Study

Habitat management: a tool to modify ecosystem impacts of nitrogen deposition?

  • Published source details Power S.A., Barker C.G., Allchin E., Ashmore M.R. & Bell J. (2001) Habitat management: a tool to modify ecosystem impacts of nitrogen deposition? Scientific World Journal, 1, 714-721

Actions

This study is summarised as evidence for the following.

Action Category

Burn shrublands to reduce impacts of pollutants

Action Link
Shrubland and Heathland Conservation

Mow shrubland to reduce impacts of pollutants

Action Link
Shrubland and Heathland Conservation
  1. Burn shrublands to reduce impacts of pollutants

    A randomized, replicated, controlled study in 1998-2000 in a lowland heathland site in Surrey, UK (Power et al. 2001) found that prescribed burning to reduce the impact of nitrogen deposition did not alter the shoot length of common heather Calluna vulgaris or the number of purple moor grass Deschampsia flexuosa seedlings when compared to mowing. In areas that were burned common heather shoot length did not differ significantly (13cm) from shoot length in areas that were mowed (13-15 cm). The number of purple moor grass seedlings did not differ significantly between areas where prescribed burning was used and areas that were mowed (burned: 1.6 seedlings/plot; mowed: 1-1.5 seedlings/plot). In January 1998 four 4 x 4 m plot were established. Nitrogen was added to each plot as a mist of ammonium sulfate to simulate nitrogen deposition. Each plot was divided into four subplots, two of which were mowed, one of which was burned using prescribed burning methods, and one of which was burned to simulate a wildfire. Shoot length and cover were measured in 25 points in each subplot in October 1998-2000. Seedlings establishment was recorded in September 1999.

  2. Mow shrubland to reduce impacts of pollutants

    A randomized, replicated, controlled study in 1998-2000 in a lowland heathland site Surrey, UK (Power et al. 2001) found that mowing to reduce the impact of nitrogen deposition did not alter the shoot length of common heather Calluna vulgaris or the number of purple moor grass Deschampsia flexuosa seedlings when compared to prescribed burning. In areas that were mowed common heather shoot length did not differ significantly (13-15 cm) from shoot length in areas where prescribed burning was used (13 cm). The number of purple moor grass seedlings did not differ significantly between areas that were mowed and areas that where prescribed burning was used (mowed: 1-1.5 seedlings/plot; burned: 1.6 seedlings/plot). In January 1998 four 4 x 4 m plot were established. Nitrogen was added to each plot as a mist of ammonium sulfate to simulate nitrogen deposition. Each plot was divided into four subplots, two of which were mowed, one of which was burned using prescribed burning methods, and one of which was burned to simulate a wildfire. Shoot length and cover were measured in 25 points in each subplot in October 1998-2000. Seedlings establishment was recorded in September 1999.

Output references

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