El objetivo del presente estudio fue evaluar la macrofauna edáfica como indicador biológico de la recuperación de suelos degradados en una cronosecuencia post-mineria. Se utilizo la metodología de extracción manual propuesta por el programa de biología y fertilidad de suelo. Se recolectaron 4 réplicas de muestras de suelo mediante monolitos, en parcelas con diferentes tiempos de abandonos y bosque de referencia. Los resultados indicaron que existe un patrón progresivo de la abundancia y biomasa en los diferentes tiempos de abandono. Los grupos funcionales más predominantes fueron los ingenieros del suelo. Mientras que los órdenes más representativos fueron Hymenoptera y olygochetos. La riqueza de la vegetación tuvo influencia positiva en la abundancia, riqueza y biomasa de la macrofauna, pero no fue significativa (p> 0,05). La capacidad de intercambio catiónico tuvo un efect...

The rapid urban and agricultural expansion cause severe impacts on soil water infiltration capacity, but these effects have not yet been sufficiently investigated, especially in the Peruvian Amazon. The study aimed to analyze the variations in speed and soil infiltration in two vegetation cover types (primary intervened forest and pasture) in the Peruvian Amazon. The infiltration rate of the soil was measured using the single ring infiltrometer; three samples were collected in the pasture and six in the primary forest. With the values obtained, the infiltration curves were constructed. To evaluate differences in infiltration capacity between cover vegetation types, we used the t‑Student test. Our results show that the infiltration capacity in the primary forest was greater than in the pasture (p ≤ 0,01, t‑Student test). Regarding the physicochemical characteristics of the soil, we ...

The rapid urban and agricultural expansion cause severe impacts on soil water infiltration capacity, but these effects have not yet been sufficiently investigated, especially in the Peruvian Amazon. The study aimed to analyze the variations in speed and soil infiltration in two vegetation cover types (primary intervened forest and pasture) in the Peruvian Amazon. The infiltration rate of the soil was measured using the single ring infiltrometer; three samples were collected in the pasture and six in the primary forest. With the values obtained, the infiltration curves were constructed. To evaluate differences in infiltration capacity between cover vegetation types, we used the t‑Student test. Our results show that the infiltration capacity in the primary forest was greater than in the pasture (p ≤ 0,01, t‑Student test). Regarding the physicochemical characteristics of the soil, we ...

The aim of this study was to evaluate the contamination of surface waters in the urban periphery of Puerto Maldonado (Peruvian Amazon), using biological, physicochemical, and microbiological analyses. The water samples were collected in six water bodies (two rivers, three streams and one lake). The physicochemical parameters of each study site did not exceed the limits of the Peruvian Environmental Quality Standard (ECA), except for dissolved oxygen in rivers near urban areas. Pollution of water resources is related to raw sewage and rainwater runoff. Thus, the highest points of faecal contamination were in rivers near urban areas, exceeding the threshold established by the ECA for the conservation of the aquatic environment (CFU ml-1 >2000). In the Madre de Dios River, the concentration of faecal coliforms exceeded the maximum allowed by the ECA by 75 fold, indicating that the Tambop...