What determines the distribution of Tulipa species in Uzbekistan?
DOI:
https://doi.org/10.54981/PDCA/vol1_iss2/a5Keywords:
geospatial analysis, species richness, species range, species distribution modelingAbstract
Although the distribution of Tulipa species in Uzbekistan is well documented, there is no clear understanding of the importance of three classes of environmental variables, climate, soil type, and topography, as determinants of their distribution. We mapped the richness of Tulipa species in Uzbekistan, and conducted species distribution modeling to analyze the contribution of climate, soil type, and topography, to their predicted suitable ranges. The relationship between Tulipa species richness and altitude is best described by a hump-shaped curve, with a majority of the Tulipa species occurring at the altitude range of 700-2200 m. The climate was a major determinant of species distribution for the majority of the analyzed species, however, topography (slope angle and aspect) was equally or even more important for T. tschimganica, T. borszczowii, T. butkovii, T. carinata, T. affinis, T. micheliana, T. sogdiana and T. korolkowii. Soil was an important factor only for T. uzbekistanica, T. butkovii and T. lanata. The conservation implications of these results are discussed.
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