About: Vegetation of the Boreal Forests South of James Bay: Non‐Centered Component Analysis of the Vascular Flora

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About: Vegetation of the Boreal Forests South of James Bay: Non‐Centered Component Analysis of the Vascular Flora Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Vegetation of the Boreal Forests South of James Bay: Non‐Centered Component Analysis of the Vascular Flora
Creator	Carleton, T Maycock, P
source	PMC
abstract	Results from an extensive vegetation survey of 1971 boreal forest stands, encompassing a full spectrum of succession and site types in the regions of Ontario and Quebec south of James Bay, are reported. Non—centered principal component analysis plus varimax rotation (nodal component analysis) is applied to overstory and understory data in order to detect vegetational noda. The overstory data are inherently more structured (i.e., contain more distinct subgroups) than those of the understory. An exception is seen with groups in which Abies balsamea plays a prominent role. These are interpreted as stages in various successions of which only one, a Betula papyrifera to A. balsamea sequence, represents the complete transition from one canopy dominant to another. The understory noda are summarized in terms of the compositional and environmental features of stands belonging to each nodum. Relationships among the understory noda are summarized in a multidimensional scaling ordination which is derived directly from similarity values (conjunction coefficients) representing the overlap between pairs of noda. Two major environmental gradients seem to affect understory composition. These are a site moisture—nutrient concentration gradient and a general fertility—productivity gradient. Canopy composition and understory vegetation are compared by nodal conjunction between the two analyses. Groups of noda, representing wet bog forests and also upland mesic forests, show moderate to good coincidence but beyond this little canopy specificity emerges. These results indicate that overstory—understory coincidence is due primarily to similar site requirements. Understory species' response to an overstory succession is examined. Many abundant herbs seem indifferent to dramatic canopy change. This observation and results from nodal component analysis are discussed with respect to forest fire.
has issue date	1980-10-01(xsd:dateTime)
bibo:doi	10.2307/1936838
has license	no-cc
sha1sum (hex)	0be2b82dc8f666897e34c57a3d1bea1e95539b38
schema:url	https://doi.org/10.2307/1936838
resource representing a document's title	Vegetation of the Boreal Forests South of James Bay: Non‐Centered Component Analysis of the Vascular Flora
has PubMed Central identifier	PMC7163557
schema:publication	Ecology
resource representing a document's body	covid:0be2b82dc8f666897e34c57a3d1bea1e95539b38#body_text
is schema:about of	named entity 'FULL SPECTRUM' named entity 'Quebec south' named entity 'principal component analysis' named entity 'understory' named entity 'James Bay' named entity 'understory' named entity 'dendrogram' named entity 'spruce budworm' named entity 'Varimax rotation' named entity 'centroid' named entity 'understory' named entity 'centroid' named entity 'dendrogram' named entity 'Larix laricina' named entity 'Populus balsamifera' named entity 'latitude' named entity 'understory' named entity 'vascular plants' named entity 'rhizome' named entity 'cross-product matrix' named entity 'black spruce' named entity 'dendrogram' named entity 'Oxalis montana' named entity 'multivariate analysis' named entity 'Aralia nudicaulis' named entity 'Quebec south' named entity 'balsam fir' named entity 'PCA' named entity 'balsam poplar' named entity 'forest canopy' named entity 'overstory' named entity 'North America' named entity 'nonmetric multidimensional scaling' named entity 'Populus tremuloides' named entity 'overstory' named entity 'fundamental number' named entity 'understory' named entity 'wet-mesic' named entity 'P. banksiana' named entity 'mosses' named entity 'understory' named entity 'latitude' named entity 'balsam fir' named entity 'boreal forest region' named entity 'vascular plants' named entity 'varimax rotation' named entity 'Populus balsamifera' named entity 'understory' named entity 'successional sequence' named entity 'mesic' named entity 'subarctic' named entity 'boreal forest' named entity 'overstory' named entity 'magnesium' named entity 'phosphorus' named entity 'Candle Lake' named entity 'tree species' named entity 'Mesozoic' named entity 'Pinus banksiana' named entity 'Maianthemum canadense' named entity 'University of Guelph' named entity 'broad-leaved tree' named entity 'Ontario' named entity 'Larix laricina' named entity 'boreal forest region' named entity 'Maianthemum canadense' named entity 'tree species' named entity 'Picea glauca' named entity 'overstory' named entity 'Thuja occidentalis' named entity 'coefficient matrix' named entity 'Picea glauca' named entity 'Paleozoic' named entity 'understory' named entity 'mineral soil' named entity 'James Bay' named entity 'understory' named entity 'Betula papyrifera' named entity 'Picea mariana' named entity 'tree species' named entity 'mixed forest' named entity 'Choristoneura fumiferana'

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