A5078998443- Environmental DNA in Biodiversity Studies
- Microbial Community Ecology and Physiology
- Wildlife Ecology and Conservation
- Rangeland Management and Livestock Ecology
- Identification and Quantification in Food
- Species Distribution and Climate Change
- Geology and Paleoclimatology Research
- Ecology and Vegetation Dynamics Studies
- Invertebrate Taxonomy and Ecology
- Mycorrhizal Fungi and Plant Interactions
- Plant and animal studies
- Primate Behavior and Ecology
- Forensic and Genetic Research
- Soil Carbon and Nitrogen Dynamics
- Parasite Biology and Host Interactions
- Gut microbiota and health
- Study of Mite Species
- Archaeological Research and Protection
- Protist diversity and phylogeny
- Animal Genetics and Reproduction
- Insect symbiosis and bacterial influences
- Land Use and Ecosystem Services
- Helminth infection and control
- Bat Biology and Ecology Studies
- Coastal and Marine Management
Princeton University
2018-2024
Centre National de la Recherche Scientifique
2011-2024
École Nationale des Travaux Publics de l'État
2022-2024
Milieux environnementaux, transferts et interactions dans les hydrosystèmes et les sols
2022-2024
Université Claude Bernard Lyon 1
2022-2024
Unité de Recherche Pluridisciplinaire Sport, Santé, Société
2024
Sport et sciences sociales
2024
Institut des Sciences de l'Evolution de Montpellier
2020-2024
Macquarie University
2019-2024
Université de Montpellier
2021-2024
Abstract Environmental DNA ( eDNA ) metabarcoding is increasingly used to study the present and past biodiversity. analyses often rely on amplification of very small quantities or degraded DNA. To avoid missing detection taxa that are actually (false negatives), multiple extractions amplifications same samples performed. However, level replication needed for reliable estimates presence/absence patterns remains an unaddressed topic. Furthermore, PCR/sequencing errors might produce false...
Populations of the world's largest carnivores are declining and now occupy mere fractions their historical ranges. Theory predicts that when apex predators disappear, large herbivores become less fearful, new habitats, modify those habitats by eating food plants. Yet experimental support for this prediction has been difficult to obtain in large-mammal systems. After extirpation leopards African wild dogs from Mozambique's Gorongosa National Park, forest-dwelling antelopes [bushbuck...
Paleoenvironmental studies are essential to understand biodiversity changes over long timescales and assess the relative importance of anthropogenic environmental factors. Sedimentary ancient DNA (sedaDNA) is an emerging tool in field paleoecology has proven be a complementary approach use pollen macroremains for investigating past community changes. SedaDNA-based reconstructions environments often rely on indicator taxa or expert knowledge, but quantitative ecological analyses might provide...
Abstract Crop raiding by wildlife poses major threats to both conservation and human well‐being in agroecosystems worldwide. These are particularly acute many parts of Africa, where crop raiders include globally threatened megafauna such as elephants, smallholder agriculture is a primary source livelihood. One framework for understanding herbivore feeding behaviour, the forage‐maturation hypothesis, predicts that herbivores should align their movements with intermediate forage biomass (i.e.,...
Ecological niche differences are necessary for stable species coexistence but often difficult to discern. Models of dietary differentiation in large mammalian herbivores invoke the quality, quantity, and spatiotemporal distribution plant tissues growth forms agnostic toward food identity. Empirical support these models is variable, suggesting that additional mechanisms resource partitioning may be important sustaining large-herbivore diversity African savannas. We used DNA metabarcoding...
Competition, facilitation, and predation offer alternative explanations for successional patterns of migratory herbivores. However, these interactions are difficult to measure, leaving uncertainty about the mechanisms underlying body-size-dependent grazing-and even whether succession occurs at all. We used data from an 8-year camera-trap survey, GPS-collared herbivores, fecal DNA metabarcoding analyze timing, arrival order, among grazers in Serengeti National Park. Temporal grazing is...
Abstract Megafauna assemblages have declined or disappeared throughout much of the world, and many efforts are underway to restore them. Understanding trophic ecology such reassembling systems is necessary for predicting recovery dynamics, guiding management, testing general theory. Yet, there few studies recovering large‐mammal communities, fewer still that characterized food‐web structure with high taxonomic resolution. In Gorongosa National Park, large herbivores rebounded from...
Abstract Sympatric large mammalian herbivore species differ in diet composition, both by eating different parts of the same plant and species. Various theories proposed to explain these differences are not mutually exclusive, but difficult reconcile confront with data. Moreover, whereas several ideas were originally developed reference within‐plant partitioning (i.e. consumption tissues), they may analogously apply species; this possibility has received little attention. Plant functional...
