Фітогеографія та еволюційна екологія роду Rhododendron L.

• Дата: 2015
• Автори: Shumyk, M.I., Ostapyuk, V.M.
• Формат: Стаття
• Мова: English
• Опубліковано: M.M. Gryshko National Botanical Garden of the NAS of Ukraine 2015
• Онлайн доступ: https://www.plantintroduction.org/index.php/pi/article/view/164
• Назва журналу: Plant Introduction

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.