El estudio tiene como objetivo evaluar la diversidad florística de los pastizales de montaña en cinco formaciones vegetales: tres pajonales y un césped de puna. Se utilizó el método de transección al paso modificado de Parker (1951). Se encontraron 22 familias, 52 géneros y 103 especies. Las Poaceae y la Asteraceae tuvieron mayor abundancia, las especies se ordenan en dos grupos. Los índices H’ oscilan entre medio y alto (2,75 y 3,41) sin relación significativa con la cobertura del suelo. El género Calamagrostis tiene el mayor IVI: C. vicunarum (15,64), C. amoena (13,29), C. curvula (12,87). Los índices de Jaccard mostraron mayor similaridad entre las formaciones vegetales de pajonal de Festuca rígida y el de C. amoena (0,43), seguido por el pajonal de F. rígida y el de F. dolichophylla (0,42) y la relación entre el pajonal de F. rígida y del de Césped de puna tienen la...

Knowledge of the flora and usefulness of Andean wetlands for livestock farming is very scarce, which led to interest in evaluating floral diversity, net aerial primary productivity (NAPP), ecological condition and carrying capacity for alpacas (CCA), in three wetlands of the Shullcas sub-basin in Peru. Floristic readings were taken in 10 quadrants distributed in a radial transect in each wetland and at typical times of the rainy and dry seasons. Phytomass cuts were made in regular periods of 30, 60, 90 and 120 days. Fourteen families of vascular plants with 33 genus and 41 species were found, the Shannon Wiener diversity index fluctuated between 2.28 ± 0.15 and 2.40 ± 0.17, the NAPP presented variation between the months evaluated in a range of 27.39 ± 33.73 to 97.86  ± 47.52 g dry material (DM)/m2, between cut-off periods from 132.12 ± 30.42 to 180.60 ± 32.89 g DM/m2 and between ...

El estudio tiene como objetivo evaluar la diversidad florística de los pastizales de montaña en cinco formaciones vegetales: tres pajonales y un césped de puna. Se utilizó el método de transección al paso modificado de Parker (1951). Se encontraron 22 familias, 52 géneros y 103 especies. Las Poaceae y la Asteraceae tuvieron mayor abundancia, las especies se ordenan en dos grupos. Los índices H’ oscilan entre medio y alto (2,75 y 3,41) sin relación significativa con la cobertura del suelo. El género Calamagrostis tiene el mayor IVI: C. vicunarum (15,64), C. amoena (13,29), C. curvula (12,87). Los índices de Jaccard mostraron mayor similaridad entre las formaciones vegetales de pajonal de Festuca rígida y el de C. amoena (0,43), seguido por el pajonal de F. rígida y el de F. dolichophylla (0,42) y la relación entre el pajonal de F. rígida y del de Césped de puna tienen la...

Knowledge of the flora and usefulness of Andean wetlands for livestock farming is very scarce, which led to interest in evaluating floral diversity, net aerial primary productivity (NAPP), ecological condition and carrying capacity for alpacas (CCA), in three wetlands of the Shullcas sub-basin in Peru. Floristic readings were taken in 10 quadrants distributed in a radial transect in each wetland and at typical times of the rainy and dry seasons. Phytomass cuts were made in regular periods of 30, 60, 90 and 120 days. Fourteen families of vascular plants with 33 genus and 41 species were found, the Shannon Wiener diversity index fluctuated between 2.28 ± 0.15 and 2.40 ± 0.17, the NAPP presented variation between the months evaluated in a range of 27.39 ± 33.73 to 97.86  ± 47.52 g dry material (DM)/m2, between cut-off periods from 132.12 ± 30.42 to 180.60 ± 32.89 g DM/m2 and between ...

Aims: determine the composition and floristic diversity, the similarity between sites based on the distribution of species in the altitudinal gradient, and determine the value of ecological importance, in Andean grassland ecosystems. Study Design: Original research. Place and Duration of Study: This study took place in the Huacracocha micro-watershed in the Central Highlands of Peru, during the rainy season (January - March 2022). Methodology: The agrostological evaluation points were determined taking into account twelve sites of interest were determined, located from the lowest part of the micro-watershed (4091.8 masl) to the part with the highest vegetation cover (4512.27 masl), the agrostological reading process at each evaluation site was carried out using the radial transect method with the line and intercept point technique. Results: We observed the presence of the presence of 78 ...

The high-Andean vegetation ecosystems of the Bombón Plateau in Peru face increasing degradation due to aggressive anthropogenic land use and the climate change scenario. The lack of historical degradation evolution information makes implementing adaptive monitoring plans in these vulnerable ecosystems difficult. Remote sensor technology emerges as a fundamental resource to fill this gap. The objective of this article was to analyze the degradation of vegetation in the Bombón Plateau over almost four decades (1985–2022), using high spatiotemporal resolution data from the Landsat 5, 7, and 8 sensors. The methodology considers: (i) the use of the atmosphere resistant vegetation index (ARVI), (ii) the implementation of non-parametric Mann–Kendall trend analysis per pixel, and (iii) the affected vegetation covers were determined by supervised classification. This article’s results sho...