We are increasingly hearing about “the Anthropocene”, both in and outside of the scientific community. The Anthropocene is a term used by geologists to describe the geological era in which we now live. It means ‘the era of Man’, i.e. the era in which we recognise Man as a major geological force, a force that alters significantly and globally the Earth. Although this term is increasingly used, the Anthropocene is.. Read More
New job, new website, new projects… new blog!
Until now, the main use of this website was as an online CV, to show my research, and, to be honnest, to help me finding a permanenent position in the retlentless world of research. Well, voilà! It’s done! I’ve been recruited as a lecturer in the Muséum National d’Histoire Naturelle (Paris), in the lab. Biodiversity & Macroecology, UMR Biology of Aquatic Organisms & Ecosystems. I’ve decided to make profit of.. Read More
Future invasions and climate change
Biological invasion is increasingly recognized as one of the greatest threats to biodiversity. The International Union for the Conservation of Nature has defined a list of the “100 of the world’s worst invasive species”. A research team (CNRS / Université Paris-Sud / Université Joseph Fourier Grenoble 1 / Université de Rennes 1 / MNHN / Institute for Environmental Protection and Research, Rome / Netherlands Environmental Assessment Agency) has predicted that.. Read More
Correlation plots in R
I have just released the version 1.2 1.2-1 of the Rarity package, and this new version introduces a new function to make what I called “correlation plots”. These correlation plots provide a synthetic and convenient representation of the correlation between 2 or more variables, allowing an easy analysis. The above figure is an example with data of crab sizes (from the package MASS). The plot is split in two: the.. Read More
Rarity package for calculation of Indices of rarity
The package “Rarity”, which allows calculating rarity indices for species and assemblages of species, is now available on the Comprehensive R Archive Network. This package allows easy calculation of the new indices integrating rarity cut-offs; this flexibility allows fitting indices to the considered taxon, geographical area and/or spatial scale, i.e., to the considered database. See the rarity indices section for more details and examples. This package simply requires occurrence data.. Read More