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Titolo:
Composition, structure, light attenuation and nutrient content of the understorey vegetation in a Eucalyptus sieberi regrowth stand 6 years after thinning and fertilisation
Autore:
Bauhus, J; Aubin, I; Messier, C; Connell, M;
Indirizzi:
Australian Natl Univ, Dept Forestry, Canberra, ACT 0200, Australia Australian Natl Univ Canberra ACT Australia 0200 rra, ACT 0200, Australia Univ Quebec, Dept Sci Biol, GREFI, Montreal, PQ H3C 3P8, Canada Univ Quebec Montreal PQ Canada H3C 3P8 REFI, Montreal, PQ H3C 3P8, Canada CSIRO Forestry & Forest Prod, Kingston, ACT 2604, Australia CSIRO Forestry& Forest Prod Kingston ACT Australia 2604 2604, Australia
Titolo Testata:
FOREST ECOLOGY AND MANAGEMENT
fascicolo: 1-3, volume: 144, anno: 2001,
pagine: 275 - 286
SICI:
0378-1127(20010415)144:1-3<275:CSLAAN>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEGUME BOSSIAEA-LAIDLAWIANA; REGNANS F-MUELL; DECIDUOUS FORESTS; EFFICIENT METHOD; MANAGED FORESTS; BOREAL FORESTS; DIVERSITY; NITROGEN; FERTILIZATION; COMPETITION;
Keywords:
thinning; fertilisation; understorey composition; eucalypt forest; light attenuation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Bauhus, J Australian Natl Univ, Dept Forestry, Canberra, ACT 0200, Australia Australian Natl Univ Canberra ACT Australia 0200 200, Australia
Citazione:
J. Bauhus et al., "Composition, structure, light attenuation and nutrient content of the understorey vegetation in a Eucalyptus sieberi regrowth stand 6 years after thinning and fertilisation", FOREST ECOL, 144(1-3), 2001, pp. 275-286

Abstract

In this study, we investigated the effects of commercial thinning and fertiliser application 6 years after treatment on the structure, composition, and nutrient concentrations of understorey vegetation in a Eucalyptus sieberi regrowth forest in East Gippsland. The stand was thinned at age 26 years,reducing the basal area by ca. 50% and lowering the stocking from ca. 1350to ca. 250 stems ha(-1). Whereas the species diversity and richness of theunderstorey were not significantly affected by the treatments, thinning promoted the abundance of herbaceous species, and fertilisation increased theproportion of ground ferns such as Pteridium esculentum. Fertilisation with 100 kg N ha(-1) and 100 kg P ha(-1) decreased the foliage N concentrationin Tetrarrhena juncea and Gonocarpus teucrioides, and increased the foliage P concentrations in four of the five most frequent species. This suggested that the understorey was more limited by P than by N. The photosynthetically active radiation above the understorey was 41% of that in the open in thinned stands and 32-34% in unthinned stands, showing that 6 years after thinning the canopy density had not yet returned to pre-treatment levels. However, light attenuation within the understorey did not differ among treatments, confirming that the understorey cover had not increased in response toincreased light and nutrient availability. The small changes in the understorey may be attributed to the fact that light and nutrients an not the major factors limiting its development, and that most species are well adapted to disturbance. (C) 2001 Elsevier Science B.V. ALI rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 14:43:09