Keywords
phytogeography
ecology
paleogeography
area
How to Cite
Abstract
This article deals with the ideas concerning the role of geological, climatic and environmental changes in the formation of the modern areas of species of the genus Rhododendron L. Modern areas of different taxa formed under the influence of two main large groups of factors: the adaptation of organisms to certain areas of natural habitat and history of the formation; origin centers, evolutionary change, time and resettlement, the presence of migration corridors, etc. The vast majority of species of Rhododendron (over 700 species) growing in the eastern Himalayas and south-eastern Tibet on the slopes with very deep valleys or mountain ridges that form the main line between mainland Asia and Australia through the archipelago, to wit: the islands of Java, Sumatra, Borneo, New Guinea and the Philippines. However, other less numerous species (about 200 species) are spread throughout the northern hemisphere, with disjunctive areas or substantially isolated from each other, to wit: Japan, northwest North America, Appalachian, northern Europe and the Caucasus Mountains. We believe that in the genus formation rhododendrons were distributed much more evenly than now, and that their current distribution is caused by recent climate changes (by geological standards), i.e. glacial period, the expansion and the emergence of new deserts and lowlands. The concentration of rhododendron species in South-East Asia arising from the dynamic processes of orogeny and creating favorable conditions for the successful development and processes of speciation.
References
Bogdanovskaya-Gienef, I.D. (1946), O proishozhdenii flory borealnyh bolot Evrazii [On the origin of the flora of the boreal wetlands of Eurasia]. Materialy po istorii flory i rastitelnosti SSSR, [Materials on the history of flora and vegetation of the USSR]. Moscow, Leningrad, N 2, pp. 425—468.
Grossgeim, A.A. (1939), Flora Kavkaza [Flora Caucasus]. Baku, N 2, 587 p.
Mazurenko, M.T. (1986), Biomorfologicheskie adaptatsii rasteniy Kraynego Severa [Biomorphological adaptation of plants of the Far North]. Moscow, Nauka, 209 p.
Mosyakin, S.L. (2003), Systematyka, fitogeografia, ta genezys rodyny Chenopodiaceae Vent. Avtoref.dys. na zdobuttya nauk. stupenja dokt. biol. nauk [Systematics, fіtogeografy and the genesis of family Chenopodiaceae Vent. Thesis for doctorate`s degree]. Kyiv, 32 p.
Serebryakov, I.G. (1962), Ekologicheskaya morfologiya rasteniy [Ecological plant morphology]. Moscow, Vysshaya shkola, 378 p.
Tahtadzhyan, A.L. (1966), Sistema i filogeniya tsvetkovyh rasteniy [System and phylogeny of flowering plants]. Leningrad, Nauka, 612 p.
Tahtadzhyan, A.L. (1970), Proishozhdenie I rasselenie tsvetkovyh rasteniy [The origin and dispersal of flowering plants]. Leningrad, Nauka, 147 p.
Tahtadzhyan, A.L. (1978), Floristicheskie oblasti zemli [Floristic region of the earth]. Leningrad, Nauka, 247 p.
Tolmachev, A.I. (1960), O proishozhdenii arkticheskoy flory. Kogda, gde i kak voznikla arkticheskaya flora? [On the origin of Arctic flora. When, where and how did the Arctic flora?]. Voprosy botaniki [Botany questions], N 3, pp. 18—31.
Angiosperm Phylogeny Group (2003), An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II . Botanical Journal of the Linnean Society, N 141, pp. 399—436.
Ericales Dumortier Main Tree, Synapomorphies. Mode access: http://www.mobot.org/mobot/research/apweb/orders/ericalesweb.htm
Greuter, W., McNeill, J., Barrie, F.R., Burdet, H.M., Demoulin, V., Filgueiras, T.S., Nicolson, D.H., Silva, P. C., Skog, J.E., Trehane, P., Turland, N.J. and Hawksworth, D.L. [editors and compilers] (2000), International Code of Botanical Nomenclature (Saint Louis Code). Adopted by the Sixteenth International Botanical Congress, St. Louis, Missouri, July—August 1999. Königstein, Koeltz Scientific Books, 474 p.
Irving, E. and Hebda, R. Concerning the Origin and Distribution of Rhododendrons. Mode access: http://www.rhododendron.org/v47n3p139.html
Mayr, E. (1982), The growth of biological thought: Diversity, evolution, and inheritance. Cambridge, Mass., and London, Belknap Press of Harvard University Press, 974 p.
Sleumer, H., (1972), Flora Malesiana, series 1, Spermatophyta, Ericacaene, 6, pp. 469—914.
Spellenberg, I.F.and Sawyer, J.W.D. (1999), An introduction to applied biogeography. Cambridge, Cambridge Univ. Press, 241 p.
.Temple, A. (1977), Ericaceae: Polymorphisme architectural d’une famille des regions tempereres et tropicales d’altitude. C. r. Acad. sci., N 284 (3), pp. 163—166.
This work is licensed under a Creative Commons Attribution 4.0 International License.