral-horned antelopes, dwarf antelopes, duikers, grysboks, Beira, dik-diks, gazelles, Klipspringer, Oribi, reduncines, Impala, alcelaphines, horse-like antelopes, sheep and goats; the volume contains 98 species profiles.
Author: Hans Wilhelm Lockot Publisher: Otto Harrassowitz Verlag ISBN: 9783447036115 Category : Africa, Northeast Languages : en Pages : 890
Book Description
Erstmals wird hier die Fulle der englischsprachigen Athiopienliteratur geordnet dargeboten. In 100 Sections fuhrt der Autor alle fur die wissenschaftliche Beschaftigung mit Athiopien wichtigen Buch- und Zeitschriftenbeitrage zum Beispiel zur "Historyof Research", "Archaeology", "Religion", aber auch Fragen der "Sociology", "Agriculture", "Zoology" und "Medical Sciences" auf. Wie im Falle der deutschsprachigen Literatur ("Bibliographia Aethiopica: Die athiopienkundliche Literatur des deutschsprachigenRaumes" = Aethiopistische Forschungen 9 [1982]) berucksichtigt der Autor auch alle ihm zuganglichen Besprechungen, womit bei einer Aufnahme von mehr als 24.000 Titeln eine Art "Bibliographic Enzyclopedia" entstanden ist.
Author: B. Nievergelt
Author: B. Nievergelt
Author: Bernhard Nievergelt
Author: B. Nievergelt
Author: B. Nievergelt
Author: W.H. Mahaney
Author: P. de V. Booysen
Author: Michael A. Mares
Author: Jonathan Kingdon
Author: Hans Wilhelm Lockot
Author: David Horák