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Plant‐soil‐microbe interactions play a central role in plant nutrient acquisition and thus ecosystem functioning and nutrient availability in agroecosystems. Adjustments in root morphology, root exudation and associations with microorganisms such as arbuscular mychorrizal fungi are common for phosphorus acquisition. Yet how plant belowground functional traits interact with microbial communities for P‐acquisition remains largely unknown, limiting our understanding of phosphorus availability in agroecosystems. Interactions between belowground functional traits and rhizosheath soil microbial communities for P‐acquisition were investigated across eight herbaceous species with contrasting root traits. Root morphological and physiological traits involved in P‐acquisition were quantified simultaneously with PLFA (phospholipid fatty acid) and NLFA (neutral lipid fatty acid) microbial bioindicators. Multiple correlations were observed between root morphology, root exudates and rhizosheath fungal and bacterial communities. Root exudates and in particular release of malate and malonate were strongly linked with indicators of Gram‐negative bacteria, which were correlated with changes in rhizosheath soil P concentration and plant P content. Our results suggest that root exudation of carboxylates may play an important role in plant‐soil‐microbe interactions for P‐acquisition, underlining their likely role in shaping microbial communities. Incorporating these interactions in biogeochemical models would lead to better predicting power and understanding of P cycling and ecosystem functioning. ;
Nicolas Honvault; David Houben; Stéphane Firmin; Hacène Meglouli; Frédéric Laruelle; Joël Fontaine; Anissa Lounès‐Hadj Sahraoui; Arnaud Coutu; Hans Lambers; Michel‐Pierre Faucon. Interactions between below‐ground traits and rhizosheath fungal and bacterial communities for phosphorus acquisition. Functional Ecology 2021, 1 .
AMA StyleNicolas Honvault, David Houben, Stéphane Firmin, Hacène Meglouli, Frédéric Laruelle, Joël Fontaine, Anissa Lounès‐Hadj Sahraoui, Arnaud Coutu, Hans Lambers, Michel‐Pierre Faucon. Interactions between below‐ground traits and rhizosheath fungal and bacterial communities for phosphorus acquisition. Functional Ecology. 2021; ():1.
Chicago/Turabian StyleNicolas Honvault; David Houben; Stéphane Firmin; Hacène Meglouli; Frédéric Laruelle; Joël Fontaine; Anissa Lounès‐Hadj Sahraoui; Arnaud Coutu; Hans Lambers; Michel‐Pierre Faucon. 2021. "Interactions between below‐ground traits and rhizosheath fungal and bacterial communities for phosphorus acquisition." Functional Ecology , no. : 1.
Cobalt is economically considered as a critical metal. The globally most important Co ore deposits are found within the Katangan Copperbelt (Democratic Republic of Congo), where a great abundance of Cu- and Co-tolerant and accumulator plants have evolved. Cobalt mining activities in this region have disseminated large quantities of wastes into the environment during the last decades and become a major environmental issue. The reduction of environmental risks and Co dispersion can be explored by considering phytoremediation and/or agromining technics that select tolerant and putative hyperaccumulator plants from the regional pool of species. Accumulation of foliar Co to >300 μg g−1 is rare globally and known principally from the Copperbelt. This chapter gives an overview of the current knowledge on Co accumulation by plants, examines the potential for Co bio-ore production using Co-accumulators from the region, and proposes a plant trait-based approach that maximizes ecosystem services provided by Co agromining.
Michel-Pierre Faucon; Olivier Pourret; Bastien Lange. Element Case Studies: Cobalt. Mineral Deposits of North Africa 2020, 385 -391.
AMA StyleMichel-Pierre Faucon, Olivier Pourret, Bastien Lange. Element Case Studies: Cobalt. Mineral Deposits of North Africa. 2020; ():385-391.
Chicago/Turabian StyleMichel-Pierre Faucon; Olivier Pourret; Bastien Lange. 2020. "Element Case Studies: Cobalt." Mineral Deposits of North Africa , no. : 385-391.
Plant–soil interactions play an important role in the structure and function of plant communities and thus in the functioning of ecosystems. […]
Michel-Pierre Faucon. Plant–Soil Interactions as Drivers of the Structure and Functions of Plant Communities. Diversity 2020, 12, 452 .
AMA StyleMichel-Pierre Faucon. Plant–Soil Interactions as Drivers of the Structure and Functions of Plant Communities. Diversity. 2020; 12 (12):452.
Chicago/Turabian StyleMichel-Pierre Faucon. 2020. "Plant–Soil Interactions as Drivers of the Structure and Functions of Plant Communities." Diversity 12, no. 12: 452.
