Effects of ultramafic topsoil stockpiling during mine activities on its microbial diversity and other microbiological and physicochemical characteristics
Nowadays, ecological restoration is considered the best solution for the rehabilitation of mining-degraded areas, particularly when it concerns valuable ecosystems. This is the case in New Caledonia, a hot spot of biodiversity, with 82% of endemic plant species in ultramafic soils. The use of topsoil to restore mined areas is an important practice. However, topsoil stockpiling can reduce soil fertility. We studied the evolution of different properties of two topsoils stored in 10 m height piles on mined areas, in order to characterize possible degradations. The effects of storage duration, depth, and topsoil origin were analyzed, focusing mainly on bacterial and fungal diversity assessed after bar-coded pyrosequencing, and expressed by operational taxonomic units (OTU). Microbial activity (carbon dioxyde production), arbuscular mycorrhizal fungi (AMF) spore numbers, bulk density and different other physicochemical characteristics were also determined. The studied ultramafic soils were characterized by a relatively high microbial diversity with 45 bacterial phyla and 7 fungal phyla. Bacterial and fungal OTU numbers did not vary significantly after 12 months of storage, but the community structures of these groups were changed. AMF diversity was significantly reduced by the storage. Microbial activity, AMF spore numbers, soil organic carbon, total nitrogen, cation exchange capacity, and carbon to nitrogen ratio (C/N) decreased significantly starting from 3 to 9 months of topsoil storage. In contrast, soil bulk density and pH increased, and extractable concentrations of potentially toxic metals varied only slightly. All the changes induced by topsoil stockpiling in microbial population structure, AMF diversity, and other biotic and abiotic traits may negatively affect soil functions and create perturbations of the reconstructed ecosystems after revegetation. It is then necessary to reduce the storage of ultramafic topsoils as far as possible. In all cases, the stockpiling should not exceed six months before its use in ecosystem restoration. It is also recommended to reduce the height of the stockpiles, when possible, to 1 m or less to minimize the compaction and the anaerobiosis.
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dig-cirad-fr-606406 |
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Francia |
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Europa del Oeste |
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Biblioteca del CIRAD Francia |
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eng |
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P34 - Biologie du sol P33 - Chimie et physique du sol P36 - Érosion, conservation et récupération des sols écologie microbienne microbiologie biodiversité biologie du sol physique du sol restauration couverture végétale restauration environnementale chimie du sol bactérie du sol caractéristiques du sol diversité microbienne http://aims.fao.org/aos/agrovoc/c_24111 http://aims.fao.org/aos/agrovoc/c_4800 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_14400 http://aims.fao.org/aos/agrovoc/c_26815 http://aims.fao.org/aos/agrovoc/c_1fd01672 http://aims.fao.org/aos/agrovoc/c_7161 http://aims.fao.org/aos/agrovoc/c_34c44dd1 http://aims.fao.org/aos/agrovoc/c_330883 http://aims.fao.org/aos/agrovoc/c_7f962590 http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 P34 - Biologie du sol P33 - Chimie et physique du sol P36 - Érosion, conservation et récupération des sols écologie microbienne microbiologie biodiversité biologie du sol physique du sol restauration couverture végétale restauration environnementale chimie du sol bactérie du sol caractéristiques du sol diversité microbienne http://aims.fao.org/aos/agrovoc/c_24111 http://aims.fao.org/aos/agrovoc/c_4800 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_14400 http://aims.fao.org/aos/agrovoc/c_26815 http://aims.fao.org/aos/agrovoc/c_1fd01672 http://aims.fao.org/aos/agrovoc/c_7161 http://aims.fao.org/aos/agrovoc/c_34c44dd1 http://aims.fao.org/aos/agrovoc/c_330883 http://aims.fao.org/aos/agrovoc/c_7f962590 http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 |
spellingShingle |
