Examinando por Autor "Ayazo Berrocal, Roger David"

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  • Miniatura
    PublicaciónAcceso abierto
    Estratificación vertical de mariposas frugívoras (Lepidoptera: Nymphalidae) en bosques secos y húmedos de Córdoba
    (Universidad de Córdoba, 2024-01-29) Perez, Brayan Andrés ; Ayazo Berrocal, Roger David ; Linares Arias, Juan Carlos; Gasca Álvarez, Héctor Jaime
    La distribución de insectos en los bosques tropicales está determinada por factores que varían según el tipo de hábitat (variación horizontal), o por la variación vertical entre los estratos del bosque. En esta dimensión la distribución de insectos está determinada por un gradiente vertical. De esta manera, la diferencia en la composición y estructura de las especies vegetales a través de las dimensiones verticales crea distintos microclimas en los estratos de los bosques, lo que conduce a una estratificación de las condiciones y recursos. Los mecanismos que generan la alta diversidad de especies en los bosques tropicales son poco conocidos, aunque la estratificación vertical es un componente importante de la diversidad, rara vez se considera o se mide directamente. En los bosques tropicales, los ensambles de mariposas frugívoras presentan una clara estratificación vertical, con algunas especies dominantes en el dosel y otras en el sotobosque.
  • Miniatura
    PublicaciónAcceso abierto
    Los sistemas silvopastoriles, al igual que otros usos de suelo arbolados en paisajes agropecuarios modifican el ensamble de mariposas frugívoras
    (2020-11-12) Herazo Fernández, Ides Daniela; Ayazo Berrocal, Roger David
    In this research, the diversity of frugivorous butterflies was studied to answer how silvopastoral systems contribute to biodiversity in agricultural landscapes. Three livestock areas managed under the silvopastoral systems scheme were selected and compared with four of the land uses with the largest area in the C.I. Turipaná de Agrosavia (CR rotational crops, PF forest plantations, BO forests and extensive livestock pastures PT) and which in turn represent the typical coverage of the rural landscape of Cordoba. For each land use, three areas were selected that represented repetitions. Five Van Someren Rydon traps baited with ripe bananas and beer were installed in each replication. The traps were spaced 100 m apart and were active for 48 hours. 895 individuals belonging to four subfamilies, eight tribes, twelve genera and 15 species were collected. All species belonged to the Nymphalidae family. The alpha diversity analysis of the plant covers suggests that there were no significant differences between the covers. The NMDS ordering analysis (Stress = 0.08) revealed the formation of three groups, the first group consisting of BO, SP and PF coverages, the second and third group consisting only of one group, CR and PT respectively. Simper's analysis revealed that land uses with trees differed from CRs and PTs by registering higher abundance of Taygetis laches, Hermeuptychia hermes and Hamadryas feronia species. For its part, the PTs group differed from the CR coverage by presenting a lower abundance of Taygetis laches, and not registering Nica flavilla and Historis odius individuals. In conclusion, silvopastoral systems like the other land uses with trees (BO and PF), modify the assemblage of frugivorous butterflies favoring the abundance of some species; The opposite effect occurs with systems without trees (CR and PT).