Study

The effects of peatland restoration on water-table depth, elemental concentrations, and vegetation: 10 years of changes

  • Published source details Haapalehto T.O., Vasander H., Jauhiainen S., Tahvanainen T. & Kotiaho J.S. (2010) The effects of peatland restoration on water-table depth, elemental concentrations, and vegetation: 10 years of changes. Restoration Ecology, 19, 587-598.

Actions

This study is summarised as evidence for the following.

Action Category

Cut/remove/thin forest plantations and rewet peat

Action Link
Peatland Conservation
  1. Cut/remove/thin forest plantations and rewet peat

    A before-and-after, site comparison study in 1994–2005 in two peatlands (one bog, one fen) in Finland (Haapalehto et al. 2010) found that restoration by tree removal and rewetting increased the abundance of wetland-characteristic plant species and some key peatland species. The overall plant community composition changed over ten years. Restored (clear-cut/rewetted) areas accumulated wetland-characteristic species, whilst unrestored (forested/drained) areas accumulated dryland- and forest-characteristic species (data reported as a graphical analysis). Specifically, cover of sheathed cottongrass Eriophorum vaginatum increased more in restored areas (from 4–11% before restoration to 20–21% ten years after) than unrestored areas (from 1–3% to 1–7%). In the fen, forest moss cover decreased in the restored area (from 17 to 4%) but increased in the unrestored area (from 26 to 42%). In the bog, Sphagnum moss cover increased more in the restored area (data not reported). In 1995, 10 ha of bog and 1 ha of fen were restored by clearing all trees/shrubs and blocking drainage ditches. In the restored areas, the water table was 5–17 cm below the peat surface (during summer). Comparisons were made with unrestored areas in each peatland (forested and drained; water table 23–45 cm below surface). In July 1994–1997 and 2005, vegetation cover was estimated in 9–12 permanent quadrats (0.5 m2) in each area.

    (Summarised by: Nigel Taylor)

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust