Reintroduction of fen plant communities on a degraded minerotrophic peatland
| Autor: | Sandrine Hugron, Stéphanie Boudreau, Rémy Pouliot, Line Rochefort, Vicky Bérubé, Marie-Claire LeBlanc |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
geography Peat geography.geographical_feature_category Ecology Minerotrophic 010604 marine biology & hydrobiology Phosphorus chemistry.chemical_element Plant community Plant Science Biology 010603 evolutionary biology 01 natural sciences chemistry Botany Ecosystem Bog Ecology Evolution Behavior and Systematics |
| Zdroj: | Botany. 94:1041-1051 |
| ISSN: | 1916-2804 1916-2790 |
| Popis: | We have developed an approach to restore bogs after peat extraction, but, when sedge-peat layers are exposed, the minerotrophic remnant peat conditions require restoration towards a fen ecosystem. Three restoration techniques, all including rewetting actions, were tested to assist fen vegetation recovery. None of the restoration techniques were effective at establishing fen bryophytes. However, for vascular plants, two techniques gave promising results in terms of species composition, although the vascular plant cover remained lower than in the reference fens. Depending on the site conditions, we suggest applying two restoration techniques to restore peatlands in areas of exposed sedge peat. In areas where sparse cover of fen species may have spontaneously established, rewetting should be carried out to raise water levels and create favourable conditions for their expansion. In areas covered with undesirable species or with inadequate topography for rewetting, surface peat should be remodeled and vegetation introduced. Since mechanized diaspore transfer did not result in a satisfactory cover of fen plants, other means of introduction could be considered, alone or in combination. A complementary fertilization experiment showed that fertilization with phosphorus could be an effective solution to enhance the establishment of mechanically introduced plant diaspores. |
| Databáze: | OpenAIRE |
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