RUINED DRY STONE WALL

Ruined dry stone wall: a traditional stone wall where the built structure has collapsed by 50% or more.
Habitat examples: Click on an image to enlarge.
     
Ruined dry stone wall: distribution in NI.
Ruined dry stone walls have a length of 0.2 km/km2 (3,228 km) in NI and occur largely in the uplands 0.5 km/km2 (2,140 km). The Mourne AONB (1.1 km/km2) and the Antrim Coast & Glens AONB (1.0 km/km2) have a greater density.
Ruined dry stone wall: predicted distribution map (1998).
Ruined dry stone wall: net change 1991 - 1998.
Ruined dry stone walls have decreased significantly in length by 11% (-400 km) in NI, notably in the Antrim Coast & Glens AONB (-25%, -268 km).
Ruined dry stone wall: summary of losses and gains 1991 - 1998.

Ruined dry stone wall: losses and gains 1991 - 1998.
Loss of Ruined dry stone walls was mainly by removal. Field Boundaries in the losses and gains table below are linked to their descriptors and NI data.
 
Losses
(1991 - 98)		 Field
Boundaries		 Gains
(1991 - 98)
km % km %
73 2 *     Hedge 97 <1 *
170 5 *     Dry stone wall 365 6 *
6 <1       Mortared wall 0    
0         Earth bank 29 <1  
89 2 *     Fence 0    
554 15 *     No Field Boundary 0 -  
Note :   % = percentage of baseline length
             * = indicates significant transition (p = 0.05)
 
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