A5015652824- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Botany and Plant Ecology Studies
- African Botany and Ecology Studies
- Wildlife Ecology and Conservation
- Biological Control of Invasive Species
- Plant Taxonomy and Phylogenetics
- Primate Behavior and Ecology
- Plant Toxicity and Pharmacological Properties
- Mediterranean and Iberian flora and fauna
- Lichen and fungal ecology
- Allelopathy and phytotoxic interactions
- Plant Parasitism and Resistance
- Chromosomal and Genetic Variations
- Viral Infections and Vectors
- Botanical Research and Chemistry
- Animal Ecology and Behavior Studies
- Genetic diversity and population structure
- Mosquito-borne diseases and control
- Zoonotic diseases and public health
- Forest Insect Ecology and Management
- Plant Virus Research Studies
- Weed Control and Herbicide Applications
- Agricultural Innovations and Practices
- Plant and Fungal Species Descriptions
Biogéosciences
2015-2024
Université de Bourgogne
2014-2024
Centre National de la Recherche Scientifique
2014-2023
Université Bourgogne Franche-Comté
2019-2023
Centre d'Écologie Fonctionnelle et Évolutive
1995-2022
Université de Montpellier
2022
Institut de Recherche pour le Développement
2022
Université Paris Sciences et Lettres
2022
École Pratique des Hautes Études
2017-2022
Institut Agro Dijon
2005-2022
summary The production of 2n gametes in plants, i.e. with a somatic chromosome number, is considered to be the dominant process involved origin polyploid plants. In this review, we provide synthesis current knowledge concerning gametes. Firstly, describe different methods used detect and quantify which include morphological flow cytometry screening occurrence pollen, analysis crosses among diploid tetraploid parents instigation micro‐and mega‐sporogenesis. Secondly, high level inter‐...
Abstract Aim The problems in public health and field management France caused by Ambrosia artemisiifolia L. require a better knowledge of the introduction naturalization this species both past present. Location France. Methods pattern spread A. was investigated through study herbarium specimens. More than 1200 specimens were found 58 herbaria virtual bordering countries. analysed mapping localities for each 30‐year period since 1863. Specific indications as ‘new plant’ used to determine...
Megaherbivores have pervasive ecological effects. In African rainforests, elephants can increase aboveground carbon, though the mechanisms are unclear. Here, we combine a large unpublished dataset of forest elephant feeding with published browsing preferences totaling nearly 200,000 records covering >800 plant species and nutritional data for 145 species. Elephants carbon stocks by: 1) promoting high wood density trees via preferential on leaves from low species, which more palatable...
Invasive species are a key driver of the global biodiversity crisis, but drivers invasiveness, including role pathogens, remain debated. We investigated genomic basis invasiveness in Ambrosia artemisiifolia (common ragweed), introduced to Europe late 19th century, by resequencing 655 ragweed genomes, 308 herbarium specimens collected up 190 years ago. In invasive European populations, we found selection signatures defense genes and lower prevalence disease-inducing plant pathogens. Together...
Journal Article The Influence of Seed Size Variation on Germination and Seedling Vigour in Diploid Tetraploid Dactylis glomerata L. Get access F. Bretagnolle, Bretagnolle Search for other works by this author on: Oxford Academic PubMed Google Scholar J. D. Thompson, Thompson R. Lumaret Annals Botany, Volume 76, Issue 6, December 1995, Pages 607–615, https://doi.org/10.1006/anbo.1995.1138 Published: 01 1995
Background and Aims:Ambrosia artemisiifolia is a ruderal weed introduced from North America to Europe. It produces large amount of achenes which are highly heterogeneous in size. Due the preponderant role propagules invasive plant processes, achene mass variability related germination, dispersal strategy life history traits offspring were investigated within this species.
• An improved inference of the evolutionary history invasive species may be achieved by analyzing genetic variation and population differentiation recently established populations their ancestral (historical) populations. Employing this approach, we investigated role gene flow in post-invasion evolution common ragweed (Ambrosia artemisiifolia). Using eight microsatellite loci, compared diversity structure among nine pairs historical recent France. Historical were reconstructed from herbarium...
