The feeding diversity of subtidal samples of macroinvertebrates from Ria Formosa was estimated with Shannon Wiener information index and complementary evenness. The results were compared with other commonly used methodologies under the European water framework directive, such as diversity indices, AMBI and ITI. Assuming that in a healthy environment all feeding groups are present, and that no g...

Despite the advantage of avoiding the costs of sexual reproduction, asexual vertebrates are very rare and often considered evolutionarily disadvantaged when compared to sexual species. Asexual species, however, may have advantages when colonizing (new) habitats or competing with sexual counterparts. They are also evolutionary older than expected, leaving the question whether asexual vertebrates...

Resumen En este trabajo se analiza el subdominio espacial de la estasis angular o los marcos referencia en toba del oeste Formosa (guaycurú, Argentina), desde perspectiva tipología semántica. El corpus está compuesto por datos recolectados, a partir estímulo visual ‘Men and Tree Photo Matching’ (Levinson et al., 1992), comunidad Vaca Perdida (Formosa, Argentina). Los detectados son tipo absolut...