Mercury Distribution in a Mangrove Tidal Creek Affected by Intensive Shrimp Farming

Costa, Breno Gustavo Bezerra; Soares, Talita M.; Torres, Rodriguez; Lacerda, Luiz Drude de

doi:10.1007/s00128-012-0957-4

Cited by 25 publications

(13 citation statements)

References 13 publications

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“…In an attempt to determine the distribution of Hg in creek waters receiving effluents from shrimp farms in the lower Jaguaribe River, Costa et al (2013) found lower Hg-D concentrations (3.1-9.2 ng l −1 ) but higher Hg-P (4.4-9.4 ng l −1 ) levels than were found in the present study, likely due to the much higher TSS content in the creek waters compared with the Castanhão Reservoir. Lacerda et al (2013) also found lower concentrations of Hg-D in the Jaguaribe River proper (0.3-3.8 ng l −1 ) and noted slightly higher Hg concentrations in the TSS (13.1-129.8 ng g −1 ).…”

Section: Estimated An Emissioncontrasting

confidence: 79%

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Emission factor and balance of mercury in fish farms in an artificial reservoir in NE Brazil

Oliveira

Lacerda

Peres

et al. 2015

Environ Sci Pollut Res

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This paper estimated the mercury (Hg), emission factor, and mass balance from caged fish farming in the Castanhão Reservoir, NE Brazil, based on monitoring of a typical farm of Nile tilapia (Oreochromis niloticus). The total Hg input to the farm reached 1.45 gHg ha(-1) year(-1), from which 0.21 gHg ha(-1) year(-1) was exported out as fish biomass, ultimately resulting in an emission factor of 1.24 gHg ha(-1) year(-1) for the reservoir or approximately 8.27 mgHg ton fish(-1) year(-1) produced. Most of the input came from aquafeeds with concentrations varying from 1.4 to 31.1 ng g(-1), depending on the type of aquafeed. The Hg concentrations in fish were very low and varied from 1.0 to 2.9 ng g(-1). These values are two orders of magnitude lower than the legal limit for human consumption. The estimated total annual discharge of Hg from farming into the reservoir is 174 g for 18,000 tons of fish produced and may reach 387 g when the reservoir reaches its total capacity (40,000 tons), which is expected to occur in 2020. The mass balance, considering the deposition and accumulation rates, showed that approximately 40% of the total Hg input accumulate in farm sediments (0.72 g ha(-1) year(-1)), which is approximately 60% of the deposition rate estimated through the sediment traps and suggests that 0.54 gHg ha(-1) year(-1) could eventually be transported out of the farm to the reservoir. Notwithstanding these facts, the total annual input of Hg from fish farming to the Castanhão Reservoir is less than 1.0% of the total input from anthropogenic sources.

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Section: Estimated An Emissioncontrasting

confidence: 79%

“…These results suggest that all Hg that enters the farm area via fish farming practices may accumulate in the farm's sediments. Lacerda et al (2009) and Costa et al (2013) also reported that the majority of Cu emitted in the lower Jaguaribe River as a result of aquafeed used in shrimp farming does so in the bottom sediments.…”

Section: Estimated An Emissionmentioning

confidence: 90%

Emission factor and balance of mercury in fish farms in an artificial reservoir in NE Brazil

Oliveira

Lacerda

Peres

et al. 2015

Environ Sci Pollut Res

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“…Concerning Hg, the average concentrations (μg g −1 dw) of Hg in shrimp ranged from 0.16 ± 0.04 (Pemalang) to 1.35 ± 0.89 (Brebes). The Hg source may have originated from the drainage basin (industrial, agricultural, and domestic effluents), where Hg is trapped and accumulates in a mangrove tidal creek, which may be a potential source of contamination in adjacent aquaculture sites (Costa et al 2013), or the source may have originated from the shrimp farms because of the large amounts of feed applied during breeding. Lacerda et al (2011) estimated an EF from intensive shrimp farming of 83.5 mg Hg ha…”

Section: Occurrence Of Metals In the Shrimpmentioning

confidence: 99%

Assessment of the ecological and human health risks from metals in shrimp aquaculture environments in Central Java, Indonesia

