Distribution and speciation of metals, phosphorus, sulfate and organic material in brackish estuary water affected by acid sulfate soils

Nystrand, Miriam; Österholm, Peter; Yu, Changxun; Åström, Mats E.

doi:10.1016/j.apgeochem.2016.01.003

Cited by 39 publications

(49 citation statements)

References 60 publications

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“…The enrichment is stronger in the upper core sections deposited in 1986 and later than in the core sections deposited before 1960. The enrichment is in line with the previously documented increase of metal loading to estuaries in western Finland as a consequence of increased artificial drainage of the AS soil landscape, beginning in the 1960s (Yu et al, 2015(Yu et al, , 2016. The vertical distribution of Mn shows elevated values in upper core sections similar to the other metals at the easternmost sites ( Fig.…”

Section: Metal Distribution 250supporting

confidence: 90%

“…1b). This is in good agreement with previous observations, which show that Al to a large extent is deposited very close river mouths together with organic material (Nordmyr et al, 2008a(Nordmyr et al, , 2008bÅström et al, 2012;Nystrand et al, 2016). Wallin et al (2015) report the Al content 260 of 59900 mg/kg for a single sample "from the first accumulation basin in the estuary" of the Laihianjoki River (Table 2), but do not provide coordinates or a map of the sampling location, which makes it difficult to assess the representativeness of the sample.…”

Section: Metal Distribution 250supporting

confidence: 88%

“…Al, Cd, Co, La, Mn, Ni and Zn) is flushed to recipient streams, with detrimental ecological consequences on biodiversity and the community structure of fish, benthic invertebrates and aquatic plants (Hudd and Kjellman, 2002;Fältmarsch et al, 2008;Sutela and Vehanen, 2017). It is expected that climate change will increase the acidic runoff and metal loading from AS soils (Saarinen et al, 2010;Veijalainen et al, 2012;Nystrand et al, 2016). 45…”

mentioning

confidence: 99%

“…When acidic metal-rich river waters from the boreal AS soil landscape are discharged to estuaries with higher pH and salinity, the metals are complexed with organic matter or co-precipitated with Al-, Fe-and Mn-oxyhydroxides and consequently deposited in sediments (Åstöm and Corin, 2000;Nystrand et al, 2016). Low-density organic aggregates have the capacity to be transported across estuarine gradients, and their role in the seaward trace metal transport has been highlighted in recent 50 studies, particularly in the Baltic Sea (Gustafsson et al, 2000;Herzog et al, 2020;Jokinen et al, 2020).…”

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confidence: 99%

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Enrichment of trace metals from acid sulphate soils in sediments of the Kvarken Archipelago, eastern Gulf of Bothnia, Baltic Sea

Virtasalo¹,

Österholm²,

Kotilainen³

et al. 2020

Preprint

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Abstract. Rivers draining the acid sulphate soils of western Finland are known to deliver large amounts of trace metals with detrimental environmental consequences to the recipient estuaries in the eastern Gulf of Bothnia, northern Baltic Sea. However, the distribution of these metals in the coastal sea area, and the relevant metal transport mechanisms have been less studied. This study investigates the spatial and temporal distribution of metals in 9 sediment cores, collected from the Kvarken Archipelago, which is the recipient of Laihianjoki and Sulvanjoki Rivers that are impacted by acid sulphate soils. The contents of Cd, Co, Cu, La, Mn, Ni and Zn increase in the cores during the 1960s and 1970s as a consequence of intensive artificial drainage of the acid sulphate soil landscape. The metal deposition has remained at the high level since the 1980s. The metal enrichment in seafloor sediments is currently visible at least 25 km seaward from the river mouths. Comparison to sediment quality guidelines shows that the metal contents are very likely to cause detrimental effects on marine biota more than 12 km out from the river mouths. The dynamic sedimentary environment of the shallow archipelago makes these sediments potential future sources of metals to the ecosystem. Finally, the strong association of metals and nutrients to the same sediment grain size class of 2–6 µm indicates that the transformation of dissolved organic matter and metals to metal-organic aggregates at the river mouths is the key mechanism of seaward trace metal transport, in addition to co-precipitation with Mn-oxyhydroxides identified in previous studies. The large share of terrestrial organic carbon of the total organic C in these sediments (interquartile range = 39–48 %) highlights the importance of riverine organic matter supply. These findings are important for the estimation of environmental risks and the management of biologically-sensitive coastal sea ecosystems.

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Section: Metal Distribution 250supporting

confidence: 90%

Section: Metal Distribution 250supporting

confidence: 88%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Enrichment of trace metals from acid sulphate soils in sediments of the Kvarken Archipelago, eastern Gulf of Bothnia, Baltic Sea

Virtasalo¹,

Österholm²,

Kotilainen³

et al. 2020

Preprint

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“…The material is a two-year-old grafted jujube tree, named Tianshan Junzao, provided by Agricultura Agronomian Alar Company (Nystrand and Österholm, 2016). Dwarf planting method is used, the average plant height of jujube tree is 1-1.…”

Section: Experiments Materialsmentioning

confidence: 99%

Brackish water irrigation on the characteristics of carbon, nitrogen and phosphorus nutrients in the soil nearby crop roots

2018

Emir J Food Agric

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To study the effect of brackish water on carbon, nitrogen and phosphorus in the soil nearby root zone of crops. By analyzing the influence of different levels of salt and fresh water combination irrigation on organic carbon, nitrogen and phosphorus migration rule in the soil, and the dynamic change rule in different sections to investigate the spatial distribution of each index at the end of the experiment. According to the soil properties and root distribution of Zizyphusjujuba, brackish water drip irrigation quota, irrigation water salinity and fertilization measures of root zone, different gradient levels of combined irrigation experiments were set up. The experiment with fresh water was used as control to establish orthogonal test scheme. The content of carbon, nitrogen and phosphorus in soil nearby crop roots was measured, and the measurement of carbon, nitrogen and phosphorus in the soil nearby crop roots was utilized to analyze the effect of brackish water irrigation on the soil nearby crop roots. With the increase of brackish water amount for irrigation, nitrate and alkali nitrogen content in the soil nearby roots was significantly decreased, and the reduction trend is going up after a significant amount of brackish water for irrigation is added. While phosphorus content decreased at different levels after brackish water amount for irrigation was increased, but the decrease is not significant. Brackish water irrigation with appropriate amount of salt can improve the effective utilization rate of carbon and nitrogen and phosphorus in soil, and result in higher yield for crops. The fruit set is the highest under brackish water irrigation with 3 g/L salt.

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The influence of the environment in the incorporation of copper and cadmium in scraper insects

Loureiro

Calisto

Magro

et al. 2021

Environ Monit Assess

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Distribution and speciation of metals, phosphorus, sulfate and organic material in brackish estuary water affected by acid sulfate soils

Cited by 39 publications

References 60 publications

Enrichment of trace metals from acid sulphate soils in sediments of the Kvarken Archipelago, eastern Gulf of Bothnia, Baltic Sea

Enrichment of trace metals from acid sulphate soils in sediments of the Kvarken Archipelago, eastern Gulf of Bothnia, Baltic Sea

Brackish water irrigation on the characteristics of carbon, nitrogen and phosphorus nutrients in the soil nearby crop roots

The influence of the environment in the incorporation of copper and cadmium in scraper insects

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