Natural causes of changes in marine environment: Mercury speciation and distribution in anchialine caves

Kwokal, Željko; Cukrov, Neven; Cuculić, Vlado

doi:10.1016/j.ecss.2014.09.016

Cited by 11 publications

(4 citation statements)

References 40 publications

(42 reference statements)

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“…Relatively few studies have attempted to record the full diversity of microbial communities in anchialine ecosystems [13][14][15], even though these studies resulted in descriptions of new species using novel molecular tools. In the region of the eastern Adriatic Sea, the majority of anchialine ecological studies have been based on the taxonomic research of stygobiotic metazoans [16], the distribution of trace metals [17], and iodine species and nutrients [18]. Technical difficulties in sampling anchialine ecosystems limit the ability to study microbial communities.…”

Section: Introductionmentioning

confidence: 99%

Microeukaryotic and Prokaryotic Diversity of Anchialine Caves from Eastern Adriatic Sea Islands

Kajan

Cukrov

et al. 2021

Microb Ecol

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Anchialine ecosystems in the eastern Adriatic Sea are diverse both morphologically and biologically. In this study, for the first time, we explored the microeukaryotic and prokaryotic community of anchialine caves in the Mediterranean region using high-throughput sequencing. Four anchialine caves located on nearby islands with a well-pronounced salinity gradient were sampled at the surface freshwater area, halocline area, and seawater area. Sequencing revealed a surprisingly wide diversity of the microeukaryotic and prokaryotic community with the relative abundance of major phyla differing within the salinity gradient and between the caves. Interestingly, microeukaryotic and prokaryotic communities clustered into four groups based on location, pointing out that sampled anchialine caves have different microbial community patterns and high microbial endemism. Our results indicate that even with the halocline acting as a selecting barrier, the salinity is not the only community structuring factor. Despite the short geographical distance, the isolation of anchialine caves facilitated high microbial community adaptation and endemism. Our study suggests that anchialine caves represent reservoirs of new biodiversity, maintaining unique and complex microbial diversity influenced by biotic interactions and abiotic environmental conditions.

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Section: Introductionmentioning

confidence: 99%

Microeukaryotic and Prokaryotic Diversity of Anchialine Caves from Eastern Adriatic Sea Islands

Kajan

Cukrov

et al. 2021

Microb Ecol

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“…Classical and genomic-taxonomic descriptions have further cataloged the macro and microbiota inhabiting the anchialine environment (Yager, 1987(Yager, , 1994Alcocer et al, 1999;Seymour et al, 2007;Martinez-García et al, 2009;Humphreys et al, 2012;Hoenemann et al, 2013). Geochemical and stable isotope-based studies have described the carbon cycle (Pohlman et al, 1997), nutrient dynamics (Moore, 1999), iodine speciation (Žic et al, 2008), trace metal cycles (Cuculić et al, 2011;Kwokal et al, 2014) and the general (Iliffe,Fig. 1.…”

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confidence: 99%

‘Anchialine’ redefined as a subterranean estuary in a crevicular or cavernous geological setting

Bishop

Humphreys

Cukrov

et al. 2015

Journal of Crustacean Biology

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An improved understanding of the anchialine ecosystem and geology warrants a redefinition of the term 'anchialine.' Originating from subareal biological observations, the term anchialine now encompasses chemical, physical, geological and biological elements within the subterranean realm. We propose a more accurate definition of the term anchialine as 'a tidally-influenced subterranean estuary located within crevicular and cavernous karst and volcanic terrains that extends inland to the limit of seawater penetration.' This subterranean estuary is characterized by sharp physical and chemical stratification and merges with a marine system at the coast and a groundwater system inland. The anchialine ecosystem supports a relatively diverse biotic assemblage of stygobiotic species of marine origin dominated by members of Crustacea, both numerically and by species richness.

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“…Mercury produced by coal combustion mainly exists in three forms: zero-valent element mercury (Hg 0 ), divalent mercury (Hg 2+ ), and particulate-bound mercury (Hg p ). − We can use a wet flue gas desulfurization (WFGD) system to remove divalent mercury effectively, and dust collectors such as an electrostatic precipitator (ESP) or a bag filter (FF) can be used to capture particulate-bound mercury . However, zero-valent mercury is extremely difficult to remove and can exist in the atmosphere for 1–2 years.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a Z-Scheme Heterojunction Polyhedral-Shaped BiOIO₃/MIL-53(Fe) Photocatalyst for Enhancing Gaseous Hg⁰ Removal

Guo

Guan

et al. 2021

Energy Fuels

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A Z-scheme heterojunction polyhedral-shaped BiOIO 3 /MIL-53(Fe) photocatalyst is prepared by a solvothermal method. The samples are characterized by XRD, XPS, SEM, TEM, FT-IR, UV−vis, PL, and other material characterization analysis methods. The photocatalytic performance of photocatalysts is studied for removal of vapor-phase mercury (Hg 0 ) under visiblelight irradiation. The results suggest that the Hg 0 removal efficiency of the BiOIO 3 /MIL-53(Fe) composite is significantly improved compared with that of . When the molar ratio of BiOIO 3 and MIL-53(Fe) is 2:1, the BiOIO 3 /MIL-53(Fe) composite photocatalyst exhibits the best Hg 0 removal efficiency, reaching 74.19%. BiOIO 3 and MIL-53(Fe) form a Z-scheme heterojunction with a suitable energy band structure, which results in the effective separation of photoinduced electron−hole pairs and delays their recombination. Finally, the photocatalytic oxidation mechanism of Hg 0 by the BiOIO 3 /MIL-53(Fe) composite is proposed, which paves the way for the study of the built-in electric field and electron transport channels between binary photocatalyst materials.

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Natural causes of changes in marine environment: Mercury speciation and distribution in anchialine caves

Cited by 11 publications

References 40 publications

Microeukaryotic and Prokaryotic Diversity of Anchialine Caves from Eastern Adriatic Sea Islands

Microeukaryotic and Prokaryotic Diversity of Anchialine Caves from Eastern Adriatic Sea Islands

‘Anchialine’ redefined as a subterranean estuary in a crevicular or cavernous geological setting

Fabrication of a Z-Scheme Heterojunction Polyhedral-Shaped BiOIO₃/MIL-53(Fe) Photocatalyst for Enhancing Gaseous Hg⁰ Removal

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Natural causes of changes in marine environment: Mercury speciation and distribution in anchialine caves

Cited by 11 publications

References 40 publications

Microeukaryotic and Prokaryotic Diversity of Anchialine Caves from Eastern Adriatic Sea Islands

Microeukaryotic and Prokaryotic Diversity of Anchialine Caves from Eastern Adriatic Sea Islands

‘Anchialine’ redefined as a subterranean estuary in a crevicular or cavernous geological setting

Fabrication of a Z-Scheme Heterojunction Polyhedral-Shaped BiOIO3/MIL-53(Fe) Photocatalyst for Enhancing Gaseous Hg0 Removal

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Fabrication of a Z-Scheme Heterojunction Polyhedral-Shaped BiOIO₃/MIL-53(Fe) Photocatalyst for Enhancing Gaseous Hg⁰ Removal