Potential of Tamarix africana and other halophyte species for phytostabilisation of contaminated salt marsh soils

Santos, Erika S.; Abreu, Maria Manuela; Peres, Sara; Magalhães, M. Clara F.; Leitão, Sara; Pereira, Ana Santos; Cerejeira, Maria José

doi:10.1007/s11368-015-1333-x

Cited by 30 publications

(13 citation statements)

References 40 publications

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“…(4.37 mmol/L), Na + (187 mmol/L), Ca 2+ (5.24 mmol/L), and Mg 2+ (22.14 mmol/L) (Table 2) as was to be expected in estuarine water (Santos et al, 2017;Cortinhas et al, 2020).…”

Section: Characterization Of Soils Amendments and Irrigation Watersupporting

confidence: 62%

Conservation of a Critically Endangered Endemic Halophyte of West Portugal: A Microcosm Assay to Assess the Potential of Soil Technology for Species Reintroduction

et al. 2021

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The soil system has been frequently overlooked during plant reintroduction planning and practice since working with soils and plant roots can be difficult, particularly in saline environments. Coastal saline environments are major contributors to regional and global biodiversity and an important source of endemic species. However, various species are in decline or considered threatened, particularly halophytes (salt tolerant) due to negative anthropic impacts. The Lusitanian endemic halophyte Limonium daveaui formerly had a large distribution range along the west coast of Portugal but currently it shows a restricted distribution in the Tagus estuary. Field surveys revealed that this critically endangered species forms few local populations with small size invaded by exotic species. In this study, we investigated the potential utilization of Technosols, an innovative sustainable, ecological engineering method combined with brackish water irrigation for potential L. daveaui reintroduction in native habitats. Seed germination percentages were evaluated in different environmental conditions. Through a microcosm assay, a Technosol was constructed using a saline Fluvisol with a mixture of low value inorganic and organic wastes, which were chemically characterized. Plants were cultivated in the Fluvisol and Technosol and irrigated with brackish water collected in the nearby area. To assess plant growth, morphometric parameters and the plants’ physiological status were assessed and the fresh and dry biomass determined. Results showed that seed germination was higher on moist filter paper with distilled water than in Fluvisol or Technosol. Plants grown in Technosol had a greater development, with higher values of photosynthetic indexes and biomass production than in Fluvisol. Our findings provide a basis for future in situ conservation studies and support the idea that eco-friendly soil technology approaches are beneficial to conserve rare halophyte species.

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“…(4.37 mmol/L), Na + (187 mmol/L), Ca 2+ (5.24 mmol/L), and Mg 2+ (22.14 mmol/L) (Table 2) as was to be expected in estuarine water (Santos et al, 2017;Cortinhas et al, 2020).…”

Section: Characterization Of Soils Amendments and Irrigation Watersupporting

confidence: 62%

Conservation of a Critically Endangered Endemic Halophyte of West Portugal: A Microcosm Assay to Assess the Potential of Soil Technology for Species Reintroduction

et al. 2021

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“…Nowadays, some international business groups and governmental entities from several countries are considering and in some cases (little by little) implementing this new approach in their operational and closure activities. 99,100 Sharing information from case studies where new and integrated approaches are used, including levels of environmental improvements and associated costs, is essential to improving our knowledge of these technologies.…”

Section: Integrated Rehabilitation Of Degraded Areas Using Green Techmentioning

confidence: 99%

Soil Science Challenges in a New Era: A Transdisciplinary Overview of Relevant Topics

Rodrigo‐Comino

López‐Vicente

Kumar³

et al. 2020

Air, Soil and Water Research

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Transdisciplinary approaches that provide holistic views are essential to properly understand soil processes and the importance of soil to society and will be crucial in the future to integrate distinct disciplines into soil studies. A myriad of challenges faces soil science at the beginning of the 2020s. The main aim of this overview is to assess past achievements and current challenges regarding soil threats such as erosion and soil contamination related to different United Nations sustainable development goals (SDGs) including (1) sustainable food production, (2) ensure healthy lives and reduce environmental risks (SDG3), (3) ensure water availability (SDG6), and (4) enhanced soil carbon sequestration because of climate change (SDG13). Twenty experts from different disciplines related to soil sciences offer perspectives on important research directions. Special attention must be paid to some concerns such as (1) effective soil conservation strategies; (2) new computational technologies, models, and in situ measurements that will bring new insights to in-soil process at spatiotemporal scales, their relationships, dynamics, and thresholds; (3) impacts of human activities, wildfires, and climate change on soil microorganisms and thereby on biogeochemical cycles and water relationships; (4) microplastics as a new potential pollutant; (5) the development of green technologies for soil rehabilitation; and (6) the reduction of greenhouse gas emissions by simultaneous soil carbon sequestration and reduction in nitrous oxide emission. Manuscripts on topics such as these are particularly welcomed in Air, Soil and Water Research.

