Influence of Ecological Restoration on Mercury Mobility and Microbial Activities on Former Guyanese Mining Sites

Autor: Stéphanie Giusti-Miller, Alexandre Livet, Ewan Couic, Vanessa Alphonse, Noureddine Bousserrhine
Přispěvatelé: Géosciences Rennes (GR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Eau Environnement et Systèmes Urbains (LEESU), École des Ponts ParisTech (ENPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Institut d'écologie et des sciences de l'environnement de Paris (iEES Paris ), Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Biogeochemical cycle
Soil texture
media_common.quotation_subject
ecological restoration
mercury mobility
chemistry.chemical_element
010501 environmental sciences
01 natural sciences
lcsh:Technology
lcsh:Chemistry
Environmental protection
microbial activities
biogeochemistry
General Materials Science
Instrumentation
Restoration ecology
lcsh:QH301-705.5
0105 earth and related environmental sciences
media_common
Fluid Flow and Transfer Processes
[SDV.EE]Life Sciences [q-bio]/Ecology
environment
gold mining activities
lcsh:T
Process Chemistry and Technology
General Engineering
Biogeochemistry
04 agricultural and veterinary sciences
Soil quality
lcsh:QC1-999
Computer Science Applications
Mercury (element)
French Guiana
Speciation
chemistry
lcsh:Biology (General)
lcsh:QD1-999
lcsh:TA1-2040
040103 agronomy & agriculture
0401 agriculture
forestry
and fisheries
Environmental science
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
lcsh:Engineering (General). Civil engineering (General)
lcsh:Physics
Potential toxicity
Zdroj: Applied Sciences, Vol 11, Iss 2231, p 2231 (2021)
Applied Sciences
Applied Sciences, 2021, 11 (5), pp.2231. ⟨10.3390/app11052231⟩
Volume 11
Issue 5
ISSN: 2076-3417
Popis: As rehabilitation efforts in Guyana are recent, there is little information on the effect of different ecological rehabilitation protocols for Guyana’s mining sites on biogeochemical cycles and mercury mobility. This study was conducted to assess the impact of different ecological restoration protocols on soil quality with the use of soil microbial indicators and by estimating the mercury mobility. We sampled soil from six rehabilitated mining sites in French Guyana with different ecological restoration procedures. We carried out measurements of enzymatic activities and an analysis of mercury environmental speciation to assess its potential toxicity according to a mobility gradient. The results obtained in this study show that the rehabilitation of mining sites has been carried out in a heterogeneous manner and soil quality is very variable, even in nearby sites. Sites that have been rehabilitated with fabaceous species have positive soil quality indicators. In addition, the results highlight a change in mercury mobility that is 82.1% correlated after co-inertia analysis with soil texture properties, which also confirms a direct effect of rehabilitation on mercury mobility. The non-restored sites had a much higher potential of mercury mobility and toxicity than the sites where ecological restoration was successful. These results highlight the positive effect of controlled rehabilitation and ecological restoration on microbiological activities and the potential toxicity of mercury.
Databáze: OpenAIRE
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