DesRochersLieffers2001a

Référence

DesRochers, A. and Lieffers, V.J. (2001) The coarse-root system of mature Populus tremuloides in declining stands in Alberta, Canada. Journal of Vegetation Science, 12(3):355-360.

Résumé

The coarse-root dynamics of tamers of Populus tremuloides (aspen) were investigated with respect to persistence of the original root connections (roots of parent trees from which the ramets originated), the time of establishment of new roots at the base of the stem and the fate of the communal root system after death of individual trees. Parts of the root systems of three declining stands of aspen ramets were hydraulically excavated. From each stand, sections of all structural roots were collected at the base of live and dead trees and were analysed using dendrochronology techniques. Parent roots were identified in the root system of every tree. The trees initiated new structural toots shortly after suckering. Live roots were often connected to the stump of dead and decayed trees. Grafting was common, especially at or near the stumps. Death of trees along the parent roots over time did not seem to favour the entry of significant decay, nor promote breakage of the original root connections. Instead of becoming independent of the parent root system the ramets incorporated the parent roots into their own root systems, remaining interconnected.

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@ARTICLE { DesRochersLieffers2001a,
    AUTHOR = { DesRochers, A. and Lieffers, V.J. },
    TITLE = { The coarse-root system of mature Populus tremuloides in declining stands in Alberta, Canada },
    JOURNAL = { Journal of Vegetation Science },
    YEAR = { 2001 },
    VOLUME = { 12 },
    PAGES = { 355-360 },
    NUMBER = { 3 },
    NOTE = { 11009233 (ISSN) Cited By (since 1996): 9 Export Date: 27 April 2007 Source: Scopus CODEN: JVESE Language of Original Document: English Correspondence Address: DesRochers, A.; Alberta-Pacific For. Ind. Inc.; Box 8000 Boyle, Alta. TOA OMO, Canada; email: desrocan@alpac.ca References: Barnes, B.V., The clonal growth habit of American aspens (1966) Ecology, 47, pp. 439-447; Basnet, K., Scatena, F.N., Likens, G.E., Lugo, A.E., Ecological consequences of root grafting in Tabonuco (Dacryodes excelsa) trees in the Luquillo experimental forest, Puerto Rico (1993) Biotropica, 25, pp. 28-35; Bormann, F.H., Graham F., Jr., (1959) The occurrence of natural root grafting in eastern white pine, Pinus strobus L., and its ecological implications, , Ph.D. Thesis, Bot. Dep., Duke University, Durham, NC; Bowser, W.E., Kjearsgaard, A.A., Peters, T.W., Wells, R.E., Soil survey of Edmonton (83-H) (1962) Alberta Soil Survey Report no. 21, University of Alberta (Bull. SS-4); Brown, A.B., Cambial activity, root habit and sucker shoot development in two species of poplar (1935) New Phytol., 34, pp. 163-179; Brown, J.K., DeByle, N.V., Effects of prescribed fire on biomass and plant succession in western aspen (1989) USDA Forest Service, Research Paper INT-412, , Intermountain Research Centre, Ogden, UT; Cook, D.B., Welch, D.S., Backflash damage to residual stands incident to chemi-peeling (1957) J. For., 55, pp. 265-267; DeByle, N.V., Detection of functional intraclonal root connections by tracers and excavation (1964) For. Sci., 10, pp. 386-396; DesRochers, A., Lieffers, V.J., Root biomass of regenerating aspen (Populus tremuloides) stands of different densities in Alberta (2001) Can. J. For. Res., 31, pp. 1012-1018; Eis, S., Root grafts and their silvicultural implications (1972) Can. J. For. Res., 2, pp. 111-120; Epstein, A.H., Root graft transmission of tree pathogens (1978) Annu. Rev. Phytopathol., 16, pp. 181-192; Farmer, R.E., Aspen root sucker formation and apical dominance (1962) For. Sci., 8, pp. 403-410; Fayle, D.C.F., Radial growth in tree roots; distribution, timing, anatomy (1968) Faculty of Forestry, University of Toronto, Tech. Rep. 9; Gifford, G.F., Aspen root studies on three sites in northern Utah (1966) Am. Midl. Nat., 75, pp. 132-141; Graham B.F., Jr., Bormann, F.H., Natural root grafts (1966) Bot. Rev., 32, pp. 255-292; Holmes, R.L., Computer-assisted quality control in tree-ring dating and measurement (1983) Tree-Ring Bull., 43, pp. 69-78; Kemperman, J.A., Barnes, B.V., Clone size in American aspen (1976) Can. J. Bot., 54, pp. 2603-2607; Knapik, L.J., Pettapiece, W.W., Peters, T.W., Reconnaissance soil survey of the Brazeau Dam area (1981) Pedology Consultants, Land Resource Research Institute, Research Branch Agriculture Canada, Alberta Soil Survey Report no. 40, , Edmonton, Alberta; Kocaoglu, S.S., Brunelle, A., Soil survey of the Sand River area (73L) (1975) Alberta Institute of Pedology Bull SS-15, Alberta Soil Survey Report no. 34; Kozlowski, T.T., Cooley, J.H., Natural root grafting in Northern Wisconsin (1961) J. For., 59, pp. 105-107; Krause, C., Eckstein, D., Dendrochronology of roots (1993) Dendrochronologia, 11, pp. 9-23; LaRue, C.D., Root grafting in trees (1934) Am. J. Bot., 21, pp. 121-126; Lavertu, D., Mauffette, Y., Bergeron, Y., Effects of stand age and litter removal on the regeneration of Populus tremuloides (1994) J. Veg. Sci., 5, pp. 561-568; Maini, J.S., (1960) Invasion of grassland by Populus tremuloides in the northern Great Plains, , Ph.D. Thesis, University of Saskatchewan, Saskatoon; Maini, J.S., On the organization and growth of aspen roots. II. Rapidly-tapering and cord-like roots (1965) Department of Forestry Canada, Forest Research Branch, Preliminary report project 0-24; Moss, E.H., (1983) Flora of Alberta. 2nd ed., , University of Toronto Press, Toronto; Sandberg, D., (1951) The regeneration of quaking aspen by root suckering, , M. Sc. Thesis, School of Forestry, University of Minnesota, MN; Schier, G.A., Deterioration of aspen clones in the middle Rocky, Mountains (1975) USDA Forest Service, Res. Pap. INT-170, , Int. For. Range Exp. Sta., Ogden, Utah; Schier, G.A., Sucker regeneration in some deteriorating Utah aspen stands: Development of independent root systems (1982) Can. J. For. Res., 12, pp. 1032-1035; Schier, G.A., Campbell, R.B., Aspen sucker regeneration following burning and clearcutting on two sites in the Rocky Mountains (1978) For Sci., 24, pp. 303-308; Schweingruber, F.H., (1989) Tree rings: Basics and applications of dendrochronology, , Kluwer Academic Publishers, Dordrecht; Shepperd, W.D., Initial growth, development, and clonal dynamics of regenerated aspen in the Rocky Mountains (1993) USDA Forest Service, Res Pap RM-312, , Rocky Mtn For. Range Exp. Sta., Fort Collins, CO; Shepperd, W.D., Smith, F.W., The role of near-surface lateral roots in the life cycle of aspen in the central Rocky Mountains (1993) For. Ecol. Manage., 61, pp. 157-170; Stone, E.L., The communal root system of red pine: Growth of girdled trees (1974) For. Sci., 20, pp. 294-305; Strong, W.L., La Roi, G.H., Root-system morphology of common boreal forest trees in Alberta, Canada (1983) Can. J. For. Res., 13, pp. 1164-1173; Strong, W.L., Leggat, K.R., (1992) Ecoregions of Alberta, , Alberta Forestry, Lands and Wildlife, Edmonton, Alberta; Swetnam, T.W., Thompson, M.A., Kennedy Sutherland, E., Using dendrochronology to measure radial growth of defoliated trees (1985) USDA Forest Service, Agriculture Handbook, 639, pp. 1-39; Tew, R.K., Debyle, N.V., Schultz, J.D., Intraclonal root connections among quaking aspen trees (1969) Ecology, 50, pp. 920-921. },
    ABSTRACT = { The coarse-root dynamics of tamers of Populus tremuloides (aspen) were investigated with respect to persistence of the original root connections (roots of parent trees from which the ramets originated), the time of establishment of new roots at the base of the stem and the fate of the communal root system after death of individual trees. Parts of the root systems of three declining stands of aspen ramets were hydraulically excavated. From each stand, sections of all structural roots were collected at the base of live and dead trees and were analysed using dendrochronology techniques. Parent roots were identified in the root system of every tree. The trees initiated new structural toots shortly after suckering. Live roots were often connected to the stump of dead and decayed trees. Grafting was common, especially at or near the stumps. Death of trees along the parent roots over time did not seem to favour the entry of significant decay, nor promote breakage of the original root connections. Instead of becoming independent of the parent root system the ramets incorporated the parent roots into their own root systems, remaining interconnected. },
    KEYWORDS = { Aspen Clone Cross-dating Root age structure Root connection Root excavation Root graft Tree root forest ecosystem root colonization root system Canada Populus tremuloides },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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