Implication of plant-soil relationships for conservation and restoration of copper-cobalt ecosystems

Faucon, Michel‐Pierre; Stradic, Soizig Le; Boisson, Sylvain; Ilunga, Edouard Ilunga wa; Séleck, Maxime; Lange, Bastien; Delhaye, Guillaume; Shutcha, Mylor Ngoy; Pourret, Olivier; Meerts, Pierre Jacques; Mahy, Grégory

doi:10.1007/s11104-015-2745-5

Cited by 30 publications

(24 citation statements)

References 60 publications

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“…Still, many other diverse and threatened tropical grasslands are not classified as biodiversity hotspots and receive little conservation attention. Examples of under‐recognised grasslands include: Southern African Montane Grasslands, Guianan Lowland Grasslands and Savannas (Mittermeier et al ., ; Dixon et al ., ), Southern Central Africa edaphic grasslands (Faucon et al ., ), subtropical grasslands of southern Brazil (Overbeck et al ., ), subtropical savannas of North America (Noss et al ., ), and savannas of India and southeast Asia (Ratnam et al ., ). Unfortunately, even with better recognition, we should not expect classification of more grasslands as biodiversity hotspots to halt conversion for agriculture (Machado et al ., ; Carvalho, De Marco & Ferreira, ) or prevent forest expansion (e.g.…”

Section: Introductionmentioning

confidence: 99%

Resilience and restoration of tropical and subtropical grasslands, savannas, and grassy woodlands

et al. 2018

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Despite growing recognition of the conservation values of grassy biomes, our understanding of how to maintain and restore biodiverse tropical grasslands (including savannas and open‐canopy grassy woodlands) remains limited. To incorporate grasslands into large‐scale restoration efforts, we synthesised existing ecological knowledge of tropical grassland resilience and approaches to plant community restoration. Tropical grassland plant communities are resilient to, and often dependent on, the endogenous disturbances with which they evolved – frequent fires and native megafaunal herbivory. In stark contrast, tropical grasslands are extremely vulnerable to human‐caused exogenous disturbances, particularly those that alter soils and destroy belowground biomass (e.g. tillage agriculture, surface mining); tropical grassland restoration after severe soil disturbances is expensive and rarely achieves management targets. Where grasslands have been degraded by altered disturbance regimes (e.g. fire exclusion), exotic plant invasions, or afforestation, restoration efforts can recreate vegetation structure (i.e. historical tree density and herbaceous ground cover), but species‐diverse plant communities, including endemic species, are slow to recover. Complicating plant‐community restoration efforts, many tropical grassland species, particularly those that invest in underground storage organs, are difficult to propagate and re‐establish. To guide restoration decisions, we draw on the old‐growth grassland concept, the novel ecosystem concept, and theory regarding tree cover along resource gradients in savannas to propose a conceptual framework that classifies tropical grasslands into three broad ecosystem states. These states are: (1) old‐growth grasslands (i.e. ancient, biodiverse grassy ecosystems), where management should focus on the maintenance of disturbance regimes; (2) hybrid grasslands, where restoration should emphasise a return towards the old‐growth state; and (3) novel ecosystems, where the magnitude of environmental change (i.e. a shift to an alternative ecosystem state) or the socioecological context preclude a return to historical conditions.

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Section: Introductionmentioning

confidence: 99%

Resilience and restoration of tropical and subtropical grasslands, savannas, and grassy woodlands

et al. 2018

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“…Globally, open‐pit‐mining activities affect the existing geochemical, biological, and hydrological systems of an area and also create severe land degradation, which negatively affects vegetation and soil quality (Cross, Stevens, & Dixon, ; Faucon et al, ). Vegetation and soil provide many essential ecosystem services for humans.…”

