Trace element accumulation in three seabird species from Horn�ya, Norway

Wenzel, C.; Gabrielsen, Geir Wing

doi:10.1007/bf00212971

Cited by 45 publications

(19 citation statements)

References 48 publications

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“…Frequently diet is considered to be the most important factor (Hutton 1981. Ohlendorf & Harrison 1986, Braune 1987, Becker et al 1994, Wenzel & Gabrielsen 1995. In this study mercury concentrations accumulated by feathered chicks were presumably dependent on food ingested between hatching and feather growth, and so we can relate the vanations in mercury concentrations between species to differences in diets.…”

Section: Age-related Trendsmentioning

confidence: 72%

“…Inter-specific differences In mercury burdens a r e often attributed to variations in diet or trophic level (Hutton 1981, Ohlendorf & Harrison 1986, Braune 1987, Becker e t al. 1994, Wenzel & Gabrielsen 1995, but studies attempting to quantify this a r e lacking. A g e h a s n o effect on mercury concentrations in feathers once birds a r e fully grown (Furness e t al.…”

Section: Introductionmentioning

confidence: 99%

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Influence of species, age and diet on mercury concentrations in Shetland seabirds

Fm¹,

Phillips²,

Catry³

et al. 1997

Mar. Ecol. Prog. Ser.

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Chick down, chick feathers and feathers from adults of 5 seabird species (Arctic skua Stercorarjus parasiticus, great skua Cdtharacta skua, Arctic tern Sterna paradjsaea, kittiwake Rissa tridactyla, and common guillemot Uria aalge) were analysed for mercury. Individual female Arct~c and great skuas' body feather mercury concentrations correlated wlth concentrations in their chicks' down, but not feathers (Arctic skua. r = 0.64; great skua: r = 0.66) This demonstrated that mercury in chick down originated from the egg, and that mercury in the egg and In adult females' plumage could have the same dietary source. Inter-specific differences in mercury concentrations were found for all age classes sampled, and these could be explained partly in terms of dietary specialisation, although physiological variations may also be important. All 3 age classes of great skua showed a direct incl-ease in mercury with increasing proportion of bird meat in the diet of individual pairs. In kittiwake, Arctic skua and great skua, adults had higher mercury concentrations than chicks and ch~ck down had higher concentratlons than chick feathers. However, In 2 species (Arctic terns and guillemots) chick down had higher concentrations than adult feathers. Chick dnlvn could be sampled for mercury content d s an alternative to using eggs in national biomonitoring xhernes. Feathered chicks could be sa~iipled to determine mercury availability around the breedlng colony between hatching and fledging.

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Section: Age-related Trendsmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Influence of species, age and diet on mercury concentrations in Shetland seabirds

Fm¹,

Phillips²,

Catry³

et al. 1997

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

“…A correlation between Cd and Cu were reported only for Lesser black-backed gulls Larus fus eus and Cory's Shearwaters Caloneetis diomedea (Stewart et al, 1996). In the present study A significant positive correlation between Zn and Cd has been reported in many seabird species (Scheuhammer, 1987;Nielsen and Dietz, 1989;Henny et al, 1991;Wenzel and Gabrielsen, 1995;Stewart et al, 1996). Chemically, Zn and Cd are very similar and of ten associated in nature.…”

Section: Correlation Between Element Concentrationsmentioning

confidence: 71%

“…Nielsen and Dietz Common eider the differences between male and female element levels were not significant (Norheim and Borch-Iohnsen, 1990). Dietz, 1989;Wenzel and Gabrielsen, 1995;Dietz et al, 1990;etc.). Trace element levels in birds from Hornøya are in good agreement with Wenzel and Gabrielsen (1995) data for the same speeies from this area.…”

Section: Sex Dependence Of Element Concentrationsmentioning

confidence: 99%

“…Dietz, 1989;Wenzel and Gabrielsen, 1995;Dietz et al, 1990;etc.). Trace element levels in birds from Hornøya are in good agreement with Wenzel and Gabrielsen (1995) data for the same speeies from this area. However, levels of Cd and Hg found in Common guillemot liver from Seven Islands are two times lower than in the same species from Homøya (Wenzel and Gabrielsen, 1995 Dietz, 1989) and Svalbard (Norheim, 1987).…”

Section: Sex Dependence Of Element Concentrationsmentioning

confidence: 99%

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