Official COM(P)ADRE Blog

Can demographic data be borrowed across species? Probably not for plants (27.8.2018)
A common challenge in conserving endangered species is not knowing enough about the species itself. Information about the basic biology of the threatened species is critical for helping to determine how well the species is doing and exploring possible strategies for recovery. In particular, information on survival and fecundity rates at different life stages can […]

Embracing sampling uncertainty in analyses with COM(P)ADRE (8.6.2018)
by Patrick Barks (University of Southern Denmark, email: The COM(P)ADRE Plant and Animal Matrix Databases together contain thousands of population projection matrices from hundreds of individual studies. The availability of these matrices to researchers has led to fascinating comparative analyses in the fields of ecology, evolution, and demography, at taxonomic, spatial, and temporal scales […]

Demography beyond a dissertation: profiting from well replicated and long term data (5.4.2018)
Although there are thousands of studies of population dynamics (Crone et al. 2011, Merow et al. 2014), most occur at small spatial scales and span few years (Menges 2000, Crone et al. 2011, Salguero-Gómez et al. 2015). We are persuaded that limited spatial replication and short study intervals can hinder our ability to adequately understand […]

Attacking the question of vegetative dormancy with COMPADRE (2.4.2018)
Vegetative dormancy is the tendency that some herbaceous plants have to forego sprouting for one or more years at a stretch. It is a remarkably common condition among the terrestrial plants, having been found in over 20 plant families, and over 100 plant species. The real number is likely to be far higher, because our […]

Introducing our brand new research network coordinator (5.3.2018)
Hola a todos! My name is Haydée Hernández Yáñez, and I am the new research coordinator for the COMPADRE/COMADRE database. I am very happy to have recently joined the team. I am keen to contribute to the expansion of this remarkable repository of matrix population matrices for plants and animals under the auspices of a […]

What makes some plant species more vulnerable to extinction than others? With the current extinction crisis in mind, this question is becoming increasingly important. Because for more than 90% of known plant species the current conservation status is still unassessed (IUCN, 2017) and with a lot of species yet to be discovered (Pimm & Raven, […]

Accounting for clonality in plant demography – a story of an unintended article (23.11.2017)
The story of this article started already some three years ago at the BES symposium Demography beyond populations organised by Rob Salguero-Gómez and colleagues. Two of us were sitting in the auditorium and listening to talks, when almost simultaneously we had the same idea. “Do clonal species differ in their demographic characteristics? They definitely should, […]

We got the grant! (14.8.2017)
On August 5, the COMPADRE/COMADRE team was awarded an NSF grant to further develop our matrix databases. The funded project, “An Open-Access Global Repository of Plant and Animal Demographic Data”, will be led by Judy Che-Castaldo at Lincoln Park Zoo in Chicago, IL. This funding comes from the Advances in Biological Informatics program and will […]

Our upcoming workshop in Portland, OR (2.8.2017)
Over the last few years we have run numerous workshops on using the COMPADRE Plant Matrix Database and COMADRE Animal Matrix Database, and on matrix population models (MPMs) more generally. Where better to run our next workshop than the upcoming Ecological Society of America (ESA) meeting in Portland, Oregon? This yearly conference brings together academics, […]

Illuminating the world’s demographic dark corners (28.4.2017)
Perhaps by pure coincidence, I was the first user to have downloaded COMPADRE when it first went live, back in 2014. At that time, Rob Salguero-Gómez and I were at the same airBnB, and ready to attend the EvoDemoS meeting at Stanford. At that time and place, we were less than 60 km from the nearest […]