Dynamics of epiphytism on Padina concrescens (Dictyotales: Phaeophyta) from the southwestern coast of the Baja California Peninsula, Mexico

Abstract

The community dynamics of algal epiphytes was studied in relation to the area available on Padina concrescens at Los Cerritos, Baja California Sur (Mexico). Monthly surveys were conducted over ten months. Experimental structures were also deployed in order to assess epiphyte-host synchrony and affinity. The results rejected the hypothesis of a synchronous appearance, showing that epiphytes were present all the time and occupied the space available. By the end of the season they covered 60% of all the host´ s area. The environments from where samples were taken revealed differences in the structure of epiphytes, though their development trend over the host was similar. The exclusive colonization of the artificial substrate by coralline algae is attributed to the behavior of this type of epiphyte.