Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 503722
Title Canonical correspondence analysis and related multivariate methods in aquatic ecology
Author(s) Braak, Cajo J.F. Ter; Verdonschot, Piet F.M.
Source Aquatic Sciences 57 (1995)3. - ISSN 1015-1621 - p. 255 - 289.
Department(s) Biometris (PPO/PRI)
Alterra - Climate change and adaptive land and water management
Publication type Refereed Article in a scientific journal
Publication year 1995
Abstract Canonical correspondence analysis (CCA) is a multivariate method to elucidate the relationships between biological assemblages of species and their environment. The method is designed to extract synthetic environmental gradients from ecological data-sets. The gradients are the basis for succinctly describing and visualizing the differential habitat preferences (niches) of taxa via an ordination diagram. Linear multivariate methods for relating two set of variables, such as PLS2, canonical correlation analysis and redundancy analysis, are less suited for this purpose because niches are often unimodal functions of habitat variables. After pointing out the key assumptions underlying CCA, the paper focusses on the interpretation of CCA ordination diagrams. Subsequently, some advanced uses, such as ranking environmental variables in importance and the statistical testing of effects are illustrated on a typical macroinvertebrate data-set. The paper closes with comparisons with correspondence analysis, discriminant analysis, PLS2 and co-inertia analysis.
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