Mickaël Hedde

Mickaël Hedde
French National Institute for Agriculture, Food, and Environment (INRAE) | INRAE · Department of Environment and Agronomy

PhD - HDR

About

185
Publications
78,304
Reads
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3,276
Citations
Introduction
I am studying the factors that shape soil fauna communities and their roles in soil functioning. Mainly, I test how functional trait-based approaches can help in unravelling these questions.
Additional affiliations
February 2013 - December 2015
INRA, Dept EA
Position
  • PIVERS -- Vers une meilleure compréhension de la biodisponibilité des éléments traces pour les vers de terre et de l'impact en retour de leur activité sur la disponibilité des polluants dans les sols agricoles
Description
  • Co-Leader
February 2013 - present
Pour et Sur le Plan Ecophyto
Position
  • IndRegArb -- Indicateurs biologiques d’impacts liés à la régulation naturelle des ravageurs en arboriculture fruitière
January 2012 - December 2016
INRA Versailles
Position
  • SOFIA -- Agrosystems and soil functional biodiversity
Description
  • Soil biodiversity WP leader
Education
November 2002 - November 2006
Université de Rouen
Field of study
  • Soil Ecology
September 2001 - July 2002
Ecole Nationale des Sciences Agronomiques de Rennes
Field of study
  • Soil science
September 2000 - August 2001
Université de Rouen
Field of study
  • Soil invertebrates ecology

Publications

Publications (185)
Article
Full-text available
Les sols hébergent une importante biodiversité. Ils sont essentiels pour nourrir l'humanité et jouent un rôle fondamental dans les cycles biogéochimiques de la planète. Alors qu'à l'échelle du globe, un tiers des sols sont dégradés, comprendre les processus écologiques qui s'y déroulent pour mieux les préserver et les restaurer est un enjeu majeur....
Article
Full-text available
Aim Although soil biodiversity is extremely rich and spatially variable, both in terms of species and trophic groups, we still know little about its main drivers. Here, we contrast four long‐standing hypotheses to explain the spatial variation of soil multi‐trophic diversity: energy, physiological tolerance, habitat heterogeneity and resource heter...
Article
Full-text available
Les catégories écologiques de vers de terre définies par Marcel Bouché sur les vers de terre français entre 1971 et 1977 ont eu un succès mondial et sont maintenant utilisées par tous les auteurs de tous les continents. Cependant, deux glissements de sens et d'usage peuvent être décelés dans la littérature scientifique. Le premier est que la plupar...
Preprint
Full-text available
There is growing interest in using the ecosystem services framework for environmental risk assessments of plant protection products (PPP). However, there is still a broad gap between most of the ecotoxicological endpoints used in PPP risk assessment and the evaluation of the risks and effects of PPP on ecosystem services. Here we propose a conceptu...
Article
Full-text available
Soil ecosystems, and the fauna they host, are known to provide many services and communities of Collembola can be used as bioindicators of soil functionality. Climate change is often expected to threaten Collembola, however, it is possible that it could also favour them. Previous studies have shown that the structure of collembolan communities can...
Conference Paper
Full-text available
While food webs are pivotal tools to understand the structure, dynamics and functioning of ecosystems , their reconstruction is not trivial since feeding relationships are not always known. To this end, soil ecologists often simplify the problem by either grouping morphologically similar organisms into trophic groups with known interactions or by a...
Conference Paper
Full-text available
While food webs are pivotal tools to understand the structure, dynamics and functioning of ecosystems , their reconstruction is not trivial since feeding relationships are not always known. To this end, soil ecologists often simplify the problem by either grouping morphologically similar organisms into trophic groups with known interactions or by a...
Article
Full-text available
Increasing evidence suggests that agricultural intensification is a threat to many groups of soil biota, but how the impacts of land-use intensity on soil organisms translate into changes in comprehensive soil interaction networks remains unclear. Here for the first time, we use environmental DNA to examine total soil multi-trophic diversity and fo...
