“Diversidad y abundancia de malezas presentes en pasturas de las zonas ganaderas de la parroquia San Gerardo del cantón Girón.”

Abstract

The loss of plant species is increasing, in the next three decades more than ¼ of the existing plants in the world will have been lost, this extinction will threaten natural ecosystems, to demonstrate these important problems to carry out studies in identification and classification of species. The main objective of this research was to quantify the diversity and abundance of species in the pastures of the San Gerardo parish; To achieve this objective, 86 of 178 UPAs were selected, the areas that were sampled were established in two montane altitude floors (2,400m to 2,890m) and high montane (2,980m to 3,302m). The data collection was carried out using a wooden quadrant of 1m2, this was thrown randomly over the pasture 144 times. The species were taxonomically classified, identifying 15 families, which belonged to 22 genera and 24 species; Diversity was quantified using the Shannon and Simpson indices. The Simpson index allows me to classify that the montane altitude floor (1.96) has a greater diversity with respect to the high montane floor (0.58) and with the Simpson index there was no significant difference in terms of diversity between two altitude floors. The distribution of species allowed to identify the species, evidencing a reduction in wealth, diversity and abundance as the altitude increases. Species diversity studies will allow establishing a mapping where unwanted species can be identified, their incidence and distribution