Figure 1. Mean Chlorophyll a (Chl a) concentration (±SE) of 19 common sponge species collected within the Miskito Cays of Honduras.

Sponges are categorized based on their overall microbial abundance into High Microbial Abundance (HMA) and Low Microbial Abundance (LMA) groups (Weisz, 2006; Erwin & Thacker, 2007; Maldonado, Ribes & van Duyl, 2012; Gloeckner et al., 2014). The horizontal black line represents the cutoff above which sponges are considered to have high chl a (>125 µg of chl a [g of sponge tissue]⁻¹; Erwin & Thacker, 2007). Abbreviations represent the first letter of the genus name, followed by the first three letters of the specific epithet.