The study analyzes the conservation value of forests assigned to indigenous populations of the Peruvian Amazon: San Jacinto and Puerto Arturo in Madre de Dios, communities with different realities in terms of conservation and forest management. Two scenarios prevail here: The San Jacinto indigenous community with 7 033,98 ha of forest, is characterized by disorder and the development of activities that put the community at risk (gold mining), while Puerto Arturo with 3 731 ha is a community committed to the management and conservation of its resources. By means of the Contingent Valuation Method (CVM) through the dichotomous logit model we try to define the willingness of the individuals to accept compensation (WAC) on proposed prices of a hypothetical scenario. The results show that the average annual WAC to implement the environmental program was S/ 20,46 (USD 6,30) and S/ 14,84 (USD 4...

The study analyzes the conservation value of forests assigned to indigenous populations of the Peruvian Amazon: San Jacinto and Puerto Arturo in Madre de Dios, communities with different realities in terms of conservation and forest management. Two scenarios prevail here: The San Jacinto indigenous community with 7 033,98 ha of forest, is characterized by disorder and the development of activities that put the community at risk (gold mining), while Puerto Arturo with 3 731 ha is a community committed to the management and conservation of its resources. By means of the Contingent Valuation Method (CVM) through the dichotomous logit model we try to define the willingness of the individuals to accept compensation (WAC) on proposed prices of a hypothetical scenario. The results show that the average annual WAC to implement the environmental program was S/ 20,46 (USD 6,30) and S/ 14,84 (USD 4...

In the southeastern Peruvian Amazon, small-scale and artisanal gold mining has become a common activity and represents one of the greatest threats to forests. The study evaluated the natural regeneration of vegetation and the physicochemical properties of the soil for a chronosequence in Madre de Dios (Peru). Fourteen plots of 250 m2 were installed, distributed across areas with abandonment times varying from 2 to 19 years. All stems with a diameter at breast height ≥ 1 cm in each plot were recorded and classified according to size categories (saplings, poles, and trees). We recorded 1023 individuals distributed in 80 species and 27 families. The most abundant families were Fabaceae, Annonaceae and Euphorbiaceae. Inga thibaudiana, Ochroma pyramidale, and Cecropia membranacea were present in all three size categories. The plots exhibited high heterogeneity, with medium diversity and ver...

Fire is one of the significant drivers of vegetation loss and threat to Amazonian landscapes. It is estimated that fires cause about 30% of deforested areas, so the severity level is an important factor in determining the rate of vegetation recovery. Therefore, the application of remote sensing to detect fires and their severity is fundamental. Radar imagery has an advantage over optical imagery because radar can penetrate clouds, smoke, and rain and can see at night. This research presents algorithms for mapping the severity level of burns based on change detection from Sentinel-1 backscatter data in the southeastern Peruvian Amazon. Absolute, relative, and Radar Forest Degradation Index (RDFI) predictors were used through singular polarization length (dB) patterns (Vertical, Vertical-VV and Horizontal, Horizontal-HH) of vegetation and burned areas. The Composite Burn Index (CBI) determ...

El Lago Sandoval es una de los destinos más populares de la Reserva Nacional Tambopata, en la última década la tendencia de visitas al espacio natural ha sido creciente, atrayendo el último año 51 542 visitantes por temperada (año) entre turistas nacionales y extranjeros (2011= 28 584, 2012= 33 300, 2013= 39435, 2014= 43967, 2015= 45440, y 2016= 51 542 visitas), este aumento en gran medida se debe a la política de marketing emprendida por el gobierno, "Madre de Dios como capital de la biodiversidad del Perú", y ubicarlo como uno de los lugares más conservados del país y la Comunidad Andina. El crecimiento de la actividad turística en la región de Madre de Dios y en especial la Reserva Nacional Tambopata es notable, sin embargo, debe prestar relación con la capacidad óptima que puede soportar el espacio natural, de lo contrario podría generase impactos ambientales irreversi...

La Amazonia occidental, puntualmente la región de Madre de Dios, es la capital de la biodiversidad del Perú y uno de los lugares de mayor biodiversidad del mundo, sin embargo, viene aquejando un serio problema de pérdida de bosque, siendo la causa principal la falta de planificación del territorio, que ocasionan el acaparamiento de tierras, expansión de la frontera agrícola, ganadería, la minería, y la explotación económica descontrolada. Para ello, la investigación plantea analizar la dinámica de la perdida de bosques y los cambios de uso de suelo entre los años 1999-2018. Para la cuantificación de la perdida de bosque se utilizaron técnicas de sensoramiento remoto, imágenes Landsat 5 Thematic Mapper (TM) y 8 Operational Land Imagery (OLI) fueron procesados utilizando una clasificación supervisada denominada Neural Net. La metodología incluyo procedimientos de validaci...

The study analyzes the conservation value of forests assigned to indigenous populations of the Peruvian Amazon: San Jacinto and Puerto Arturo in Madre de Dios, communities with different realities in terms of conservation and forest management. Two scenarios prevail here: The San Jacinto indigenous community with 7 033,98 ha of forest, is characterized by disorder and the development of activities that put the community at risk (gold mining), while Puerto Arturo with 3 731 ha is a community committed to the management and conservation of its resources. By means of the Contingent Valuation Method (CVM) through the dichotomous logit model we try to define the willingness of the individuals to accept compensation (WAC) on proposed prices of a hypothetical scenario. The results show that the average annual WAC to implement the environmental program was S/ 20,46 (USD 6,30) and S/ 14,84 (USD 4...

The study analyzes the conservation value of forests assigned to indigenous populations of the Peruvian Amazon: San Jacinto and Puerto Arturo in Madre de Dios, communities with different realities in terms of conservation and forest management. Two scenarios prevail here: The San Jacinto indigenous community with 7 033,98 ha of forest, is characterized by disorder and the development of activities that put the community at risk (gold mining), while Puerto Arturo with 3 731 ha is a community committed to the management and conservation of its resources. By means of the Contingent Valuation Method (CVM) through the dichotomous logit model we try to define the willingness of the individuals to accept compensation (WAC) on proposed prices of a hypothetical scenario. The results show that the average annual WAC to implement the environmental program was S/ 20,46 (USD 6,30) and S/ 14,84 (USD 4...

Con el objetivo de determinar la ecuación de volumen y factor de forma más adecuado para la estimación del volumen del fuste comercial de Myroxylon balsamum, se muestrearon 120 árboles en los bosques de producción permanente de la provincia de Tahuamanu, en Madre de Dios, Perú. Se calculó el volumen real del fuste comercial de los árboles mediante el método de cubicación rigurosa, midiendo el diámetro a la altura del pecho (DAP) a cada 02 metros de altura, y la altura comercial. El volumen de cada sección fue calculado utilizando la fórmula de Smalian. Posteriormente se calcularon los coeficientes de varias funciones de volumen y los estadísticos de la calidad de ajuste. El factor de forma fue calculado relacionando el volumen real con el volumen del cilindro. Los resultados mostraron que la ecuación de volumen que mejor se ajustó fue la variable combinada generalizada: V...

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...