Trace elements and carbon and nitrogen stable isotopes in organisms from a tropical coastal lagoon.
Trace elements (Fe, Mn, Al, Zn, Cr, Cu, Ni, Pb, Cd, Hg, and As) and stable isotope ratios (delta(13)C and delta(15)N) were analyzed in sediments, invertebrates, and fishes from a tropical coastal lagoon influenced by iron ore mining and processing activities to assess the differences in trace element accumulation patterns among species and to investigate relations with trophic levels of the organisms involved. Overall significant negative relations between trophic level (given by (15)N) and trace element concentrations in gastropods and crustaceans showed differences in internal controls of trace element accumulation among the species of different trophic positions, leading to trace element dilution. Generally, no significant relation between delta(15)N and trace element concentrations was observed among fish species, probably due to omnivory in a number of species as well as fast growth. Trace element accumulation was observed in the fish tissues, with higher levels of most trace elements found in liver compared with muscle and gill. Levels of Fe, Mn, Al, and Hg in invertebrates, and Fe and Cu in fish livers, were comparable with levels in organisms and tissues from other contaminated areas. Trace element levels in fish muscle were below the international safety baseline standards for human consumption.
Pereira
A A
AA
Institute for Environmental Studies, VU University, Amsterdam, The Netherlands. adriana.pereira@ivm.falw.vu.nl
van Hattum
B
B
de Boer
J
J
van Bodegom
P M
PM
Rezende
C E
CE
Salomons
W
W
D000818:Animals; D002247:Carbon Isotopes / Q000032:analysis / Q000378:metabolism*; D003445:Crustacea / Q000378:metabolism; D004784:Environmental Monitoring; D005399:Fishes / Q000378:metabolism; D019015:Geologic Sediments / Q000737:chemistry; D006430:Hemiptera / Q000378:metabolism; D007448:Invertebrates / Q000378:metabolism; D009587:Nitrogen Isotopes / Q000032:analysis / Q000378:metabolism*; D018570:Risk Assessment; D017747:Seafood / Q000706:statistics & numerical data; D012623:Seawater / Q000737:chemistry; D012908:Snails / Q000378:metabolism; D014131:Trace Elements / Q000032:analysis / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
D002247:Carbon Isotopes; D009587:Nitrogen Isotopes; D014131:Trace Elements; D014874:Water Pollutants, Chemical