Compaction due to traffic is a major threat to soil functions and ecosystem services as it decreases both soil pore volume and continuity. The effects of roots on soil structure have previously been investigated as a solution to alleviate compaction. Roots have been identified as a major actor in soil reinforcement and aggregation through the enhancement of soil microbial activity. However, we still know little about the root’s potential to protect soil from compaction during traffic. The objective of this study was to investigate the relationships between root traits and soil physical properties directly after traffic. Twelve crop species with contrasting root traits were grown as monocultures and trafficked with a tractor pulling a trailer. Root traits, soil bulk density, water content and specific air permeability were measured after traffic. The results showed a positive correlation between the specific air permeability and root length density and a negative correlation was found between bulk density and the root carbon/nitrogen ratio. This study provides first insight into how root traits could help reduce the consequences of soil compaction on soil functions. Further studies are needed to identify the most efficient plant species for mitigation of soil compaction during traffic in the field.
Matthieu Forster; Carolina Ugarte; Mathieu Lamandé; Michel-Pierre Faucon. Relationships between Root Traits and Soil Physical Properties after Field Traffic from the Perspective of Soil Compaction Mitigation. Agronomy 2020, 10, 1697 .
AMA StyleMatthieu Forster, Carolina Ugarte, Mathieu Lamandé, Michel-Pierre Faucon. Relationships between Root Traits and Soil Physical Properties after Field Traffic from the Perspective of Soil Compaction Mitigation. Agronomy. 2020; 10 (11):1697.
Chicago/Turabian StyleMatthieu Forster; Carolina Ugarte; Mathieu Lamandé; Michel-Pierre Faucon. 2020. "Relationships between Root Traits and Soil Physical Properties after Field Traffic from the Perspective of Soil Compaction Mitigation." Agronomy 10, no. 11: 1697.
The biogeochemical silicon cycle influences global primary productivity and carbon cycling, yet changes in silicon sources and cycling during long-term development of terrestrial ecosystems remain poorly understood. Here, we show that terrestrial silicon cycling shifts from pedological to biological control during long-term ecosystem development along 2-million-year soil chronosequences in Western Australia. Silicon availability is determined by pedogenic silicon in young soils and recycling of plant-derived silicon in old soils as pedogenic pools become depleted. Unlike concentrations of major nutrients, which decline markedly in strongly weathered soils, foliar silicon concentrations increase continuously as soils age. Our findings show that the retention of silicon by plants during ecosystem retrogression sustains its terrestrial cycling, suggesting important plant benefits associated with this element in nutrient-poor environments.
F. De Tombeur; B. L. Turner; E. Laliberté; H. Lambers; G. Mahy; M.-P. Faucon; G. Zemunik; J.-T. Cornelis. Plants sustain the terrestrial silicon cycle during ecosystem retrogression. Science 2020, 369, 1245 -1248.
AMA StyleF. De Tombeur, B. L. Turner, E. Laliberté, H. Lambers, G. Mahy, M.-P. Faucon, G. Zemunik, J.-T. Cornelis. Plants sustain the terrestrial silicon cycle during ecosystem retrogression. Science. 2020; 369 (6508):1245-1248.
Chicago/Turabian StyleF. De Tombeur; B. L. Turner; E. Laliberté; H. Lambers; G. Mahy; M.-P. Faucon; G. Zemunik; J.-T. Cornelis. 2020. "Plants sustain the terrestrial silicon cycle during ecosystem retrogression." Science 369, no. 6508: 1245-1248.
Biodiversity-rich tropical ultramafic areas are currently being impacted by land clearing and particularly by mine activities. The reclamation of ultramafic degraded areas requires a knowledge of pioneer plant species. The objective of this study is to highlight the functional traits of plants that colonize ultramafic areas after disturbance by fire or mining activities. This information will allow trait-assisted selection of candidate species for reclamation. Fifteen plots were established on ultramafic soils in Sabah (Borneo, Malaysia) disturbed by recurrent fires (FIRE plots) or by soil excavation and quarrying (MINE plots). In each plot, soil samples were collected and plant cover as well as species abundances were estimated. Fifteen functional traits related to revegetation, nutrient improvement, or Ni phytomining were measured in sampled plants. Vegetation of both FIRE and MINE plots was dominated by perennials with lateral spreading capacity (mainly by rhizomes). Plant communities displayed a conservative growth strategy, which is an adaptation to low nutrient availability on ultramafic soils. Plant height was higher in FIRE than in MINE plots, whereas the number of stems per plant was higher in MINE plots. Perennial plants with lateral spreading capacity and a conservative growth strategy would be the first choice for the reclamation of ultramafic degraded areas. Additional notes for increasing nutrient cycling, managing competition, and implementing of Ni-phytomining are also provided.
Celestino Quintela-Sabarís; Michel-Pierre Faucon; Rimi Repin; John B. Sugau; Reuben Nilus; Guillaume Echevarria; Sophie Leguédois. Plant Functional Traits on Tropical Ultramafic Habitats Affected by Fire and Mining: Insights for Reclamation. Diversity 2020, 12, 248 .
