Climate fluctuations drive the recruitment and growth of temperate grassland plants
| Autor: | Francisco Emmanuel Méndez‐Castro, Jandova, Milan Chytrý, Jitka Klimešová, Jan Altman, Luisa Conti, Jiří Doležal, David Zelený, Gianluigi Ottaviani |
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| Rok vydání: | 2021 |
| Předmět: |
2. Zero hunger
0106 biological sciences education.field_of_study geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Ecology Global warming Population Biodiversity food and beverages Plant community 15. Life on land 010603 evolutionary biology 01 natural sciences Grassland 13. Climate action Temperate climate Environmental science Forb Ecosystem education 0105 earth and related environmental sciences |
| Popis: | Recent climate warming is associated with the increasing magnitude and frequency of extreme events, including heatwaves and drought periods worldwide. Such events can have major effects on the species composition of plant communities, hence on biodiversity and ecosystem functioning. Here we studied responses of Central European dry grassland plants to fluctuating temperature and precipitation over the last thirty years with monthly temporal resolution. We assessed the seasonal and annual dynamics of plant recruitment and growth based on the analysis of annual growth rings from the root collar. Although most studies so far applied such methods to trees and shrubs, we focused on typical grassland plants, two forbs and two chamaephytes. We related the recruitment and annual growth to monthly and annual precipitation, temperature and aridity between 1991 and 2019. We revealed species-specific responses, namely the (i) recruitment of deep-rooted, heavy-seeded species was positively affected by precipitation in both late winter-early spring and summer, whereas recruitment of shallow-rooted, light-seeded species was weakly influenced by climate fluctuations; (ii) growth of shallow-rooted species was more adversely affected by high summer temperature and drought than the growth of deep-rooted species. The population age structure of all the studied species was affected by the climate of the past decades. Most individuals established in the wet period of the 2000s, fewer in the precipitation-poorer 1990s, and the establishment was considerably reduced in the dry and warm period of the 2010s. Our findings indicate that the change towards warmer and drier climate has a profound effect even on drought-adapted ecosystems such as temperate dry grasslands. However, plant responses to various climatic extremes are species-specific, depending on their characteristics, such as life form or rooting depth. Consequently, the ongoing and anticipated climate warming will likely result in complex changes in species composition and other ecosystem properties of temperate grasslands |
| Databáze: | OpenAIRE |
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