Abstract:
:Selenium concentrations have been measured in sediment, fucoid macroalgae and macroinvertebrates from four estuaries of SW England (Yealm, Plym, Looe, Fal). Sediment concentrations ranged from about 0.4 μg g(-1) in the Yealm to 1.49 μg g(-1) at one site in the Plym. Concentrations in Fucus vesiculosus (0.05-0.31 μg g(-1)) and F. ceranoides (0.05-0.51 μg g(-1)) were significantly lower than corresponding concentrations in sediment but there was no correlation between algal and sediment concentrations. Selenium concentrations in Littorina littorea (~4 μg g(-1)), Hediste diversicolor (2.82-12.68 μg g(-1)), Arenicola marina (~17 μg g(-1)) and Scrobicularia plana (1.18-6.85 μg g(-1)) were considerably higher than concentrations in macroalga or sediment, suggesting that Se is effectively accumulated from the diet. Although Se concentrations in some invertebrates exceed toxicity thresholds for the diet of predacious birds and fish, no specific evidence for Se toxicity exists in these estuaries.
journal_name
Mar Pollut Bulljournal_title
Marine pollution bulletinauthors
Turner Adoi
10.1016/j.marpolbul.2013.05.023subject
Has Abstractpub_date
2013-08-15 00:00:00pages
192-8issue
1eissn
0025-326Xissn
1879-3363pii
S0025-326X(13)00270-1journal_volume
73pub_type
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