AMA StyleCelestino Quintela-Sabarís, Michel-Pierre Faucon, Rimi Repin, John B. Sugau, Reuben Nilus, Guillaume Echevarria, Sophie Leguédois. Plant Functional Traits on Tropical Ultramafic Habitats Affected by Fire and Mining: Insights for Reclamation. Diversity. 2020; 12 (6):248.
Chicago/Turabian StyleCelestino Quintela-Sabarís; Michel-Pierre Faucon; Rimi Repin; John B. Sugau; Reuben Nilus; Guillaume Echevarria; Sophie Leguédois. 2020. "Plant Functional Traits on Tropical Ultramafic Habitats Affected by Fire and Mining: Insights for Reclamation." Diversity 12, no. 6: 248.
Plant P acquisition strategies are driven by multiple belowground morphological and physiological traits as well as interactions among these traits. This study aimed to characterize the relationships among traits involved in P acquisition to explore tradeoffs and the main P-acquisition strategies and their mediation by soil type. Ten morphological and physiological traits involved in P acquisition were measured across 13 species grown in controlled conditions in two contrasting soils with moderate P limitation. Tradeoffs between thicker and thinner roots were observed, with thicker roots exhibiting greater carboxylate release or phosphatase activity in the rhizosheath. Tradeoffs and coordination amongst traits were strongly mediated by soil type. Multivariate analysis of functional traits involved in P acquisition highlighted four main P-acquisition strategies relying primarily on morphological traits, physiological traits or a combination thereof. The diversity of strategies demonstrates a potential for functional diversity benefits in cultivated plant communities via preferential access to different P pools leading to complementarities and reduced competition for resource acquisition. Overall, our results underpin functionally-complementary multispecies crop designs, enhancing P availability and cycling efficiency.
Nicolas Honvault; David Houben; Cécile Nobile; Stéphane Firmin; Hans Lambers; Michel-Pierre Faucon. Tradeoffs among phosphorus-acquisition root traits of crop species for agroecological intensification. Plant and Soil 2020, 461, 137 -150.
AMA StyleNicolas Honvault, David Houben, Cécile Nobile, Stéphane Firmin, Hans Lambers, Michel-Pierre Faucon. Tradeoffs among phosphorus-acquisition root traits of crop species for agroecological intensification. Plant and Soil. 2020; 461 (1-2):137-150.
Chicago/Turabian StyleNicolas Honvault; David Houben; Cécile Nobile; Stéphane Firmin; Hans Lambers; Michel-Pierre Faucon. 2020. "Tradeoffs among phosphorus-acquisition root traits of crop species for agroecological intensification." Plant and Soil 461, no. 1-2: 137-150.
With the forecasted dramatic growth of insect rearing in the near future, frass (insect excreta) has been increasingly considered a sustainable resource for managing plant nutrition in cropping systems and a promising alternative to conventional fertilizer. However, the impact of soil fauna on its fertilizing effect has not been investigated so far. In this study, we investigated the effect of earthworms (Lumbricus terrestris L.) on nitrogen (N), phosphorus (P), potassium (K) and calcium (Ca) uptake and crop growth in the presence of frass from mealworm (Tenebrio molitor L.). Using a pot experiment, we found that earthworms increased N, P, K and Ca concentration in barley (Hordeum vulgare L.) in the presence of frass, suggesting that earthworm activity enhances the short-term recycling of nutrients from frass. Compared to treatments with and without frass and earthworms, the specific leaf area of barley was the highest in the presence of both earthworms and frass. This confirms that earthworms and frass have a synergistic effect on soil fertility. Overall, our study shows that earthworms may improve the efficiency of organic fertilizers and argues therefore for the importance of developing sustainable agricultural practices that promote earthworm populations.
Anne-Maïmiti Dulaurent; Guillaume Daoulas; Michel-Pierre Faucon; David Houben. Earthworms (Lumbricus terrestris L.) Mediate the Fertilizing Effect of Frass. Agronomy 2020, 10, 783 .
AMA StyleAnne-Maïmiti Dulaurent, Guillaume Daoulas, Michel-Pierre Faucon, David Houben. Earthworms (Lumbricus terrestris L.) Mediate the Fertilizing Effect of Frass. Agronomy. 2020; 10 (6):783.
Chicago/Turabian StyleAnne-Maïmiti Dulaurent; Guillaume Daoulas; Michel-Pierre Faucon; David Houben. 2020. "Earthworms (Lumbricus terrestris L.) Mediate the Fertilizing Effect of Frass." Agronomy 10, no. 6: 783.
