Indices for Detecting Differences in Species Composition: Some Simplifications of RDA and CCA

We provide algebraic simplifications for the redundancy analysis (RDA) eigenvalue and the canonical correspondence analysis (CCA) eigenvalue in the special case of permanent plots sampled twice. The indices for RDA and CCA are interrelated and are intuitively interpretable. These simplifications als...

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Veröffentlicht in:	Ecology (Durham) 2008-06, Vol.89 (6), p.1769-1771
Hauptverfasser:	Palmer, Michael W., McGlinn, Daniel J., Westerberg, Lars, Milberg, Per
Format:	Artikel
Sprache:	eng
Schlagworte:	Algebra Animal and plant ecology Animal, plant and microbial ecology Aquatic ecology Biological and medical sciences canonical correspondence analysis Coastal ecology Ecological genetics Ecology Ecosystem Eigenvalues Environmental Monitoring - methods Fundamental and applied biological sciences. Psychology General aspects Landscape ecology Models, Biological monitoring NATURAL SCIENCES NATURVETENSKAP Ordination ordination eigenvalues permanent plots Population ecology redundancy analysis Species split-plot design Statistical variance Synecology
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Beschreibung
Zusammenfassung:	We provide algebraic simplifications for the redundancy analysis (RDA) eigenvalue and the canonical correspondence analysis (CCA) eigenvalue in the special case of permanent plots sampled twice. The indices for RDA and CCA are interrelated and are intuitively interpretable. These simplifications also apply to simple split-plot designs and to a balanced design with two independent samples.
ISSN:	0012-9658 1939-9170 1939-9170
DOI:	10.1890/07-0842.1