The impact of an invasive plant changes over time
| Autor: | Jan Pergl, Petr Pyšek, Tereza Klinerová, Petr Dostál, Jana Müllerová |
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| Rok vydání: | 2013 |
| Předmět: |
geography
geography.geographical_feature_category biology Heracleum Ecology food and beverages Introduced species Plant community Poaceae biology.organism_classification Invasive species Grassland Time Plant ecology Heracleum mantegazzianum Animals Dominance (ecology) Species richness Introduced Species Ecosystem Soil Microbiology Ecology Evolution Behavior and Systematics |
| Zdroj: | Ecology Letters. 16:1277-1284 |
| ISSN: | 1461-023X |
| DOI: | 10.1111/ele.12166 |
| Popis: | Many exotic plant invaders pose a serious threat to native communities, but little is known about the dynamics of their impacts over time. In this study, we explored the impact of an invasive plant Heracleum mantegazzianum (giant hogweed) at 24 grassland sites invaded for different periods of time (from 11 to 48 years). Native species' richness and productivity were initially reduced by hogweed invasion but tended to recover after ~30 years of hogweed residence at the sites. Hogweed cover declined over the whole period assessed. A complementary common garden experiment suggested that the dynamics observed in the field were due to a negative plant-soil feedback; hogweed survival and biomass, and its competitive ability were lower when growing in soil inocula collected from earlier-invaded grasslands. Our results provide evidence that the initial dominance of an invasive plant species and its negative impact can later be reversed by stabilising processes. |
| Databáze: | OpenAIRE |
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