Background: Functional diversity effects on ecosystem processes, like on soil erosion, are not fully understood. Runoff and soil erosion in agricultural landscapes are reduced by the hydraulic roughness (HR) of vegetation patches, which furthers sediment retention. Vegetation with important stem density, diameters, leaf areas, and density impact the HR. A functional structure composed of these negatively correlated traits involved in the increase of the HR would constitute a positive effect of the functional diversity. Methods: Runoff simulations were undertaken on four mono-specific and two multi-specific communities, using herbaceous plant species from North-West Europe, presenting six contrasting aboveground functional traits involved in the HR increase. Results: An effect of dominant traits in the community was found on the HR, identified as the community-weighted leaf density. The non-additive effect of functional diversity on the HR could be explained by the presence of species presenting large stems in the communities with high functional diversity. Conclusion: We argued that functional diversity effect on the HR could change due to idiosyncratic effects of the plant traits, which would be influenced by soil properties, phylogeny diversity, and plant species interactions. These findings constitute an advancement in the understanding of plant trait assemblage on runoff and soil erosion processes.
Léa Kervroëdan; Romain Armand; Mathieu Saunier; Michel-Pierre Faucon. Functional Diversity Effects of Vegetation on Runoff to Design Herbaceous Hedges for Sediment Retention. Diversity 2020, 12, 131 .
AMA StyleLéa Kervroëdan, Romain Armand, Mathieu Saunier, Michel-Pierre Faucon. Functional Diversity Effects of Vegetation on Runoff to Design Herbaceous Hedges for Sediment Retention. Diversity. 2020; 12 (4):131.
Chicago/Turabian StyleLéa Kervroëdan; Romain Armand; Mathieu Saunier; Michel-Pierre Faucon. 2020. "Functional Diversity Effects of Vegetation on Runoff to Design Herbaceous Hedges for Sediment Retention." Diversity 12, no. 4: 131.
Rearing insects is expected to dramatically increase during the next few years, and this will be associated with generating high quantities of frass (insect excreta). It is necessary to find solutions allowing the efficient valorization of these by-products before a major upscaling of the industry takes place. Therefore, this study aims at investigating the fertilizer potential of frass. A pot experiment was established and soil was amended either with mealworm (Tenebrio molitor L.) frass (10 Mg ha−1), with mineral fertilizer (NPK) at equivalent nutrient level to frass or with a mixture of 50% NPK and 50% frass. Changes of soil properties and growth and nutrient uptake by barley (Hordeum vulgare L.) were then analyzed. Due to its rapid mineralization and the presence of nutrient in a readily-available form, we found that frass is as efficient as mineral NPK fertilizer to improve biomass and N, P and K uptake by barley. Compared to mineral fertilizer, water soluble P concentration is five times lower in the presence of frass, which prevents P from loss and sorption onto soil constituents. More importantly, BIOLOG EcoPlate reveals that addition of frass stimulates soil microbial activity, especially when it is mixed with mineral fertilizer, suggesting a synergistic effect between both amendments. Taken together, our results indicate that frass has a great potential to be used as a partial or a complete substitute for mineral NPK fertilizer. This is especially relevant in the context of a reduced availability of mineral fertilizers while being consistent with circular economy’s principles.
David Houben; Guillaume Daoulas; Michel-Pierre Faucon; Anne-Maïmiti Dulaurent. Potential use of mealworm frass as a fertilizer: Impact on crop growth and soil properties. Scientific Reports 2020, 10, 1 -9.
AMA StyleDavid Houben, Guillaume Daoulas, Michel-Pierre Faucon, Anne-Maïmiti Dulaurent. Potential use of mealworm frass as a fertilizer: Impact on crop growth and soil properties. Scientific Reports. 2020; 10 (1):1-9.
Chicago/Turabian StyleDavid Houben; Guillaume Daoulas; Michel-Pierre Faucon; Anne-Maïmiti Dulaurent. 2020. "Potential use of mealworm frass as a fertilizer: Impact on crop growth and soil properties." Scientific Reports 10, no. 1: 1-9.
Struvite is increasingly considered a promising alternative to mined phosphorus (P) fertilizer. However, its solubility is very low under neutral to alkaline pH while it increases with acidification. Here, we investigated whether supplying ammonium to stimulate rhizosphere acidification might improve struvite solubility at the vicinity of roots and, ultimately, enhance P uptake by plants. Using a RHIZOtest design, we studied changes in soil pH, P availability and P uptake by ryegrass in the rhizosphere and bulk soil supplied with either ammonium or nitrate under three P treatments: no-P, triple super phosphate and struvite. We found that supplying ammonium decreased rhizosphere pH by more than three units, which in turn increased soluble P concentrations by three times compared with nitrate treatments. However, there was no difference between P treatments, which was attributed to the increase of soluble Al concentration in the rhizosphere, which subsequently controlled P availability by precipitating it under the form of variscite-like minerals (predicted using Visual MINTEQ). Moreover, although ammonium supply increased soluble P concentration, it did not improve P uptake by plants, likely due to the absence of P deficiency. Further studies, especially in low-P soils, are thus needed to elucidate the role of nitrogen form on P uptake in the presence of struvite. More generally, our results highlight the complexity of manipulating rhizosphere processes and stress the need to consider all the components of the soil-plant system.