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“…They also recommended Gentiana pennelliana as a good candidate for the phytostabilisation of Pb, Cu, and Zn (BCF = 11, 22, and 2.6, respectively) in polluted sites. Santos et al [ 97 ] reported that the salt marsh non-invasive Tamarix africana helps to stabilise the natural condition of soils, and thus serve as a good phytostabilising agent for saline-contaminated soils. The two main mechanisms of the tolerance in the T. africana were its high excretion of the elements through its salt glands and the relatively low translocation of metals from its roots to the other plant parts.…”

Section: Discussionmentioning

confidence: 99%

Invasive Weed Asystasia gangetica as a Potential Biomonitor and a Phytoremediator of Potentially Toxic Metals: A Case Study in Peninsular Malaysia

Yap

Chew

Al-Mutairi

et al. 2021

IJERPH

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The invasive weed Asystasia gangetica was investigated for its potential as a biomonitor and as a phytoremediator of potentially toxic metals (PTMs) (Cd, Cu, Ni, Pb, and Zn) in Peninsular Malaysia owing to its ecological resistance towards unfavourable environments. The biomonitoring potential of PTMs was determined based on the correlation analysis of the metals in the different parts of the plant (leaves, stems, and roots) and its habitat topsoils. In the roots, the concentrations (mg/kg dry weight) of Cd, Cu, Ni, Pb, and Zn ranged from 0.03 to 2.18, 9.22 to 139, 0.63 to 5.47, 2.43 to 10.5, and 50.7 to 300, respectively. In the leaves, the concentrations (mg/kg dry weight) of Cd, Cu, Ni, Pb, and Zn ranged from 0.03 to 1.16, 7.94 to 20.2, 0.03 to 6.13, 2.10 to 21.8, and 18.8 to 160, respectively. In the stems, the concentrations (mg/kg dry weight) of Cd, Cu, Ni, Pb, and Zn ranged from 0.03 to 1.25, 5.57 to 11.8, 0.23 to 3.69, 0.01 to 7.79, and 26.4 to 246, respectively. On the other hand, the phytoremediation potential of the five metals was estimated based on the bioconcentration factor (BCF) and the translocation factor (TF) values. Correlation analysis revealed that the roots and stems could be used as biomonitors of Cu, the stems as biomonitors of Ni, the roots and leaves as biomonitors of Pb, and all three parts of the plant as biomonitors of Zn. According to the BCF values, in the topsoil, the “easily, freely, leachable, or exchangeable” geochemical fractions of the five metals could be more easily transferred to the roots, leaves, and stems when compared with total concentrations. Based on the TF values of Cd, Ni, and Pb, the metal transfer to the stems (or leaves) from the roots was efficient (>1.0) at most sampling sites. The results of BCF and TF showed that A. gangetica was a good phytoextractor for Cd and Ni, and a good phytostabilizer for Cu, Pb, and Zn. Therefore, A. gangetica is a good candidate as a biomonitor and a phytoremediator of Ni, Pb, and Zn for sustainable contaminant remediation subject to suitable field management strategies.

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Potential of Tamarix africana and other halophyte species for phytostabilisation of contaminated salt marsh soils

Cited by 30 publications

References 40 publications

Conservation of a Critically Endangered Endemic Halophyte of West Portugal: A Microcosm Assay to Assess the Potential of Soil Technology for Species Reintroduction

Conservation of a Critically Endangered Endemic Halophyte of West Portugal: A Microcosm Assay to Assess the Potential of Soil Technology for Species Reintroduction

Soil Science Challenges in a New Era: A Transdisciplinary Overview of Relevant Topics

Invasive Weed Asystasia gangetica as a Potential Biomonitor and a Phytoremediator of Potentially Toxic Metals: A Case Study in Peninsular Malaysia

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