%0 Journal Article %J Water, Air and Soil Pollution: Focus %D 2005 %T Early effects of atmospheric ammonia deposition on Calluna vulgaris (L.) hull growing on an ombrotrophic peat bog %A Carfrae, J. A. %A Sheppard, L. J. %A Raven, J. A. %A Leith, I. D. %A Stein, W. %A Crossley, A. %A Theobald, M. %K ammonia %K calluna vulgaris %K chlorophyll %K field simulation %K foliar N concentration %K photosystem II efficiency %K shoot growth %K Whim %B Water, Air and Soil Pollution: Focus %V 4 %P 229-239 %G eng %N 6