Bertrand Schatz

Bertrand Schatz
Centre d'Ecologie Fonctionnelle et Evolutive | CEFE · Interactions, Ecology and Society

About

207
Publications
69,054
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
3,094
Citations
Introduction
I am interested in pollination ecology, in the evolution of plant-insect interactions and in the conservation of these communities. My studies concern tropical figs and Mediterranean orchids and they are focused on the fundamental understanding of these interactions and using fundamental insights for operational conservation. bertrand.schatz@cefe.cnrs.fr
Additional affiliations
September 2001 - present
Université de Montpellier
Position
  • Directeur de recherche CNRS
September 1999 - January 2017
Centre d'Ecologie Fonctionnelle et Evolutive
Position
  • Senior Researcher

Publications

Publications (207)
Article
For pollinators such as bees, nectar mainly provides carbohydrates and pollen provides proteins, amino acids, and lipids to cover their nutritional needs. Here, to examine differences in pollinator resources, we compared the amino acid profiles and total amino acid contents of pollen from 32 common entomophilous plants in seven families. Our result...
Article
Full-text available
Long-term responses in the phenology of Mediterranean macrofungi to climatic changes are poorly documented. Here, we address this issue by comparing the fruiting patterns of 159 fungal species in Southern France between the first half of the 19th century and the first decade of the 21st century. We used a trait-based approach to assess the influenc...
Article
Full-text available
Characterising phenotypic differentiation is crucial to understand which traits are involved in population divergence and establish the evolutionary scenario underlying the speciation process. Species harbouring a disjunct spatial distribution or cryptic taxa suggest that scientists often fail to detect subtle phenotypic differentiation at first si...
Article
Full-text available
One of the central issues in conservation today is identifying areas rich in biodiversity for priority conservation. On a global scale, the Mediterranean area is a biodiversity hotspot and, locally, Corsica contains high biodiversity with interesting sites for conservation. An inventory of flora was undertaken on the Solenzara military airbase. Fiv...
Article
Mitigation translocations are increasingly used worldwide in response to land planning pressures. The quality of translocation protocols and their adjustment to the ecological traits of the translocated populations are crucial to optimise translocation success. We studied the quality of translocation protocols presented in derogation requests, a ma...
Article
Floral scents are considered major attractants for pollinator species and scent composition is likely to be under pollinator‐mediated selection. Relatively few studies have investigated geographical variation in floral scents in plant species with generalist pollination, and little is known about the mechanism behind this variation, often interpret...
Article
Full-text available
These data are coming from the derogation requests for the destruction of protected species in the context of construction or development work in France. These derogation requests include, among other things, the contents of an environmental impact assessment and the costs of the measures suggested to reduce the impact on the environment. In the ar...
Chapter
Full-text available
Résumé pour décideurs du chapitre 2 • Seule région de France métropolitaine sur quatre domaines bioclimatiques, l’Occitanie présente une biodiversité riche en faune, flore et fonge, avec une responsabilité régionale forte pour sa conservation dont la lutte contre le changement climatique et ses effets. Cette biodiversité représente souvent plus de...
Article
The decline of pollinators has been demonstrated scientifically and this phenomenon is widely recognized by both the general public and by stakeholders. Since pollinators face different threats that are all linked to human activities, there is a unique and unprecedented responsibility for people to conserve pollinators, requiring political action t...
Article
Full-text available
Studying reproductive strategies of plants is an important topic of research in evolutionary ecology, bringing essential knowledge on their adaptation and diversification, as well as on the ecosystem functioning, with potential applications in biodiversity conservation and crop breeding. Pollination, which allows the transfer of pollen from the ant...
Article
Full-text available
Premise: The genetic structure of hybrid zones provides insight into the potential for gene flow to occur between plant taxa. Four closely related European orchid species (Orchis anthropophora, O. militaris, O. purpurea, and O. simia) hybridize when they co-occur. We aimed to characterize patterns of hybridization in O. militaris-O. purpurea, O. p...
Article
Full-text available
Global changes induce a general decline in the abundance and diversity of European orchids and their pollinators. Such a decline is especially likely to affect species engaged in specialized interactions, thereby causing their replacement by generalists. In this study, we focused on sexually deceptive orchids from the genus Ophrys, which are often...
Chapter
Full-text available
Orchids of the genus Ophrys have experienced recent explosive evolutionary radiation. In order to propose a coherent definition of the notion of species for the Ophrys, it is therefore essential to consider the species in the context of the process of speciation. Since the genus Ophrys has undergone significant, rapid and recent diversification, th...
Chapter
Full-text available
Le vivant a d’innombrables facettes qui sont prises en compte par le concept de diversité biologique (biodiversité). Ne s’attacher qu’aux mécanismes ou processus généraux qui seraient communs à un grand nombre d’espèces véhicule une pensée réductionniste qui ne permet pas de répondre aux questions d’évolution, d’adaptation et de changement environn...
Chapter
Full-text available