Andrea Danaé Gómez-Suárez; Cécile Nobile; Michel-Pierre Faucon; Olivier Pourret; David Houben. Fertilizer Potential of Struvite as Affected by Nitrogen Form in the Rhizosphere. Sustainability 2020, 12, 2212 .
AMA StyleAndrea Danaé Gómez-Suárez, Cécile Nobile, Michel-Pierre Faucon, Olivier Pourret, David Houben. Fertilizer Potential of Struvite as Affected by Nitrogen Form in the Rhizosphere. Sustainability. 2020; 12 (6):2212.
Chicago/Turabian StyleAndrea Danaé Gómez-Suárez; Cécile Nobile; Michel-Pierre Faucon; Olivier Pourret; David Houben. 2020. "Fertilizer Potential of Struvite as Affected by Nitrogen Form in the Rhizosphere." Sustainability 12, no. 6: 2212.
Repeated application of organic fertiliser has unintentionally let to the introduction into surface water and soils of many phytotoxic substances that compromise agricultural production and threaten environmental quality. Recent studies using hydroponic systems have reported that bisphenol A (BPA) affects essential mineral elements contents and root absorptive function, thereby impacting nutrient content in plant. However, in soils, plants develop specific traits related to nutrient acquisition strategies. In order to ensure optimised supply of nutrients, understanding the response of these traits under BPA stress is thus essential. Here, we therefore, investigated how leaf nutrient contents (P, Ca and K), root morphology, P-mobilising exudates and rhizospheric microbiota biomass respond to BPA soil contamination using wheat (Triticum aestivum) as plant model. After 7 weeks, root and leaf traits were not markedly affected by the exposure to BPA at low and high concentrations (0.1 and 1000 mg kg−1 soil). Significant change on average root diameter and aerial biomass were only observed at the highest dose. BPA contamination had no influence on nutrients acquisition traits and root-associated microbiota. Specific root length, carboxylates exudation and P, Ca and K concentrations in leafs were similar irrespective of the treatments. In addition, total microbial biomass, bacteria and fungi abundance measured through phospholipid fatty acid analysis did not differ among controls and contaminated soils. In summary, this experiment suggests a limited influence of BPA contaminated soils on traits involved in nutrient acquisition in wheat.
A. Yacoumas; N. Honvault; D. Houben; J. Fontaine; H. Meglouli; F. Laruelle; B. Tisserant; Michel-Pierre Faucon; Anissa Lounès-Hadj Sahraoui; S. Firmin. Contrasting Response of Nutrient Acquisition Traits in Wheat Grown on Bisphenol A-Contaminated Soils. Water, Air, & Soil Pollution 2020, 231, 1 -13.
AMA StyleA. Yacoumas, N. Honvault, D. Houben, J. Fontaine, H. Meglouli, F. Laruelle, B. Tisserant, Michel-Pierre Faucon, Anissa Lounès-Hadj Sahraoui, S. Firmin. Contrasting Response of Nutrient Acquisition Traits in Wheat Grown on Bisphenol A-Contaminated Soils. Water, Air, & Soil Pollution. 2020; 231 (1):1-13.
Chicago/Turabian StyleA. Yacoumas; N. Honvault; D. Houben; J. Fontaine; H. Meglouli; F. Laruelle; B. Tisserant; Michel-Pierre Faucon; Anissa Lounès-Hadj Sahraoui; S. Firmin. 2020. "Contrasting Response of Nutrient Acquisition Traits in Wheat Grown on Bisphenol A-Contaminated Soils." Water, Air, & Soil Pollution 231, no. 1: 1-13.
Ecological niche modelling helps us to understand the spatial assembly of species in heterogeneous environments. Three patterns have been widely reported in the research literature regarding the relationship between realised niches and macronutrient concentration gradients: (1) species’ optima are unevenly distributed, with a higher frequency in mesic conditions; (2) species’ response curves are narrower when optima density is higher; and (3) species with optima at the extremes of the gradients have skewed response curves with a longer tail toward mesic conditions. This study aims to test the existence of these patterns on a vegetation model occurring in metalliferous soils comprising copper and cobalt along a toxicity gradient in south-eastern D.R. Congo. Realised niches of 80 taxa were modelled using generalised additive models. The niche optima and the niche widths were determined for each taxon. Results highlighted three groups which differ according to the niche optima location along the soil metal concentration gradients. The patterns found along macronutrient concentration gradients were, to some extent, transposable along micronutrient concentration gradients. Our findings on the diversity and assembly of realised niches has consequences for plant conservation strategies.
