Soil quality indicators to assess functionality of restored soils in degraded semiarid ecosystems

© 2016 Society for Ecological Restoration. A thorough knowledge of soil functionality is critical to successful restoration of disturbed ecosystems, and its evaluation involves the assessment of soil properties and processes as a component of a healthy ecosystem. Here, we propose a set of soil quali...

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Main Authors: Muñoz-Rojas, Miriam, Erickson, T., Dixon, Kingsley, Merritt, D.
Format: Journal Article
Published: Blackwell Science Inc. 2016
Online Access:http://hdl.handle.net/20.500.11937/6144
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author Muñoz-Rojas, Miriam
Erickson, T.
Dixon, Kingsley
Merritt, D.
author_facet Muñoz-Rojas, Miriam
Erickson, T.
Dixon, Kingsley
Merritt, D.
author_sort Muñoz-Rojas, Miriam
building Curtin Institutional Repository
collection Online Access
description © 2016 Society for Ecological Restoration. A thorough knowledge of soil functionality is critical to successful restoration of disturbed ecosystems, and its evaluation involves the assessment of soil properties and processes as a component of a healthy ecosystem. Here, we propose a set of soil quality indicators to assess the soil status in restored soils (topsoil and waste material) and test new methods that are easy to apply, interpret, and cost-effective for the analysis of soil biological indicators in restored ecosystems. We show that in addition to organic carbon and C:N ratio, biological indicators (microbial diversity and activity in particular) are the most sensitive indicators to detect differences among reconstructed soils and analogue undisturbed soils in semiarid areas. The use of the 1-day CO2 test is proven to be an alternative cost- and time-effective method to measure microbial activity and assess soil functionality of restored soils. Our results show a positive effect of vegetation on reconstructed soils and a recovery of soil functionality in waste material to levels similar to topsoil once vegetation is established. However, soil functionality in both restored waste materials and topsoils is still far from that in undisturbed native soils. We conclude that soil functionality is critical in the restoration process, particularly in semiarid areas, and the methods used here could be effectively applied in a broad range of restoration projects in arid and semiarid environments.
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spelling curtin-20.500.11937-61442017-09-13T14:41:02Z Soil quality indicators to assess functionality of restored soils in degraded semiarid ecosystems Muñoz-Rojas, Miriam Erickson, T. Dixon, Kingsley Merritt, D. © 2016 Society for Ecological Restoration. A thorough knowledge of soil functionality is critical to successful restoration of disturbed ecosystems, and its evaluation involves the assessment of soil properties and processes as a component of a healthy ecosystem. Here, we propose a set of soil quality indicators to assess the soil status in restored soils (topsoil and waste material) and test new methods that are easy to apply, interpret, and cost-effective for the analysis of soil biological indicators in restored ecosystems. We show that in addition to organic carbon and C:N ratio, biological indicators (microbial diversity and activity in particular) are the most sensitive indicators to detect differences among reconstructed soils and analogue undisturbed soils in semiarid areas. The use of the 1-day CO2 test is proven to be an alternative cost- and time-effective method to measure microbial activity and assess soil functionality of restored soils. Our results show a positive effect of vegetation on reconstructed soils and a recovery of soil functionality in waste material to levels similar to topsoil once vegetation is established. However, soil functionality in both restored waste materials and topsoils is still far from that in undisturbed native soils. We conclude that soil functionality is critical in the restoration process, particularly in semiarid areas, and the methods used here could be effectively applied in a broad range of restoration projects in arid and semiarid environments. 2016 Journal Article http://hdl.handle.net/20.500.11937/6144 10.1111/rec.12368 Blackwell Science Inc. restricted
spellingShingle Muñoz-Rojas, Miriam
Erickson, T.
Dixon, Kingsley
Merritt, D.
Soil quality indicators to assess functionality of restored soils in degraded semiarid ecosystems
title Soil quality indicators to assess functionality of restored soils in degraded semiarid ecosystems
title_full Soil quality indicators to assess functionality of restored soils in degraded semiarid ecosystems
title_fullStr Soil quality indicators to assess functionality of restored soils in degraded semiarid ecosystems
title_full_unstemmed Soil quality indicators to assess functionality of restored soils in degraded semiarid ecosystems
title_short Soil quality indicators to assess functionality of restored soils in degraded semiarid ecosystems
title_sort soil quality indicators to assess functionality of restored soils in degraded semiarid ecosystems
url http://hdl.handle.net/20.500.11937/6144