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Titolo:
Plant communities of New Brunswick in relation to environmental variation
Autore:
Roberts, MR; Wuest, LJ;
Indirizzi:
Univ New Brunswick, Fac Forestry & Environm Management, Fredericton, NB E3B 6C2, Canada Univ New Brunswick Fredericton NB Canada E3B 6C2 cton, NB E3B 6C2, Canada
Titolo Testata:
JOURNAL OF VEGETATION SCIENCE
fascicolo: 3, volume: 10, anno: 1999,
pagine: 321 - 334
SICI:
1100-9233(199906)10:3<321:PCONBI>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
CANONICAL CORRESPONDENCE-ANALYSIS; NORTHERN LOWER MICHIGAN; GRADIENT ANALYSIS; BIOGEOGRAPHICAL CLASSIFICATION; MULTIVARIATE-ANALYSIS; SCOTTISH UPLANDS; VEGETATION; FOREST; ORDINATION;
Keywords:
canonical correspondence analysis; climate; cluster analysis; landscape pattern; plant distribution; soil; topography; vegetation-environment relationship;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Roberts, MR Univ New Brunswick, Fac Forestry & Environm Management, POB 44555, Fredericton, NB E3B 6C2, Canada Univ New Brunswick POB 44555 Fredericton NB Canada E3B 6C2 ada
Citazione:
M.R. Roberts e L.J. Wuest, "Plant communities of New Brunswick in relation to environmental variation", J VEG SCI, 10(3), 1999, pp. 321-334

Abstract

The objective of this study was to quantitatively describe vegetation-environment relationships at a regional scale within the Province of New Brunswick, Canada, using vegetation and environment data from 3947 provincial forestry sample plots. The major plant community types in the province were identified using cluster analysis. Relationships of these communities to climate, topography and soil variables were analyzed by Canonical Correspondence Analysis (CCA), using both a reduced data set consisting of cluster likelihood scores x sample plots and an unreduced species x sample plots data matrix. The vegetation types and major axes of environmental variation were mapped to examine the geographic distributions of these factors within the province. Eight communities were identified and described in terms of enhanced/reduced species (significantly higher or lower frequencies of occurrencein a specific community type relative to all plots) and common species (species in the community type with the highest frequencies of occurrence). The canonical axes explained 25% of the variation in the vegetation cluster data. Vegetation composition was related to three major environmental gradients representing climate and elevation, soil moisture, and soil fertility. The geographic distributions of vegetation communities exhibited predictable but weak correspondence to the geographic distributions of individual environmental factors. Our findings emphasize the overriding importance of climate and topography and the secondary importance of soil factors in controlling vegetation pattern at the regional scale.

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Documento generato il 05/12/20 alle ore 01:11:43