TrofymowMooreTitusEtAl2002

Référence

Trofymow, J.A., Moore, T.R., Titus, B., Prescott, C., Morrison, I., Siltanen, M., Smith, S., Fyles, J.W., Wein, R., Camire, C., Duschene, L., Kozak, L., Kranabetter, M. and Visser, S. (2002) Rates of litter decomposition over 6 years in Canadian forests: Influence of litter quality and climate. Canadian Journal of Forest Research, 32(5):789-804.

Résumé

The effects of litter quality and climate on decomposition rates of plant tissues were examined using percent mass remaining (MR) data of 10 foliar litter types and 1 wood type during 6 years exposure at 18 upland forest sites across Canada. Litter-quality variables used included initial nutrient contents (N, P, S, K, Ca, Mg) and carbon fractions (determined by proximate analysis and 13C nuclear magnetic resonance spectroscopy). Climate variables used included mean annual temperature; total, summer, and winter precipitation; and potential evaptranspiration. A single-exponential decay model with intercept was fit using the natural logarithm of 0- to 6-year percent MR data (LNMR) for all 198 type by site combinations. Model fit was good for most sites and types (r2 = 0.64-0.98), although poorest for cold sites with low-quality materials. Multiple regression of model slope (Kf) and intercept (A) terms demonstrated the importance of temperature, summer precipitation, and the acid-unhydrolyzable residue to N ratio (AUR/N) (r2 = 0.65) for Kf, and winter precipitation and several litter-quality variables including AUR/N for A (r2 = 0.60). Comparison of observed versus predicted LNMR for the best overall combined models were good (r2 = 0.75-0.80), although showed some bias, likely because of other site- and type-specific factors as predictions using 198 equations accounted for more variance (r2 = 0.95) and showed no bias.

