BradleyFylesTitus1997

Référence

Bradley, R.L., Fyles, J.W., Titus, B. (1997) Interactions between Kalmia humus quality and chronic low C inputs in controlling microbial and soil nutrient dynamics. Soil Biology and Biochemistry, 29(8):1275-1283.

Résumé

Glucose-C was repeatedly added to organic Kalmia humus from two sites of contrasting spruce productivity (i.e. rich and poor) and basal respiration, microbial biomass and metabolic quotient (qCO2) were measured over a 438 day incubation and compared to post-incubation soil mineral-N pools, anaerobic N mineralization rates, the nutritional deficiency index (NDI) of soil microbial communities and final soil weights. Repeated measures analysis of variance revealed a strong overall soil effect on basal respiration and microbial biomass and a strong overall glucose effect on microbial biomass and qCO2, whereas the analysis of within-subjects effects revealed strong interactions of the time factor with both soil and glucose on all three measurements. In the poor soil, glucose supported high microbial biomass and therefore low qCO2, until the end of the incubation, whereas in the rich soil, glucose also supported high microbial biomass and low qCO2, but these converged towards control (i.e. no glucose) values before the end of the incubation. Mineral-N pools were high in the rich control treatment only, whereas the NDI was high only in the rich + glucose treatment. Anaerobic N mineralization rates did not differ statistically among treatments. Glucose significantly decreased mass loss in the rich soil but not in the poor soil. The data support the conclusion that glucose addition to the rich soil inhibits microbial utilization of nutrient-containing soil OM for maintenance energy thus exacerbating nutritional deficiencies, whereas glucose addition to the poor soil does not affect soil N cycling. Based on results of analytical pyrolysis performed on soil subsamples prior to the incubation, we hypothesize that higher amounts of tannins measured in the poor humus may have chemically immobilized and ultimately controlled availability of N.

