Dependence of diversity of floras on climate in the Middle Volga region
| Autor: | L. S. Sharaya, N. V. Kostina, G. S. Rozenberg, R. S. Kuznetsova, M. A. Aristova, A. V. Ivanova |
|---|---|
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 818:012047 |
| ISSN: | 1755-1315 1755-1307 |
| Popis: | Links with climate of richness of species (Ns), genera (Ng) and families (Nf) for 28 polygons each 400 km2 in Middle Volga were studied. Negative correlations with temperatures T and positive with precipitation P of the warm period were revealed, and T and P most strongly affected diversity. Closest links with climate were for Nf, and the least for Ns. We estimated gradients of T and P in four geographic directions. The most pronounced are northern cold-humid and southeastern thermo-arid trends. The northern trend is characterized by a decrease in T by 0.34°C and an increase in P by 17 mm per 100 km; southeast- with an increase in T by 0.27°C and a decrease in P by 15 mm. The cold-humid trend provides the most favorable conditions for the growth of diversity in the region. In it, Ns increased by 36, Ng-by 17, Nf-by 6 per 100 km. For floras with highest Nf and Ng, closer links with T, P and directions are revealed; in contrast to Ns. This indicates the ecological plasticity of the diversity, with different responses to climate variations for different taxonomic levels, which contribute to the preservation of diversity in a heterogeneous climate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|