1. Shaver, G. R., Nadelhoffer, K. J. & Giblin, A. E. in Quantitative Methods in Landscape Ecology (eds Turner, M. G. & Gardner, R. H.) 105–125 (Springer, New York, 1990).
2. Kielland, K. Processes Controlling Nitrogen Release and Turnover in Arctic Tundra thesis, Univ. Alaska (1990).
3. Haag, R. W. Can. J. Bot. 52, 103–116 (1974).
4. Shaver, G. R., Chapin III, F. S. & Gartner, B. L. J. Ecol. 74, 257–278 (1986).
5. Stribley, D. P. & Read, D. J. New Phytol. 86, 365–371 (1980).