TY - Generic T1 - Growth, nitrogen uptake, and resource allocation in the two tripartite lichens Nephroma arcticum and Peltigera aphthosa during nitrogen stress Y1 - 2002 A1 - Dahlmann, L. A1 - Näsholm, T. A1 - Palmqvist, K. JF - New Phytologist VL - 153 ER -