Study

Catchment liming to restore degraded, acidified heathlands and moorland pools

  • Published source details Dorland E., van den Berg L.J.L., Brouwer E., Roelofs J.G.M. & Bobbink R. (2005) Catchment liming to restore degraded, acidified heathlands and moorland pools. Restoration Ecology, 13, 302-311.

Summary

Action: Add lime or similar chemicals

A replicated, before-and-after study in 1994–2003 of pools in two heathlands in the Netherlands (Dorland et al. 2005) reported that following liming, the abundance of plants characteristic of soft-water pools increased, whilst undesirable rushes and acid-tolerant mosses disappeared. Statistical significance was not assessed. In one site, the number of pools with >25% coverage of floating club rush Eleogiton fuitans, bog pondweed Potamogeton polygonifolius and white water crowfoot Ranunculus ololeucos increased: from four pools three years before liming, to 14 pools six years after liming. Bulbous rush Juncus bulbosus and Sphagnum mosses disappeared from these pools following lime application (data not reported). In the other site, the coverage of floating water plantain Luronium natans increased tenfold over the same time period (data not reported). Methods: In November–December 1997, Dolokal lime was added (2.3–6.3 tons/ha) to acidified dry heathland above pools. Topsoil had been removed in 1990. Vegetation coverage was mapped in 1994 and 2003.

 

 

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