Biblio

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Author Title [ Type(Desc)] Year
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Journal Article
Johnson D., Moore L., Green S., Leith I.D, Sheppard L.J.  2010.  Direct and indirect effects of ammonia, ammonium and nitrate on phosphatase activity and carbon fluxes from decomposing litter in peatland. Environmental Pollution. 158(10):3157-3163.
Phuyal M., Artz R.RE, Sheppard L., Leith I.D, Johnson D..  2008.  Long-term nitrogen deposition increases phosphorus limitation of bryophytes in an ombrotrophic bog. Plant Ecology. 196(1):111-121.
Hogan E.J, Minnullina G., Sheppard L.J, Leith I.D, Crittenden P.D.  2010.  Response of phosphomonoesterase activity in the lichen Cladonia portentosa to nitrogen and phosphorus enrichment in a field manipulation experiment. New Phytologist. 186(4):926-933.