Asociaciones y competencia entre géneros en parcelas permanentes establecidas en el norte de Durango

Associations and competition between genders in permanent plots established in the north of Durango

Abstract

The ecosystem processes that take place within forest ecosystems have a very close relationship with the structure that they can show, therefore being able to characterize it allows creating better strategies to maintain and improve them. The present study was elaborated to determine the relationships and competition of Picea, Abies, Pseudotsuga and Cupressus, based on the growth, development, and different types of species mixture in a temperate forest of Durango. A dot pattern analysis was used to evaluate aggregation, species mixture, dominance, and dimensional differentiation. The dasometric data were obtained from 10 permanent plots (2500 m²), considering: diameter> 7.5 cm, height, azimuth, and distance. IVI and different diversity indices were estimated; in addition, a total of 1576 structural groups were analyzed. The average density for the evaluated areas was 629 N ha-¹, highlighting Pinus with 660 N ha-¹, the genera with the highest IVI were Pinus and Picea. Regarding true diversity, the plot obtained the highest value. Through the Clark & ​​Evans aggregation index, 90% of the areas showed a clustering trend in the genres included. Through the neighborhood indices, the areas showed a moderate mix, with a random and structurally co-dominant distribution.