The interspecific and intraspecific variation of functional traits in weeds: diversified ecological strategies within arable fields

Perronne, Rémi; Gaba, Sabrina; Cadet, Émilie; Corre, Valérie Le

doi:10.1080/12538078.2013.868320

Cited by 24 publications

(21 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, functional differences between arable weeds and non‐weeds were investigated by comparing each trait distribution separately between the two pools. For LHS traits, we permuted trait values between pools (pool sizes kept constant) and calculated functional overlap, measured as the area common to both trait distributions (in %), under a null hypothesis of no functional difference between pools (Perronne et al., ). We simulated 1000 null overlap values and compared them to the observed overlap with actual species trait values, with a significance threshold of 0.05.…”

Section: Methodsmentioning

confidence: 99%

What makes a weed a weed? A large‐scale evaluation of arable weeds through a functional lens

Bourgeois

Munoz

Fried

et al. 2019

American J of Botany

Self Cite

View full text Add to dashboard Cite

Premise of the Study Despite long‐term research efforts, a comprehensive perspective on the ecological and functional properties determining plant weediness is still lacking. We investigated here key functional attributes of arable weeds compared to non‐weed plants, at large spatial scale. Methods We used an intensive survey of plant communities in cultivated and non‐cultivated habitats to define a pool of plants occurring in arable fields (weeds) and one of plants occurring only in open non‐arable habitats (non‐weeds) in France. We compared the two pools based on nine functional traits and three functional spaces (LHS, reproductive and resource requirement hypervolumes). Within the weed pool, we quantified the trait variation of weeds along a continuum of specialization to arable fields. Key Results Weeds were mostly therophytes and had higher specific leaf area, earlier and longer flowering, and higher affinity for nutrient‐rich, sunny and dry environments compared to non‐weeds, although functional spaces of weeds and non‐weeds largely overlapped. When fidelity to arable fields increased, the spectrum of weed ecological strategies decreased as did the overlap with non‐weeds, especially for the resource requirement hypervolume. Conclusions Arable weeds constitute a delimited pool defined by a trait syndrome providing tolerance to the ecological filters of arable fields (notably, regular soil disturbances and fertilization). The identification of such a syndrome is of great interest to predict the weedy potential of newly established alien plants. An important reservoir of plants may also become weeds after changes in agricultural practices, considering the large overlap between weeds and non‐weeds.

show abstract

Section: Methodsmentioning

confidence: 99%

What makes a weed a weed? A large‐scale evaluation of arable weeds through a functional lens

Bourgeois

Munoz

Fried

et al. 2019

American J of Botany

Self Cite

View full text Add to dashboard Cite

show abstract

“…for phenology). In such a case, in situ trait measurement appear particularly important because weeds show high intraspecific variability for phenological traits and SLA (Bagavathiannan & Norsworthy, ; Perronne et al ., ; Borgy et al ., ).…”

Section: Perspectivesmentioning

confidence: 96%

“…Under this community assembly framework, management practices and biological interactions can be considered as filters limiting or allowing the establishment, growth and persistence of distinct weed species that may disperse from a reference species pool to a specific site (Booth & Swanton, ). Extensively used during the last two decades in weed science, trait‐based approaches have provided general insights into weed community response to agricultural practices (Storkey, ; Fried et al ., ; Gardarin et al ., ; Storkey et al ., ; Gunton et al ., ; Fried et al ., ; Colbach et al ., ; Perronne et al ., ; Armengot et al ., ), to environmental properties characterising field boundaries (Cordeau et al ., ; Perronne et al ., ) and to landscape heterogeneity (Fried et al ., ; Alignier et al ., ). A deeper understanding of how weed traits shift across climatic and management intensity gradients, at both global and local scales, however requires the appropriate ‘core’ traits to be identified as well as the translation of management practices into gradients of resources and disturbances.…”

