How many species are there really?

Rod Page at iPhylo draws attention to a new paper in Systematic Biology (Costello et al 2011) estimating the total number of species. They come to a much lower figure than a previous paper (Camilo Mora et al 2011). Rod said something interesting that linked in to my thoughts on species numbers. “The fuss over…

Species numbers

Christopher Taylor at the excellent Catalogue of Organisms has a thought provoking post on the taxonomic diversity of described species. He has a picture of animal groups, plants and fungi scaled by number of described species. I like these sorts of pictures; they are great for shocking undergraduates who have never really thought about the…