Multiple co-inertia analysis: a tool for assessing synchrony in the temporal variability of aquatic communities

Multitable techniques are rarely used for investigating patterns in ecological data surveys despite their ability to deal with the spatial and/or temporal stability of assemblages. Based on a covariance optimisation criterion, Multiple Co-inertia analysis (MCOA) enables the simultaneous ordination o...

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Bibliographic Details
Published in:Comptes rendus. Biologies 2004, Vol.327 (1), p.29-36
Main Authors: Bady, Pierre, Dolédec, Sylvain, Dumont, Bernard, Fruget, Jean-François
Format: Article
Language:eng ; fre
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Animals
assemblages faunistiques
Biological and medical sciences
Ecology - statistics & numerical data
Ecosystem
Faunistic assemblages
France
Fresh Water
Freshwater
Fundamental and applied biological sciences. Psychology
General aspects
Invertebrates
multitable ordination
ordination multi-tableaux
structures temporelles
synchronisme
synchrony
Synecology
temporal structure
Time Factors
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Summary:Multitable techniques are rarely used for investigating patterns in ecological data surveys despite their ability to deal with the spatial and/or temporal stability of assemblages. Based on a covariance optimisation criterion, Multiple Co-inertia analysis (MCOA) enables the simultaneous ordination of several tables. Such analysis allows the representation of the stable vs. unstable part of the assemblage structure in comparison to a reference derived from each table. We used MCOA on multiple time series of invertebrate sampling to show that synchrony in the temporal variability of communities can establish between geographically distant locations despite the spatial and temporal plasticity of the faunistic responses to long-term changes in environmental conditions. To cite this article: P. Bady et al., C. R. Biologies 327 (2004). Malgré leur capacité à rendre compte de la persistance spatio-temporelle des assemblages, les analyses multi-tableaux sont encore peu utilisées en écologie. L'ACOM est une méthode d'ordination basée sur un critère d'optimisation de la covariance entre tableaux. Elle fournit une représentation des parties stables et instables de la variabilité des assemblages par rapport à une structure de référence, appelée compromis entre les tableaux. Nous illustrons le potentiel de l'ACOM sur des séries temporelles d'échantillonnage d'invertébrés pour montrer que le synchronisme des assemblages faunistiques entre plusieurs sites distants géographiquement s'instaure malgré la plasticité spatio-temporelle des réponses faunistiques aux changements à long terme des conditions environnementales. Pour citer cet article : P. Bady et al., C. R. Biologies 327 (2004).
ISSN:1631-0691
1768-3238
1768-3238
DOI:10.1016/j.crvi.2003.10.007