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@ARTICLE { BradleyFylesTitus1997,
    AUTHOR = { Bradley, R.L. and Fyles, J.W. and Titus, B. },
    TITLE = { Interactions between Kalmia humus quality and chronic low C inputs in controlling microbial and soil nutrient dynamics },
    JOURNAL = { Soil Biology and Biochemistry },
    YEAR = { 1997 },
    VOLUME = { 29 },
    PAGES = { 1275-1283 },
    NUMBER = { 8 },
    NOTE = { 00380717 (ISSN) Cited By (since 1996): 13 Export Date: 26 April 2007 Source: Scopus CODEN: SBIOA doi: 10.1016/S0038-0717(97)00018-7 Language of Original Document: English Correspondence Address: Bradley, R.L.; Department of Forest Sciences; Faculty of Forestry; University of British Columbia Vancouver, BC V6T 1Z4, Canada References: Anderson, T.H., Domsch, K.H., A physiological method for the quantitative measurement of microbial biomass in soil (1978) Soil Biology \& Biochemistry, 10, pp. 215-221; Ba?a?th, E., Lohm, U., Lundgren, B., Rosswall, T., So?derstro?m, B., Sohlenius, B., Wire?n, A., The effect of nitrogen and carbon supply on the development of soil organism populations and pine seedlings: A microcosm experiment (1978) Oikos, 31, pp. 153-163; Bachmann, G., Kinzel, H., Physiological and ecological aspects of the interactions between plant roots and rhizosphere soil (1992) Soil Biology \& Biochemistry, 24, pp. 543-552; Bradley, R.L., Fyles, J.W., Growth of paper birch (Betula papyrifera) seedlings increases soil available-C and microbial acquisition of soil-nutrients (1995) Soil Biology \& Biochemistry, 27, pp. 1565-1571; Bradley, R.L., Fyles, J.W., A kinetic parameter describing soil available carbon and its relationship to rate increase in C mineralization (1995) Soil Biology \& Biochemistry, 27, pp. 167-172; Clarholm, M., Interactions of bacteria, protozoa and plants leading to mineralization of soil nitrogen (1985) Soil Biology \& Biochemistry, 17, pp. 181-187; Dalenburg, J.W., Jager, G., Priming effect of small glucose additions to 14C-labeled soil (1981) Soil Biology \& Biochemistry, 13, pp. 219-223; Dalenburg, J.W., Jager, G., Priming effect of some organic additions to 14C-labeled soil (1989) Soil Biology \& Biochemistry, 21, pp. 443-448; Damman, A.W.H., Effect of vegetation changes on the fertility of a Newfoundland forest site (1971) Ecological Monographs, 41, pp. 253-270; Davies, R.I., Coulson, C.B., Lewis, D.A., Polyphenols in plant, humus, and soil. IV. Factors leading to increase in biosynthesis of polyphenol in leaves and their relationship to mull and mor formation (1964) Journal of Soil Science, 15, pp. 310-318; De Montigny, L.E., Weetman, G.F., The effects of ericaceous plants on forest productivity (1990) IUFRO Working Party S1.05-12 Symposium Proceedings, pp. 83-90. , The Silvics and Ecology of Boreal Spruces (B. D. Titus, M. B. Lavigne, P. F. Newton and, W. J. Meades, Eds), Newfoundland, 12-17 August, 1989. Forestry Canada Information Report N-X-271; Donnelly, P.K., Entry, J.A., Crawford, D.L., Degradation of atrazine and 2,4-dichlorophenoxyacetic acid by mycorrhizal fungi at three nitrogen concentration in vitro (1993) Applied and Environmental Microbiology, 59, pp. 2642-2647; Ecoclimatic regions of Canada, first approximation. Ecoregions working group of the Canada committee on ecological land classification (1989) Ecological Land Classification Series, No. 23, , Environment Canada, Ottawa; Fliessbach, A., Martens, R., Reber, H.H., Soil microbial biomass and microbial activity in soils treated with heavy metal contaminated sewage sludge (1994) Soil Biology \& Biochemistry, 26, pp. 1201-1205; Fyles, J.W., Bradley, R.L., A self-sustaining system for long-term incubations with the capability for repeated estimation of microbial biomass (1992) Soil Biology \& Biochemistry, 24, pp. 721-723; Gershenzon, J., Changes in the levels of plant secondary metabolites under water and nutrient stress (1983) Recent Advances in Phytochemistry, 18, pp. 273-320; Handley, W.R.C., Further evidence for the importance of residual leaf protein complexes in litter decomposition and the supply of nitrogen for plant growth (1961) Plant and Soil, 15, pp. 37-73; Heng, S., Goh, K.M., Organic matter in forest soils and the mineralization of soil carbon and nitrogen (1984) Soil Biology \& Biochemistry, 16, pp. 201-202; Huynh, H., Feldt, L.S., Estimation of the box correction for degrees of freedom for sample data in randomized block and split-plot designs (1976) Journal of Educational Statistics, 1, pp. 69-82; Janzen, R.A., Cook, F.D., McGill, W.B., Compost extract added to microcosms may simulate community-level controls on soil microorganisms involved in element cycling (1995) Soil Biology \& Biochemistry, 27, pp. 181-188; Kirschbaum, M.U.F., The temperature