Despite covering only 0.82% of the ocean’s surface, the Mediterranean Sea supports up to 18% of all known marine species, with 21% being listed as vulnerable and 11% as endangered. The acceler- ated spread of tropical non-indigenous species is leading to the “tropicalization” of Mediterranean fauna and flora as a result of warming and extreme heat...
Chapter
Full-text available
Marine ecosystems: Despite covering only 0.82% of the ocean’s surface, the Mediterranean Sea supports up to 18% of all known marine species, with 21% being listed as vulnerable and 11% as endangered. The accelerated spread of tropical non-indigenous species is leading to the “tropicalization” of Mediterranean fauna and flora as a result of warming...
Article
Adaptive radiations occur mostly in response to environmental variation through the evolution of key innovations that allow emerging species to occupy new ecological niches. Such biological innovations may play a major role in niche divergence when emerging species are engaged in reciprocal ecological interactions. To demonstrate coevolution is a d...
Book
Full-text available
Le réchauffement global, ses origines anthropiques et ses impacts ne peuvent plus être remis aujourd’hui en question. Depuis le début de l’ère préindustrielle, la température de la planète a augmenté de plus d’un degré Celsius. Un degré peut sembler dérisoire, mais, à l’échelle de la planète, c’est considérable. La vitesse et l’ampleur de l’évoluti...
Article
Intraspecific variation of floral signals, and particularly floral scent, is widespread in orchid species. Pollinator-mediated selection is often hypothesized to govern such polymorphism. For example, circadian rhythms of floral emissions have been associated to the daily activity patterns of pollinators in several plant species. However, most of t...
Article
Full-text available
Current divergent selection may promote floral trait differentiation among conspecific populations in flowering plants. However, whether this applies to complex traits such as colour or scents has been little studied, even though these traits often vary within species. In this study, we compared floral colour and odour as well as selective pressure...
Article
Full-text available
Most plant-pollinator networks are based on observations of contact between an insect and a flower in the field. Despite significant sampling efforts, some links are easier to report, while others remain unobserved. Therefore, visit-based networks represent a subsample of possible interactions in which the ignored part is variable. Pollen is a natu...
Article
Full-text available
• Sexually deceptive orchid species from the Mediterranean genus Ophrys usually interact with one or a few pollinator species by means of specific floral scents. In this study, we investigated the respective role of pollinator‐mediated selection and phylogenetic constraints in the evolution of floral scents in the section Pseudophrys. • We built a...
Article
Full-text available
For plant‐pollinator interactions to occur, the flowering of plants and the flying period of pollinators (i.e. their phenologies) have to overlap. Yet, few models make use of this principle to predict interactions and fewer still are able to compare interaction networks of different sizes. Here, we tackled both challenges using Bayesian structural...
Chapter
Full-text available
La forte présence des abeilles sur la scène publique comme symbole de la crise de la biodiversité, corrélée à la notoriété des bienfaits des produits de la ruche, attirent ces dernières années les regards des chercheurs en sciences sociales. L' ouvrage proposé ici présente ce champ de recherches en pleine émergence, avec pour ligne de mire les ques...
Article
For plant-pollinator interactions to occur, the flowering of plants and the flying period of pollinators (i.e. their phenologies) have to overlap. Yet, few models make use of this principle to predict interactions and fewer still are able to compare interaction networks of different sizes. Here, we tackled both challenges using Bayesian Structural...
Article
Full-text available
Classical biomonitoring techniques have focused primarily on measures linked to various biodiversity metrics and indicator species. Next-generation biomonitoring (NGB) describes a suite of tools and approaches that allow the examination of a broader spectrum of organizational levels—from genes to entire ecosystems. Here, we frame 10 key questions t...
Preprint
Full-text available
Adaptive radiations occur mostly in response to environmental variation through the evolution of key eco-morphological innovations that allow emerging species to occupy new ecological niches. However, rapid phenotypic evolution and the evolution of key novelties are likely to also occur when a couple or few species are engaged into narrow ecologica...
Article
Full-text available
Many flowering plant species are characterized by a large variation in floral traits at the population or individual levels. Among these traits, colors and odors are particularly important for pollinator attraction, yet they appear to be highly variable among conspecifics. Orchids are famous for their great taxonomic and floral diversity, as well a...
Article
Full-text available
Aim Biodiversity is known to be unevenly distributed along latitudinal gradients. While this pattern has been observed for many different organisms, it is unclear whether the distributions of ecologically important belowground mutualists, such as orchid mycorrhizal fungi (OMF), also vary according to latitude. Location Europe. Taxon Spiranthes sp...
Preprint
Full-text available
For plant-pollinator interactions to occur, the flowering of plants and the flying period of pollinators (i.e. their phenologies) have to overlap. Yet, few models make use of this principle to predict interactions and fewer still are able to compare interaction networks of different sizes. Here, we tackled both challenges using Bayesian Structural...
Article
