Soil recovery of alluvial gold mine spoils in the Peruvian Amazon using Stylosanthes guianensis, a promising cover crop

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cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationInstituto de Investigaciones de la Amazonía Peruanaen
cg.contributor.affiliationUniversidad Nacional Agraria, La Molinaen
cg.contributor.affiliationUniversidad La Salleen
cg.contributor.affiliationBioversity Internationalen
cg.contributor.crpForests, Trees and Agroforestry
cg.contributor.donorFondo Nacional de Desarrollo Científico y Tecnológico, Chileen
cg.contributor.donorConsejo Nacional de Ciencia, Tecnología e Innovación Tecnológica, Peruen
cg.coverage.countryPeru
cg.coverage.iso3166-alpha2PE
cg.coverage.regionAmericas
cg.coverage.regionSouth America
cg.creator.identifierevert thomas: 0000-0002-7838-6228
cg.identifier.doihttps://doi.org/10.1002/ldr.4118en
cg.isijournalISI Journalen
cg.issn1085-3278en
cg.issue18en
cg.journalLand Degradation and Developmenten
cg.reviewStatusPeer Reviewen
cg.river.basinAMAZONen
cg.subject.alliancebiovciatRESTORATIONen
cg.subject.impactAreaEnvironmental health and biodiversity
cg.subject.sdgSDG 15 - Life on landen
cg.volume32en
dc.contributor.authorVelásquez Ramírez, Manuel Gabrielen
dc.contributor.authorCastillo Torres, Dennis delen
dc.contributor.authorGuerrero Barrantes, Juan Antonioen
dc.contributor.authorVásquez Bardales, Joelen
dc.contributor.authorThomas, Everten
dc.contributor.authorCusi Auca, Edgaren
dc.contributor.authorChinen Gushiken, Midorien
dc.contributor.authorMuñoz Diaz, Betzyen
dc.contributor.authorRusso, Ricardoen
dc.contributor.authorCorvera Gomringer, Ronalden
dc.date.accessioned2021-10-21T09:25:15Zen
dc.date.available2021-10-21T09:25:15Zen
dc.identifier.urihttps://hdl.handle.net/10568/115589
dc.titleSoil recovery of alluvial gold mine spoils in the Peruvian Amazon using Stylosanthes guianensis, a promising cover cropen
dcterms.abstractThe Amazon is an important reservoir of biodiversity and carbon but it is under pressure by multiple threats such as artisanal and small-scale gold mining (ASGM). In Peru ASGM has degraded 90,000 ha of old growth forest since the eighties, leaving vast areas as wastelands. As most ASGM in the region is illegal, efforts to recover degraded areas have been scant. Here we assessed the potential of Stylosanthes guianensis to recover soil health as a first step in the restoration of gold mine spoils in a Native community and a mining concession in Madre de Dios, Peru. We evaluated plant growth and analyzed changes in physical, chemical and biological soil parameters. After 470 days after sowing, average plant height was 46.7 cm with a survival rate > 50% and yields of 23.9 t ha−1 and 450 kg ha−1 of dry biomass and nitrogen, respectively. Multiple soil parameters increased significantly, including cationic exchange capacity (3.3 to 4.0 cmol [+] kg−1), soil organic matter (0.03 to 0.39%), soil respiration (0.02 to 0.06 mg CO2 g−1 d−1) and biomass (0.03 to 0.15 mg C g−1). Soil macrofauna increased from 2 to 11 taxonomic groups, including ants, considered as soil engineers. Furthermore, S. guianensis increased soil carbon sequestration of impacted areas from 0.004 t C ha−1 by more than 1650%, up to 0.07 t C ha−1. These promising findings clearly illustrate S. guianensis potential to kick-start natural succession of Amazonian forests after degradation by ASGM and hence help achieving the Sustainable Development Goals.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.available2021-10-26
dcterms.bibliographicCitationVelásquez Ramírez, M.G.; del Castillo Torres, D.; Guerrero Barrantes, J.A.; Vásquez Bardales, J.; Thomas, E.; Cusi Auca, E.; Chinen Gushiken, M.; Muñoz Diaz, B.; Russo, R.; Corvera Gomringer, R. (2021) Soil recovery of alluvial gold mine spoils in the Peruvian Amazon using Stylosanthes guianensis, a promising cover crop. Land Degradation & Development, Online first paper (03 October 2021). ISSN: 1085-3278en
dcterms.extentpp. 5143-5153en
dcterms.issued2021-12
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherWileyen
dcterms.subjectplant growthen
dcterms.subjectsoil analysisen
dcterms.subjectalluvial soilsen
dcterms.subjectcover plantsen
dcterms.subjectcrecimiento de plantaen
dcterms.subjectanálisis del sueloen
dcterms.subjectsuelo aluvialen
dcterms.subjectdevelopmenten
dcterms.typeJournal Article

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