Mangrove soil: A potential contamination source to estuarine ecosystems of Australia

Lin, Chiao-Wen; Melville, M. D.

doi:10.31646/wa.149

Cited by 16 publications

(1 citation statement)

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“…Furthermore, those coal-forming and root tracebearing materials in the palaeosols might be considered to be marine mangrove-like plants (Shao et al 1998), which are integral and active components of the coastal landscape (McKee et al 2007) and key indicators of plant growth in acid-sulfate soils (Nguyen et al 2000). Pyrite-bearing claystone derived from the deposition of intertidal sediments (Lin & Melville, 1992Ritsema & Groenenberg, 1993) can form rapidly in coastal sedimentary settings owing to the reaction between sulfides and iron oxyhydroxides (Fanning et al 2002). These palaeoweathering crusts situated in the southwest of the Yangtze Plate, which were situated in the eastern palaeo-Tethys around the equator during Middle-Late Permian times (Wang & Jin, 2000) (Fig.…”

Section: B Upper Middle Permian Palaeosol Distribution In Sw Chinamentioning

confidence: 99%

Sea-level fluctuations in the late Middle Permian estimated from palaeosols of the Sichuan Basin, SW China

Han

Wen

et al. 2020

Geol. Mag.

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Two upper Middle Permian palaeosols, consisting of coal and pyrite intercalated with a 20 cm thick limestone, were found near Mount Emei in the SW Sichuan Basin, China. The macro- and micromorphology and physico-chemical properties, in conjunction with the mineralogical composition of the palaeosol horizons were investigated. This type of palaeosol is common within the Permian intertidal facies of the Upper Yangtze Craton. The section reflects fluctuations within the range of 0–25 m in relative sea-level, with the depositional environment changing from shallow-marine to littoral, followed by tidal-flat to littoral, and finally to continental volcanic rocks, based on a combination of palaeopedological and carbonate microfacies analyses. Such short-term relative sea-level fluctuations in late Middle Permian times in the SW Sichuan Basin of South China are consistent with the long-term falling trend on a global scale in late Middle Permian times, and may be related to regionally variable subsidence and global cooling. The combination of coastal palaeosol and carbonate microfacies analyses is proposed as an additional tool for estimating the amplitude of sea-level changes.

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Section: B Upper Middle Permian Palaeosol Distribution In Sw Chinamentioning

confidence: 99%

Sea-level fluctuations in the late Middle Permian estimated from palaeosols of the Sichuan Basin, SW China

Han

Wen

et al. 2020

Geol. Mag.

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Phosphorus geochemistry in a Brazilian semiarid mangrove soil affected by shrimp farm effluents

Nóbrega

Otero

Macı́as

et al. 2014

Environ Monit Assess

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Wastewater discharge from shrimp farming is one of the main causes of eutrophication in mangrove ecosystems. We investigated the phosphorus (P) geochemistry in mangrove soils affected by shrimp farming effluents by carrying out a seasonal study of two mangrove forests (a control site (CS); a site affected by shrimp farm effluents (SF)). We determined the soil pH, redox potential (Eh), total organic carbon (TOC), total phosphorus (TP), and dissolved P. We also carried out sequential extraction of the P-solid phases. In SF, the effluents affected the soil physicochemical conditions, resulting in lower Eh and higher pH, as well as lower TOC and higher TP than in CS. Organic P forms were dominant in both sites and seasons, although to a lesser extent in SF. The lower TOC in SF was related to the increased microbial activity and organic matter decomposition caused by fertilization. The higher amounts of P oxides in SF suggest that the effluents alter the dominance of iron and sulfate reduction in mangrove soils, generating more reactive Fe that is available for bonding to phosphates. Strong TP losses were recorded in both sites during the dry season, in association with increased amounts of exchangeable and dissolved P. The higher bioavailability of P during the dry season may be attributed to increased mineralization of organic matter and dissolution of Ca-P in response to more oxidizing and acidic conditions. The P loss has significant environmental implications regarding eutrophication and marine productivity.

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Blue carbon in coastal landscapes: a spatial framework for assessment of stocks and additionality

et al. 2018

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Mangrove soil: A potential contamination source to estuarine ecosystems of Australia

Cited by 16 publications

References 0 publications

Sea-level fluctuations in the late Middle Permian estimated from palaeosols of the Sichuan Basin, SW China

Sea-level fluctuations in the late Middle Permian estimated from palaeosols of the Sichuan Basin, SW China

Phosphorus geochemistry in a Brazilian semiarid mangrove soil affected by shrimp farm effluents

Blue carbon in coastal landscapes: a spatial framework for assessment of stocks and additionality

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