Section: Introductionmentioning

confidence: 99%

Response and effect traits of arable weeds in agro‐ecosystems: a review of current knowledge

et al. 2017

View full text Add to dashboard Cite

Integrating principles of ecological intensification into weed management strategies requires an understanding of the many relationships among weeds, crops and other organisms of agro-ecosystems in a changing context. Extensively used during the last two decades in weed science, trait-based approaches have provided general insights into weed community response to agricultural practices, and recently to understanding the effect of weeds on agro-ecosystem functioning. In this review, we provide a holistic synthesis of the current knowledge on weed response and effect functional traits. Based on the literature and recent advances in weed science, we review current knowledge on (i) weed functional groups and ecological strategies, (ii) weed functional response traits to cropping systems and (iii) weed functional effect traits affecting agro-ecosystem functioning. For each functional trait, we explicitly present the assumptions and evidence on the linkage between trait values and ecological functions, in response to either management practices, for example tillage, sowing and herbicides, or biotic interactions, for example crop-weed competition and pollination. Finally, we address and discuss major research avenues that may significantly improve the use of traits and the knowledge of functional diversity in weed science for the future, especially to design and implement more environmentally sustainable weed management strategies.

show abstract

“…This was particularly true for SLA for which different species shared similar trait distributions. Our findings of a high contribution of intraspecific variability in SLA corroborate those of previous studies (Jung et al ., ; Albert et al ., ; Perronne et al ., ). This high level of intraspecific trait variability within crop sequence types could potentially be related to weed response to crop canopy closure or to phenological differences between individuals, SLA being sensitive to these two criteria (Storkey, ).…”

Section: Discussionmentioning

confidence: 97%

“…Intraspecific variability has been shown in many weed species (e.g. Griffith & Sultan, ), especially within arable fields and for traits related to resource acquisition processes (Perronne et al ., ). Consequently, one might expect that intraspecific variability can play an important role in the power of detecting changes in local weed functional diversity in response to fluctuating resources, both due to climate, management practices and resource acquisition processes.…”

Section: Introductionmentioning

confidence: 97%

Changes in functional diversity and intraspecific trait variability of weeds in response to crop sequences and climate

et al. 2015

View full text Add to dashboard Cite

International audienceHow weed communities assemble represents one the key issues of weed science. For a decade, functional approaches have been applied to investigate the processes that govern weed community assembly. In most previous studies, trait values have been generally averaged over multiple populations and habitats. Consequently, conspecifics display similar trait values while neglecting the considerable influence of intraspecific variability to detect changes in functional diversity in response to environmental drivers. However, this influence has been shown to be critical, especially, at local scales. Here, we studied changes in weed functional diversity at the field scale in four crop sequences. We focused on intra- and interspecific variability of four key functional traits involved in response to resource acquisition processes, the latter being modified by climate, management and competition. The relative influence of intra- and interspecific variability among the crop sequence types was highlighted using a diversity partitioning approach. It provides evidence for substantial amount of intraspecific variability in the weed community and underlines its essential role in response to fine-scale environmental drivers. In addition, we investigated the response of the three most abundant species to competition with the crop, the growing season and the crop sequence type. We highlighted that these species showed a wide range of combinations of trait values, suggesting the co-existence of several successful strategies. Based on these results, we emphasise that neglecting intraspecific variability can lead to substantial underestimations of the functional weed response to management and crop-weed competition at the field scale

show abstract

The interspecific and intraspecific variation of functional traits in weeds: diversified ecological strategies within arable fields

Cited by 24 publications

References 43 publications

What makes a weed a weed? A large‐scale evaluation of arable weeds through a functional lens

What makes a weed a weed? A large‐scale evaluation of arable weeds through a functional lens

Response and effect traits of arable weeds in agro‐ecosystems: a review of current knowledge

Changes in functional diversity and intraspecific trait variability of weeds in response to crop sequences and climate

Contact Info

Product

Resources

About