Resumo

AMARAN-RUIZ, María de Fátima et al. Arboreal structure in hydrological regimes present in a gallery forest of northeast Mexico. Ecosistemas y recur. agropecuarios [online]. 2024, vol.11, n.1, e3705.  Epub 16-Ago-2024. ISSN 2007-901X.  https://doi.org/10.19136/era.a11n1.3705.

The study of the structure and diversity of forest ecosystems is essential to understand the functioning and dynamics of forests. The structure and diversity of woody species in different types of watercourses along the Santa Catarina river in Nuevo Leon, Mexico were described. Three conditions were identified: permanent (I), semi-permanent (II) and temporary (III). In each condition, 14 rectangular sites of 1 000 m2 were established. All species were identified. The crown diameter of each individual was measured. The Importance Value Index (IVI) was determined for each condition. Species richness and diversity was calculated with the Margalef (D Mg ) and Shannon-Wiener (H') indices. In addition, the similarity between conditions was determined using the Sorensen index (Is). 32 species, 29 genus and 16 families were identified. Condition I recorded greater specific richness and greater diversity with 28 species and a diversity value H' = 2.41 ± 0.710, where Salix nigra presented the highest IVI. Condition II presented the highest Margalef richness with a D Mg value = 1.77 ± 0.22. In condition III Leucaena leucocephala turned out to be the most important species. The similarity between conditions was greater than 50%. The results demonstrate the structural variation of the vegetation in different hydrological regimes, which constitutes a solid base for future investigations on the development of the vegetation associated with the Santa Catarina river, and other riparian areas of north of Mexico.

Palavras-chave : Abundance; crown area; diversity; Santa Catarina river; similarity.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )