Abstract：
:Sulphidic mine waste disposed in marine environments constitutes an environmental risk to aquatic life due to potential uptake and accumulation of heavy metals in biota. Fiord sediments near the former Black Angel Mine in West Greenland are contaminated by lead and zinc as a result of submarine tailings disposal in 1973-1990. In 1999 cores were taken up to 10 km away from the disposal area. Analyses include heavy metals, radiochemical dating (210Pb) and high-resolution foraminiferal stratigraphy. The mining operation resulted in significant changes in the assemblage composition. In addition, up to 20% of the Melonis barleeanus population found in sediment deposited during nearby tailings disposal was deformed compared to a natural background of less than 5%. Throughout cores representing the last 100 years of sedimentation, the total numbers and frequency of morphological abnormalities among M. barleeanus revealed some correlation with heavy metals concentrations (up to r2 = 79%). We conclude that abnormalities among foraminifera may represent a useful biomarker for evaluating trends in the biological impact resulting of submarine tailings disposal as well as long-term environmental impact and subsequent recovery.
journal_name
Mar Environ Resjournal_title
Marine environmental researchauthors
Elberling B,Knudsen KL,Kristensen PH,Asmund Gdoi
10.1016/s0141-1136(02)00219-2keywords:
subject
Has Abstractpub_date
2003-04-01 00:00:00pages
235-56issue
3eissn
0141-1136issn
1879-0291pii
S0141-1136(02)00219-2journal_volume
55pub_type
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