LapointeBradleyShipley2005

Référence

Lapointe, B., Bradley, R.L., Shipley, B. (2005) Mineral nitrogen and microbial dynamics in the forest floor of clearcut or partially harvested successional boreal forest stands. Plant and Soil, 271(1-2):27-37.

Résumé

The effects of clearcut and partial harvesting of early-seral trembling aspen plots were compared to conventional clearcut harvesting in mid-seral mixedwood and late-seral conifer plots. Twice a year, for three consecutive years, we assessed mineral N and microbial dynamics in the forest floor of these plots to test three hypotheses related to the higher litter quality of aspen leaves and to the sustained inputs of available C on partially harvested plots: (1) the post-clearcutting mineral N flush and the net [(NO 3- ): (NO 3- + NH 4+ )] production ratio (RNI) are higher in aspen plots than in black spruce plots, with intermediate values occurring in mixedwood plots; (2) net N mineralization rates in aspen plots are higher in spring than in autumn; and (3) compared to clearcutting, partial harvesting reduces potential ammonification and nitrification rates. Initial NH 4+ and NO 3- concentrations respectively ranged between 1.7-4.4 and 0.2-1.5 g N kg-1 Ntotal, net ammonification and nitrification rates (30 d incubations) respectively ranged between 5.3-17.8 and 0.1-27.6 g N kg -1 Ntotal, basal respiration ranged between 20.9-38.9 mg CO2-C kg-1 h-1, and microbial biomass ranged between 6.1-8.7 g Cmic kg-1. Although clearcutting increased NO 3- concentrations in aspen plots, the balance of our results did not support our first hypothesis, because NH 4+ concentrations increased in conifer plots only, potential ammonification was unaffected by clearcutting, potential nitrification increased in mixedwood plots only, and RNI increased in all plots. In each seral stage, basal respiration, microbial biomass, and metabolic quotient either increased or were unaffected by clearcutting, suggesting that increases in RNI after disturbance were not related to lower microbial immobilisation of NO 3- due to lower available C. Forest floors in mid-seral mixedwood plots exhibited a distinct combination of mineral N and microbial properties, suggesting that the functional richness of the forest is enhanced not only by the number of species, but also by the diversity of assemblages that are present. Results supported our second hypothesis and showed, furthermore, that net N mineralization in conifer stands is greater in autumn than in spring. Partial harvesting in aspen stands resulted in lower potential mineralization of N and lower RNI, compared to clearcutting. Further lysimetry studies are needed to confirm whether partial harvesting mitigates NO 3- leaching following disturbance. © Springer 2005.

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@ARTICLE { LapointeBradleyShipley2005,
    AUTHOR = { Lapointe, B. and Bradley, R.L. and Shipley, B. },
    TITLE = { Mineral nitrogen and microbial dynamics in the forest floor of clearcut or partially harvested successional boreal forest stands },
    JOURNAL = { Plant and Soil },
    YEAR = { 2005 },
    VOLUME = { 271 },
    PAGES = { 27-37 },
    NUMBER = { 1-2 },
    NOTE = { 0032079X (ISSN) Cited By (since 1996): 4 Export Date: 26 April 2007 Source: Scopus CODEN: PLSOA doi: 10.1007/s11104-004-1830-y Language of Original Document: English Correspondence Address: Bradley, R.L.; Universite? de Sherbrooke; De?partement de Biologie Sherbrooke, Que. J1k 2R1, Canada; email: robert.bradley@usherbrooke.ca References: Anderson, J.P.E., Domsch, K.H., A physiological method for the quantitative measurement of microbial biomass in soils (1978) Soil Biol. Biochem, 10, pp. 215-221; Bergeron, Y., Camire?, C., Bouchard, A., Gangloff, P., Analyse et classification des sols pour une e?tude e?cologique inte?gre?e d'un secteur de l'Abitibi, Que?bec (1982) Ge?ogr. Phys. Quat, 36, pp. 291-305; Bergeron, Y., Dubuc, M., Succession