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

Bady, Pierre; Dolédec, Sylvain; Dumont, Bernard; Fruget, Jean‐François

doi:10.1016/j.crvi.2003.10.007

Cited by 46 publications

(31 citation statements)

References 32 publications

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“…Such statistical methods have only rarely been used in ecology, despite their ability to deal with the spatial and/or temporal stabilities of communities (e.g. Gaertner et al 1998;Bady et al 2004).…”

Section: Summarizing Environmental and Biological Changesmentioning

confidence: 99%

Impacts of global changes and extreme hydroclimatic events on macroinvertebrate community structures in the French Rhône River

Daufresne

Bady

Fruget³

2007

Oecologia

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108

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We assessed the temporal changes in and the relationships between the structures of the macroinvertebrate communities and the environmental conditions of the French Rhône River (the river from Lake Geneva to the Mediterranean Sea) over the last 20 years (1985-2004). Multisite environmental and biological datasets were analysed using multiple CO-inertia analysis (MCOA) and Procrustean analysis. Changes in environmental conditions were mainly marked by an improvement in water quality between 1985 and 1991 and by an increase in water temperature from 1985 onwards due to climate change. Improvement in water quality seemed to delay changes in community structures under global warming. We then observed trends in community structures coupled with high temperatures and a decrease in oxygen content. Interestingly, we observed both gradual changes and rapid switches in community states. These shifts seemed coupled to extreme hydroclimatic events (i.e. pulse disturbances). Floods and the 2003 heatwave enhanced the development of eurytolerant and invasive taxa which were probably able to take advantage of gradual warming environmental conditions. Despite various site-specific "press" constraints (e.g. hydropower schemes, nuclear power plants), similar changes in community structures were observed along the French Rhône River. Such consistency in temporal processes at large geographical scales underlined the strength of hydroclimatic constraints on community dynamics compared to specific local disturbances. Finally, community structures did not show any sign of recovery, and their relative sensitivities to extreme hydroclimatic events seemed to increase with time. Thus, our results suggest that global changes may reduce the resilience of current community states.

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Section: Summarizing Environmental and Biological Changesmentioning

confidence: 99%

Impacts of global changes and extreme hydroclimatic events on macroinvertebrate community structures in the French Rhône River

Daufresne

Bady

Fruget³

2007

Oecologia

Self Cite

108

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“…Consequently, as in coinertia analysis, MCOA optimizes a covariance among several tables and, thus, assesses the correlation between each reference sites species and trait composition (see e.g. Bady et al, 2004;Bêche et al, 2009 for an example of use). We considered the first MCOA axis score obtained for each reference sites and each disturbed sites, respectively, for depicting their common temporal evolution, i.e.…”

Section: Discussionmentioning

confidence: 99%

“…The term synchronism is often applied to microbial aquatic communities (e.g., Crump and Hobbie, 2005;Kent et al, 2007;Crump et al, 2009) and into a lesser extent to freshwater invertebrates (e.g., Bady et al, 2004;Bêche et al, 2009). However, this concept is implicit when addressing the seasonal patterns of communities in the same region due, for example, to insect life cycles (periods of emergence, eggs postures and larval development).…”

Section: Introductionmentioning

confidence: 99%

Human disturbance affects the long-term spatial synchrony of freshwater invertebrate communities

Feio¹,

Dolédec

Graça

2015

Environmental Pollution

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“…The mathematical principles of the method are fully described by their authors [17], but we provide essential steps in the appendix; examples of its utilization can be found in ecology studies [4,30].…”

Section: Multiple Co-inertia Analysismentioning

confidence: 99%

“…The multiple co-inertia analysis (MCOA) is dedicated to this purpose. MCOA was first described by Chessel and Hanafi [17], and is used in ecology [4,30].…”

mentioning

confidence: 99%

Consensus genetic structuring and typological value of markers using multiple co-inertia analysis

et al. 2007

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-Working with weakly congruent markers means that consensus genetic structuring of populations requires methods explicitly devoted to this purpose. The method, which is presented here, belongs to the multivariate analyses. This method consists of different steps. First, single-marker analyses were performed using a version of principal component analysis, which is designed for allelic frequencies (%PCA). Drawing confidence ellipses around the population positions enhances %PCA plots. Second, a multiple co-inertia analysis (MCOA) was performed, which reveals the common features of single-marker analyses, builds a reference structure and makes it possible to compare single-marker structures with this reference through graphical tools. Finally, a typological value is provided for each marker. The typological value measures the efficiency of a marker to structure populations in the same way as other markers. In this study, we evaluate the interest and the efficiency of this method applied to a European and African bovine microsatellite data set. The typological value differs among markers, indicating that some markers are more efficient in displaying a consensus typology than others. Moreover, efficient markers in one collection of populations do not remain efficient in others. The number of markers used in a study is not a sufficient criterion to judge its reliability. "Quantity is not quality".congruence / multiple co-inertia analysis / biodiversity / microsatellite / allelic frequencies

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

Cited by 46 publications

References 32 publications

Impacts of global changes and extreme hydroclimatic events on macroinvertebrate community structures in the French Rhône River

Impacts of global changes and extreme hydroclimatic events on macroinvertebrate community structures in the French Rhône River

Human disturbance affects the long-term spatial synchrony of freshwater invertebrate communities

Consensus genetic structuring and typological value of markers using multiple co-inertia analysis

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