Hidayati

Prudent

Asia

et al. 2020

Environ Sci Pollut Res

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The occurrence and contamination level of seven important toxic metals (Cd, Cu, Co, Cr, Hg, Pb, and Zn) and three additional metals (Al, Fe, and Mn) in the water, sediment, and shrimp muscle in aquaculture areas located in Central Java, Indonesia, were investigated. The results suggest that the majority of metals have higher concentrations in the inlet followed by the outlet and ponds. Cd dissolved in the waters exhibited the highest level in Pekalongan (3.15 ± 0.33 μg L −1). Although Pb was not detected in the water, it was detected in the sediment, and the concentration ranged from 7.6 to 15.40 mg kg −1 dw. In general, the heavy metal concentrations in the sediments were found to decrease in the sequence Al > Fe > Mn > Zn > Cr > Cu > Co > Pb.Concentrations below the effects range low level based on the Canadian sediment quality guidelines were found for Cr, Cu, Pb, and Zn, whereas moderate sediment pollution (25-75 mg kg −1 dw) was observed for Cr (all regions), Cu (except in the Pekalongan region), and Zn (Brebes and Tegal regions) according to the US EPA standard. The status of the waters was evaluated by calculating a pollution index derived mostly from Mn and Zn. The ecological risk (geoaccumulation index (I geo ), contamination factor (CF), pollution load index (PLI), and potential ecological risk index (ERI)) determined in the sediments indicated that all studied areas had low to moderate contamination. The concentrations of all metals in shrimp were generally below the maximum limits for seafood, except for Zn (in all stations), Pb, and Cr (Tegal and Pekalongan). The hazard index values for metals indicated that consuming shrimp would not have adverse effects on human health.

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“…Mercury in coastal wetland and estuarine sediments is of significant interest due to its presence from often unambiguous historical industrial sources and its pervasive accumulation through food webs (Cotin et al, 2011; Elbaz‐Poulichet et al, 2011; Kongchum et al, 2006; Mitchell & Gilmour, 2008; O'Driscoll et al, 2011). Mercury is of particular biogeochemical and toxicological interest in mangrove–coral and human ecosystems due to distinct food‐web interactions (high biomagnification) and chronic health risks associated with the consumption of reef fish (M. F. M. Costa et al, 2012; Guzmán & García, 2002) and mangrove areas converted to aquaculture (B. Costa et al, 2013; Lacerda et al, 2011). Understanding long‐term anthropogenic and natural Hg cycling with contemporary sediment accumulation dynamics is also important, especially in relation to future remobilisation of colonial and legacy industrial Hg inputs to coastal zones (Fitzgerald et al, 2018; O'Shea et al, 2018; Rúa et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Mercury enrichment in anthrosols and adjacent coastal sediments at a Classic Maya site, Marco Gonzalez, Belize

Turner¹,

Graham

Macphail

et al. 2021

Geoarchaeology

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Elevated concentrations of total mercury (THg) are found in the surface soils and flanking wetland sediments at the Classic Maya coastal site of Marco Gonzalez, Belize. Significant concentrations (up to 1.3 µg·g−1 dry mass) of THg occur in leaf litter‐rich soils, as well as in the artefact‐rich anthrosol spread over the vegetated mound site of structures and occupation debris. The abundance and spatial pattern of major and trace elements measured in the surface soils indicate both site‐scale controlling factors of topography, structures and vegetation on soil geochemistry as well as local highs in concentration compared with background, due to human activity. Geochemical stratigraphy of wetland sediment cores shows that a shift from carbonate‐reef sediments to mangrove peat in the 13th century AD was attended by an input of allogenic (mineral) elements, including mercury. A THg concentration peak (0.8 μg·g−1) in brackish pool sediment is 210Pb‐dated to 1960–1970 AD, but the incorporation of mercury in multiple cores adjacent to the site shows increasing mercury inputs to have occurred before, during Classic‐period Maya occupation and following the sites abandonment. Analysis of element values from site‐scale soil sampling, combined with results from off‐site cores, provides a numerical framework upon which outlier values of THg and other element spatial patterns can be assessed, especially the spatial co‐association of elements related to differences in soil–sediment matrices. Geochemical results from active soils developing from occupation deposits (anthrosols) and sediment cores open up questions concerning contemporary and past mercury accumulation at coastal Mayan sites, and the wider interaction of human and natural biogeochemical processes that occur in human‐modified soils and coastal wetland sediments.

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Mercury Distribution in a Mangrove Tidal Creek Affected by Intensive Shrimp Farming

Cited by 25 publications

References 13 publications

Emission factor and balance of mercury in fish farms in an artificial reservoir in NE Brazil

Emission factor and balance of mercury in fish farms in an artificial reservoir in NE Brazil

Assessment of the ecological and human health risks from metals in shrimp aquaculture environments in Central Java, Indonesia

Mercury enrichment in anthrosols and adjacent coastal sediments at a Classic Maya site, Marco Gonzalez, Belize

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