Otter densities of different studies including information on studied habitats and on employed methods.

<p>CMR—capture-mark-recapture analyses</p><p>MNA—minimum number alive (no estimation only number of genotypes)</p><p>AC—accumulation curve, e.g. [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0125684#pone.0125684.ref063" target="_blank">63</a>]</p><p>For a comparison, we included results of this study (bold).</p><p>Otter densities of different studies including information on studied habitats and on employed methods.