Abstract

MOSCOL, José; PUESCAS, Miguel  and  HERRERA, Eber. Tree structure and diversity and its relation with the forest soil in a dry forest ecosystem. Manglar [online]. 2022, vol.19, n.4, pp.323-330.  Epub Dec 17, 2022. ISSN 1816-7667.  http://dx.doi.org/10.57188/manglar.2022.041.

Soil is a chief environmental factor in the site quality of a forest ecosystem. In this sense, the objective was to determine the relationship between soil characteristics with tree structure and diversity. 13 plots were established using systematic sampling. Trees were considered since 5 cm in diameter at breast height. Composite soil samples were taken for physical-chemical analyses. Tree vegetation consisted of Bursera graveolens, Caesalpinia paipai, Colicodendron scabridum, Cynophalla flexuosa, Loxopterygium huasango, and Prosopis pallida. The population density was 47.7 Ind/ha and 54% of the soil was canopy cover. The diameter distribution presented a trend in the form of an inverted "J"; with an altimetric distribution in the middle and lower strata. Three species represented 81% of the IVI. A diversity index of Shannon - Wiener (0 - 1.39) and Simpson (0 - 0.75). Of the physical and chemical parameters analyzed: moisture content, apparent density, percentage of sand, and percentage of organic matter are the variables that can explain the presence or absence of species and the number of individuals in the study area.

Keywords : Savanna - like forest; horizontal structure; vertical structure; thorn woodland; soil characteristics.

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