Facing the threat of global change, there is an urgent need to document our current knowledge about the interactions between plants and their pollinators, especially for species with specialized pollination strategies. We review orchid-pollinator networks in the Euro-Mediterranean region by providing an overview and a critical analysis of our curre...
Chapter
Full-text available
Broad-leaved, mixed and coniferous forests constitute most of the potential natural vegetation in about 80% of Europe (Bohn et al., 2000) and Central Asia. Other patchily distributed forest types include water-influenced forests like black alder carrs and ravine forests on steep slopes. The vast area of boreal forest includes much of Fennoscandia,...
Chapter
Full-text available
Visconti, P., Elias, V., Sousa Pinto, I., Fischer, M., Ali-Zade, V., Báldi, A., Brucet, S., Bukvareva, E., Byrne, K., Caplat, P., Feest, A., Guerra, C., Gozlan, R., Jelić, D., Kikvidze, Z., Lavrillier, A., Le Roux, X., Lipka, O., Petrík, P., Schatz, B., Smelansky, I. and Viard, F. (2018): Chapter 3: Status, trends and future dynamics of biodiversit...
Chapter
Full-text available
Based on a comprehensive literature review, this section summarizes past and current trends in vascular plant diversity in Europe and Central Asia and attributes these trends to direct drivers of change. The full assessment report on Biodiversity and Ecosystem Services for Europe and Central Asia can be downloaded from the IPBES website: https://ww...
Poster
Le bois de construction des ruches est un sujet peu abordé dans le monde apicole en général. Ce projet a pour but d’étudier dans quelles mesures le matériau bois constitue potentiellement une source importante d’amélioration de l’état sanitaire et donc de la survie des colonies aujourd’hui en déclin. Ce projet interdisciplinaire adopte les outils d...
Article
Full-text available
In the Mediterranean, long-term land-use changes have resulted into landscape mosaics composed of very few ancient woodland remnants scattered across extended post-agricultural woodlands. Patches of ancient woodlands are now suffering rapid urban growth that reduces their area and impact their associated biodiversity. Here we use the case study of...
Article
Full-text available
The assessment of the environmental impacts of a project involves the acquisition of information on the presence or absence of protected or threatened species on the concerned site. Many factors will influence their probability of being detected and could potentially bias the representativeness of the results. Despite the important consequences tha...
Article
Full-text available
1. In the context of ongoing global changes, it is crucial to characterize and understand the variation of species distributions. For insects, despite increasing emphasis on conservation issues, evidence of range changes over large spatial and temporal scales remains scarce. 2. We aimed to examine distribution changes of butterflies and dragonflies...
Article
1.Pollination niches are important components of ecological niches and have played a major role in the diversification of Angiosperms. In this study, we focused on Euro‐Mediterranean orchids, which use diverse pollination strategies and interact with various functional groups of insects. In these orchids, we investigated the determinants of pollina...
Article
et en dehors de la réserve naturelle proche, il s'agit sûrement là de l'espèce d'orchidée en protection régionale pour laquelle l'État français a le moins de contrôle et de possibilité d'inter-vention. Ainsi, un projet de restauration éco-logique sur cette île serait très pertinent pour la conservation de cette orchidée rare et celle de ses populat...
Article
Full-text available
The Rovaltain Scientific Foundation, based in southern France since 2013, aims to produce and disseminate innovative scientific knowledge on toxic impacts on human health and ecosystems. In this context, the protection of bees and other pollinating insects is a major issue for the Foundation, which proposes science-based solutions and disseminates...
Article
Chemical mediation is often involved in interactions between plants and animals, as in pollination and in seed dispersion mutualisms. Extensive investigation has been done in floral scents and on their interspecific and intraspecific variations, but similar research on fruit scent remains poorly explored and only focused on interspecific variations...
Preprint
Volatile organic compounds (VOCs) emitted by flowers play an essential role in mediating the attraction of pollinators. However, they also attract other species exploiting resources associated with flowers. For instance, VOCs emitted by figs play a major role in encounters between Ficus spp., their mutualistic pollinating wasps, and all the members...
Article
Full-text available
Background and Aims Among the various floral traits involved in pollinator attraction and potentially under selection mediated by pollinators, floral scent/fragrance has been less investigated than other components of floral phenotype. Whether or not pollinator-mediated selection impacts floral scents depends on the heritability of scent/fragrance...
Chapter
Full-text available
Flowers are a remarkable component of every-day life. Their diversity of shape, colour and fragrance witnesses the importance of the joint evolutionary processes resulting from the interactions between plants and their insect pollinators. Indeed, pollination mutualisms with insects are key factors that have allowed the evolutionary success and dive...
Book
Full-text available
Phytophagous insects have developed mechanisms of various complexity levels to utilize plants in spite of the barriers that plants have built to resist aggressions. Plant exploitation, the simplest level, is the use of plant defence chemicals for the benefit of insects. It is illustrated by the use of plant toxins for defence against predators. The...
Chapter
Phytophagous insects have developed mechanisms of various complexity levels to utilize plants in spite of the barriers that plants have built to resist aggressions. Plant exploitation, the simplest level, is the use of plant defence chemicals for the benefit of insects. It is illustrated by the use of plant toxins for defence against predators. The...