The impact of selenium supplemented fertilization on selenium in lake ecosystems in Finland

Wang, Dacheng; Alfthan, Georg; Aro, Antti; Mäkelä, Ari; Knuuttila, Seppo; Hammar, Taina

doi:10.1016/0167-8809(94)00574-x

Cited by 21 publications

(25 citation statements)

References 29 publications

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“…Despite having similar Se concentration and speciation in the water columns, the sediments of these lakes had total Se concentrations anticorrelated to the trophic status of the lake; that is, oligotrophic lakes had the highest Se concentrations in the sediments. Likewise, the same general trend was found for Se concentrations in perch living in these lakes, although the relative impact of trophic status on sediment Se concentrations was stronger than that on fish Se concentrations [39]. The investigated lakes did not stratify during the study, so the general characteristic of lentic systems favoring generation of sub‐ or anoxic conditions at the bottom did not apply in this particular study, leaving us with a rare opportunity to separate trophic and redox state of lentic systems.…”

Section: Selenium Speciation In Lentic and Lotic Systemssupporting

confidence: 54%

“…Selenium distribution in Finnish lakes was related to trophic status [39]. Despite having similar Se concentration and speciation in the water columns, the sediments of these lakes had total Se concentrations anticorrelated to the trophic status of the lake; that is, oligotrophic lakes had the highest Se concentrations in the sediments.…”

Section: Selenium Speciation In Lentic and Lotic Systemsmentioning

confidence: 99%

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A critical review of the biogeochemistry and ecotoxicology of selenium in lotic and lentic environments

Simmons

Wallschläger

2005

Enviro Toxic and Chemistry

128

106

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Anthropogenic activities resulting in elevated selenium (Se) levels in aquatic ecosystems can result in teratogenic and reproductive effects in fish and waterfowl. However, relationships between observed effects and exposure concentrations or body burdens are ambiguous. Therefore, it is critical to identify factors that affect Se ecotoxicity before defining adequate protective environmental regulations. One important political debate questions if Se ecotoxicity differs between standing (lentic) and flowing (lotic) waters and, if so, how this should be incorporated into the definition of protective criteria. In the present review, we compile and discuss the scarce literature regarding Se ecotoxicity in lotic systems, and we compare it to the substantial body of evidence for lentic systems. General differences between lentic and lotic systems with respect to ecology, hydrology, and biogeochemistry are identified and related to Se ecotoxicity. The limited knowledge regarding Se speciation in the biomagnification process is reviewed and put in context. Fundamental considerations suggest that Se ecotoxicity in lotic systems should be reduced compared to lentic systems, but we conclude that this statement is not substantiated by the existing data. Additionally, we identify critical gaps of knowledge that must be resolved in future studies before the argument can be decided conclusively.

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Section: Selenium Speciation In Lentic and Lotic Systemssupporting

confidence: 54%

Section: Selenium Speciation In Lentic and Lotic Systemsmentioning

confidence: 99%

A critical review of the biogeochemistry and ecotoxicology of selenium in lotic and lentic environments

Simmons

Wallschläger

2005

Enviro Toxic and Chemistry

128

106

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“…Polyethylene, ,,,,− polypropylene, , polythene, and glass bottles , are usually chosen for storing samples (Table ). Pyrex, quartz, and borosilicate glass containers present advantages over polyethylene containers when used to store water samples for Se determinations. ,, But the selection of a specific material is also dictated by the instrumental technique to be employed for the analysis and its tolerance to the presence of possible interfering substances .…”

Section: Methodsmentioning

confidence: 99%

Selenium Concentrations in Natural and Environmental Waters

1997

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“…Gustafsson 460 andJohnsson (1992, 1994) found that a high proportion of the Se(IV) added to 461 humic lake water was adsorbed by humic substances in the form of Se(IV) to 462 metal-humic complexes, which is similar to phosphate adsorption by iron-463 humic complexes. A study of Finnish lakes has also shown that about half of 464 the TDSe was present in humic substances, whereas DISe represented 465 between 12% and 24% of the TDSe (Wang et al, 1995). However, the 466 mechanisms behind the interactions between Se and dissolved organic ligands 467 are still poorly understood.…”

Section: Mixing Experiments 359mentioning

confidence: 99%

Distribution and behaviour of dissolved selenium in tropical peatland-draining rivers and estuaries of Malaysia

Yan¹,

Müller²,

Wu³

et al. 2019

Preprint

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24 Selenium (Se) is an essential micronutrient for many organisms. Despite 25 its importance, our current knowledge of the biogeochemical cycling of 26 dissolved Se in tropical estuaries is limited, especially in Southeast Asia. To 27 gain insights into Se cycling in tropical peat-draining rivers and estuaries, 28 samples were collected from the Rajang, Maludam, Sebuyau, Simunjan, 29 Sematan, Samunsam, and Lunda rivers and estuaries in western Sarawak, 30 Malaysia, in March and September 2017 and analysed for various forms of Se 31 (dissolved inorganic and organic). Mean total dissolved Se (TDSe), dissolved 32 inorganic Se (DISe), and dissolved organic Se concentrations (DOSe) were 2.2 33 nmol L −1 (range: 0.7 to 5.7 nmol L −1 ), 0.18 nmol L −1 (range: less than the 34 detection limit to 0.47 nmol L −1 ), and 2.0 nmol L −1 (range: 0.42 to 5.7 nmol L −1 ), 35 respectively. In acidic, low-oxygen, organic-rich blackwater (peatland-draining) 36 rivers, the concentrations of DISe were extremely low, whereas those of DOSe 37 were high. In rivers and estuaries that drained peatland, DOSe/TDSe ratios 38 ranged from 0.67 to 0.99, showing that DOSe dominated. The positive 39 relationship between DISe and salinity and the negative relationship between 40 DOSe and salinity indicate marine and terrestrial origins of DISe and DOSe, 41 respectively. The positive correlations of DOSe with the humification index and 42 humic-like chromophoric dissolved organic matter components in freshwater 43 river reaches suggest that peat soils are probably the main source of DOSe. 44 Discharges of water enriched with DOSe fractions associated with peatland-45 derived high-molecular-weight, high-aromaticity dissolved organic matter 46 discharged from estuaries may promote productivity in the adjoining 47 50 https://doi.

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The impact of selenium supplemented fertilization on selenium in lake ecosystems in Finland

Cited by 21 publications

References 29 publications

A critical review of the biogeochemistry and ecotoxicology of selenium in lotic and lentic environments

A critical review of the biogeochemistry and ecotoxicology of selenium in lotic and lentic environments

Selenium Concentrations in Natural and Environmental Waters

Distribution and behaviour of dissolved selenium in tropical peatland-draining rivers and estuaries of Malaysia

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