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@ARTICLE { TrofymowMooreTitusEtAl2002,
    AUTHOR = { Trofymow, J.A. and Moore, T.R. and Titus, B. and Prescott, C. and Morrison, I. and Siltanen, M. and Smith, S. and Fyles, J.W. and Wein, R. and Camire, C. and Duschene, L. and Kozak, L. and Kranabetter, M. and Visser, S. },
    TITLE = { Rates of litter decomposition over 6 years in Canadian forests: Influence of litter quality and climate },
    JOURNAL = { Canadian Journal of Forest Research },
    YEAR = { 2002 },
    VOLUME = { 32 },
    PAGES = { 789-804 },
    NUMBER = { 5 },
    NOTE = { 00455067 (ISSN) Cited By (since 1996): 38 Export Date: 26 April 2007 Source: Scopus CODEN: CJFRA doi: 10.1139/x01-117 Language of Original Document: English Correspondence Address: Trofymow, J.A.; Pacific Forestry Centre; Canadian Forest Service; 506 West Burnside Road Victoria, BC V8Z 1M5, Canada; email: ttrofymow@pfc.forestry.ca References: Aber, J.D., Melillo, J.M., McClaugherty, C.A., Predicting long-term patterns of mass loss, nitrogen dynamics, and soil organic matter formation from initial fine litter chemistry in temperate forest ecosystems (1990) Can. J. Bot., 68, pp. 2201-2208; Aerts, R., Climate, leaf litter chemistry and leaf-litter decomposition in terrestrial ecosystems - A triangular relationship (1997) Oikos, 79, pp. 439-449; (1997) Canadian ecodistrict climate normals 1961-1990, , Canadian Soil Information System, Eastern Cereals and Oilseeds Research Centre, Ottawa, Ont; Apps, M.J., Luxmoore, R.J., Nilsson, R.J., Sedjo, R.A., Schmidt, R., Simpson, L.G., Vinson, T.S., Boreal forests and tundra (1993) Water Air Soil Pollut., 70, pp. 39-53; Berg, B., Litter decomposition and organic matter turnover in northern forest soils (2000) For. Ecol. Manage., 133, pp. 13-22; Berg, B., Berg, M.P., Bottner, P., Box, E., Breymeyer, A., Calvo de Anta, R., Couteaux, M.-M., Virzo de Santo, A., Litter mass loss in pine forests of Europe and Eastern United States: Some relationships with climate and litter quality (1993) Biogeochemistry, 20, pp. 127-153; Berg, B., Johansson, M.-B., Meentemeyer, V., Litter decomposition in a climatic transect of Norway spruce forests: Substrate quality and climate control (2000) Can. J. For. Res., 30, pp. 1136-1147; Bunnell, F.L., Tait, D.E.N., Mathematical simulation models of decomposition processes (1974) Soil organisms and decomposition in the tundra, pp. 207-225. , Edited by A.J. Holding, O.W. Heal, S.F. Maclean, Jr., and P.W. Flanagan. International Biological Programme Tundra Biome Steering Committee, Stockholm, Sweden; Cou?teaux, M.-M., Bottner, P., Berg, B., Litter decomposition, climate and litter quality (1995) Trends Ecol. 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Precipitation 1951-1980, 3. , Canadian Climate Program, Atmospheric Environment Service, Environment Canada, Ottawa, Ont; (2000) National Climate Data Archive, , http://www.msc-smc.ec.gc.ca/climate/data_archives/, Meteorological Service of Canada, Ottawa, Ont; Giardina, C.P., Ryan, M.G., Evidence that decomposition rates of organic carbon in mineral soil do not vary with temperature (2000) Nature (London), 404, pp. 858-861; Grace, J., Raymnet, M., Respiration in balance (2000) Nature (London), 404, pp. 819-820; Houghton, J.T., Meira Fihlo, L.G., Bruce, J., Lee, H., Callander, B.A., Haites, E., Harris, N., Maskell, K., (1994) Radiative forcing of climate and an evaluation of the IPCC IS92 emission scenarios, , Special report of the IPCC Working Group I and III. 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Publ. 19; Meentemeyer, V., Macroclimate and lignin control of litter decomposition rates (1978) Ecology, 59, pp. 465-472; Melillo, J.M., Aber, J.D., Muratore, J.F., Nitrogen and lignin control of hardwood leaf litter decomposition dynamics (1982) Ecology, 63, pp. 621-626; Melillo, J.M., Aber, J.D., Linkins, A.E., Ricca, A., Fry, B., Nadelhoffer, K., Carbon and nitrogen dynamics along the decay continuum: Plant litter to soil organic matter (1989) Plant Soil, 115, pp. 189-198; Minderman, G., Addition, decomposition and accumulation of organic matter in forests (1968) Ecology, 56, pp. 355-362; Moore, T.R., Winter-time litter decomposition in subarctic woodlands (1983) Arct. Alp. 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    ABSTRACT = { The effects of litter quality and climate on decomposition rates of plant tissues were examined using percent mass remaining (MR) data of 10 foliar litter types and 1 wood type during 6 years exposure at 18 upland forest sites across Canada. Litter-quality variables used included initial nutrient contents (N, P, S, K, Ca, Mg) and carbon fractions (determined by proximate analysis and 13C nuclear magnetic resonance spectroscopy). Climate variables used included mean annual temperature; total, summer, and winter precipitation; and potential evaptranspiration. A single-exponential decay model with intercept was fit using the natural logarithm of 0- to 6-year percent MR data (LNMR) for all 198 type by site combinations. Model fit was good for most sites and types (r2 = 0.64-0.98), although poorest for cold sites with low-quality materials. Multiple regression of model slope (Kf) and intercept (A) terms demonstrated the importance of temperature, summer precipitation, and the acid-unhydrolyzable residue to N ratio (AUR/N) (r2 = 0.65) for Kf, and winter precipitation and several litter-quality variables including AUR/N for A (r2 = 0.60). Comparison of observed versus predicted LNMR for the best overall combined models were good (r2 = 0.75-0.80), although showed some bias, likely because of other site- and type-specific factors as predictions using 198 equations accounted for more variance (r2 = 0.95) and showed no bias. },
    KEYWORDS = { Biomass Carbon Data acquisition Decomposition Nuclear magnetic resonance spectroscopy Plants (botany) Precipitation (meteorology) Tissue Evaptranspiration Forestry climate decomposition ecological modeling forest litter phytochemistry Canada },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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