Sylvain Boisson; Arnaud Monty; Maxime Séleck; Mylor Ngoy Shutcha; Michel-Pierre Faucon; Grégory Mahy. Ecological niche distribution along soil toxicity gradients: Bridging theoretical expectations and metallophyte conservation. Ecological Modelling 2019, 415, 108861 .
AMA StyleSylvain Boisson, Arnaud Monty, Maxime Séleck, Mylor Ngoy Shutcha, Michel-Pierre Faucon, Grégory Mahy. Ecological niche distribution along soil toxicity gradients: Bridging theoretical expectations and metallophyte conservation. Ecological Modelling. 2019; 415 ():108861.
Chicago/Turabian StyleSylvain Boisson; Arnaud Monty; Maxime Séleck; Mylor Ngoy Shutcha; Michel-Pierre Faucon; Grégory Mahy. 2019. "Ecological niche distribution along soil toxicity gradients: Bridging theoretical expectations and metallophyte conservation." Ecological Modelling 415, no. : 108861.
Crops have different strategies to acquire poorly-available soil phosphorus (P) which are dependent on their architectural, morphological, and physiological root traits, but their capacity to enhance P acquisition varies with the type of fertilizer applied. The objective of this study was to examine how P-acquisition strategies of three main crops are affected by the application of sewage sludges, compared with a mineral P fertilizer. We carried out a 3-months greenhouse pot experiment and compared the response of P-acquisition traits among wheat, barley and canola in a soil amended with three sludges or a mineral P fertilizer. Results showed that the P-acquisition strategy differed among crops. Compared with canola, wheat and barley had a higher specific root length and a greater root carboxylate release and they acquired as much P from sludge as from mineral P. By contrast, canola shoot P content was greater with sludge than with mineral P. This was attributed to a higher root-released acid phosphatase activity which promoted the mineralization of sludge-derived P-organic. This study showed that contrasted P-acquisition strategies of crops allows increased use of renewable P resources by optimizing combinations of crop and the type of P fertilizer applied within the cropping system.
C. Nobile; D. Houben; E. Michel; S. Firmin; Hans Lambers; E. Kandeler; Michel-Pierre Faucon. Phosphorus-acquisition strategies of canola, wheat and barley in soil amended with sewage sludges. Scientific Reports 2019, 9, 1 -11.
AMA StyleC. Nobile, D. Houben, E. Michel, S. Firmin, Hans Lambers, E. Kandeler, Michel-Pierre Faucon. Phosphorus-acquisition strategies of canola, wheat and barley in soil amended with sewage sludges. Scientific Reports. 2019; 9 (1):1-11.
Chicago/Turabian StyleC. Nobile; D. Houben; E. Michel; S. Firmin; Hans Lambers; E. Kandeler; Michel-Pierre Faucon. 2019. "Phosphorus-acquisition strategies of canola, wheat and barley in soil amended with sewage sludges." Scientific Reports 9, no. 1: 1-11.
Plant species diversity impacts ecosystem processes, but its effects on runoff and soil erosion are not fully understood. Herbaceous vegetation control concentrated runoff and soil erosion through the increase of hydraulic roughness which leads to sediment retention. This study aims to investigate the effect of aboveground traits and their divergence (i.e., stem diameter and density, and leaf area and density) on hydraulic roughness and sediment retention in plant communities. Runoff experimentations were performed, using a sediment input, on three mono-specific and one multi-specific conditions composed of plant species with contrasting traits furthering hydraulic roughness and sediment retention. No effect of trait diversity was found on the hydraulic roughness and sediment retention; which would be explained by the absence of an optimal space use by the traits involved in the increase of the hydraulic roughness. The dominant effect of the community-weighted traits in the plant community drives the effects of the vegetation on the hydraulic roughness and sediment retention. This absence of positive effects of the trait diversity on hydraulic roughness and sediment retention constitutes an important knowledge to model runoff and soil erosion processes and to design herbaceous infrastructures for soil erosion control.
Léa Kervroëdan; Romain Armand; Mathieu Saunier; Michel-Pierre Faucon. Effects of plant traits and their divergence on runoff and sediment retention in herbaceous vegetation. Plant and Soil 2019, 441, 511 -524.
AMA StyleLéa Kervroëdan, Romain Armand, Mathieu Saunier, Michel-Pierre Faucon. Effects of plant traits and their divergence on runoff and sediment retention in herbaceous vegetation. Plant and Soil. 2019; 441 (1-2):511-524.
Chicago/Turabian StyleLéa Kervroëdan; Romain Armand; Mathieu Saunier; Michel-Pierre Faucon. 2019. "Effects of plant traits and their divergence on runoff and sediment retention in herbaceous vegetation." Plant and Soil 441, no. 1-2: 511-524.