Conference Paper
Despite its importance for human activities, soil biodiversity remains largely unknown. This gap of knowledge is a strong limit for studies including it such as in the agricultural field. Particularly, in France, no large-scale monitoring of soil biodiversity exist for the moment except for microorganisms (bacteria and fungi). Aware to this need, w...
Poster
Full-text available
Collembola represent a widespread class of arthropods living mostly in soil and on soil surface. Communities of Collembola have notably been used as bioindicators of several environmental factors such as pollution or land use. Recently, they have also opened perspectives in studying the effects of projected climate change on soil biodiversity. More...
Article
Full-text available
The increasing severity and frequency of natural disturbances requires a better understanding of their effects on all compartments of biodiversity. In Northern Fennoscandia, recent large-scale moth outbreaks have led to an abrupt change in plant communities from birch forests dominated by dwarf shrubs to grass-dominated systems. However, the indire...
Article
Plant diversification through crop rotation or agroforestry is a promising way to improve sustainability of agroecosystems. Nonetheless, criteria to select the most suitable plant communities for agroecosystems diversification facing contrasting environmental constraints need to be refined. Here, we compared the impacts of 24 different plant commun...
Article
Full-text available
Collembola have been proposed for several decades as a good model organisms to survey soil biodiversity; but most of the studies focused on taxonomic endpoints. The main objectives of this study are to compare the effects of the different land uses, including urban and industrial land uses, while using both collembolan functional and taxonomic biod...
Article
Soil organic matter (OM) is a complex heterogeneous mixture: resulting from decomposition and organo-mineral interactions, it challenges characterization in terms of composition and biogeochemical stability. From this perspective, the Rock-Eval® method is a rapid and efficient thermal analysis, which combines quantitative and qualitative informatio...
Conference Paper
Despite its importance for human activities, soil biodiversity remains largely unknown and threatened. Aware of the need for large-scale monitoring, we studied the feasibility to add a soil biodiversity survey (RMQS-Biodiversity) to the already existing French soil quality monitoring network (RMQS). We worked with soil biodiversity experts to coupl...
Conference Paper
Despite its importance for human activities, soil biodiversity remains largely unknown and threatened. Aware of the need for large-scale monitoring, we studied the feasibility to add a soil biodiversity survey (RMQS-Biodiversity) to the already existing French soil quality monitoring network (RMQS). We worked with soil biodiversity experts to coupl...
Article
Technosols are defined by the World Reference Base as soils subjected to a strong human influence and containing at least 20% of artefacts. The construction of Technosol using recycled waste material is considered an appealing sustainable use of both natural and anthropic resources. Constructed Technosol can attract and host a multitude of soil org...
Preprint
Full-text available
The increasing severity and frequency of natural disturbances requires a better understanding of their effects on all compartments of biodiversity. In Northern Fennoscandia, recent large-scale moth outbreaks have led to an abrupt change in plant communities from birch forests dominated by dwarf shrubs to grass-dominated systems. However, the indire...
Article
Full-text available
Nematodes have been used as bioindicators of soil quality for more than 20 years, and have been shown to have good potential for assessing the impact of heavy metal pollution on soil. They provide information about the biological condition of soil and can reveal dysfunctions linked to the presence of contaminants. In the case of contamination by mu...
Article
Comparative phylogeography is a powerful methodological approach to understand the particular evolutionary phenomena that occur in islands. This method has been rarely applied to insular earthworm communities. These soil animals show a striking dichotomy in their phylogeographic patterns: deeply divergent, regionally structured linages and widely d...
Article
Full-text available
The area comprising the Pyrenees, Northeast Spain, Southern France and Corsica-Sardinia supports a large part of the diversity of Lumbricidae earthworms, including most species of the endemic genera Prosellodrilus, Cataladrilus and Scherotheca. In this region, the probability of encountering new species for science is significant, especially in sca...
Article
Full-text available
Background Agroforestry systems have enhanced diversity of cultivated plants compared to monocultures, and are expected to affect associated biodiversity. Despite a growing body of literature on the importance of soil fauna, the known effects of different agroforestry types on soil fauna communities and functions have not yet been synthesized. Sco...
