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Auteur Elena Kazakou |
Documents disponibles écrits par cet auteur (4)
Affiner la recherche4th international symposium on environmental weeds and invasive plants. Abstracts. / Guillaume Fried (2014)
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Résumés (2014)Adobe Acrobat PDFConsistent response of weeds according to Grime's CSR strategies along disturbance and resource gradients in Bordeaux vineyards / Guillaume Fried in Weed Research, 62 (5) (2022)
Titre : Consistent response of weeds according to Grime's CSR strategies along disturbance and resource gradients in Bordeaux vineyards Type de document : Imprimé Auteurs : Guillaume Fried ; Cécile Blanchet ; Loreleï Cazenave ; Marie-Charlotte Bopp ; Elena Kazakou ; Aurélie Metay ; Maxime Christen ; Didier Alard ; Stéphane Cordeau Année de publication : 2022 Article en page(s) : 347-359 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Ecologie et géographie botanique
[CBNPMP-Thématique] Formation herbeuse, ligneuse (vigne, verger..)Résumé : Vineyards are an appropriate model for testing the filtering effect of management practices on weed communities, as a wide range of practices (tillage, herbicides and mowing) is implemented. The aim of this study is to highlight which trait values are selected by each practice in different environmental conditions, with special references to Grime's CSR strategies. A combination of a multivariate analysis (RLQ) and the fourth-corner analysis was used to analyse 400 floristic samples belonging to 100 vineyards in the wine-growing region of Bordeaux (France). The main structure of vineyard weed communities was shaped by the opposition between mowing, favouring hemicryptophytes with a competitive strategy, and soil tillage, favouring therophytes and nutrient-demanding species with a ruderal strategy. Secondly, the vineyard weed communities differed according to the trophic status of the soil. Vineyards on acidic, sandy soils with low organic matter were characterised by small-seeded annuals with a stress-tolerant strategy whereas vineyards with clayey, calcareous soils rich in organic matter, harboured larger perennial nitrophilous species with large seeds and a competitive strategy. Our study is the first to show that weed species responded consistently to two independent gradients with specific traits associated with disturbance (life cycle and SLA) and soil resources (plant height and seed mass) gradients. Based on knowledge of the soil characteristics, it becomes possible to predict which type of weeds will develop according to the combination of practices applied on the vineyard rows and inter-rows. Lien pérenne : DOI : 10.1111/wre.12549 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=153916
in Weed Research > 62 (5) (2022) . - 347-359Fried, Guillaume, Blanchet, Cécile, Cazenave, Loreleï, Bopp, Marie-Charlotte, Kazakou, Elena, Metay, Aurélie, Christen, Maxime, Alard, Didier, Cordeau, Stéphane 2022 Consistent response of weeds according to Grime's CSR strategies along disturbance and resource gradients in Bordeaux vineyards. Weed Research, 62(5): 347-359.Documents numériques
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article (2022)URL
Titre : A plant trait-based response-and-effect framework to assess vineyard inter-row soil management Type de document : Imprimé Auteurs : Elena Kazakou ; Guillaume Fried ; J. Richarte ; O. Gimenez ; Cyrille Violle ; Aurélie Metay Année de publication : 2016 Article en page(s) : 373-388 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Messicole
[CBNPMP-Thématique] Formation herbeuse, ligneuse (vigne, verger..)Résumé : Biodiversity impacts ecosystem properties and the ecosystem services provided by those ecosystems. As a result, promoting plant diversity in agricultural systems has been a key issue in agriculture over recent years. In this context, weeds have an important role in maintaining field biodiversity, when it is balanced with their potential negative impact on crop production. Functional trait diversity, rather than the diversity of species per se, is a facet of biodiversity most directly related to species and community responses to management practices, with subsequent consequences for ecosystem services. Trait-based approaches, originally developed in the field of comparative ecology, allowed the description of weed species responses to management practices in annual crop systems. Here, we aimed to extend the trait-based approach to the spontaneous vegetation of vineyards. First, we propose a brief summary of current knowledge about weed communities in vineyards. Then we show how the relationships between management practices, weeds and grape vines can be translated into a response–effect framework: soil management practices (tillage, cover crops, spontaneous vegetation) can be considered as environmental filters that determine the composition and structure of vegetation, which, in turn, modify grapevine growth conditions in the vineyard. Finally, we tested this framework in a Mediterranean vineyard where, for 2 years, we characterized the responses of different components of weed communities (taxonomic and functional composition) in three inter-row management practices (tillage, cover crops and mowing spontaneous vegetation) and their effects on several grapevine processes (vine yield, vine leaf water potential and assimilable nitrogen in must). Lien pérenne : DOI : 10.1080/23818107.2016.1232205 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=153924
in Botany letters > 163 (4) (December 2016) . - 373-388Kazakou, Elena, Fried, Guillaume, Richarte, J., Gimenez, O., Violle, Cyrille, Metay, Aurélie 2016 A plant trait-based response-and-effect framework to assess vineyard inter-row soil management. Botany letters, 163(4): 373-388.Exemplaires (1)
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article (2016)URL
Titre : Relative importance of region, seasonality and weed management practice effects on the functional structure of weed communities in French vineyards Type de document : Imprimé Auteurs : Marie-Charlotte Bopp ; Elena Kazakou ; Aurélie Metay ; Guillaume Fried Année de publication : 2022 Article en page(s) : 107892 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Formation herbeuse, ligneuse (vigne, verger..)
[CBNPMP-Thématique] MessicoleRésumé : Winegrowers have diversified their weed management practices over the last two decades changing the structure and the composition of weed communities. Complementary to taxonomic studies, trait-based approaches are promising ways for a better understanding of weed community responses to environmental and agronomic filters. In the present study, the impacts of climate, soil characteristics, seasons and weed management practices (chemical weeding, tillage and mowing) were assessed on weed communities from 46 plots in three French wine-growing regions (Champagne, Languedoc and Rhône valley). These agro-environmental gradients structuring weed communities according to their combinations of traits were highlighted using multivariate analysis (RLQ). The impacts of these filters on Community Weighted Means (CWM) and Community Weighted Variance (CWV) of weed communities were analysed using mixed and null modelling. Our results showed that spatio-temporal and weed management practice variables explained from 13% to 48% of the total variance of CWM (specific leaf area, maximum height, seed mass, flowering onset and duration and lateral spread). Region, seasonality and management practices explained 53%, 28% and 19% of CWM marginal variance, respectively. Weed management impacted CWM and CWV through two main gradients: (i) a soil disturbance gradient with high mechanical disturbance of soil in tilled plots and low mechanical disturbance in chemically weeded plots and (ii) a vegetation cover gradient with high vegetation abundance in mowed plots compared to barer soils in tilled and chemically weeded plots. In Languedoc, chemical weeding filtered weed communities with ruderal strategy trait values (low seed mass, small-stature) while mowed communities were more competitive (higher seed mass, higher stature and lower SLA). In Languedoc and Champagne, tillage favoured communities with high seed mass that increases the viability of buried seeds and high lateral spread values associated to the ability to resprout after tillage. This study demonstrated that trait-based approaches can be successfully applied to perennial cropping systems such as vineyards, in order to understand community assembly to better guide weed management practices. Lien pérenne : DOI : 10.1016/j.agee.2022.107892 / HAL : hal-04024218
Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=153939
in Biological conservation > 330 (2022) . - 107892Bopp, Marie-Charlotte, Kazakou, Elena, Metay, Aurélie, Fried, Guillaume 2022 Relative importance of region, seasonality and weed management practice effects on the functional structure of weed communities in French vineyards. Biological conservation, 330: 107892.Documents numériques
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