Soil carbon and litter development along a reconstructed biodiverse forest chronosequence of South-Western Australia

George, Suman; Kelly, Robert D.; Greenwood, Paul F.; Tibbett, Mark

doi:10.1007/s10533-010-9519-1

Cited by 25 publications

(20 citation statements)

References 63 publications

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“…George et al . () observed organic matter accumulated in the topsoil with increasing time since restoration, which was a trajectory towards a native soil carbon profile. We found nitrate and phosphorous decreased with age of restoration, which is also consistent with previous trends from the restoration of abandoned pastoral lands (Cunningham et al .…”

Section: Discussionmentioning

confidence: 78%

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Revegetation rewilds the soil bacterial microbiome of an old field

et al. 2017

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Ecological restoration is a globally important and well-financed management intervention used to combat biodiversity declines and land degradation. Most restoration aims to increase biodiversity towards a reference state, but there are concerns that intended outcomes are not reached due to unsuccessful interventions and land-use legacy issues. Monitoring biodiversity recovery is essential to measure success; however, most projects remain insufficiently monitored. Current field-based methods are hard to standardize and are limited in their ability to assess important components of ecosystems, such as bacteria. High-throughput amplicon sequencing of environmental DNA (metabarcoding of eDNA) has been proposed as a cost-effective, scalable and uniform ecological monitoring solution, but its application in restoration remains largely untested. Here we show that metabarcoding of soil eDNA is effective at demonstrating the return of the native bacterial community in an old field following native plant revegetation. Bacterial composition shifted significantly after 8 years of revegetation, where younger sites were more similar to cleared sites and older sites were more similar to remnant stands. Revegetation of the native plant community strongly impacted on the belowground bacterial community, despite the revegetated sites having a long and dramatically altered land-use history (i.e. >100 years grazing). We demonstrate that metabarcoding of eDNA provides an effective way of monitoring changes in bacterial communities that would otherwise go unchecked with conventional monitoring of restoration projects. With further development, awareness of microbial diversity in restoration has significant scope for improving the efficacy of restoration interventions more broadly.

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Section: Discussionmentioning

confidence: 78%

“…The direction of this change was towards the concentrations found at the remnant sites, which appears consistent with a previous study of Jarrah forest restoration in Western Australia (George et al . ). George et al .…”

Section: Discussionmentioning

confidence: 97%

Revegetation rewilds the soil bacterial microbiome of an old field

et al. 2017

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“…Contrary to our hypothesis, we did not observe significant increases of SOM, TC, or TN along with increasing WRP age at each depth. George et al (2010) obtained a slight increasing trend of TC along a restored forest chronosequence in southwestern Australia, although TC contents were not significantly different among restoration ages. The unit of soil carbon in mass was often translated to volume to eliminate the effect of soil management on compaction.…”

Section: Resultsmentioning

confidence: 96%

Soil Change Influenced by Wetlands Reserve Program in Louisiana, USA: A Chronosequence Approach

2012

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Wetlands have many valued ecological functions, yet the impact of the Wetlands Reserve Program (WRP) on soil change, such as carbon dynamics, still remains controversial. Soils from four WRP age classes (8, 12, 15, and 18 yr) and adjacent croplands in St. Landry Parish, Louisiana, USA were sampled by fixed depth (0–10, 10–20, 20–30, and 30–40 cm). Soil physiochemical properties such as bulk density (Db), pH, soil organic matter (SOM), total carbon (TC), total nitrogen (TN), and sand, silt, and clay content were analyzed. Results showed that returning cropland to wetland significantly increased porosity and lowered soil pH. Slight changes in soil texture from silty clay to clay were also noted, but may be a feature of soil spatial variability rather than differences imposed by land use. Linear relationships existed between 0 and 40 cm for content of SOM, TC, or TN and WRP age (P < 0.05), illustrating WRP could benefit carbon and nitrogen sequestration. Sequestration rates of SOM, TC, and TN were 0.305, 0.095, and 0.004 kg m−2 yr−1, respectively. Significant correlation relationships existed among most of these soil properties, suggesting human activities such as wetland restoration may trigger co‐dynamics of properties in the soil system. These findings highlight the potential of WRP in climate change mitigation, and give some suggestions for better soil management in this restoration program.

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“…Currently only anecdotal evidence exists to support this proposition (Tibbett, 2008, Tibbett, 2010and George et al, 2010. George et al (2010) studying the variation in the stable isotopic soil carbon (δ 13 C) signature following de novo establishment of diverse vegetation in post-mined restored landscapes of South-Western Australia revealed that with increasing forest age (productivity) there was a re-establishment of the labile to refractory carbon continuum with soil depth which was comparable to undisturbed native forest (Fig.…”

Section: A Synergistic Approach To Carbon Sequestration and Biodiversitymentioning

confidence: 99%

A sustainable agricultural landscape for Australia: A review of interlacing carbon sequestration, biodiversity and salinity management in agroforestry systems

George

Harper

Hobbs

et al. 2012

Agriculture, Ecosystems & Environment

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Transformation of the south-western Australian landscape from deep-rooted woody vegetation systems to shallow-rooted annual cropping systems has resulted in the severe loss of biodiversity and this loss has been exacerbated by rising ground waters that have mobilised stored salts causing extensive dry land salinity. Since the original plant communities were mostly perennial and deep rooted, the model for sustainable agriculture and landscape water management invariably includes deep rooted trees. Commercial forestry is however only economical in higher rainfall (>700 mm yr −1 ) areas whereas much of the area where biodiversity is threatened has lower rainfall (300-700 mm yr −1 ). Agroforestry may provide the opportunity to develop new agricultural landscapes that interlace ecosystem services such as carbon mitigation via carbon sequestration and biofuels, biodiversity restoration, watershed management while maintaining food production. Active markets are developing for some of these ecosystem services, however a lack of predictive metrics and the regulatory environment are impeding the adoption of several ecosystem services. Nonetheless, a clear opportunity exists for four major issues -the maintenance of food and fibre production, salinisation, biodiversity decline and climate change mitigation -to be managed at a meaningful scale and a new, sustainable agricultural landscape to be developed.

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Soil carbon and litter development along a reconstructed biodiverse forest chronosequence of South-Western Australia

Cited by 25 publications

References 63 publications

Revegetation rewilds the soil bacterial microbiome of an old field

Revegetation rewilds the soil bacterial microbiome of an old field

Soil Change Influenced by Wetlands Reserve Program in Louisiana, USA: A Chronosequence Approach

A sustainable agricultural landscape for Australia: A review of interlacing carbon sequestration, biodiversity and salinity management in agroforestry systems

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