BergeronGagnon1987
Référence
Bergeron, Y., Gagnon, D. (1987) Age structure of red pine ( Pinus resinosa Ait.) at its northernlimit in Quebec. Canadian Journal of Forest Research, 17(2):129-137.
Résumé
The combined age structure of 22 red pine populations is balancedand uneven aged, with 2 periods of increased recruitment from 1805-1864and from 1925-1974. Individual populations can be separated into1) uneven-aged populations with constant recruitment occurring onxeric sites, 2) even-aged populations without regeneration occurringon mesic sites, and 3) uneven-aged populations, showing both a constantrecruitment and peak periods of regeneration, occurring on siteswith xeric and mesic portions. Although all fires registered, lethaland nonlethal, are generally asynchronous between sites, the firesof 1825 and 1944 seem to have affected large areas. Two mechanismsfor the maintenance of red pine were detected: self-regenerationof populations resistant to fires on xeric sites, and the transitorycolonization of mesic sites by populations susceptible to lethalfires and established by seed from distant seed sources. Red pinemay be restricted to lake landscapes because of the abundance ofsites protected from lethal fires. -from Authors
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@ARTICLE { BergeronGagnon1987,
AUTHOR = { Bergeron, Y. and Gagnon, D. },
TITLE = { Age structure of red pine ( Pinus resinosa Ait.) at its northernlimit in Quebec },
JOURNAL = { Canadian Journal of Forest Research },
YEAR = { 1987 },
VOLUME = { 17 },
PAGES = { 129-137 },
NUMBER = { 2 },
ABSTRACT = { The combined age structure of 22 red pine populations is balancedand uneven aged, with 2 periods of increased recruitment from 1805-1864and from 1925-1974. Individual populations can be separated into1) uneven-aged populations with constant recruitment occurring onxeric sites, 2) even-aged populations without regeneration occurringon mesic sites, and 3) uneven-aged populations, showing both a constantrecruitment and peak periods of regeneration, occurring on siteswith xeric and mesic portions. Although all fires registered, lethaland nonlethal, are generally asynchronous between sites, the firesof 1825 and 1944 seem to have affected large areas. Two mechanismsfor the maintenance of red pine were detected: self-regenerationof populations resistant to fires on xeric sites, and the transitorycolonization of mesic sites by populations susceptible to lethalfires and established by seed from distant seed sources. Red pinemay be restricted to lake landscapes because of the abundance ofsites protected from lethal fires. -from Authors },
OWNER = { brugerolles },
TIMESTAMP = { 2007.12.04 },
}
