Field Notes From The Past (15): The mustard ‘tree’

  Black Mustard Brassica nigra Flowers–Bright yellow, fading pale…. Preferred Habitat–Roadsides, fields, neglected gardens. Flowering Season–June–November. Distribution–Common throughout our area; naturalized from Europe and Asia. “The kingdom of heaven is like unto a grain of mustard seed, which a man took and sowed in his field: which indeed is less than all seeds; but when…

Bigger heads for greener* meals

Versión en español aquí More than 2 months ago me and some colleagues got a paper published in which we described parallel ontogenetic changes in the diet and head morphology of a lizard, specifically a herbivorous lizard (at least as an adult, as you will see). I decided it is not too late to write…

My top 5 favorite papers

Versión en español aquí As the title says, this is a totally subjective list of my favorite papers. I’m of course biased in terms of subjects and authors because of my own field of study and interests. But how does a paper get into my list of favorites? The requirements are: How much they motivated…

The Johnson-Neyman technique and an R script to apply it

Versión en español aquí When starting to write this post I wanted to give a small introduction to the analysis of covariance (ANCOVA), because this post is in part based on that analysis. However, it might be better for you to review it by yourself if you need to. As for any other statistical method…

My story so far

Versión en español aquí Many times people relate me with lizards. When they see a picture, a video, or even if they see one face to face, dead or alive, they ask me for the species ID. The truth is that I know almost nothing about lizards that is not in an evolutionary context. I…

Rapid Evolution, Rapid Extinction and the Influence of Man

Versión en español aquí A popular myth relates “evolution” with strictly long time periods, thousands or millions of years. This is understandable given that the most popular examples (dinosaurs – birds, Australopithecus – Homo sapiens) are those in which big changes needed a lot of time to “transform” a living being into a totally different…