Abstract Investigating how trophic interactions influence the β‐diversity of meta‐communities is paramount importance to understanding processes shaping biodiversity distribution. Here, we apply a statistical method for inferring strength spatial dependencies between pairs species groups. Using simulated community data generated from multi‐trophic model, showed that this can approximate biotic in communities based on patterns across When applied soil along an elevational gradient French...
Tropical rainforests are vital for global biogeochemical cycles and human well-being shelter a tremendous, unique, yet underexplored reservoir of biodiversity. With the increasing pressures they face, including deforestation, biological invasions, climate change, improving methods to monitor their biodiversity is now pressing societal demand. In recent years, amplification sequencing taxonomically-informative DNA fragments from environmental samples (i.e. eDNA) has revolutionised...
Abstract Major disturbances can temporarily remove factors that otherwise constrain population abundance and distribution. During such windows of relaxed top‐down and/or bottom‐up control, ungulate populations grow rapidly, eventually leading to resource depletion density‐dependent expansion into less‐preferred habitats. Although many studies have explored the demographic outcomes ecological impacts these processes, fewer examined individual‐level mechanisms by which they occur. We...
Soil microbial communities play a key role in ecosystem functioning but still little is known about the processes that determine their turnover (β‐diversity) along ecological gradients. Here, we characterize soil β‐diversity at two spatial scales and multiple phylogenetic grains to ask how archaeal, bacterial fungal are shaped by abiotic biotic interactions with plants. We characterized plant using DNA metabarcoding of samples distributed across within eighteen plots an elevation gradient...
Spatially overdispersed mounds of fungus-farming termites (Macrotermitinae) are hotspots nutrient availability and primary productivity in tropical savannas, creating spatial heterogeneity communities ecosystem functions. These influence the local nutrients part by redistributing across landscape, but links between termite engineering soil microbes that metabolic agents cycling little understood. We used DNA metabarcoding soils from Odontotermes montanus to examine on microbial a semi-arid...
During the late nineteenth century, Europeans introduced rabbits to many of sub-Antarctic islands, environments that prior this had been devoid mammalian herbivores. The impacts on indigenous ecosystems are well studied; notably, they cause dramatic changes in plant communities and promote soil erosion. However, responses fungal such biotic disturbances remain unexplored. We used metabarcoding extracellular DNA assess diversity at sites Kerguelen Islands with contrasting histories...
Equids are chronically infected with parasitic strongyle nematodes. There is a rich literature on horse strongyles, but they difficult to identify morphologically and genetic studies strongyles infecting other equid species few, hampering of host specificity. We sequenced expelled worms from two sympatric zebra in central Kenya expand the phylogeny used DNA metabarcoding faecal samples genetically characterize nemabiomes for first time. generated sequences several new public reference...
Amidst global shifts in the distribution and abundance of wildlife livestock, we have only a rudimentary understanding ungulate parasite communities parasite-sharing patterns. We used qPCR DNA metabarcoding fecal samples to characterize gastrointestinal nematode (Strongylida) community composition sharing among 17 sympatric species wild domestic large mammalian herbivore central Kenya. tested suite hypothesis-driven predictions about role host traits phylogenetic relatedness describing...
Monitoring sediment biota is an essential step for the quality assessment of aquatic ecosystems. Environmental DNA-based approaches biomonitoring are increasing in popularity; yet, commercial kits and protocols extracting total DNA from sediments remain expensive time-consuming. Furthermore, they can accommodate only small amounts sediments, potentially preventing adequate representation local biodiversity, especially macro-organisms. Here, we assessed reliability a cost- time-effective...
Agricultural run-off in Australia's Mackay-Whitsunday region is a major source of nutrient and pesticide pollution to coastal inshore ecosystems the Great Barrier Reef. While effects are well documented for region's coral seagrass habitats, ecological impacts on estuaries, direct recipients run-off, less known. This particularly true fish communities, which shaped by physico-chemical properties waterways that vary greatly tropical regions. To address this knowledge gap, we used environmental...
Here we present the results from a bourgeoning tool, analyses of lake sediment DNA applied to reconstruction agriculture and landscape histories (plant mammal DNA) in French Alps. As tool is pioneer, first part manuscript focused on study conditions archive sediments reliability data. Results suggest that lakes submitted high detrital inputs are more favourable record coming catchment. Moreover, show pollen complementary. Combining these two approaches, can distinguish local regional...