Forest nitrogen cycling

For instance, clearing tropical forests in the Amazon basin for pasture alters rates of soil nitrogen cycling (Table 5). 

Schulze, E-D. (2000). Carbon and nitrogen cycling in European forest ecosystems. Berlin Springer, 500 p. 

Fahey, T. J., J. B. Yavitt, J. A. Pearson, and D. H. McKnight. 1985. The nitrogen cycle in lodge-pole pine forests, southeastern Wyoming. Biogeochemistry 1 257—275. 

Gundersen, P., B. A. Emmett, O. J. Kjonaas, C. J. Koopmans, and A. Tietema. 1998. Impact of nitrogen deposition on nitrogen cycling in forests A synthesis of NITREX data. Forest Ecology and Management 101 37-55. 

Tank, J. L., J. L. Meyer, D. M. Sanzone, P. J. Mulholland, J. R. Webster, B. J. Peterson, W. M. Wolheim, and Leonard, N. E. 2000. Analysis of nitrogen cycling in a forest stream during autumn using a 15N-tracer addition. Limnology and Oceanography 45 1013-1029. 

Boggs, J. L. (2005). Tree growth, foliar chemistry, and nitrogen cycling across a nitrogen deposition gradient in southern Appalachian deciduous forests. Can. J. Forest Res. Rev. Can. Recherche Forestiere 35(8), 1901-1913. 

Including food-web processes in quantitative models of carbon and nitrogen cycling of forest ecosystems. The competition between sapro-trophic and mycorrhizal fungi for resources is a key aspect of belowground functioning (Lindahl et al., 2002). Quite detailed computer models... 

Wallenda, T., Stober, C., Hogbom, L. et al. (2000). Nitrogen uptake processes in roots and mycorrhizas. In Carbon and Nitrogen Cycling in European Forest Ecosystems, Ecological Studies 142, ed. E. D. Schulze. Berlin Springer-Verlag, pp. 122-43. 

Aber, J. D. (1992). Nitrogen cycling and nitrogen saturation in temperate forest ecosystems. Trends in Ecology and Evolution, 1, 220-3. 

Hart, S. C. Firestone, M. K. (1991). Forest floor-mineral soil interactions in the internal nitrogen cycle of an old-growth forest. Biogeochemistry, 12, 103-28. 

Hirobe, M., Koba, K. Tokuchi, N. (2003). Dynamics of the internal soil nitrogen cycles under moder and mull forest floor types on a slope in a Cryptomeria japonica D. Don plantation. Ecological Research, 18, 5-64. 

Tamm, C. O. (1982). Nitrogen cycling in undisturbed and manipulated boreal forest. 

Vestgarden, L. S., Nilsen, P. Abramasen, G. (2004). Nitrogen cycling in Pinus sylvestris stands exposed to different nitrogen inputs. Scandinavian Journal of Forest Research, 19, 38-47. 

Pastor J. and Post W. M. (1986) Influence of climate, soil moisture, and succession of forest carbon and nitrogen cycles. Biogeochemistry 2, 3-27. 

Goodale C. L. and Aber J. D. (2001) The long-term effects of land-use history on nitrogen cycling in northern hardwood forests. Ecol. Appl. 11, 253-261. 

From these results we can conclude that nitrogen is relatively available in soils of Tropical Rain Forest ecosystems and that forest soils mineralize and nitrify large amounts of nitrogen. P. Vitousek andR. Sanford have shown similar results earlier in 1986 studying nitrogen cycling in moist tropical forests. 

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