TAILIEUCHUNG - A chorological study on the taxa naturalized in the Eastern Black Sea region
Diaspores of taxa with large ecological tolerance can be easily carried between continents and some of these taxa become an important factor, threatening the maintenance of plant species diversity, in addition to other factors, such as clear-cutting, overgrazing and dwellings. | Turk J Agric For 25 (2001) 305-309 © TÜB‹TAK A Chorological Study on the Taxa Naturalized in the Eastern Black Sea Region Salih TERZ‹O⁄LU, Rahim ANfi‹N Karadeniz Technical University, Faculty of Forestry, 61080 Trabzon - TURKEY Received: Abstract: Diaspores of taxa with large ecological tolerance can be easily carried between continents and some of these taxa become an important factor, threatening the maintenance of plant species diversity, in addition to other factors, such as clear-cutting, overgrazing and dwellings. Chorological study is an important step for conserving plant species diversity, and it provides information about naturalized plant taxa that have migrated from one continent to others. Presenting the floristic relationships between the continents is important for plant geography and paleobotany. The chorological features of 32 taxa of flowering plants belonging to 14 families, naturalized in the Eastern Black Sea Region of Turkey, were examined and discussed. Most of these taxa come from parts of North America, China and Japan, all of which are areas with climatic conditions similar to those of this region. These taxa have been dispersed by human activity, wind, animals and water. Because of the high rainfall throughout the year, diaspores of naturalized taxa can germinate easily and become new individuals in the study area. Consequently, there have been plant migrations in the temperate region of the world, where the eastern Black Sea region is a plant migratory route between Europe and Caucasia. Key Words: Chorology, Naturalized Taxa, Eastern Black Sea Region Do¤u Karadeniz Bölgesi’nde Do¤allaflm›fl Taksonlar Üzerine Korolojik Bir Çal›flma Özet: Genifl ekolojik tolerans› olan taksonlar›n diasporlar› k›talar aras›nda kolayl›kla tafl›nabilir ve bu taksonlar›n kimileri t›rafllama kesim, afl›r› otlatma ve yerleflim gibi di¤er faktörlerle birlikte bitkisel tür çeflitlili¤inin devam›n› tehdit eden bir faktör haline gelmektedir. .
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