Mercury in fish in Swedish lakes

Håkanson, Lars; Nilsson, Åke; Andersson, Tommy

doi:10.1016/0269-7491(88)90246-1

Cited by 180 publications

(61 citation statements)

References 3 publications

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“…Accordingly, the correspondence between sedimentological units and Coriolis related currents, that has been observed by several authors (Nydegger, 1979;Wright and Nydegger, 1980;Hamblin and Carmack, 1978; and Janson, 1983) seems supported also by this research. Altogether, we think that these circulation patterns could help to understand the bottom dynamic processes that are of vital importance for a proper interpretation of sediment data and those related to the deposition within the lake of river-borne pollutants, such as mercury pollution, as observed by Hakanson (1974).…”

Section: Discussionmentioning

confidence: 99%

Study of tributary inflows in Lake Iseo with a rotating physical model

et al. 2014

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The The results of the physical model confirm the relevant role played by the Coriolis force in the northern part of the lake. Under ordinary flow conditions, the model shows a systematic deflection of the inflowing waters towards the western shore of the lake. The inflow triggers a clockwise gyre within the Lovere bay, to the West of the inflow, and a slow counter-clockwise gyre, to the East of the inflow, that returns water towards the river mouth along the eastern shore. For discharges with higher return period, when only the contribution by Oglio River is relevant, the effect of the Earth's rotation weakens in the entrance

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Section: Discussionmentioning

confidence: 99%

Study of tributary inflows in Lake Iseo with a rotating physical model

et al. 2014

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“…Concentrations of Hg in fish in newly-flooded reservoirs have been found to be affected by the quality of the water (Snodgrass et al, 2000), reservoir size (Hakanson et al, 1988), the time since impoundment (Hylander and Goodsite, 2006), water residence time (Montgomery et al, 2000), and bacterial methylation of Hg found in flooded soils (Blum et al, 2013). Seasonal variation of Hg concentrations in reservoirs is influenced by stratification/de-stratification patterns of the reservoir (Canavan et al, 2000;Dijkstra et al, 2013), but the spatial pattern of Hg in inundated environments can be dominated by internal processes as a result of the availability of organic matter (Kasper et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Mercury bioaccumulation in the food web of Three Gorges Reservoir (China): Tempo-spatial patterns and effect of reservoir management

Zhou

Yuan

et al. 2015

Science of The Total Environment

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“…Over the last century there have been widespread increases in environmental mercury (Hg) contamination (Evans et al 1972, Appelquist et al 1985, Hakanson et al 1988, UNEP 2003. In addition, recent studies have shown elevated Hg concentrations in fish from areas with low background levels and source inputs (Watras et al 1995, Bodaly andFudge 1999).…”

Section: Introductionmentioning

confidence: 99%

Mercury Trophic Transfer in a Eutrophic Lake: The Importance of Habitat‐specific Foraging

Eagles‐Smith

Suchanek

Colwell

et al. 2008

Ecological Applications

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Abstract. Mercury (Hg) trophic transfer and bioaccumulation in fish from a mineimpacted, eutrophic lake were examined in relation to foraging habitat, trophic position, and size. Diet analysis indicated that there were clear ontogenetic shifts in foraging habitats and trophic position. Pelagic diet decreased and benthic diet increased with increasing fish length in bluegill, black crappie, inland silverside, and largemouth bass, whereas there was no shift for prickly sculpin or threadfin shad. Stable carbon isotope values (d 13 C) were inversely related to the proportion of pelagic prey items in the diet, but there was no clear relationship with benthic foraging. There were distinct differences between pelagic and benthic prey basal d13 C values, with a range of approximately À28ø in pelagic zooplankton to approximately À20ø in benthic caddisflies. Profundal prey such as chironomid larvae had intermediate d13 C values of approximately À24ø, reflecting the influence of pelagic detrital subsidies and suppressing the propagation of the benthic carbon isotope signal up the food chain. Fish total mercury (TotHg) concentrations varied with habitat-specific foraging, trophic position, and size; however, the relationships differed among species and ages. When controlling for the effects of species, length, and trophic position, TotHg and d 13 C were positively correlated, indicating that Hg trophic transfer is linked to benthic foraging. When examined on a species-specific basis, TotHg was positively correlated with d 13 C only for bluegill, largemouth bass, and threadfin shad. However, diet-based multiple regression analyses suggested that TotHg also increased with benthic foraging for inland silverside and black crappie. In both species, benthic prey items were dominated by chironomid larvae, explaining the discrepancy with d 13 C. These results illustrate the importance of foraging habitat to Hg bioaccumulation and indicate that pelagic carbon can strongly subsidize the basal energy sources of benthic organisms.

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Mercury in fish in Swedish lakes

Cited by 180 publications

References 3 publications

Study of tributary inflows in Lake Iseo with a rotating physical model

Study of tributary inflows in Lake Iseo with a rotating physical model

Mercury bioaccumulation in the food web of Three Gorges Reservoir (China): Tempo-spatial patterns and effect of reservoir management

Mercury Trophic Transfer in a Eutrophic Lake: The Importance of Habitat‐specific Foraging

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