Summary
The altitudinal ranges of a sample of Uganda forest trees were estimated from sources of information available in Uganda. Various physiognomic characters were determined for each of the sample species. Altitudinal changes in floristic and physiognomic attributes were analysed for the existence of critical altitudes. The results indicate that, when the country is considered as a whole, forest vegetation in Uganda forms an altitudinal continuum.
Résumé
Les distributions d'altitude de quelques essences forestières d'Uganda ont été estimées provenant de sources d'information en Uganda. Pour chacune de ces espèces les différents caractères physiognomiques ont été déterminés. Les changements en flore et physiognomie par l'altitude ont été analysés pour détecter l'existence des altitudes critiques. Si toute la région est considérée comme ensemble les résultats indiquent que la végétation forestière en Uganda forme un continuum vertical.
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References
Atlas of Uganda. 1967. Second ed. Department of Lands and Surveys, Uganda. 81 pp.
Boughey, A. S. 1955a. The nomenclature of the vegetation zones of the mountains of Africa. Webbia 11: 413–423.
Boughey, A. S. 1955b. The vegetation of the mountains of Biafra. Proc. Linn. Soc. Lond. Session 165, 1952–53, Pt. 2: 144–150.
Cain, S. A. & G. M. Castro. 1959 Manual of vegetation analysis. New York. 325 pp.
Chapman, J. D. & F. White. 1970. The evergreen forests of Malawi. Commonwealth Forestry Institute, University of Oxford. 190 pp.
Dale, I. R. 1940. The forest types of Mount Elgon. Jl. E. Africa Uganda Nat. Hist. Soc. 45: 74–82.
Dale, I. R. & P. J. Greenway. 1961. Kenya trees and shrubs. University Press, Glasgow. 654 pp.
Dawkins, H. C. 1951. Graphical field keys to Uganda trees, 1. Forest trees, Mengo District. E. Afr. Agric. J. 17: 1–15.
Eggeling, W. J. & I. R. Dale. 1952. The indigenous trees of the Uganda Protectorate. Second ed. University Press, Glasgow. 491 pp.
Fishlock, C. W. L. & G. L. R. Hancock. 1933. Notes on the flora and fauna of the Ruwenzori with special reference to the Bujuku valley. Jl. E. Africa Uganda Nat. Hist. Soc. 44: 205–229.
Flora of Tropical East Africa. 1952 et seq. Crown Agents, London.
Greenway, P. J. 1943. Second draft report on vegetation classification for the approval of the Vegetation Committee, Pasture Research Conference, Nairobi. Cyclostyled.
Grubb, P. J., J. R. Lloyd, J. D. Pennington & T. C. Whitmore. 1963. A comparison of montane and lowland rain forest in Ecuador, I. The forest structure, physiognomy, and floristics. J. Ecol. 51: 567–601.
Grubb, P. J. & T. C. A. Whitmore. 1966. A comparison of montane and lowland rain forest in Ecuador, II. The climate and its effects on the distribution and physiognomy of the forests. J. Ecol. 54: 303–333.
Hamilton, A. C. 1972. The interpretation of pollen diagrams from highland Uganda. Palaeoecology of Africa 7: 45–149.
Hamilton, A. C. 1974. Distribution patterns of forest trees in Uganda and their historical significance. Vegetatio 29: 21–35.
Hedberg, O. 1951. Vegetation belts of the East African mountains. Svensk bot. Tidskr. 45: 140–202.
Hedberg, O. 1957. Afroalpine vascular plants. Symb. bot. upsal. 15: 1–411.
Kendall, R. L. 1969. An ecological history of the Lake Victoria basin. Ecol. Monogr. 39: 121–176.
Kingdon, J. 1971. East African mammals. An atlas of evolution in Africa. Vol. 1. Academic Press, London and New York. 446 pp.
Langdale-Brown, I., H. A. Osmaston & J. G. Wilson. 1964. The vegetation of Uganda. Government Printer, Uganda. 159 pp.
Lebrun, J. 1935. Les essences forestières des régions montagneuses du Congo Oriental. Publ. Inst. Agron. Congo Belge, Ser. sci. 1.
Lebrun, J. 1936. La forêt équatoriale congolaise. Bull. agric. Congo belge 27: 163–192.
Livingstone, D. A. 1967. Postglacial vegetation of the Ruwenzori mountains in Equatorial Africa. Ecol. Monogr. 37: 25–52.
Moreau, R. E. 1963. Vicissitudes of the African biomes in the Late Pleistocene. Proc. Zool. Soc. Lond. 141: 395–421.
Moreau, R. E. 1966. The bird faunas of Africa and its islands. Academic Press, London and New York. 424 pp.
Morrison, M. E. S. 1968. Vegetation and climate in the uplands of south-western Uganda during the later Pleistocene period, I. Muchoya Swamp, Kigezi District. J. Ecol. 56: 363–384.
Morrison, M. E. S. & A. C. Hamilton. 1974. Vegetation and climate in the uplands of south-western Uganda during the later Pleistocene period, II. Forest clearance and other vegetational changes in the Rukiga Highlands during the past 8,000 years. J. Ecol. 62: 1–31.
Osmaston, H. A. 1958. Pollen analysis in the study of the past vegetation and climate of the Ruwenzori and its neighbourhood. Forestry Department, Uganda. 32 pp.
Richards, P. W. 1964. The tropical rain forest. The University Press, Cambridge. 450 pp.
Robyns, W. 1947. Flore des spermatophytes du Parc National Albert. Vol. 1 — Gymnospermes et Chloripetales. Institut des Parcs Nationaux du Congo Belge, Bruxelles. 627 pp.
Russell, E. W., (ed). 1962. The natural resources of East Africa. East African Literature Bureau, Nairobi, 144 pp.
Sneath, P. M. A. & R. R. Sokal. 1973. Numerical Taxonomy. W. H. Freeman & Co., San Francisco, 573 pp.
Snowden, J. D. 1933. A study in altitudinal zonation in South Kigezi and on Mounts Muhavura and Mgahinga, Uganda. J. Ecol. 21: 7–27.
Van Steenis, C. G. G. J. 1935. On the origin of the Malaysian mountain flora, II. Altitudinal zones, general considerations and renewed statement of the problem. Bull. Jard. bot. Buitenz. (Series 3) 13: 289–417.
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I am grateful to the Curators of the Herbaria of the Botany Department, Makerere University, Uganda, and of the Forest Department, Uganda, for use of their facilities. I wish to thank Dr. B. W. Styles of the Commonwealth Forestry Institute, Oxford, for data concerning the distribution ofMeliaceae. Dr. W. L. Cresswell and Mr. B. S. Rushton gave statistical advice and Dr. R. T. Moore critically read the manuscript.
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Hamilton, A.C. A quantitative analysis of altitudinal zonation in Uganda forests. Plant Ecol 30, 99–106 (1975). https://doi.org/10.1007/BF02389611
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DOI: https://doi.org/10.1007/BF02389611