Impact Type: Deposition of pollutant
Woolly willow (Salix lanata) is a shrub willow of wet mountain rocks. It is a UK BAP species which may be sensitive to N deposition. Increasing the N content of this shrub will undoubtably increase the likelihood of damage from herbivores, pests and pathogens. Willows are very sensitive to infection by rusts.
The more widespread related Dwarf Willow (S. herbacea) has disappeared from a number of sites in the northern Pennines, an area subject to high N deposition (Perring and Walters 1976). S. lanata is cultivated as a garden shrub where the impact of N is negligible suggesting damage is probably indirect from abiotic causes.
|Habitat/ Ecosystem Type||Eunis Code||Critical Load/ Level||Status||Reliability||Indication of exceedance||Reference|
|Moss and lichen dominated mountain summits||E4.2||
5-10 kg N ha-1 year-1
|UNECE 2010 - Noordwijkerhout workshop||quite reliable||
Effects upon bryophytes or lichens.