in the southern part of the Canadian boreal forest (1989) Vegetatio, 79, pp. 51-63; Bergeron, Y., Harvey, B., Basing silviculture on natural ecosystem dynamics: An approach applied to the southern boreal mixedwood forest of Quebec (1997) For. Ecol. Manage, 92, pp. 235-242; Bradley, R.L., An alternative explanation for the post-disturbance NO3- flush in some forest ecosystems (2001) Ecol. Lett, 4, pp. 412-416; Bradley, R.L., Fyles, J.W., A kinetic parameter describing soil available carbon and its relationship to rate increase in C mineralisation (1995) Soil Biol. Biochem, 27, pp. 167-172; Bradley, R.L., Kimmins, J.P., Martin, W.L., Post-clearcutting chronosequence in B.C. Coastal Western Hemlock zone II Tracking the assart flush (2002) J. Sustain. for, 14, pp. 23-43; Bradley, R.L., Titus, B.D., Kimmins, J.P., Hogg, K., Prescott, C.E., Assessing the controls on soil mineral-N cycling rates in managed Coastal Western Hemlock ecosystems of British Columbia (2000) J. Sust. for, 10, pp. 213-219; Brais, S., Camire?, C., Bergeron, Y., Pare?, D., Changes in nutrient availability and forest floor characteristics in relation to stand age and forest composition in the southern part of the boreal forest of northwestern Quebec (1995) For. Ecol. Manage, 76, pp. 181-189; Chang, S.X., Trofymow, J.A., Microbial respiration and biomass (substrate-induced respiration) in soils of old-growth and regenerating forests on northern Vancouver Island, British Columbia (1996) Biol. Fertil. Soils, 23, pp. 145-152; Diaz, S., Cabido, M., Vive la difference: Plant functional diversity matters to ecosystem processes (2001) Trends Ecol. Evol, 16, pp. 646-655; Enright, N.J., Nutrient accessions in a mixed conifer-angiosperm forest in northern New Zealand (2001) Austral. Ecol, 26, pp. 618-629; (2003) Archives Nationales d'Information et de Donne?es Climatologiques. Normales et Moyennes Climatiques, , http:www.climat.meteo.ec.gc.ca/Welcome_f.html; Ferrari, J.B., Fine-scale patterns of leaf litterfall and nitrogen cycling in an old-growth forest (1999) Can. J. For. Res, 29, pp. 291-302; Frazer, D.W., McColl, J.G., Powers, R.F., Soil nitrogen mineralization in a clearcutting chronosequence in a northern California forest (1990) Soil Sci. Soc. Am. J, 54, pp. 1145-1152; Grenon, F., Bradley, R.L., Joanisse, G., Titus, B.D., Prescott, C.E., Mineral N availability for conifer growth following clearcutting: Responsive versus non-responsive ecosystems (2004) For. Ecol. Manage, 188, pp. 305-316; Gross, K.L., Pregitzer, K.S., Burton, A.J., Spatial variation in nitrogen availability in three successional plant communities (1995) J Ecol, 83, pp. 357-367; Hart, S.C., Nitrogen transformations in fallen tree boles and mineral soil of an old-growth forest (1999) Ecology, 80, pp. 1385-1394; Hart, S.C., Nason, G.E., Myrold, D.D., Perry, D.A., Dynamics of gross nitrogen transformations in an old-growth forest - The carbon connection (1994) Ecology, 75, pp. 880-891; Hedin, L.O., Armesto, J.J., Johnson, A.H., Patterns of nutrient loss from unpolluted, old-growth temperate forests - Evaluation of biogeochemical theory (1995) Ecology, 76, pp. 493-509; Huang, W.Z., Schoenau, J.J., Seasonal and spatial variations in soil nitrogen and phosphorus supply rates in a boreal aspen forest (1997) Can. J. Soil Sci, 77, pp. 597-612; Kimmins, J.P., (1997) Forest Ecology - A Foundation for Sustainable Management 2, , Prentice Hall, Upper Saddle River New Jersey; Klingensmith, K.M., Van Cleve, K., Patterns of nitrogen mineralization and nitrification in floodplain successional soils along the Tanana River, interior Alaska (1993) Can. J. For. Res, 23, pp. 964-969; Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M., Conifer root discrimination against soil nitrate and the ecology of forest succession (1997) Nature, 385, pp. 59-61; Likens, G.E., Bormann, F.H., Johnson, N.M., Fisher, D.W., Pierce, R.S., Effects of forest cutting and