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Titolo:
ABUNDANCE, GROWTH AND ALLOMETRY OF RED RASPBERRY (RUBUS-IDAEUS L) ALONG A NATURAL LIGHT GRADIENT IN A NORTHERN HARDWOOD FOREST
Autore:
RICARD JP; MESSIER C;
Indirizzi:
UNIV QUEBEC,DEPT SCI BIOL,GREF,CP 8888,SUCCURSALE CTR VILLE MONTREAL PQ H3C 3P8 CANADA
Titolo Testata:
Forest ecology and management
fascicolo: 1-3, volume: 81, anno: 1996,
pagine: 153 - 160
SICI:
0378-1127(1996)81:1-3<153:AGAAOR>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUCCESSION; COMPETITION; STAND;
Keywords:
LEAF DISTRIBUTION; CANOPY DISTURBANCE; PARTIAL CUTTING; ALLOCATIONAL PLASTICITY; DECIDUOUS STAND;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
J.P. Ricard e C. Messier, "ABUNDANCE, GROWTH AND ALLOMETRY OF RED RASPBERRY (RUBUS-IDAEUS L) ALONG A NATURAL LIGHT GRADIENT IN A NORTHERN HARDWOOD FOREST", Forest ecology and management, 81(1-3), 1996, pp. 153-160

Abstract

The effects of a natural light gradient on abundance, growth and allometry of red raspberry (Rubus idaeus L.) was investigated in 1993 in atemperate deciduous forest (near Quebec city, Canada) in which 30% oftotal basal area had been removed in 1989. One hundred and three l-mzplots were sampled to evaluate red raspberry abundance along a light gradient ranging from 3 to 40% of above canopy photosynthetic photon flux density (% PPFD). No red raspberry was found under closed forest where PPFD was less than 7%, whereas it was always present above 25% PPFD. Height growth (R(2) = 0.302, P < 0.001) and total biomass (R(2) = 0.372; P < 0.001) in first-year stems were positively related to % PPFD. Strong allometric relationships were found between height, stem diameter and biomass parameters. The proportion of the total biomass in stem, petiole and leaf did not change along the light gradient, This lack of aboveground allocational plasticity may partially explain red raspberry's inability to survive under low light levels.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 00:52:12