Stabilité temporelle des structures spatiales des peuplements piscicoles des régions Languedoc-Roussillon et Provence-Alpes-Côte d'Azur

Blanc, L.; Beaudou, D.

doi:10.1051/kmae:1998050

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…We also used Foucart' FCA analysis, based on a logic of FCA, which allows approaching three-dimensional data type: species-sampling sites-campaigns. It lets demonstrating the effectiveness of this method as an objective way to organize sampling sites according to the similarities between their stands and to appreciate how species react to environmental factors (Blanc and Beaudou, 1998;Blanc, 2000;Taybi, 2016;Mabrouki et al, 2019a).…”

Section: Methodsmentioning

confidence: 99%

Longitudinal distribution of macroinvertebrate in a very wet North African Basin: Oued Melloulou (Morocco)

Taybi

Mabrouki‍

Dakki

et al. 2020

Ann. Limnol. - Int. J. Lim.

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Melloulou River, which is located in Middle Atlas of Morocco, is a good example of a very wet and poorly known basin, and therefore of special conservation concern. The aim of this study was to draw up an initial inventory of the benthic macroinvertebrates taxa, and to analyze its longitudinal distribution in the basin, particularly searching for the main abiotic factors addressing its zonation for improving future management and conservation actions. The study allowed identifying 161 taxa belonging to 127 genera and 80 families, most new records for northeast Morocco. The biotypology, which was studied by using Foucart' Factorial Correspondence Analysis (FCA), Partial Triadic analysis (PTA), and IndVal showed a longitudinal distribution of macroinvertebrates mainly governed by altitude, slope and current velocity. The studied biota revealed the presence of three assemblages and an important number of ubiquitous species not included in any group. The first group is located in the upper courses of Melloulou River representing a community proper of a crenon-rhithron zone; the second occurs in the middle and lower courses, and clearly reflects the community of a large potamon; the third one is a mixture of taxa capable to colonize the entire study area. Our finding, highlight the singular aquatic biodiversity occurring in the Melloulou River and its extraordinary changing water dynamic over time, which are key factors for future monitoring, as well as managing and conservation actions.

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Section: Methodsmentioning

confidence: 99%

Longitudinal distribution of macroinvertebrate in a very wet North African Basin: Oued Melloulou (Morocco)

Taybi

Mabrouki‍

Dakki

et al. 2020

Ann. Limnol. - Int. J. Lim.

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“…Foucart' FCA, based on a logic of FCA, allows approaching three-dimensional data type: species-stationscampaigns. Although the application examples in ecology are relatively rare, its use demonstrates the effectiveness of this method as a judicious way of organizing stations according to the similarities between their stands and to appreciate how their species react to environmental factors (Baran, 1995;Gaertner, 1997;Blanc and Beaudou, 1998;Blanc, 2000;Taybi, 2016).…”

Section: Approach Methodsmentioning

confidence: 99%

Biotypology of stream macroinvertebrates from North African and semi arid catchment: Oued Za (Morocco)

Mabrouki‍¹,

Taybi²,

Alami

et al. 2019

Knowl. Manag. Aquat. Ecosyst.

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The aim of this study is to investigate the longitudinal zonation of macroinvertebrates assemblages in the Za River basin, the main tributary of Moulouya River (Morocco). This work carried out in three campaigns between March and August 2014 on 12 stations selected. This study allowed the identification of 137 species classified in 109 genera and 65 families. In addition to the physicochemical parameters measured three times in each station, a description of the aquatic environment was made to characterize each of the stations surveyed; in particular with regard to altitude, slope, Emberger quotient, thermal amplitude, kilometers at the source, current velocity and bioclimatic zones. The treatment of this benthic population as well as the stations environmental descriptors, using Foucart' factorial correspondence analysis (FCA) and partial triadic analysis (PTA) respectively, allowed for the development of a typology of this watercourse, where altitude and current speed seem to play a major role in the distribution of benthic invertebrates. The biocenotic study revealed the presence of three stationary groupings corresponding to four faunal groups.

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“…Partial Triadic Analysis (PTA), used with such multi-table data, was computed to elucidate temporal patterns of the phytoplankton community composition (Figure 2, package ade4 for R, Dray et al, 2007). This method allows simultaneous principal component analyses of a set of tables by searching for an average temporal structure called compromise, and studying the spatial stability of this structure (Blanc and Beaudou, 1998). In addition to the analysis performed at genus level, the PTA was also carried out at upper levels (e.g.…”

Section: Multivariate Analyses Of Phytoplankton Community Compositionmentioning

confidence: 99%

Temporal changes in the phytoplankton community along the French coast of the eastern English Channel and the southern Bight of the North Sea

Hernández-Fariñas

Soudant

Barillé

et al. 2013

ICES Journal of Marine Science

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Long-term trends in the phytoplankton community along the French coast of the English Channel and southern Bight of the North Sea were studied and related to physico-chemical factors and large-climatic indices. Phytoplankton and hydrological data were acquired through three transects. Sampling took place between 1992 and 2011 as part of the French Phytoplankton Monitoring Network (REPHY) and the Regional Nutrients Monitoring Network (SRN). Trends in time-series were identified with dynamic linear models tailored to environmental monitoring data characteristics (e.g. irregular sampling frequency, missing data). Temporal and spatial patterns in the phytoplankton community were explained with a partial triadic analysis. Relationships between the phytoplankton community composition, environmental factors, and climatic indices were assessed using a redundancy analysis (RDA). The analyses revealed long-term changes in the community composition, characterized by a temporal structure that remained common to all transects. The abundance of some groups of taxa such as the one composed by Gymnodinium and Gyrodinium, as well as the group of Pseudo-nitzschia increased during the study period, whereas the abundance of other taxa as for example Guinardia and the group of Coscinodiscus and Stellarima globally decreased. More generally, the proportion of dinoflagellates relative to diatoms increased. Trends in environmental variables were also observed in most sites and related to decreases in nutrient concentrations and an increasing trend in salinity. The RDA indicated that the Atlantic Multidecadal Oscillation index and salinity were the main factors defining the temporal structure of the phytoplankton community. This suggests that variations observed in the phytoplankton community are linked to hydro-climatic changes in the coastal environment.

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Stabilité temporelle des structures spatiales des peuplements piscicoles des régions Languedoc-Roussillon et Provence-Alpes-Côte d'Azur

Cited by 10 publications

References 4 publications

Longitudinal distribution of macroinvertebrate in a very wet North African Basin: Oued Melloulou (Morocco)

Longitudinal distribution of macroinvertebrate in a very wet North African Basin: Oued Melloulou (Morocco)

Biotypology of stream macroinvertebrates from North African and semi arid catchment: Oued Za (Morocco)

Temporal changes in the phytoplankton community along the French coast of the eastern English Channel and the southern Bight of the North Sea

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