Species management should be based on accurate estimations on the size and density of the target population. In the case of the otter, these estimations are difficult to obtain due to their habitat, low densities and elusiveness, and these have relied mainly on surveys of animal signs or on specific ad hoc methods, and lately, in genotyping. We have applied newly-developed spatial capture-recapture model to estimate the otter population of the Tablas de Daimiel National Park by a spatially explicit capture-recapture of unmarked individuals using camera trapping-data together with distance sampling. The density estimated is 0.557 (±0.317) otters/100 ha, and we have achieved reliable information about activity, movements, and space use.

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Communication in both formal and non-for-mal education requires specific spaces, com-municators and activities.  Communication in formal science is highly regulated by research needs and the purposes of higher education institutions. In non-formal science, communi-cation is more intrinsic, voluntary and typica-lly non-sequential, given that it is a function of activities designed in out-of-school envi-ronments. In both cases, communication is linked to learning and is mediated by indivi-dual or community engagement and the need for constant dialogue between communica-tors and public and by the need to constantly design new architectures of interaction