P34 - Biologie du sol P33 - Chimie et physique du sol P36 - Érosion, conservation et récupération des sols écologie microbienne microbiologie biodiversité biologie du sol physique du sol restauration couverture végétale restauration environnementale chimie du sol bactérie du sol caractéristiques du sol diversité microbienne http://aims.fao.org/aos/agrovoc/c_24111 http://aims.fao.org/aos/agrovoc/c_4800 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_14400 http://aims.fao.org/aos/agrovoc/c_26815 http://aims.fao.org/aos/agrovoc/c_1fd01672 http://aims.fao.org/aos/agrovoc/c_7161 http://aims.fao.org/aos/agrovoc/c_34c44dd1 http://aims.fao.org/aos/agrovoc/c_330883 http://aims.fao.org/aos/agrovoc/c_7f962590 http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 P34 - Biologie du sol P33 - Chimie et physique du sol P36 - Érosion, conservation et récupération des sols écologie microbienne microbiologie biodiversité biologie du sol physique du sol restauration couverture végétale restauration environnementale chimie du sol bactérie du sol caractéristiques du sol diversité microbienne http://aims.fao.org/aos/agrovoc/c_24111 http://aims.fao.org/aos/agrovoc/c_4800 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_14400 http://aims.fao.org/aos/agrovoc/c_26815 http://aims.fao.org/aos/agrovoc/c_1fd01672 http://aims.fao.org/aos/agrovoc/c_7161 http://aims.fao.org/aos/agrovoc/c_34c44dd1 http://aims.fao.org/aos/agrovoc/c_330883 http://aims.fao.org/aos/agrovoc/c_7f962590 http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 Amir, Hamid Bordez, Laurent Cavaloc, Yvon Jourand, Philippe Ducousso, Marc Juillot, Farid Effects of ultramafic topsoil stockpiling during mine activities on its microbial diversity and other microbiological and physicochemical characteristics |
description |
Nowadays, ecological restoration is considered the best solution for the rehabilitation of mining-degraded areas, particularly when it concerns valuable ecosystems. This is the case in New Caledonia, a hot spot of biodiversity, with 82% of endemic plant species in ultramafic soils. The use of topsoil to restore mined areas is an important practice. However, topsoil stockpiling can reduce soil fertility. We studied the evolution of different properties of two topsoils stored in 10 m height piles on mined areas, in order to characterize possible degradations. The effects of storage duration, depth, and topsoil origin were analyzed, focusing mainly on bacterial and fungal diversity assessed after bar-coded pyrosequencing, and expressed by operational taxonomic units (OTU). Microbial activity (carbon dioxyde production), arbuscular mycorrhizal fungi (AMF) spore numbers, bulk density and different other physicochemical characteristics were also determined. The studied ultramafic soils were characterized by a relatively high microbial diversity with 45 bacterial phyla and 7 fungal phyla. Bacterial and fungal OTU numbers did not vary significantly after 12 months of storage, but the community structures of these groups were changed. AMF diversity was significantly reduced by the storage. Microbial activity, AMF spore numbers, soil organic carbon, total nitrogen, cation exchange capacity, and carbon to nitrogen ratio (C/N) decreased significantly starting from 3 to 9 months of topsoil storage. In contrast, soil bulk density and pH increased, and extractable concentrations of potentially toxic metals varied only slightly. All the changes induced by topsoil stockpiling in microbial population structure, AMF diversity, and other biotic and abiotic traits may negatively affect soil functions and create perturbations of the reconstructed ecosystems after revegetation. It is then necessary to reduce the storage of ultramafic topsoils as far as possible. In all cases, the stockpiling should not exceed six months before its use in ecosystem restoration. It is also recommended to reduce the height of the stockpiles, when possible, to 1 m or less to minimize the compaction and the anaerobiosis. |
format |
article |
topic_facet |
P34 - Biologie du sol P33 - Chimie et physique du sol P36 - Érosion, conservation et récupération des sols écologie microbienne microbiologie biodiversité biologie du sol physique du sol restauration couverture végétale restauration environnementale chimie du sol bactérie du sol caractéristiques du sol diversité microbienne http://aims.fao.org/aos/agrovoc/c_24111 http://aims.fao.org/aos/agrovoc/c_4800 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_14400 http://aims.fao.org/aos/agrovoc/c_26815 http://aims.fao.org/aos/agrovoc/c_1fd01672 http://aims.fao.org/aos/agrovoc/c_7161 http://aims.fao.org/aos/agrovoc/c_34c44dd1 http://aims.fao.org/aos/agrovoc/c_330883 http://aims.fao.org/aos/agrovoc/c_7f962590 http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Amir, Hamid Bordez, Laurent Cavaloc, Yvon Jourand, Philippe Ducousso, Marc Juillot, Farid |
author_facet |
Amir, Hamid Bordez, Laurent Cavaloc, Yvon Jourand, Philippe Ducousso, Marc Juillot, Farid |
author_sort |
Amir, Hamid |
title |
Effects of ultramafic topsoil stockpiling during mine activities on its microbial diversity and other microbiological and physicochemical characteristics |
title_short |
Effects of ultramafic topsoil stockpiling during mine activities on its microbial diversity and other microbiological and physicochemical characteristics |
title_full |
