| Autor: |
Parkhomenko, A. S., Kondratieva, A. O., Bogoslov, A. V., Shilova, I. V., Kashin, A. S. |
| Předmět: |
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| Zdroj: |
Biology Bulletin; Dec2023, Vol. 50 Issue 10, p2833-2845, 13p |
| Abstrakt: |
Abstract—The morphological variability in populations of the taxa Chondrilla is poorly studied, and the features of its distribution, both spatially and between taxa, are not obvious. The results of our comparative analysis of the nature of this variability on the example of 28 populations of eight taxa of the genus in southeastern European Russia and northwestern Kazakhstan are presented. The variability of eight morphological traits, most of which are still used to determine plant species, was analyzed. It is shown that the variability level of these traits, four of which are taxonomically significant, in one year of monitoring is so wide that it completely overlaps the boundaries of their variability of all Eastern European taxa. At the same time, populations of different taxa growing side by side in similar environmental conditions demonstrated a very similar (just identical in some cases) range of morphological variability. It was concluded that the local conditions of population growth in a particular year of monitoring are most likely the causes of this very dynamic and peculiar variability of traits. Our comparative analysis of the interannual (2015, 2016, and 2022) variability of these quantitative traits in 14 populations of five Chondrilla taxa showed its significant dynamics over years as well. Using the method of nonmetric multidimensional scaling of quantitative morphometric parameters, it is shown that the gradient of their variability takes place from the conditions of minimum moisture and maximum temperature to the conditions of increasing humidity and decreasing temperature. At the same time, the combinations of these climatic factors in specific habitats of populations affect the values of the morphological parameters to a greater extent than their geographical gradients or taxonomic affiliation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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