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New Caledonia is a Pacific island with a unique biodiversity showing an extreme microendemism. Many species distributions observed on this island are extremely restricted, localized to mountains or rivers making biodiversity evaluation and conservation a difficult task. A rapid biodiversity assessment method based on acoustics was recently proposed. This(More)
a r t i c l e i n f o Keywords: Soundscape ecology Spatial statistics Spatio-temporal dynamics Tropical forest Animal acoustics Soundscape ecology aims to use biological, geophysical and anthropogenic sound to understand natural-human landscape dynamics. The analysis of natural soundscapes with no human noise is a prerequisite to understand and quantify the(More)
Measuring biodiversity is a challenging task for research in taxonomy, ecology and conservation. Biodiversity is commonly measured using metrics related to species richness, phylogenetic-, or functional-trait diversity of species assemblages. Because these metrics are not always correlated with each other, they have to be considered separately. A descriptor(More)
Questions: Is phylogenetic diversity (PD) an accurate surrogate for functional diversity (FD)? How are FD:PD correlations affected by the diversity index used, covarying factors and/or the strength of the phylogenetic signal in ecological traits? Methods: FD and PD indices might correlate simply because variation in species richness and evenness (referred(More)
Bioacoustics is historically adiscipline that essentially focuses on individual behaviour in relation to population and species evolutionary levels butr arely in connection with higher levels of ecological complexity likec om-munity,landscape or ecosystem. However, some recent bioacoustic researches have operated ac hange of scale by developing acoustic(More)
We developed an approach for analysing the effects of two crossed factors A and B on the functional, taxonomic or phylogenetic composition of communities. The methodology, known as crossed-DPCoA, defines a space where species, communities and the levels of the two factors are organised as a set of points. In this space, the Euclidean distance between two(More)
Invasive species can dramatically impact natural populations, especially those living on islands. Though numerous examples illustrate the ecological impact of invasive predators, no study has examined the genetic consequences for native populations subject to invasion. Here we capitalize on a natural experiment in which a long-term study of the brown anole(More)
a r t i c l e i n f o Acoustic monitoring has proved to be an efficient approach to monitor wildlife, notably in environments with limited visibility, such as tropical rainforests. Today, recording equipment allows acoustic data to be gathered in remote areas at wide spatial and temporal scales. The resulting datasets are large and the use of automated(More)
a r t i c l e i n f o Rapid acoustic surveys aim to estimate biodiversity based on the diversity of sounds produced by animal communities , and interest in this approach among conservation planners is increasing. Several indices of acoustic diversity have been proposed as proxies for species richness. However, in the field, the animal activity may be(More)
Genetic analysis of 16 deletions obtained in the amiA locus of pneumococcus is described. When present on donor DNA, all deletions increased drastically the frequency of wild-type recombinants in two-point crosses. This effect was maximal for deletions longer than 200 bases. It was reduced for heterologies shorter than 76 bases and did not exist for very(More)