Article
In the early 70s, the soil biologist Marcel Bouché classified French earthworms species into defined ecological categories. This classification system was immensely successful and is still widely used to describe earthworm functional groups even outside of Europe. Bouché used morpho-anatomical traits to differentiate three main categories: epigeic,...
Article
Alley cropping systems present tree rows alternating with crop alleys. Tree rows are unculti-vated and often present an understory vegetation strip (UVS), whose impacts have been less studied than those of the trees. Spatial variations within UVSs and between UVSs and crop alleys were investigated for vegetation biomass and necromass, soil organic...
Article
Full-text available
Un premier inventaire de la diversité spécifique des vers de terre a été réalisé dans le Parc national de Port-Cros. Les échantillons collectés dans les secteurs du cap Lardier, Port-Cros et Porquerolles ont été identifiés en combinant diagnoses morphologiques et analyses des codes-barres ADN. Un total de 15 espèces, certaines remarquables, a été o...
Article
Full-text available
Purpose Anthropogenic activities lead to soil degradation and loss of biodiversity, but also contribute to the creation of novel ecosystems. Pedological engineering aims at constructing Technosols with wastes and by-products to reclaim derelict sites and to restore physico-chemical functions. Materials and methods The biological (dynamics of soil...
Article
Notre contexte économique, environnemental et sociétal actuel nous incite à considérer, dans le cadre de la transition agroécologique, des pratiques agricoles limitant l'usage d'intrants de synthèse et favorisant la biodiversité planifiée dans les agroécosystèmes. Ces pratiques mobilisent certains services écosystémiques réalisés par la biocénose d...
Article
Full-text available
Earthworms are important for soil functioning in arable cropping systems and earthworm species differ in their response to soil tillage and crop residue management. Lumbricus terrestris (Linnaeus, 1758) are rare in intensively tilled arable fields. In two parallel field trials with either non-inversion (NIT) or conventional tillage (CT), we investi...
Chapter
This chapter discusses a systemic understanding of soil and also explores soil fauna. Soil fauna is commonly subdivided into three broad groups according to the size of organisms: microfauna, mesofauna and macrofauna. The wildlife biodiversity is extremely high in soils and the chapter discusses the quantification methods of biodiversity. Then, the...
Article
Trophic ecology is the study of feeding interactions and food acquisition by organisms. It includes the causes and consequences of those behaviours at all levels of biological organisation. As a field of research, it crosses many disciplinary boundaries and provides knowledge that is pertinent to many other areas of ecology. Here we list and catego...
Article
Millipedes (Diplopoda) and terrestrial isopods (Isopoda) may play a significant role in soil decomposition. The present study aimed to contribute to the general understanding of feeding performances of macrodetritivores consuming grass litter by answering two questions. Q1: Are grass litter traits indicating nutritive value (i.e. chemical) and trai...
Article
Full-text available
1.Investigating the functional facet of biodiversity provides ecologists with a deeper understanding of community assembly and ecosystem processes, from local to biogeographical scales. A central assumption in functional ecology is that interspecific trait variability is higher than intraspecific variability. The ‘stable species hierarchy’ hypothes...
Presentation
Full-text available
Carbon (C), nitrogen (N) and phosphorus (P) cycles are intimately linked in ecosystems through key processes such as primary production and litter decomposition. Ecological stoichiometry has become a common approach for exploring relationships between biogeochemical cycles and ecosystems functions in ecological science (Sterner and Elser, 2002). In...
Chapter
Full-text available
The Green Revolution and the introduction of chemical fertilizers, synthetic pesticides and high yield crops had enabled to increase food production in the mid and late 20th. The benefits of this agricultural intensification have however reached their limits since yields are no longer increasing for many crops, negative externalities on the environ...
Article
Geogenic lead (Pb) is considered to be less bioavailable than anthropogenic Pb and exerts less effect on the soil fauna. However, Pb contamination in vegetables has been reported in the case of geogenic anomalies, even at moderate concentrations (around 170 mg kg-1). In this study, we investigated collembolan communities using both taxonomic-and tr...
