Browsing by Author "Arellano Ogaz, Eduardo Carlos"
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- ItemBases para el desarrollo de un modelo de rehabilitación forestal en minería utilizando Nothofagus pumilio [Poepp.et Endl] Krasser(2015) Valenzuela, Patricio; Arellano Ogaz, Eduardo Carlos; Burger, James; Zegers, Gabriel; Fernández, Ignacio
- ItemBiochar- and phosphate-induced immobilization of heavy metals in contaminated soil and water: implication on simultaneous remediation of contaminated soil and groundwater(2014) Liang, Y.; Cao, X. D.; Zhao, L.; Arellano Ogaz, Eduardo Carlos
- ItemConstruction and Metabolism of Cultural Landscapes for Sustainability in the Anthropocene(2020) Diego Subercaseaux; Juan Gastó; José Tomás Ibarra; Arellano Ogaz, Eduardo Carlos
- ItemCopper content in soils and litter from fruit orchards in Central Chile and its relationship with soil microbial activity(2022) J. Tomás Schoffer; Humberto Aponte; Alexander Neaman; Luz María de la Fuente; Arellano Ogaz, Eduardo Carlos; Pilar M. Gil; Rosanna Ginocchio
- ItemFertilizantes de entrega controlada: potencial para mejorar la productividad de la reforestación(2004) ROSE, ROBIN; HAASE, DIANE L; Arellano Ogaz, Eduardo Carlos
- ItemLandscape context but not management strategies affects the diversity of native and exotic semi-natural vegetation in Mediterranean agroecosystems of Central Chile(2021) Audrey Alignier; Stephanie Aviron; Ariel A. Farías; Arellano Ogaz, Eduardo Carlos; Marcelo D. Miranda
- ItemSeaweed biochar (sourced from marine water remediation farms) for soil remediation: Towards an integrated approach of terrestrial-coastal marine water remediation(2023) Rosanna Ginocchio; Matías Araya; Jéssica Machado; Luz María de la Fuente; Fabiola Orrego; Arellano Ogaz, Eduardo Carlos; Loretto Contreras-PorciaBiochar made from seaweed biomass of marine farms established for water pollutant remediation may be a promising amendment for soil remediation in the same coastal territory. The study aimed to assess the soil Cu-immobilizing, pH neutralizing, and nutrient improvement capabilities of a seaweed biochar when incorporated into degraded soil of the same coastal territory (Puchuncaví District, central Chile). Experimental design considered five treatments; degraded soil of Puchuncaví valley (C-), C- amended with either local seaweed biochar (B), vermicompost (V), or its mixture (BV), and a background soil (C+). Experimental soils were placed in pots and kept in a greenhouse (4 weeks). Lolium perenne was then sown and cultivated until week 11. Treatments amended with biochar (B and BV) significantly increased soil pH, available nitrogen and decreased Cu2+ ions. These treatments reached very high EC values but had no negative effect on plant yield. Regarding plant growth, V and BV significantly increased biomass, but V resulted in higher yield because of its higher nutritional status. It was concluded that seaweed biochar, made from local seaweed biomass of a coastal marine water pollutant remediation farm, may be an effective soil amendment for degraded soils of the same coastal territory, although its combination with an organic amendment should be considered.
- ItemSoil Vulnerability Indicators to Degradation by Wildfires in Torres del Paine National Park (Patagonia, Chile)(2021) Jorge Mataix-Solera; Arellano Ogaz, Eduardo Carlos; Jorge E. Jaña; Luis Olivares; José Guardiola; Victoria Arcenegui; Minerva García-Carmona; Noelia García-Franco; Patricio ValenzuelaWildfires are a common phenomenon globally, nonetheless some ecosystems are more adapted than others. In this work, we show results of a study conducted in Torres del Paine National Park (Chile) that suffered a big forest fire in 2011, affecting 17,666 ha. The Park is located in the transitional forest-steppe zone whose annual rainfall varies between 300 and 1,500 mm. Plant communities goes from Patagonian steppe, pre-Andean scrub to Magellanic forest. Based on vegetation community and trying to cover all representative sectors affected by the fire, 5 areas of the park were sampled in 2019 following the transects where a vegetation recovery study has been monitored since the fire occurred. Soil parameters used to evaluate were: texture, soil water repellency (WR), organic matter (OM), and aggregation, including total content of macroaggregates (TCA) and their stability (AS). The results showed high values of OM, however three of the 5 areas showed statistically lower values of OM in burned samples. WR was present (from slight to severe) in the 75% of the samples, and without differences between burned and unburned. The correlations analyses indicated that WR is more related with the OM type than with quantity, since better correlations were obtained when only samples from the same area were included in the analyses. The results of aggregation indicated that soils have a poor structural development. The TCA varies from 16 to 50%, and the AS is not very high (average of 66%), being the highest in the area with lowest TCA and more affected by the fire and erosion processes. This suggests that the higher values of AS are a consequence of the destruction and loss of the less resistant fraction after the fire. The combination of the high sand content (low specific surface area) and high OM make them very susceptible to develop WR. Since these soils have a scarce development with a poor structure, the combination of the WR and the poor soil structure make them very vulnerable to erosion processes after the fire. Measures to protect the soils or accelerate the recovery are recommended in these areas when new human caused wildfires could occur.