Effects of ultramafic topsoil stockpiling during mine activities on its microbial diversity and other microbiological and physicochemical characteristics |
title_fullStr |
Effects of ultramafic topsoil stockpiling during mine activities on its microbial diversity and other microbiological and physicochemical characteristics |
title_full_unstemmed |
Effects of ultramafic topsoil stockpiling during mine activities on its microbial diversity and other microbiological and physicochemical characteristics |
title_sort |
effects of ultramafic topsoil stockpiling during mine activities on its microbial diversity and other microbiological and physicochemical characteristics |
url |
http://agritrop.cirad.fr/606406/ http://agritrop.cirad.fr/606406/1/ID606406.pdf |
work_keys_str_mv |
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dig-cirad-fr-6064062024-09-06T14:13:15Z http://agritrop.cirad.fr/606406/ http://agritrop.cirad.fr/606406/ Effects of ultramafic topsoil stockpiling during mine activities on its microbial diversity and other microbiological and physicochemical characteristics. Amir Hamid, Bordez Laurent, Cavaloc Yvon, Jourand Philippe, Ducousso Marc, Juillot Farid. 2022. Ecological Engineering, 177:106563, 11 p.https://doi.org/10.1016/j.ecoleng.2022.106563 <https://doi.org/10.1016/j.ecoleng.2022.106563> Effects of ultramafic topsoil stockpiling during mine activities on its microbial diversity and other microbiological and physicochemical characteristics Amir, Hamid Bordez, Laurent Cavaloc, Yvon Jourand, Philippe Ducousso, Marc Juillot, Farid eng 2022 Ecological Engineering P34 - Biologie du sol P33 - Chimie et physique du sol P36 - Érosion, conservation et récupération des sols écologie microbienne microbiologie biodiversité biologie du sol physique du sol restauration couverture végétale restauration environnementale chimie du sol bactérie du sol caractéristiques du sol diversité microbienne http://aims.fao.org/aos/agrovoc/c_24111 http://aims.fao.org/aos/agrovoc/c_4800 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_14400 http://aims.fao.org/aos/agrovoc/c_26815 http://aims.fao.org/aos/agrovoc/c_1fd01672 http://aims.fao.org/aos/agrovoc/c_7161 http://aims.fao.org/aos/agrovoc/c_34c44dd1 http://aims.fao.org/aos/agrovoc/c_330883 http://aims.fao.org/aos/agrovoc/c_7f962590 Nouvelle-Calédonie France http://aims.fao.org/aos/agrovoc/c_5155 http://aims.fao.org/aos/agrovoc/c_3081 Nowadays, ecological restoration is considered the best solution for the rehabilitation of mining-degraded areas, particularly when it concerns valuable ecosystems. This is the case in New Caledonia, a hot spot of biodiversity, with 82% of endemic plant species in ultramafic soils. The use of topsoil to restore mined areas is an important practice. However, topsoil stockpiling can reduce soil fertility. We studied the evolution of different properties of two topsoils stored in 10 m height piles on mined areas, in order to characterize possible degradations. The effects of storage duration, depth, and topsoil origin were analyzed, focusing mainly on bacterial and fungal diversity assessed after bar-coded pyrosequencing, and expressed by operational taxonomic units (OTU). Microbial activity (carbon dioxyde production), arbuscular mycorrhizal fungi (AMF) spore numbers, bulk density and different other physicochemical characteristics were also determined. The studied ultramafic soils were characterized by a relatively high microbial diversity with 45 bacterial phyla and 7 fungal phyla. Bacterial and fungal OTU numbers did not vary significantly after 12 months of storage, but the community structures of these groups were changed. AMF diversity was significantly reduced by the storage. Microbial activity, AMF spore numbers, soil organic carbon, total nitrogen, cation exchange capacity, and carbon to nitrogen ratio (C/N) decreased significantly starting from 3 to 9 months of topsoil storage. In contrast, soil bulk density and pH increased, and extractable concentrations of potentially toxic metals varied only slightly. All the changes induced by topsoil stockpiling in microbial population structure, AMF diversity, and other biotic and abiotic traits may negatively affect soil functions and create perturbations of the reconstructed ecosystems after revegetation. It is then necessary to reduce the storage of ultramafic topsoils as far as possible. In all cases, the stockpiling should not exceed six months before its use in ecosystem restoration. It is also recommended to reduce the height of the stockpiles, when possible, to 1 m or less to minimize the compaction and the anaerobiosis. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/606406/1/ID606406.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.ecoleng.2022.106563 10.1016/j.ecoleng.2022.106563 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecoleng.2022.106563 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.ecoleng.2022.106563 |