Birte Matthiessen, Erik Mielke, and Ulrich Sommer. 2010. Dispersal decreases diversity in heterogeneous metacommunities by enhancing regional competition. Ecology 91:2022–2033.

Appendix B. Photographs of species, communities, and experimental set-up.

FIG. B1. Photos of the nine species used in the experiment: (a) Achnanthes brevipes (ACH), (b) Amphora coffaeiformes (AMP), (c) Cocconeis spec. (COC), (d) Entomoneis paludosa (ENT), (e) Melosira varians (MEL), (f) Navicula ramosissima (NAV), (g) Nitzschia spec. (NITZ I), (h) Nitzschia sigma (NITZ II), (i) Stauroneis contricta (STA).

FIG. B2. Microphytobenthos communities in the wells.

FIG. B3. Experimental set-up in a climate cabinet.