Pioneer plants may improve the ecological restoration of degraded ultramafic areas by plant-soil interaction processes. In this study, we assess the effect of the pioneer actinorhizal tree C. terminale (Casuarinaceae) on the recovery of plant communities and soil functions on degraded tropical ultramafic sites. Soil and plant samples were collected along a tree-age gradient in two degraded ultramafic sites in Sabah (Northern Borneo, Malaysia): a Technosol and a Leptosol. Chemical composition of plants and soils, and biological activity of soils were assessed at both sites. Plant colonisation was assessed by plot vegetation surveys. An improvement in soil fertility parameters (pH reduction from 8.5 to 6.8, an increase in the concentrations of several nutrients and enhanced soil enzyme activities) was observed along the C. terminale age gradient. However, plant cover and diversity was only improved around mature trees at the site that was not impacted by mining. C. terminale promotes the recovery of several soil functions, mainly related to the storage and recycling of N, P, K, S. Besides plant-soil feedback, other environmental factors (i.e. exposition to sunlight, drought) may play an important role on revegetation of ultramafic soils.
Celestino Quintela-Sabarís; Etienne Auber; Sukaibin Sumail; Jean-François Masfaraud; Michel-Pierre Faucon; Françoise Watteau; Ramez F. Saad; Antony van der Ent; Rimi Repin; John Sugau; Reuben Nilus; Guillaume Echevarria; Sophie Leguedois. Recovery of ultramafic soil functions and plant communities along an age-gradient of the actinorhizal tree Ceuthostoma terminale (Casuarinaceae) in Sabah (Malaysia). Plant and Soil 2019, 440, 201 -218.
AMA StyleCelestino Quintela-Sabarís, Etienne Auber, Sukaibin Sumail, Jean-François Masfaraud, Michel-Pierre Faucon, Françoise Watteau, Ramez F. Saad, Antony van der Ent, Rimi Repin, John Sugau, Reuben Nilus, Guillaume Echevarria, Sophie Leguedois. Recovery of ultramafic soil functions and plant communities along an age-gradient of the actinorhizal tree Ceuthostoma terminale (Casuarinaceae) in Sabah (Malaysia). Plant and Soil. 2019; 440 (1-2):201-218.
Chicago/Turabian StyleCelestino Quintela-Sabarís; Etienne Auber; Sukaibin Sumail; Jean-François Masfaraud; Michel-Pierre Faucon; Françoise Watteau; Ramez F. Saad; Antony van der Ent; Rimi Repin; John Sugau; Reuben Nilus; Guillaume Echevarria; Sophie Leguedois. 2019. "Recovery of ultramafic soil functions and plant communities along an age-gradient of the actinorhizal tree Ceuthostoma terminale (Casuarinaceae) in Sabah (Malaysia)." Plant and Soil 440, no. 1-2: 201-218.
Sewage sludge is a phosphorus (P) source alternative to P fertiliser derived from rock phosphate, but its impact on soil processes driving P cycling in agroecosystems requires further study. In order to optimise the use of sludge for sustainable P fertilisation, we need to elucidate the drivers of P dynamics. The present study aims at determining how different sludges (heated sludge, HS and composted sludge, CS) affect soil P pools and dynamics. A field experiment was established and soil was amended either with sludge or with inorganic P (triple superphosphate, TSP). Soil samples were collected five times during a vegetation period, and analysed for Hedley P fractions, microbial P and phosphatase activity. Phosphorus dynamics in soil was strongly influenced by P concentrations in sludge. About one year after application, sludge with the highest P concentration (HS) was as effective as TSP to improve soil P availability. The P source of TSP was immediately available for plant uptake, but the high phosphatase activity of the HS treatment evidenced that soil microorganisms released phosphatases which can hydrolyse HS-derived organic P compounds. In addition, the high content of microbial P in the HS treatment suggests that soil microorganisms assimilate P into their own biomass. By contrast, sludge with the lowest P concentration (CS) enriched primarily the weakly-soluble soil P fractions, resulting in lower P availability compared with that in the TSP treatment. Our findings suggest that both high P concentration and slow, but continuous microbial breakdown of organic P substrates derived from HS allow using this resource as an important source for plant mineral nutrition. This study stresses the need to both characterise P concentrations and P forms in sludge, prior to their application in the field.
David Houben; Etienne Michel; Cécile Nobile; Hans Lambers; Ellen Kandeler; Michel-Pierre Faucon. Response of phosphorus dynamics to sewage sludge application in an agroecosystem in northern France. Applied Soil Ecology 2019, 137, 178 -186.
AMA StyleDavid Houben, Etienne Michel, Cécile Nobile, Hans Lambers, Ellen Kandeler, Michel-Pierre Faucon. Response of phosphorus dynamics to sewage sludge application in an agroecosystem in northern France. Applied Soil Ecology. 2019; 137 ():178-186.