The impact of natural selection on the adaptive divergence invasive populations can be assessed by testing null hypothesis that extent quantitative genetic differentiation (Q(ST) ) would similar to neutral molecular (F(ST) ). Using eight microsatellite loci and a common garden approach, we compared Q(ST) F(ST) among ten an species Ambrosia artemisiifolia (common ragweed) in France. In study with varying water nutrient levels, measured for five traits (height, total biomass, reproductive...
Summary In order to understand the successful spread of Ambrosia artemisiifolia in France, variability colonised habitat by this species was studied at 48 locations, from its central peripheral area distribution. Each site characterised a vegetation survey, description A. population and soil analysis. Differences number species, Shannon diversity index, evenness index plant life form spectra were compared among sites. A total 276 occurring along with observed. Therophytes hemicryptophytes...
Abstract This article documents the addition of 283 microsatellite marker loci to Molecular Ecology Resources Database. Loci were developed for following species: Agalinis acuta ; Ambrosia artemisiifolia Berula erecta Casuarius casuarius Cercospora zeae‐maydis Chorthippus parallelus Conyza canadensis Cotesia sesamiae Epinephelus acanthistius Ficedula hypoleuca Grindelia hirsutula Guadua angustifolia Leucadendron rubrum Maritrema novaezealandensis Meretrix meretrix Nilaparvata lugens...
About 60% of emerging infectious diseases in humans are zoonotic origin. Their increasing number requires the development new methods for early detection and monitoring agents wildlife. Here, we investigated whether blood meals from hematophagous flies could be used to identify circulating wild vertebrates. To this aim, 1230 blood-engorged were caught forests Gabon. Identified (30%) 20 vertebrate species including mammals, birds reptiles. Among them, 9% infected by different extant malaria...
Megafauna (terrestrial vertebrate herbivores > 5 kg) can have disproportionate direct and indirect effects on forest structure, function, biogeochemical cycles. We reviewed the literature investigating these tropical dynamics cycles in relation to ecology, paleoecology, vegetation modelling. highlight limitations of field‐based studies evaluating long‐term consequences loss megafauna. These are due inherent space‐time restrictions field‐studies a research focus seed dispersal services...
In Gabon, terrestrial mammals of protected areas have been identified as a possible source antibiotic-resistant bacteria. Some studies on antibiotic resistance in bats already carried out. The main goal our study was to detect extended-spectrum beta-lactamases (ESBLs) that are produced by enterobacteria from the Makokou region Gabon. Sixty-eight fecal samples were obtained 68 caught forests located 1 km little town Makokou. After culture and isolation, 66 Gram-negative bacterial colonies...
Abstract The genus Centaurium (centauries) comprises ca. 27 annual species and subspecies primarily distributed in the Mediterranean basin. Phylogenetic relationships, inferred from sequences of both nrDNA (internal transcribed spacer, ITS) cpDNA ( trnL intron ‐ F spacer) regions, confirm monophyly reveal importance polyploidy within genus. In each ITS clade, diploid to hexaploid centauries occur. Furthermore, polyploidization is often associated with hybridization events, as suggested by...
Abstract The seed-bank dynamics of Ambrosia artemisiifolia ( Asteraceae ), an annual invasive plant introduced from North America to Europe, were studied in nine French populations developing field crops, set-asides or wastelands. vertical distribution seeds was two different depth sections (0–5 cm and 5–20 cm), the spatial horizontal pattern analysed for selected field-crop set-aside populations. proportions dormant, non-dormant dead seeds, as well changes dormancy over time, evaluated....
Abstract: Survival of Afrotropical primary forests depends not only on habitat protection but also the animal species such as frugivorous primates, recognized most important seed dispersers for many plants. Here we investigate seed-dispersal services by bonobo ( Pan paniscus ) in an evergreen lowland tropical rain forest Congo Basin. In long-term research site LuiKotale, investigated food habits and processing based 22 mo behavioural observation, trial experiment daily GPS tracking a...