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Titolo:
Balsam fir (Abies balsamea) establishment dynamics during a spruce budworm(Choristoneura fumiferana) outbreak: an evaluation of the impact of aging techniques
Autore:
Parent, S; Morin, H; Messier, C;
Indirizzi:
Univ Quebec, Dept Sci Fondamentales, Grp Rech Ecol Forestiere Interuniv, Chicoutimi, PQ G7H 2B1, Canada Univ Quebec Chicoutimi PQ Canada G7H 2B1 , Chicoutimi, PQ G7H 2B1, Canada Univ Quebec, Dept Sci Biol, Grp Rech Ecol Forestiere Interuniv, Montreal, PQ H3C 3P8, Canada Univ Quebec Montreal PQ Canada H3C 3P8 univ, Montreal, PQ H3C 3P8, Canada
Titolo Testata:
CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE
fascicolo: 3, volume: 31, anno: 2001,
pagine: 373 - 376
SICI:
0045-5067(200103)31:3<373:BF(BED>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUEBEC; FORESTS; REGENERATION; STANDS; AGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Parent, S Univ Quebec, Dept Sci Fondamentales, Grp Rech Ecol Forestiere Interuniv, Chicoutimi, PQ G7H 2B1, Canada Univ Quebec Chicoutimi PQ Canada G7H 2B1 mi, PQ G7H 2B1, Canada
Citazione:
S. Parent et al., "Balsam fir (Abies balsamea) establishment dynamics during a spruce budworm(Choristoneura fumiferana) outbreak: an evaluation of the impact of aging techniques", CAN J FORES, 31(3), 2001, pp. 373-376

Abstract

The effects of recurrent spruce budworm (Choristoneura fumiferana (Clem.))outbreaks on balsam fir (Abies balsamea (L. ) Mill.) mortality have been extensively studied in Canada. Most studies report substantial seedling recruitment of balsam fir during outbreaks when reproductive trees are dying. According to previous research, this contradiction could be due to inaccuracies in the conventional aging method. Counting the maximum number of growth rings found at the tree base would significantly underestimate tree age. Counting terminal bud scars found on the entire trunk, including buried stem,would give a more accurate tree age. In this study, we compare recruitmentdynamics obtained for aging seedlings in two balsam fir populations (about500 km apart) using (i) the conventional method and (ii) bud scar counts. For both populations, the conventional method shows substantial recruitmentduring adult mortality, while the second aging technique reveals reduced recruitment during the epidemic phase of the spruce budworm outbreak.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 00:53:35