Seed bank offers potential for active restoration of mountain meadows
| Autor: | Kristin Ludewig, Annette Otte, Wiebke Hansen, Yves P. Klinger, R. Lutz Eckstein |
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| Rok vydání: | 2020 |
| Předmět: |
invasive Lupinus polyphyllus
Lupinus polyphyllus natural ecosystems semi‐ bank activation IUCN Red List Ecology Evolution Behavior and Systematics Legume fixing legume Nature and Landscape Conservation Ecology biology active restoration ddc:630 seed‐ Vegetation Miljövetenskap biology.organism_classification Structure and function Agronomy Habitat Germination meadow restoration nitrogen‐ mountain‐ Ordination Environmental Sciences |
| Zdroj: | Restoration Ecology. 29 |
| ISSN: | 1526-100X 1061-2971 |
| Popis: | The nitrogen-fixing legume Lupinus polyphyllus invaded semi-natural mountainous grasslands across Europe during the last decades. This invasion resulted in degraded habitats through changes in the structure and function of the mountain meadow vegetation. In our study, we analyzed (1) the effects of increasing cover of L. polyphyllus on the seed bank of mountain meadows, and (2) the potential of the seed bank of these stands for active restoration of mountain meadows in terms of species composition and number. We conducted a seed bank analysis on 84 plots with increasing cover of L. polyphyllus in three mountain-meadow types of the Rhon Biosphere Reserve, Germany. Seedlings from 119 species germinated from the seed bank samples, including 17 Red List species but only a few seedlings of L. polyphyllus. The species composition of the seed bank matched distinct patterns of the three meadow types, but differed from the species composition of the current aboveground vegetation in a nonmetric multidimensional scaling ordination. While the influence of L. polyphyllus on the current vegetation was visible, no effects on the seed bank were apparent. L. polyphyllus had no influence on total seed density, seed density of typical mountain-meadow species, or species numbers in the seed bank. Only the seeds of the Red List species were significantly related to the cover of L. polyphyllus. We conclude that the seed bank offers potential for active restoration of species-rich mountain meadows, but species absent from the seed bank have to be added by other measures. |
| Databáze: | OpenAIRE |
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