Biotechnological Potential of Native Microorganisms and Plants for Bioremediation of Gold-Mining Impacted Soils, Morona Santiago: Systematic Review 2020–2025
DOI:
https://doi.org/10.70577/8f366527Keywords:
biochar, biorremediación, fitorremediaciónAbstract
Artisanal and small scale gold mining produces soils and tailings containing mercury Hg and associated metals that impact soil quality soil biota and human exposure pathways within the Amazon. Such a predicament necessitates low impact alternatives capable of diminishing contaminant mobility while eschewing the generation of secondary waste.
This review undertakes the synthesis of evidence published between January 2020 and December 2025 concerning native or acclimatized plants microorganisms and supportive amendments for the bioremediation of gold mining impacted soils and tailings. The aim herein is to appraise applicability for Morona Santiago and delineate the requisite minimum conditions for secure localized validation.
A systematic review employing narrative synthesis methodology was undertaken adhering to PRISMA 2020 guidelines. The audited search commenced on June 7 2026 across Scopus Web of Science ScienceDirect PubMed SciELO LILACS Google Scholar and regional repositories. A grand total of 255 records were initially identified subsequently 45 duplicates were expunged 210 records underwent screening and a refined selection of 28 primary studies was preserved for the principal synthesis.
The primary investigations furnished more robust backing for assisted phytostabilization when the overarching objectives entailed reducing mobility averting erosion and reinstating soil functions. Stronger evidence emerged for the efficacy of tolerant plant species and plant microorganism consortia under controlled environments; however direct application in Amazonian field settings exhibited limited certainty owing to a paucity of seasonal observation and constrained quantification of bioavailable Hg. The primary contribution involves the systematization of existing evidence and the formulation of definitive transfer criteria specifically for the Morona Santiago region.
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References
Zhao, W., Gan, R., Xian, B., Wu, T., Wu, G., Huang, S., et al. (2024). Overview of methylation and demethylation mechanisms and influencing factors of mercury in water. Toxics, 12(10), 715. https://doi.org/10.3390/toxics12100715
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Copyright (c) 2026 Miguel Ángel Osorio Rivera, Sandra Elizabeth López Sampedro, Diego Barzallo (Autor/a)
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