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Titolo:
GROWTH AND MORPHOLOGICAL RESPONSES OF YELLOW BIRCH, SUGAR MAPLE, AND BEECH SEEDLINGS GROWING UNDER A NATURAL LIGHT GRADIENT
Autore:
BEAUDET M; MESSIER C;
Indirizzi:
UNIV QUEBEC,DEPT SCI BIOL,GRP RECH ECOL FORESTIERE,CP 8888,SUCC CTR VILLE MONTREAL PQ H3C 3P8 CANADA UNIV QUEBEC,DEPT SCI BIOL,GRP RECH ECOL FORESTIERE MONTREAL PQ H3C 3P8 CANADA
Titolo Testata:
Canadian journal of forest research (Print)
fascicolo: 7, volume: 28, anno: 1998,
pagine: 1007 - 1015
SICI:
0045-5067(1998)28:7<1007:GAMROY>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCOTS PINE STANDS; SHADE TOLERANCE; CANOPY RECRUITMENT; CROWN ARCHITECTURE; EFFICIENT METHOD; DECIDUOUS TREES; GAP DYNAMICS; FOREST; SAPLINGS; ACER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
49
Recensione:
Indirizzi per estratti:
Citazione:
M. Beaudet e C. Messier, "GROWTH AND MORPHOLOGICAL RESPONSES OF YELLOW BIRCH, SUGAR MAPLE, AND BEECH SEEDLINGS GROWING UNDER A NATURAL LIGHT GRADIENT", Canadian journal of forest research (Print), 28(7), 1998, pp. 1007-1015

Abstract

Height and lateral growth, biomass distribution, leaf morphology, andcrown architecture were studied in yellow birch (Betula alleghaniensis Britton), sugar maple (Acer saccharum Marsh.), and beech (Fagus grandifolia Ehrh.) seedlings growing under 1-50% of above-canopy light in a sugar maple stand, in Quebec. All three species showed increasing growth with increasing light, but growth of yellow birch was higher and more responsive than that of sugar maple and beech. All three species showed typical sun-shade morphological responses, such as decreasing specific leaf area and leaf area ratio, and increasing leaf area index,with increasing light availability. Sugar maple was morphologically more plastic than the other species. It showed variations in biomass allocation to leaves and branches, a decrease in branch length to seedling height ratio, and a marked increase in the ratio of leaf area to stem length. Although our results clearly demonstrate the ability of these three species to modify several of their morphological features in response to variations in light, they do not show a clear relationshipbetween species shade tolerance and morphological response to light variations. We suggest that species-specific developmental patterns mayact as important constraints to morphological acclimation to light variation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 15:22:21