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2025-10-07

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cc-by (c) Pladevall-Izard, E. et al., 2025
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/223749

Restoring High Mountain Sphagnum Communities in the Central Pyrenees

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https://doi.org/10.3390/ecologies6040067

Abstract

A handful of Sphagnum species and their ecosystems find their southernmost occurrence in the Pyrenees, and these small, relict units are endangered through anthropic activities and climatic change. A number of hydropower reservoirs covered former mire systems with water or let them ashore. These infrastructures will eventually become useless and abandoned, and the mires could possibly be restored, but there have been no known experiments in the Pyrenees in this field. The removal of the dam of a small reservoir in the Central Pyrenees in 2012 uncovered bare ground that was appropriate for testing mire restoration. In 2017, we started the restoration of two Habitats of Community Interest (HCIs), i.e., transition mires and quaking bogs (HCI 7140) and active raised bogs (HCI 7110*). To restore HCI 7140, we set a Carex rostrata population by planting cuttings and then small tufts of two Sphagnum species within the sedge sward. In parallel, we set small clumps of two other Sphagnum species intended to grow into hummocks (HCI 7110*). After seven growing seasons, HCI 7140 reached a good progression level, with a prosperous C. rostrata sward and progressive expansion of the Sphagnum populations. HCI 7110* turfs had varying performance, exhibiting moderate survivorship and positive expansion of the remaining turfs. The varying performance of the restored populations illustrates the possibilities of restoring mire communities in suboptimal environments. Interestingly, such restorative actions are appropriate for enhancing populations of species under threat, such as Sphagnum divinum.

Subject

Zones humides, Seguiment biològic, Pirineu axial

Subject (English)

Wetlands, Biological monitoring, Central Pyrenees

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Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
Articles publicats en revistes (Institut de Recerca de la Biodiversitat (IRBio))

Citation

PLADEVALL IZARD, Eulàlia, et al. Restoring High Mountain Sphagnum Communities in the Central Pyrenees. Ecologies. 2025. Vol. 6, num. 4, pags. 1-23. [consulted: 16 of August of 2026]. Available at: https://hdl.handle.net/2445/223749

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