Mean species richness at the first sampling (32 days).

<p>Mean species richness (±se) within single communities in undisturbed and disturbed patches (white and grey bars respectively). A1 and A2 were isolated patches, while B1, B2 and C1 were connected patches (see also <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0019525#pone-0019525-g001" target="_blank">Fig. 1</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0019525#pone-0019525-g002" target="_blank">2</a>).