Peatland Ecology Research Group (PERG)
Université Laval
Plant diversity

PERG's researches on plant diversity are going under various projects, either in the studies on natural regeneration and restoration of peatlands after peat extraction, on biological invasions, and on conservation. This work is mainly conducted by three researchers: Claude Lavoie, Monique Poulin and Line Rochefort.



Variety of lichens and mosses in the Bois-des-Bel peatland, Québec (Photo: F. Isselin-Nondedeu).
Plant diversity 1994


Here is an overview of various PERG's projects on plant diversity.

Vegetation of mined peatlands

An extensive study on the vegetation of mined peatlands was undertaken in 1994 and 1995 in a fifty of peatlands in Quebec and New Brunswick (see Poulin et al. 2005). In 2005 and 2006, the PERG again visited the sites to assess changes in vegetation during the early stages of spontaneous recolonization. Among the data included vegetation structure and plant species richness. One objective of this study is to determine the influence of local environment and landscape composition on the recovery process.

Ecological diversity of peatlands in the Bas-Saint-Laurent region

Daniel Lachance studied as part of his PhD project the diversity of peatlands in one region of Quebec where there are natural and mined peatlands in an agricultural landscape. The main objective of its work was to understand how the isolation of an ecosystem in an area disturbed by human activities alter its ecological diversity.

See the following list of publications related to this project (thesis and articles of Daniel Lachance).

Biological Invasions

The team of Claude Lavoie (École supérieure d'aménagement du territoire et du développement régional, Université Laval) is following since several years the invasive species that inhabit peatlands in natural regeneration and in restoration. Species such as cottongrasses (Eriophorum spp.), birches (Betula spp.) and jack pine (Pinus banksiana) are subject to regular monitorings.

Invasion by cotton-grasses (Eriophorum spp.) at St-Henri peatland (Québec). (Photo: C. Lavoie.)

For more information on the work on biological invasions and conservation, see the website of the Research Laboratory on Invasive Plants (LAREPE).

Satellite imagery and plant diversity of peatlands

During his PhD, Monique Poulin (Département de phytologie, Université Laval), used satellite remote sensing for mapping habitats of natural bogs. It noted that the habitats identified through satellite images better reflect the variability associated with the distribution of species and vegetation structure that commonly measured environmental variables.


See below for publications related to this project: the PhD thesis of Monique Poulin (2002) and the article by Poulin et al. (2002: From satellite imagery to peatland vegetation diversity: How reliable are habitat maps?).

Biodiversity and restoration of peatland pools

Natacha Fontaine explored during its control of plant diversity edges of ponds and development of restoration techniques for this biotope. The results show that inventories of pools increases the richness of plant natural peatlands.

Peatland pool (Photo: PERG).

See below for publications related to this project: the master thesis of Natacha Fontaine (2008) and the article by Fontaine et al. (2007: Plant diversity associated with pools in natural and restored peatlands).
Project's publication(s) & communication(s)


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