dependence of soil organic matter decomposition, and the effect of global warming on soil organic C storage (1995) Soil Biology \& Biochemistry, 27, pp. 753-760; Mallik, A.U., Ecology of a forest weed of Newfoundland: Vegetative regeneration strategy of Kalmia angustifolia (1992) Canadian Journal of Botany, 71, pp. 161-166; Molina, J.A.E., Hadas, A., Clapp, C.E., Computer simulation of nitrogen turnover in soil and priming effect (1990) Soil Biology \& Biochemistry, 22, pp. 349-353; Myrold, D.D., Relationship between microbial biomass and a nitrogen availability index (1987) Soil Science Society of America Journal, 51, pp. 1047-1049; Prescott, C.E., Kumi, J.W., Weetman, G.F., Long-term effects of repeated N fertilization and straw application in a jack pine forest. 2. Changes in the ericaceous ground vegetation (1995) Canadian Journal of Forest Research, 25, pp. 1984-1990; (1984) SAS/EST Users Guide. Statistics Version 5, , SAS Institute Inc, Cary, NC; Schimel, J.P., Helfer, S., Alexander, I.J., Effects of starch additions on N turnover in Sitka spruce forest floor (1992) Plant and Soil, 139, pp. 139-143; Smith, J.L., Paul, E.A., The significance of soil microbial biomass estimations (1990) Soil Biochemistry, 6, pp. 357-396. , J. M. Bollag and G. Stotsky, Eds, Marcel Dekker, New York; Timmer, V.R., Folk, R.S., Evaluating peat as a growing medium for jack pine seedlings. 2. Fertlizerbased indices (1992) Canadian Journal of Forest Research, 22, pp. 950-954; Titus, B.D., Pike, D.B., Gillespie, R.T., Helleur, R., Zhang, H., Using remote sensing to monitor Kalmia angustifolia encroachment on disturbed forest sites in central Newfoundland (1993) The Scientific Challenge of Our Changing Environment, pp. 12-13. , J. Hall and M. Wadleigh, Eds, Canadian Global Change Program, Incidental Report Series no. IR93-2. Canadian Global Change Program Secretariat, Ottawa; Titus, B.D., Sidhu, S.S., Mallik, A.U., A summary of some studies on Kalmia angustifolia L.: A problem species in Newfoundland forestry (1995) Canadian Forest Service, Newfoundland and Labrador Region Information Report N-X-296; Wander, M.M., Traina, S.J., Stinner, B.R., Peters, S.E., Organic and conventional management effects on biologically active soil organic matter pools (1994) Soil Science Society of America Journal, 58, pp. 1130-1139; Waring, S.A., Bremner, J.M., Ammonium production in soil under waterlogged conditions as an index of nitrogen availability (1964) Nature, 201, pp. 951-952; Zhu, H., Mallik, A.U., Interactions between Kalmia and black spruce: Isolation and identification of allelopathic compounds (1994) Journal of Chemical Ecology, 20, pp. 407-421. },
    ABSTRACT = { Glucose-C was repeatedly added to organic Kalmia humus from two sites of contrasting spruce productivity (i.e. rich and poor) and basal respiration, microbial biomass and metabolic quotient (qCO2) were measured over a 438 day incubation and compared to post-incubation soil mineral-N pools, anaerobic N mineralization rates, the nutritional deficiency index (NDI) of soil microbial communities and final soil weights. Repeated measures analysis of variance revealed a strong overall soil effect on basal respiration and microbial biomass and a strong overall glucose effect on microbial biomass and qCO2, whereas the analysis of within-subjects effects revealed strong interactions of the time factor with both soil and glucose on all three measurements. In the poor soil, glucose supported high microbial biomass and therefore low qCO2, until the end of the incubation, whereas in the rich soil, glucose also supported high microbial biomass and low qCO2, but these converged towards control (i.e. no glucose) values before the end of the incubation. Mineral-N pools were high in the rich control treatment only, whereas the NDI was high only in the rich + glucose treatment. Anaerobic N mineralization rates did not differ statistically among treatments. Glucose significantly decreased mass loss in the rich soil but not in the poor soil. The data support the conclusion that glucose addition to the rich soil inhibits microbial utilization of nutrient-containing soil OM for maintenance energy thus exacerbating nutritional deficiencies, whereas glucose addition to the poor soil does not affect soil N cycling. Based on results of analytical pyrolysis performed on soil subsamples prior to the incubation, we hypothesize that higher amounts of tannins measured in the poor humus may have chemically immobilized and ultimately controlled availability of N. },
    KEYWORDS = { basal respiration glucose humus metabolic quotient microbial biomass nitrogen soil nutrient },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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