Chicago/Turabian StyleDavid Houben; Etienne Michel; Cécile Nobile; Hans Lambers; Ellen Kandeler; Michel-Pierre Faucon. 2019. "Response of phosphorus dynamics to sewage sludge application in an agroecosystem in northern France." Applied Soil Ecology 137, no. : 178-186.
Guillaume Delhaye; Bastien Lange; Michel-Pierre Faucon; Céline Grandjean; Gregory Mahy; Pierre Meerts. Functional traits of a broad-niched metallophyte along a toxicity gradient: disentangling intra and inter-population variation. Environmental and Experimental Botany 2018, 156, 240 -247.
AMA StyleGuillaume Delhaye, Bastien Lange, Michel-Pierre Faucon, Céline Grandjean, Gregory Mahy, Pierre Meerts. Functional traits of a broad-niched metallophyte along a toxicity gradient: disentangling intra and inter-population variation. Environmental and Experimental Botany. 2018; 156 ():240-247.
Chicago/Turabian StyleGuillaume Delhaye; Bastien Lange; Michel-Pierre Faucon; Céline Grandjean; Gregory Mahy; Pierre Meerts. 2018. "Functional traits of a broad-niched metallophyte along a toxicity gradient: disentangling intra and inter-population variation." Environmental and Experimental Botany 156, no. : 240-247.
Bastien Lange; Guillaume Delhaye; Sylvain Boisson; Nathalie Verbruggen; Pierre Meerts; Michel-Pierre Faucon. Variation in copper and cobalt tolerance and accumulation among six populations of the facultative metallophyte Anisopappus chinensis (Asteraceae). Environmental and Experimental Botany 2018, 153, 1 -9.
AMA StyleBastien Lange, Guillaume Delhaye, Sylvain Boisson, Nathalie Verbruggen, Pierre Meerts, Michel-Pierre Faucon. Variation in copper and cobalt tolerance and accumulation among six populations of the facultative metallophyte Anisopappus chinensis (Asteraceae). Environmental and Experimental Botany. 2018; 153 ():1-9.
Chicago/Turabian StyleBastien Lange; Guillaume Delhaye; Sylvain Boisson; Nathalie Verbruggen; Pierre Meerts; Michel-Pierre Faucon. 2018. "Variation in copper and cobalt tolerance and accumulation among six populations of the facultative metallophyte Anisopappus chinensis (Asteraceae)." Environmental and Experimental Botany 153, no. : 1-9.
Vegetation controls concentrated runoff and erosion in the European loess belt by increasing hydraulic roughness and sediment retention. Studies of plant effects on runoff velocity are usually based on a taxonomical characterisation and do not consider the effects of aboveground plant functional traits in attempts to understand soil erosion by water. This trait-based plant study investigates aboveground plant functional trait effects of herbaceous hedges on the hydraulic roughness to understand soil erosion. Eight aboveground morphological traits were measured on fourteen indigenous and perennial plant species (caespitose or comprising dry biomass in winter) from north-west Europe with a high morphological variability. For each trait, density-weighted traits were calculated. The effects of traits and density-weighted traits were examined using a runoff simulator with four discharges. The leaf density and area, as well as density-weighted stem and leaf areas, stem diameter and specific leaf area were positively correlated with the hydraulic roughness. Generalised linear models defined the best combinations of traits and density-weighted traits: (1) leaf density and leaf area, (2) density-weighted leaf area and density-weighted projected stem area, and (3) density-weighted leaf area and density-weighted stem diameter. Moreover, the effects of leaf density, leaf area and density-weighted specific leaf area, varied depending on the discharge. This study is one of the first characterisation of aboveground trait effects on hydraulic roughness and highlights that vegetation with large stem density, diameter and leaf area plays a significant role in minimising soil erosion. The selection of plant species can derive from these plant trait effects to design reconstructed herbaceous hedges to minimise soil erosion.
Léa Kervroëdan; Romain Armand; Mathieu Saunier; Jean-François Ouvry; Michel-Pierre Faucon. Plant functional trait effects on runoff to design herbaceous hedges for soil erosion control. Ecological Engineering 2018, 118, 143 -151.
AMA StyleLéa Kervroëdan, Romain Armand, Mathieu Saunier, Jean-François Ouvry, Michel-Pierre Faucon. Plant functional trait effects on runoff to design herbaceous hedges for soil erosion control. Ecological Engineering. 2018; 118 ():143-151.
Chicago/Turabian StyleLéa Kervroëdan; Romain Armand; Mathieu Saunier; Jean-François Ouvry; Michel-Pierre Faucon. 2018. "Plant functional trait effects on runoff to design herbaceous hedges for soil erosion control." Ecological Engineering 118, no. : 143-151.