New paper: Paleofire Dynamics in Central Spain During the Late Holocene: the Role of Climatic and Anthropogenic Forcing

I am very pleased to share this new article with José Antonio López-Sáez and colleagues: DOI:10.1002/ldr.2751 about the fire history of a mountain range in central Spain.   Abstract: The use of fire and, consequently, its severity and incidence on the environment, has grown steadily during the last millennia throughout the Mediterranean. This issue can be assessed in […]

ggplot2 pollen diagram (and dendrogram)

In R, excellent packages provide ways to plot pollen or more generally stratigraphic diagrams. The two main tools come from the rioja package with “strat.plot” and the analogue package with “Stratiplot”. Althought those two functions are very comprehensive (you can include a dendrogram, pollen zones, etc.), easy to use, and highly customizable; I was still […]

New paper: Global Modern Charcoal Dataset (GMCD): A tool for exploring proxy-fire linkages and spatial patterns of biomass burning

I am very pleased to share this article by Donna Hawthorne, Colin J. Courtney Mustaphi, Julie Aleman et al. on a new tool and data repository the Global Modern Charcoal Dataset which is currently in development by the GPWG and colleagues working in paleofire research. The GMCD is a unique opportunity to develop paleofire research and achieve charcoal […]

Forum Géodiversité

Le labo félicite Andy qui a reçu le prix de vulgarisation au forum Géodiversité du département de géographie qui a eu lieu le 24 mars dernier.  Jordan à quant à lui reçu le prix de la meilleure présentation en Géographie Physique et le prix de la meilleure présentation en Géographie. Par ailleurs la photographie prise par Jordan […]

Le Département de géographie affirme son souci d’inclusivité

Montréal, le 3 mars 2017 – S’inscrivant dans les prises de positions récentes en ce sens par d’autres organisations du milieu de la géographie, le Département de géographie de l’Université de Montréal a tenu à réitérer son esprit d’ouverture et d’inclusion. C’est lors de sa 350e Assemblée départementale tenue le 17 février dernier que l’assemblée […]

Geo Seminar

Le 16 février midi, Carla Staver qui est professeur au département d’Écologie et de Biologie Évolutive de Yale, viendra donner une présentation de sa recherche au département de Géographie de l’UdeM, venez nombreux! PDF

paleofire 1.1.9 !

A new version of the R package paleofire 1.1.9 is available on CRAN ( and GitHub ( The release includes few bug fixes and improvements of existing functions, including more flexibility in pfAddData function and new options in kdffreq, see examples below:

New paper: Land-use change outweighs projected effects of changing rainfall on tree cover in sub-Saharan Africa

I am pleased to share this new article with Julie Aleman and Carla Staver: DOI: 10.1111/gcb.13299 (preprint) about modelling of future tree cover in sub-Saharan Africa. Abstract:  Global change will likely affect savanna and forest structure and distributions, with implications for diversity within both biomes. Few studies have examined the impacts of both expected precipitation and […]