herbicides treatment on nutrient budgets in the Hubbard Brook Watershed-Ecosystem (1970) Ecol. Monogr, 40, pp. 23-47; Lytle, D.E., Cronan, C.S., Comparative soil CO2 evolution, litter decay, and root dynamics in clearcut and uncut spruce-fir forest (1998) For. Ecol. Manage, 103, pp. 121-128; Man, R., Lieffers, V.J., Are mixtures of aspen and white spruce more productive than single species stands? (1999) For. Chron, 75, pp. 505-513; Middleton, E.M., Sullivan, J.H., Bovard, B.D., Deluca, A.J., Chan, S.S., Cannon, T.A., Seasonal variability in foliar characteristics and physiology for boreal forest species at the five Saskatchewan tower sites during the 1994 Boreal Ecosystem-Atmosphere Study (1997) J. Geophys. Res. Atm, 102, pp. 28831-28844; Nguyen-Xuan, T., Bergeron, Y., Simard, D., Fyles, J.W., Pare, D., The importance of forest floor disturbance in the early regeneration patterns of the boreal forest of western and central Quebec: A wildfire versus logging comparison (2000) Can. J. For. Res, 30, pp. 1353-1364; (2003) Manuel d'Ame?nagement Forestier, 4e E?dition, , Gouvernement du Que?bec; Northup, R.R., Yu, Z.S., Dahlgren, R.A., Vogt, K.A., Polyphenol control of nitrogen release from pine litter (1995) Nature, 377, pp. 227-229; O?hlund, J., Na?sholm, T., Growth of conifer seedlings on organic and inorganic nitrogen sources (2001) Tree Physiol, 21, pp. 1319-1326; Paavolainen, L., Kitunen, V., Smolander, A., Inhibition of nitrification in forest soil by monoterpenes (1998) Plant Soil, 205, pp. 147-154; Pare?, D., Van Cleve, K., Soil nutrient availability and relationships with aboveground biomass production on postharvested upland white spruce sites in Interior Alaska (1993) Can. J. For. Res, 23, pp. 1223-1232; Pare?, D., Bergeron, Y., Longpre?, M.-H., Potential productivity of aspen cohorts originating from fire, havesting, and tree fall gaps on two deposit types in northwestern Quebec (2001) Can. J. For. Res, 31, pp. 1067-1073; Pietika?inen, J., Vaija?rvi, E., Ilvesniemi, H., Fritze, H., Westman, C.J., Carbon storage of microbes and roots and the flux of CO2 across a moisture gradient (1999) Can. J. For. Res, 29, pp. 1197-1203; Prescott, C.E., Effects of clearcutting and alternative silvicultural systems on rates of decomposition and nitrogen mineralization in a coastal montane coniferous forest (1997) For. Ecol. Manage, 95, pp. 253-260; Quian, H., Klinka, K., Spatial variability of humus forms in some coastal forest ecosystems of British Columbia (1995) Ann. Sci. for, 52, pp. 653-666; Robertson, G.P., Nitrification in forested ecosystems (1982) Phil. Trans. R. Soc. Lond, 296, pp. 445-457; Satti, P., Mazzarino, M.J., Gobbi, M., Funes, F., Roselli, L., Fernandez, H., Soil N dynamics in relation to leaf litter quality and soil fertility in north-western Patagonia forests (2003) J. Ecol, 91, pp. 173-181; Schimel, J.P., Van Cleve, K., Cates, R.G., Clausen, T.P., Reichardt, P.B., Effects of balsam poplar (Populus balsamifera) tannins and low molecular weight phenolics on microbial activity in taiga floodplain soil: Implication for changes in N cycling during succession (1996) Can. J. Bot, 74, pp. 84-90; Smethurst, P.J., Nambiar, E.K.S., Distribution of carbon and nutrients and fluxes of mineral nitrogen after clear-felling a Pinus radiata plantation (1990) Can. J. For. Res, 20, pp. 1490-1497; (1998) The Canadian System of Soil Classification (3rd Ed.), , Agriculture and Agri-food Canada, Publication 1646, Ottawa; Stark, J.M., Hart, S.C., High rates of nitrification and nitrate turnover in undisturbed coniferous forests (1997) Nature, 385, pp. 61-64; Ste-Marie, C., Pare, D., Soil, pH and N availability effects on net nitrification in the forest floors of a range of boreal forest stands (1999) Soil Biol. Biochem, 31, pp. 1579-1589; Van Cleve, K., Yarie, J., Erickson, R., Dyrness, C.T., Nitrogen mineralization and nitrification in successional ecosystems on the Tanana River floodplain, interior Alaska (1993) Can. J. For. Res, 23, pp. 970-978; Vanhala, P., Seasonal variation in the soil respiration rate in coniferous forest soils (2002) Soil Biol. Biochem, 34, pp. 1375-1379; Vincent, J.