DesplandHoule1997a

Reference

Despland, E. and Houle, G. (1997) Aspect influences cone abundance within the crown of Pinus banksiana Lamb. trees at the limit of the species distribution in northern Quebec (Canada). Ecoscience, 4(4):521-525.

Abstract

We studied the variability in cone and seed production and vegetative growth within the crown of jack pine trees (Pinus banksiana Lamb.) in a population at the limit of the species distribution in northern Que?bec. Number of cones, number of fertile scales per cone, proportion of formed seeds per cone, and branch elongation were compared among heights and aspects for 15 trees, over a 4-year period. Cone number was generally greater in the south quadrant and in the upper part of the tree crown. Number of fertile scales per cone, proportion of formed seeds per cone, and branch elongation were also higher in the upper part of the tree crown, but did not vary much with aspect. Increased cone production in the south quadrant of the tree crown was thus not strictly related to higher branch growth and vigor, but appeared to result from direct and/or indirect effects of higher intercepted radiation on this part of the tree crown.

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@ARTICLE { DesplandHoule1997a,
    AUTHOR = { Despland, E. and Houle, G. },
    TITLE = { Aspect influences cone abundance within the crown of Pinus banksiana Lamb. trees at the limit of the species distribution in northern Quebec (Canada) },
    JOURNAL = { Ecoscience },
    YEAR = { 1997 },
    VOLUME = { 4 },
    PAGES = { 521-525 },
    NUMBER = { 4 },
    NOTE = { 11956860 (ISSN) Cited By (since 1996): 4 Export Date: 27 April 2007 Source: Scopus Language of Original Document: English Correspondence Address: Despland, E.; Jesus College Oxford, OX1 3DW, United Kingdom References: (1982) Canadian Climate Normals: Frost, 1951-1980, , Atmospheric Environment Service, Environment Canada, Downsview, Ontario; Berman, F., (1976) Characteristics of Cone and Seed from Different Parts of the Crown in Scots Pine, Pinus Sylvestris L. in Northern Sweden, , Department of Reforestation, Research Note 68, Royal College of Forestry, Stockholm; Despland, E., (1995) Reproduction et Croissance du Pin Gris a? la Limite Nord de sa Re?partition: Influences Climatiques et Conflits d'Allocation, , M. Sc. Thesis, Faculte? des sciences et de ge?nie, Universite? Laval, Sainte-Foy, Que?bec; Despland, E., Houle, G., Climate influences on growth and reproduction of Pinus banksiana (Pinaceae) at the limit of the species distribution in eastern North America (1997) American Journal of Botany, 84, pp. 928-937; Desponts, M., Payette, S., Recent dynamics of jack pine at its northern distribution limit in northern Que?bec (1992) Canadian Journal of Botany, 70, pp. 1157-1167; Duchesne, S., Sirois, L., Phase initiale de re?ge?ne?ration apre?s feu des populations conife?riennes subarctiques (1995) Canadian Journal of Forest Research, 25, pp. 307-318; Garman, E.H., (1951) Seed Production by Conifers in the Coastal Region of British Columbia Related to Dissemination and Regeneration, , Forest Service Technical Publication T35, Department of Lands and Forests, Victoria, British Columbia; Houle, G., Filion, L., Interannual variations in the seed production of Pinus banksiana at the limit of the species distribution in northern Que?bec, Canada (1993) American Journal of Botany, 80, pp. 1242-1250; Kluczynski, B., Yield and quality of Norway spruce (Picea abies) seed according to position in the crown and selected biological and site-related characteristics of the tree (1992) Sylwan, 136, pp. 25-36; Lee, K.J., (1979) Factors Affecting Cone Initiation in Pines: A Review, , Institute of Forest Genetics Research Report 15. Suwan, Korea; Matthews, J.D., Factors affecting the production of seed by forest trees (1963) Forestry Abstracts, 24, pp. i-xiii; Moore, M.I., Nozzolillo, C., (1991) Illustrated Guide to Stages of Jack Pine Cone Development, , COFRDA Report 3313. Forestry Canada, Ontario Region, Sault-Ste-Marie, Ontario; Montgomery, D.C., (1984) Design and Analysis of Experiments, , 2nd ed., John Wiley and Sons, New York; Owens, J.N., Flowering and seed set (1991) Physiology of Trees, pp. 247-273. , A. S. Raghavendra (ed.). John Wiley and Sons, New York; Owens, J.N., Simpson, S.J., Molder, M., Sexual reproduction of Films contorta. I. Pollen development, the pollination mechanism, and early ovule development (1981) Canadian Journal of Botany, 59, pp. 1828-1843; Rice, W.R., Analyzing tables of statistical tests (1989) Evolution, 43, pp. 223-225; Rudolph, T.D., Laidly, P.R., Jack pine (1990) Silvics of North America, Vol. 1, Conifers, 1, pp. 280-293. , R. M. Burns \& B. H. Honkala (ed.). USDA Forest Service, Agriculture Handbook 654, Washington, D.C; Simpson, J.D., Powell, G.R., Some factors influencing cone production on young black spruce in New Brunswick (1981) Forestry Chronicle, 57, pp. 267-269; Smith, W.H., Stanley, R.G., Cone distribution in crowns of slash pine (Pinus elliottii Engelm.) in relation to stem, crown and wood increment (1969) Silvae Genetica, 18, pp. 86-91; Wilson, C.V., (1971) Le Climat du Que?bec, , Atlas climatique, premie?re partie. Service me?te?orologique canadien, Ottawa, Ontario; Winjum, J.K., Johnson, N.E., Differences in cone numbers, lengths, and cut-counts in the crowns of young open-grown Douglas fir (1964) Journal of Forestry, 62, pp. 389-391; Young, J.A., Young, C.G., (1992) Seeds of Woody Plants in North America (Revised and Enlarged Edition), , Dioscorides Press, Portland, Oregon. },
    ABSTRACT = { We studied the variability in cone and seed production and vegetative growth within the crown of jack pine trees (Pinus banksiana Lamb.) in a population at the limit of the species distribution in northern Que?bec. Number of cones, number of fertile scales per cone, proportion of formed seeds per cone, and branch elongation were compared among heights and aspects for 15 trees, over a 4-year period. Cone number was generally greater in the south quadrant and in the upper part of the tree crown. Number of fertile scales per cone, proportion of formed seeds per cone, and branch elongation were also higher in the upper part of the tree crown, but did not vary much with aspect. Increased cone production in the south quadrant of the tree crown was thus not strictly related to higher branch growth and vigor, but appeared to result from direct and/or indirect effects of higher intercepted radiation on this part of the tree crown. },
    KEYWORDS = { Aspect Growth Jack pine Northern Que?bec Pinus banksiana Reproduction },
    OWNER = { racinep },
    TIMESTAMP = { 2007.09.07 },
}

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