caa a22 4500 467885206 CHVBK 20180406152732.0 cr unu---uuuuu 170328e20060201xx s 000 0 eng 10.1007/s10021-004-0026-x doi (NATIONALLICENCE)springer-10.1007/s10021-004-0026-x Patterns of Carbon, Nitrogen and Phosphorus Dynamics in Decomposing Foliar Litter in Canadian Forests [Elektronische Daten] [T. R. Moore, J. A. Trofymow, C. E. Prescott, J. Fyles, B. D. Titus] We examined the patterns of nitrogen (N) and phosphorus (P) gain, retention or loss in ten foliar tissues in a litterbag experiment over 6 years at 18 upland forest sites in Canada, ranging from subarctic to cool temperate. N was usually retained in the decomposing litter until about 50% of the original C remained. The peak N content in the litter was observed at between 72 and 99% of the original C remaining, with C:N mass quotients between 37 and 71 (mean 55). The rate of N release from the litters was not related to the original N concentration, which may be associated with the generally narrow range (0.59-1.28% N) in the litters. P was immediately lost from all litters, except beech leaves, with critical litter C:P mass quotients for P release being in the range 700-900. The rate of P loss was inversely correlated with the original litter P concentration, which ranged from 0.02 to 0.13%. The soil underlying the litterbags influenced the pattern of N and P dynamics in the litters; there were weak correlations between the N and P remaining at 60% C remaining in the litters and the C:N and C:P quotients of the surface layer of the soil. There was a trend for higher N and P retention in the litter at sites with lower soil C:N and N:P quotients, respectively. Although there was a large variation in C:N, C:P and N:P quotients in the original litters (29-83, 369-2122 and 5-26, respectively), and some variation in the retention or loss of N and P in the early stages of decomposition, litters converged on C:N, C:P and N:P quotients of 30, 450 and 16, when the C remaining fell below 30%. These quotients are similar to that found in the surface organic matter of these ecosystems. Springer Science+Business Media, Inc., 2006 litter nationallicence forests nationallicence decomposition nationallicence carbon nationallicence nitrogen nationallicence phosphorus nationallicence lignin nationallicence Moore T. R. Department of Geography and Centre for Climate and Global Change Research, McGill University, Montréal, Quebec, Canada aut Trofymow J. A. Pacific Forestry Centre, Canadian Forest Service, Victoria, British Columbia, Canada aut Prescott C. E. Faculty of Forestry, University of British Columbia, Vancouver, British Columbia, Canada aut Fyles J. Department of Natural Resource Science, McGill University, Montréal, Quebec, Canada aut Titus B. D. Pacific Forestry Centre, Canadian Forest Service, Victoria, British Columbia, Canada aut Ecosystems Springer-Verlag; www.springer-ny.com 9/1(2006-02-01), 46-62 1432-9840 9:1<46 2006 9 10021 https://doi.org/10.1007/s10021-004-0026-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10021-004-0026-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Moore T. R. Department of Geography and Centre for Climate and Global Change Research, McGill University, Montréal, Quebec, Canada aut NATIONALLICENCE 700 1- Trofymow J. A. Pacific Forestry Centre, Canadian Forest Service, Victoria, British Columbia, Canada aut NATIONALLICENCE 700 1- Prescott C. E. Faculty of Forestry, University of British Columbia, Vancouver, British Columbia, Canada aut NATIONALLICENCE 700 1- Fyles J. Department of Natural Resource Science, McGill University, Montréal, Quebec, Canada aut NATIONALLICENCE 700 1- Titus B. D. Pacific Forestry Centre, Canadian Forest Service, Victoria, British Columbia, Canada aut NATIONALLICENCE 773 0- Ecosystems Springer-Verlag; www.springer-ny.com 9/1(2006-02-01), 46-62 1432-9840 9:1<46 2006 9 10021 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer