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Providing evidence to improve practice

Individual study: Restoration of Calluna heathland on a bracken Pteridium-infested site in north west England

Published source details

Snow C.S.R. & Marrs R.H. (1997) Restoration of Calluna heathland on a bracken Pteridium-infested site in north west England. Biological Conservation, 81, 35-42


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Use herbicide to control bracken Shrubland and Heathland Conservation

A replicated, randomized, controlled, paired study in 1992-1995 in a former heathland invaded by bracken Pteridium aquilinum in the Wirral, UK (Snow & Marrs 1997) found that spraying with herbicide to reduce the cover of bracken did not increase the number of common heather Calluna vulgaris seedlings relative to cutting. In eight of eight cases plots that were sprayed with herbicide did not have a significantly higher number of common heather seedlings than plots that were cut (herbicide: 8-20 seedlings/m2, cut: 1-76 seedlings/m2). Three 15 x 5 m plots were cut once a year, three plots were cut twice a year, and three plots were sprayed with the herbicide asulam. Cover of plants was assessed in three 1m2 quadrats in each plot in September 1993 and June 1994.

(Summarised by Phil Martin)

Cut to control bracken Shrubland and Heathland Conservation

A replicated, randomized, controlled, paired study in 1992-1995 in a former heathland invaded by bracken Pteridium aquilinum in the Wirral, UK (Snow & Marrs 1997) found that cutting to reduce the cover of bracken did not increase the number of common heather Calluna vulgaris seedlings relative to spraying with herbicide. In eight of eight cases plots that were cut did not have a significantly higher number of common heather seedlings than plots that were sprayed with herbicide (cut: 1-76 seedlings/m2, herbicide: 8-20 seedlings/m2). Three 15 x 5 m plots were cut once a year, three plots were cut twice a year, and three plots were sprayed with the herbicide asulam. Cover of plants was assessed in three 1m2 quadrats in each plot in September 1993 and June 1994.

(Summarised by Phil Martin)