Trophic relationships in an Arctic food web and implications for trace metal transfer

Dehn, Larissa-A.; Follmann, Erich H.; Thomas, Dana L.; Rosa, Cheryl; Duffy, Lawrence K.; O’Hara, Todd M.

doi:10.1016/j.scitotenv.2005.11.012

Cited by 185 publications

(113 citation statements)

References 95 publications

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“…There are also cases where there is a lack of trace metal increase along marine food webs (Dietz et al 2000;Dehn et al 2006;Marín-Guirao et al 2008), probably due to the low assimilation efficiencies and high efflux rates of trace metals in marine organisms, which decreases their potential for biomagnification (Wang 2002). Conversely to As, Cd, and Hg, and in agreement with our results, Pb is known not to be transferred efficiently through marine food webs (Neff 2002).…”

Section: Fwmf Valuessupporting

confidence: 87%

“…Although linear regressions are indicative of overall trends in trace elements along food chains, it is worth bearing in mind that calculation of FWMF values requires a number of assumptions that may not hold true for trace metals (Dehn et al 2006). These assumptions include that the contaminant burden of a predator originates from the prey and that the tissue under evaluation is a good proxy for total metal burden.…”

Section: Fwmf Valuesmentioning

confidence: 99%

“…In addition, trace metals are generally actively regulated and subject to binding-site competition (McGeer et al 2003). Furthermore, several physical and biological factors, including geography, sex, age, and body condition, affect metal deposition in animal tissues (Dehn et al 2006).…”

Section: Fwmf Valuesmentioning

confidence: 99%

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Trophic Transfer of Trace Elements in an Isotopically Constructed Food Chain From a Semi-enclosed Marine Coastal Area (Stagnone di Marsala, Sicily, Mediterranean)

Vizzini

Costa

Tramati

et al. 2013

Arch Environ Contam Toxicol

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Trace element accumulation is particularly important in coastal and transitional environments, which act as contaminant buffers between the continental and marine systems. We compared trace element transfer to the biota in two locations with different open-sea exposures in a semi-enclosed marine coastal area (Stagnone di Marsala, Sicily, Italy) using isotopically reconstructed food chains. Samples of sediment, macroalgae, seagrasses, invertebrates, fish, and bird feathers were sampled in July 2006 and analysed for stable carbon and nitrogen isotopes (d 13 [Pb]). Trophic magnification factors were calculated through the relationships between trace elements and d 15 N in consumers. As and Pb were greater in organic matter sources (sediments and primary producers), whereas Cd and THg were greater in bird feathers. At the food chain level, an insignificant trophic transfer was found for all elements, suggesting biodilution rather than biomagnification. Sediments were more contaminated in the location with lower open-sea exposure. Macroalgae and seagrasses overall mirrored the spatial pattern highlighted in sediments, whereas differences between the two locations became further decreased moving toward higher trophic levels, indicating that trophic transfer of sediment and macrophyte-bound trace elements to the coastal lagoon food chain may be of relatively minor importance.

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Section: Fwmf Valuessupporting

confidence: 87%

Section: Fwmf Valuesmentioning

confidence: 99%

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Trophic Transfer of Trace Elements in an Isotopically Constructed Food Chain From a Semi-enclosed Marine Coastal Area (Stagnone di Marsala, Sicily, Mediterranean)

Vizzini

Costa

Tramati

et al. 2013

Arch Environ Contam Toxicol

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“…Cd or Pb. In arctic fox (Vulpes lagopus formerly known as Alopex lagopus) in Canada, mean Hg content observed in liver was 0.14 μg/g wet weight (Hoekstra et al 2003), while in the USA (Alaska) in kidneys it was even 1.59 mg/kg DM (Dehn et al 2006). Other data concerning Hg content in organs and tissues of farm and wild foxes in various regions of the world were reported by Kalisinska et al (2012).…”

Section: Introductionmentioning

confidence: 93%

Mercury bioaccumulation in hair and skin of arctic foxes (Vulpes lagopus) and silver foxes (Vulpes vulpes) in rural and urbanized region

Dobrzański¹,

Przysiecki²,

Filistowicz³

et al. 2014

CZECH J ANIM SCI

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Mercury bioaccumulation in hair and skin of silver and arctic foxes farmed in typically rural and urbanized regions (Wielkopolskie Voivodship, Poland) was assessed. Hair and skin samples were collected and analyzed for total Hg content using atomic absorption spectrometry. Hairs and skin of foxes farmed in the rural region accumulated higher amount of Hg compared to animals from the urbanized one. Species effect (lower Hg concentration in V. lagopus) was noted, females having higher accumulation compared with males. The highest Hg content was observed in hairs of V. vulpes females in the rural region (0.207 mg/kg on average), and in skin of V. lagopus females (0.0082 mg/kg on average). Highly significant correlation (r = 0.796) was noted between Hg content in skin and hairs of farm foxes. The present study confirms the previous finding that non-invasively collected hair samples are a good tool applicable in evaluating heavy metal load of different environments.

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“…As long-lived top predators in the trophic network, marine mammals accumulate high levels of chemicals such as organochlorines (Debier et al, 2006(Debier et al, , 2003 and trace elements (Das et al, 2003). Several exposure pathways for the uptake of trace elements in marine mammals may occur (Table 1), but many studies suggest that diet constitutes the main pathway of exposure (Das et al, 2003;Dehn et al, 2006). In addition, pollutant concentrations in marine mammals vary as a function of age, body condition, and diet selection, among other things (Caurant et al, 1994;Das et al, 2003) (Table 1).…”

Section: Introductionmentioning

confidence: 99%

Blood dynamics of mercury and selenium in northern elephant seals during the lactation period

Habran

Debier

Crocker

et al. 2011

Environmental Pollution

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a b s t r a c tThe effects of reproduction and maternal investment (i.e., milk transfer) on trace element levels remain poorly understood in marine mammals. We examined the blood dynamics of mercury (Hg) and selenium (Se) during lactation in the northern elephant seal (Mirounga angustirostris), a top predator from the North Pacific Ocean. Total Hg and Se levels were measured in whole blood and milk of 10 motherepup pairs on days 5 and 22 of lactation. Both Hg and Se were transferred to offspring through the milk. Results suggested that the maternal transfer of Se was prominent during lactation, whereas the Hg transfer was larger during gestation. The lactation period affected Hg and Se levels in the blood of elephant seal mothers and pups. Physiological processes and their relationship to body condition should be considered carefully when interpreting trace element levels in the framework of biomonitoring.

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Trophic relationships in an Arctic food web and implications for trace metal transfer

Cited by 185 publications

References 95 publications

Trophic Transfer of Trace Elements in an Isotopically Constructed Food Chain From a Semi-enclosed Marine Coastal Area (Stagnone di Marsala, Sicily, Mediterranean)

Trophic Transfer of Trace Elements in an Isotopically Constructed Food Chain From a Semi-enclosed Marine Coastal Area (Stagnone di Marsala, Sicily, Mediterranean)

Mercury bioaccumulation in hair and skin of arctic foxes (Vulpes lagopus) and silver foxes (Vulpes vulpes) in rural and urbanized region

Blood dynamics of mercury and selenium in northern elephant seals during the lactation period

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