NamroudLeducTremblayEtAl2006

Reference

Namroud, M.C., Leduc, A., Tremblay, M.F., Bergeron, Y. (2006) Simulations of clonal species genotypic diversity - Trembling aspen (Populus tremuloides) as a case study. Conservation Genetics, 7(3):415-426.

Abstract

We built two models to follow clonal species genotypic diversity (G/N) over long periods of time at the stand and landscape levels. The models were then validated with empirical data from trembling aspen (Populus tremuloides) populations in Quebec's boreal forest. Data was collected using a chronosequence approach in seven sites that burned in 1717, 1760, 1797, 1823, 1847, 1944, and 1916. Genetic identification was done by using four microsatellite loci. At the stand scale, simulations were repeated for a genet size of 5, 25, 50 and 100 ramets each. At the landscape level, we simulated the cumulative genet survival rate under different fire cycles (5-500 years) for 500 years after fire. Stand simulations indicated that ramet mortality within genets rather than genet mortality accounts for the increase in G/N with time since fire. Both the initial genet size and the recurrent suckering of some genets (or ramet recruitment) play an important role in maintaining high G/N levels for long periods of time. In general, the larger the number of ramets per genet, the longer the genet survives under a gap disturbance regime and a minimum of 100 ramets per genet is required to maintain aspen genet survival for 500 years. At the landscape level, genet loss increases as the fire cycle gets longer. In Quebec's boreal forest, short rotation even-aged management practices seem to maintain a genet survival rate similar to that produced by the natural succession regime. © Springer 2006.

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@ARTICLE { NamroudLeducTremblayEtAl2006,
    AUTHOR = { Namroud, M.C. and Leduc, A. and Tremblay, M.F. and Bergeron, Y. },
    TITLE = { Simulations of clonal species genotypic diversity - Trembling aspen (Populus tremuloides) as a case study },
    JOURNAL = { Conservation Genetics },
    YEAR = { 2006 },
    VOLUME = { 7 },
    PAGES = { 415-426 },
    NUMBER = { 3 },
    NOTE = { 15660621 (ISSN) Export Date: 25 April 2007 Source: Scopus CODEN: CGOEA doi: 10.1007/s10592-005-9051-3 Language of Original Document: English Correspondence Address: Namroud, M.-C.; Chaire AFD; Universite? du Que?bec en Abitibi-Te?miscamingue; 445 boul. de, l'Universite? Rouyn-Noranda, Que. J9X 5E4, Canada; email: Marie-Claire.Namroud@uqat.ca References: Balloux, F., Lehmann, L., De Meeu?s, T., The population genetics of clonal and partially clonal diploids (2003) Genetics, 164, pp. 1635-1644; Belkhir, K., Borsa, P., Chikhi, L., Raufaste, N., Bonhomme, F., (2004) GENETIX V4.05, Logiciel Sous Windows TM Pour la Ge?ne?tique des Populations, , Laboratoire Ge?nome, Populations, Interactions CNRS UMR 5000, Universite? de Montpellier II, Montpellier; Bengtsson, B.O., Genetic variation in organisms with sexual and asexual reproduction (2003) J. Evol. Biol., 16, pp. 189-199; Bergeron, Y., The influence of island and mainland landscapes on boreal forest fire regimes (1991) Ecology, 72, pp. 1980-1992; Bergeron, Y., Species and stand dynamics in the mixed woods of Quebec's southern boreal forest (2000) Ecology, 81, pp. 1500-1516; Bergeron, Y., Dubuc, M., Succession in the southern part of the Canadian boreal forest (1989) Vegetatio, 79, pp. 39-51; Bergeron, Y., Richard, P.J.H., Carcaillet, C., Gauthier, S., Flannigan, M., Prairie, Y.T., Variability in fire frequency and forest composition in Canada's southeastern boreal forest: A challenge for sustainable forest management (1998) Cons. Ecol. [Online], 2 (2). , http://www.cons-ecol.org/vol2/iss2/art6/; Bergeron, Y., Harvey, B., Leduc, A., Gauthier, S., Forest management guidelines based on natural disturbance dynamics: Stand- and forest-level considerations (1999) For. Chron., 75, pp. 49-54; Cheliak, W.M., Dancik, B.P., Genic diversity of natural populations of a clone forming tree Populus tremuloi?des (1982) Can. J. Genet. Cytol., 24, pp. 611-616; Chung, M.G., Epperson, B.K., Clonal and spatial genetic structure in Eurya emarginata (Theaceae) (2000) Heredity, 84, pp. 170-177; Cronberg, N., Colonization dynamics of the clonal moss Hylocomium splendens on islands in a Baltic land uplift area: Reproduction, genet distribution and genetic variation (2002) J. Ecol., 90, pp. 925-935; Dansereau, P.R., Bergeron, Y., Fire history in the southern boreal forest of Quebec (1993) Can. J. For. Res., 23, pp. 25-32; DesRochers, A., Lieffers, V.J., The coarse-root system of mature aspen (Populus tremuloides) in declining stands in Alberta, Canada (2001) J. Veg. Sci., 12, pp. 355-360; Donough, T., Changes to Ontario's Forest Tree Seedling Production: 1992 to 1997 (1997) 1997 National Proceedings, Forest and Conservation Nursery Associations, pp. 8-11. , tech. cords. 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    ABSTRACT = { We built two models to follow clonal species genotypic diversity (G/N) over long periods of time at the stand and landscape levels. The models were then validated with empirical data from trembling aspen (Populus tremuloides) populations in Quebec's boreal forest. Data was collected using a chronosequence approach in seven sites that burned in 1717, 1760, 1797, 1823, 1847, 1944, and 1916. Genetic identification was done by using four microsatellite loci. At the stand scale, simulations were repeated for a genet size of 5, 25, 50 and 100 ramets each. At the landscape level, we simulated the cumulative genet survival rate under different fire cycles (5-500 years) for 500 years after fire. Stand simulations indicated that ramet mortality within genets rather than genet mortality accounts for the increase in G/N with time since fire. Both the initial genet size and the recurrent suckering of some genets (or ramet recruitment) play an important role in maintaining high G/N levels for long periods of time. In general, the larger the number of ramets per genet, the longer the genet survives under a gap disturbance regime and a minimum of 100 ramets per genet is required to maintain aspen genet survival for 500 years. At the landscape level, genet loss increases as the fire cycle gets longer. In Quebec's boreal forest, short rotation even-aged management practices seem to maintain a genet survival rate similar to that produced by the natural succession regime. © Springer 2006. },
    KEYWORDS = { Aspen Clonal diversity Even-aged management Fire cycle Time since fire },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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