Section: Introductionmentioning

confidence: 99%

Selection of suitable species as a key factor for vegetation restoration of degraded areas in an open‐pit manganese‐ore mine in Southern China using multivariate‐analysis methods

et al. 2019

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Open‐pit mining results in large amounts of degraded lands that require ecological recovery. Adequate‐species selection for ecological recovery is of great importance. In this study, field investigations along the disturbance gradients (marginal area, restoration area, and control area) in a manganese ore deposit of Guangxi in Southern China were carried out. We screened the adequate species from two aspects. In the marginal area, the result of corrected Akaike information criterion revealed that Mn was the most important soil parameter affecting vegetation diversity. Cyclosorus parasiticus (L.) Farwell., Setaria viridis (L.) Beauv., Mimosa sepiaria Benth., and Bidens pilosa L. were selected for their abilities to adapt to high‐Mn‐content soils. In the restoration area and control area, we combined important values and field performance (Dickson quality index, DQI) of species to select adequate species. Miscanthus sinensis Anderss. and Arundinella hirta (Thunb.) Tanaka were selected using the similar DQI (p > 0.05) in both areas. In summary, C. parasiticus (L.) Farwell., S. viridis (L.) Beauv., M. sinensis Anderss., and A. hirta (Thunb.) Tanaka were selected as adequate species because of their high potential to adapt to these disturbed sites. Our results and methodology could have a demonstrating effect for restoration programmes in manganese ore mining areas of China.

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“…However, mining activity may cause environmental problems associated to the degradation of ecosystems and the contamination of the environment with potentially toxic elements, such as radionuclides, metals, and metalloids . Mining activities are also known to represent a serious threat for plant communities in metalliferous regions, which embrace some important plant diversity hotspots that need conservation strategies . Metals and metalloids, subsequently referred to as metal(oid)s, from mining tailings represent a set of chemicals that can be extremely polluting and cause health complications in humans and animals thus the entrance of these toxic elements into the food chain is a great concern .…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation Potential of Jack Bean Plant for Multi‐Element Contaminated Soils From Ribeira Valley, Brazil

Silva

Andrade

Campos

2018

CLEAN Soil Air Water

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Soil contamination with metal(oid)s is of concern due to deleterious effects on ecosystems, plants, and human health. This study aims at determining the potential of jack bean, Canavalia ensiformis, to be used as phytoremediator of soils contaminated with Pb, Zn, and As from past mining activities in the Ribeira Valley, Brazil. A pot experiment is conducted using soils collected from two areas contaminated with different concentrations of Pb, As, and Zn. Only in the most contaminated soil, elemental concentrations are above the limit established for agricultural purposes by Brazilian regulatory agencies. Plant tolerance is evaluated in terms of growth, elemental accumulation, establishment of root symbiosis, and biochemical indicators of metal toxicity. Plants are able to produce high biomass without signs of oxidative stress. The content of free amino acids in leaves increases when plants grown in the soil with higher metal(oid) concentrations indicating changes in physiology. Mycorrhizal symbiosis is established; however, nodulation with native rhizobia is strongly inhibited in the most contaminated soil. Jack bean roots act as a barrier to translocation retaining most of the absorbed metals, especially for Pb. The translocation index for Zn and As is higher than for Pb. In conclusion, jack bean plant can be considered of interest for phytostabilization of multi‐element contaminated soils due to its high capacity for immobilizing potentially toxic elements in roots. Although Zn and As are more mobile and accumulate in concentration levels above phytotoxicity thresholds, C. ensiformis is a tolerant species.

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Implication of plant-soil relationships for conservation and restoration of copper-cobalt ecosystems

Abstract: 22Background: Chemical soil factors play an important role in generating and maintaining plant diversity.

Cited by 30 publications

References 60 publications

Resilience and restoration of tropical and subtropical grasslands, savannas, and grassy woodlands

Resilience and restoration of tropical and subtropical grasslands, savannas, and grassy woodlands

Selection of suitable species as a key factor for vegetation restoration of degraded areas in an open‐pit manganese‐ore mine in Southern China using multivariate‐analysis methods

Phytoremediation Potential of Jack Bean Plant for Multi‐Element Contaminated Soils From Ribeira Valley, Brazil

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