-S., Hardy, L., L'e?volution et l'extinction des lacs glaciaires Barlow et Ojibway en territoire que?be?cois (1977) Ge?ogr. Phys. Quat, 31, pp. 357-372; Vitousek, P.M., Matson, P.A., Van Cleve, K., Nitrogen availability and nitrification during succession: Primary, secondary, and old-field seres (1989) Plant Soil, 115, pp. 229-239; Wardle, D.A., Ghani, A., A critique of the microbial metabolic uotient (qCO2) as a bioindicator of disturbance and ecosystem development (1995) Soil Biol. Biochem, 27, pp. 1601-1610; West, D.C., Botkin, D.B., Shugart, H.H., (1981) Forest Succession: Concepts and Applications, p. 503. , Springer-Verlag New York; Yarie, J., Boreal forest ecosystem dynamics. II. Application of the model to four vegetation types in interior Alaska (2000) Can. J. For. Res, 30, pp. 1010-1023. },
    ABSTRACT = { The effects of clearcut and partial harvesting of early-seral trembling aspen plots were compared to conventional clearcut harvesting in mid-seral mixedwood and late-seral conifer plots. Twice a year, for three consecutive years, we assessed mineral N and microbial dynamics in the forest floor of these plots to test three hypotheses related to the higher litter quality of aspen leaves and to the sustained inputs of available C on partially harvested plots: (1) the post-clearcutting mineral N flush and the net [(NO 3- ): (NO 3- + NH 4+ )] production ratio (RNI) are higher in aspen plots than in black spruce plots, with intermediate values occurring in mixedwood plots; (2) net N mineralization rates in aspen plots are higher in spring than in autumn; and (3) compared to clearcutting, partial harvesting reduces potential ammonification and nitrification rates. Initial NH 4+ and NO 3- concentrations respectively ranged between 1.7-4.4 and 0.2-1.5 g N kg-1 Ntotal, net ammonification and nitrification rates (30 d incubations) respectively ranged between 5.3-17.8 and 0.1-27.6 g N kg -1 Ntotal, basal respiration ranged between 20.9-38.9 mg CO2-C kg-1 h-1, and microbial biomass ranged between 6.1-8.7 g Cmic kg-1. Although clearcutting increased NO 3- concentrations in aspen plots, the balance of our results did not support our first hypothesis, because NH 4+ concentrations increased in conifer plots only, potential ammonification was unaffected by clearcutting, potential nitrification increased in mixedwood plots only, and RNI increased in all plots. In each seral stage, basal respiration, microbial biomass, and metabolic quotient either increased or were unaffected by clearcutting, suggesting that increases in RNI after disturbance were not related to lower microbial immobilisation of NO 3- due to lower available C. Forest floors in mid-seral mixedwood plots exhibited a distinct combination of mineral N and microbial properties, suggesting that the functional richness of the forest is enhanced not only by the number of species, but also by the diversity of assemblages that are present. Results supported our second hypothesis and showed, furthermore, that net N mineralization in conifer stands is greater in autumn than in spring. Partial harvesting in aspen stands resulted in lower potential mineralization of N and lower RNI, compared to clearcutting. Further lysimetry studies are needed to confirm whether partial harvesting mitigates NO 3- leaching following disturbance. © Springer 2005. },
    KEYWORDS = { Forest floor Forest succession Microbial respiration Nitrification Nitrogen mineralization Partial harvesting boreal forest forest floor microbial activity mineralization nitrification nitrogen nutrient dynamics succession timber harvesting Coniferophyta Picea mariana },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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