Article
Green roofs, especially productive ones (e.g. of edible biomass), are urban ecosystems developed in response to the scarcity of arable areas in urban environments. Their installation is also perceived as a possible way to preserve biodiversity in cities. However, the effectiveness of green roofs in supporting biodiversity, especially soil biodivers...
Article
The Green Revolution and the introduction of chemical fertilizers, synthetic pesticides and high yield crops had enabled to increase food production in the mid and late 20th. The benefits of this agricultural intensification have however reached their limits since yields are no longer increasing for many crops, negative externalities on the environ...
Book
The Green Revolution and the introduction of chemical fertilizers, synthetic pesticides and high yield crops had enabled to increase food production in the mid and late 20th. The benefits of this agricultural intensification have however reached their limits since yields are no longer increasing for many crops, negative externalities on the environ...
Article
Full-text available
Ce numéro est constitué d’articles issus du colloque «De la connaissance de la biologie des sols et de ses fonctions, à son pilotage » organisé en partenariat avec l’Ademe et l’AFB, le 18 octobre 2018 à Dijon.
Article
Full-text available
Understanding the relationship between litter quality and macrodetritivore feeding performances is of prime importance. Among soil invertebrates, macrodetritivores such as millipedes (Diplopoda) and terrestrial isopods (Crustacea, Isopoda) could play a significant role in the decomposition process. Furthermore, studies relating herb litter to macro...
Book
Les sols remplissent des services écosystémiques indispensables à la vie humaine parmi lesquels celui d’approvisionnement en aliments et de régulation, par le stockage, la transformation et le transfert, de l’eau et des éléments tels que le carbone, l’azote, etc.. La matière organique est un élément déterminant du maintien de ces services de par so...
Article
A set of research studies has been performed over a period of 10 years on the silvicultural cycle of an even-aged beech forest in Normandy, France. The striking results about both soil functioning (litter decomposition, N cycling, soil C stock) and soil biota (microorganisms, mesofauna, and macrofauna) are presented with the goal of developing an e...
Article
Full-text available
The international 4 per 1000 initiative aims at supporting states and non-governmental stakeholders in their efforts towards a better management of soil carbon (C) stocks. These stocks depend on soil C inputs and outputs. They are the result of fine spatial scale interconnected mechanisms, which stabilise/destabilise organic matter-borne C. Since 2...
Article
Partitioning tissue metal concentration into subcellular compartments reflecting toxicologically available pools may provide good descriptors of the toxicological effects of metals on organisms. Here we investigated the relationships between internal compartmentalization of Cd, Pb and Zn and biomarker responses in a model soil organism: the earthwo...
Book
La faune du sol - Déterminants de la structure des communautés et impacts sur le fonctionnement du sol .
Article
Full-text available
The aim of the international "4 per 1 000" initiative is to support States and non-governmental actors in their efforts towards a better management of carbon (C) stocks in soils. These stocks depend on the inputs and outputs of C in soils. Stocks are the result of interconnected mechanisms acting at fine spatial scales, leading to stabilisation/des...
Poster
Full-text available
In a climate change context, soil ecosystem services can be threatened, notably through impacts on soil fauna. Collembola can be therefore used for bioindication of soil mesofauna functionality. Here we aim (i) to link distribution of the collembolan communities with their functional traits adaptations to climate conditions at a large scale, (ii) t...
Poster
Full-text available
Quel est la conséquence de l’arrêt de l’utilisation des herbicides sur l’abondance et la diversité des invertébrés du sol ?
Article
1.Trait-based approaches have the potential to reveal general and predictive relationships between organisms and ecosystem functioning. However the mechanisms underlying the functional structure of communities are still unclear. Within terrestrial ecosystems several studies have shown that many ecological processes are controlled by the interacting...
Article
Roadside contamination (of air, soils and organisms) by polycyclic aromatic hydrocarbons (PAHs) was examined in an arable field and a mature forest (central France). Measured contents accounted for minute fractions of the cumulative vehicular exhaust emissions. The fate of vehicular PAHs was affected by many factors, including: atmospheric load dis...