Scale- and taxon-dependent patterns of plant diversity in steppes of Khakassia, South Siberia (Russia)
Autor: | Thomas Becker, Riccardo Guarino, Jürgen Dengler, Monika Janišová, Kohei Suzuki, Mariya A. Polyakova, Łukasz Kozub, Nikolai Ermakov, Ute Becker, Iwona Dembicz, Renaud Jaunatre, Olga N. Demina, Manuel J. Steinbauer, Goffredo Filibeck |
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Přispěvatelé: | Max Von Pettenkofer Institute (MVP), Ludwig-Maximilians-Universität München (LMU), Sars International Centre for Marine Molecular Biology, University of Bergen (UiB), Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UMR237-Aix Marseille Université (AMU)-Avignon Université (AU), Polyakova, M., Dembicz, I., Becker, T., Becker, U., Demina, O., Ermakov, N., Filibeck, G., Guarino, R., Janišová, M., Jaunatre, R., Kozub, Ł., Steinbauer, M., Suzuki, K., Dengler, J. |
Jazyk: | angličtina |
Rok vydání: | 2016 |
Předmět: |
0106 biological sciences
Vascular plant Species richne Biodiversity Bryophyte Environmental factor Lichen Species richness Species–area relationship Ecology Evolution Behavior and Systematics Ecology Nature and Landscape Conservation IMPACT Range (biology) Steppe SPECIES-AREA RELATIONSHIP SEMINATURAL GRASSLANDS 010603 evolutionary biology 01 natural sciences RICHNESS ComputingMilieux_MISCELLANEOUS geography geography.geographical_feature_category PRODUCTIVITY LANDSCAPE biology DRY GRASSLANDS Species diversity Vegetation EAST-CENTRAL-EUROPE 15. Life on land biology.organism_classification Ecology Evolution Behavior and Systematic CLIMATE Taxon VEGETATION-ENVIRONMENT RELATIONSHIPS [SDE.BE]Environmental Sciences/Biodiversity and Ecology 010606 plant biology & botany |
Zdroj: | Biodiversity and Conservation Biodiversity and Conservation, 2016, 25 (12, SI), pp.2251--2273. ⟨10.1007/s10531-016-1093-y⟩ Biodiversity and Conservation, Springer Verlag, 2016, 25 (12, SI), pp.2251--2273. ⟨10.1007/s10531-016-1093-y⟩ Polyakova, M A, Dembicz, I, Becker, T, Becker, U, Demina, O N, Ermakov, N, Filibeck, G, Guarino, R, Janisova, M, Jaunatre, R, Kozub, L, Steinbauer, M J, Suzuki, K & Dengler, J 2016, ' Scale-and taxon-dependent patterns of plant diversity in steppes of Khakassia, South Siberia (Russia) ', Biodiversity and Conservation, vol. 25, no. 12, pp. 2251-2273 . https://doi.org/10.1007/s10531-016-1093-y |
ISSN: | 0960-3115 1572-9710 |
Popis: | The drivers of plant richness at fine spatial scales in steppe ecosystems are still not sufficiently understood. Our main research questions were: (i) How rich in plant species are the natural steppes of Southern Siberia compared to natural and semi-natural grasslands in other regions of the Palaearctic? (ii) What are the main environmental drivers of the diversity patterns in these steppes? (iii) What are the diversity-environment relationships and do they vary between spatial scales and among different taxonomic groups? We sampled the steppe vegetation (vascular plants, bryophytes and lichens) in Khakassia (Russia) with 39 nested-plot series (0.0001-100-m(2) plot size) and 54 additional 10-m(2) quadrats across the regional range of steppe types and measured various environmental variables. We measured beta-diversity using z-values of power-law species-area relationships. GLM analyses were performed to assess the importance of environmental variables as predictors of species richness and z-value. Khakassian steppes showed both high alpha- and beta-diversity. We found significant scale dependence for the z-values, which had their highest values at small spatial scales and then decreased exponentially. Total species richness was controlled predominantly by heat load index, mean annual precipitation, humus content and soil skeleton content. The positive role of soil pH was evident only for vascular plant species richness. Similar to other studies, we found that the importance of environmental factors strongly differed among taxonomic groups and across spatial scales, thus highlighting the need to study more than one taxon and more than one plot size to get a reliable picture. |
Databáze: | OpenAIRE |
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