Natural 14C in Saccoglossus bromophenolosus compared to 14C in surrounding sediments
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KeywordNatural radiocarbon abundance; Intertidal; Benthos; Macrofauna; Halogenated organic compounds
The natural radiocarbon (14C) content of whole, gut voided Saccoglossus bromophenolosus collected in Lowes Cove, Maine, USA, was compared with that of a non-voided worm, sectioned individuals, and the natural product 2,4-dibromophenol (2,4-DBP) isolated from S. bromophenolosus. In all cases, the 14C content was greater than that of the sediment from which the enteropneusts were collected. The 14C content of 2 polychaetes, Glycera dibranchiata and Clymenella torquata, also collected from Lowes Cove, were similarly enriched in 14C compared to the bulk sediment. These results show that all 3 species consumed recently fixed carbon that was much newer than organic carbon in the bulk sediment. The value (+10.4‰) obtained for 2,4-DBP isolated from S. bromophenolosus in this study differs from that reported in a previous study (–170‰). The discrepancy is attributed to methodological differences. The importance of selecting an appropriate method when isolating compounds for natural abundance 14C analysis is discussed.
Author Posting. © Inter-Research, 2006. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 324 (2006): 167-172, doi:10.3354/meps324167.
Suggested CitationArticle: Teuten, Emma L., King, Gary M., Reddy, Christopher M., "Natural 14C in Saccoglossus bromophenolosus compared to 14C in surrounding sediments", Marine Ecology Progress Series 324 (2006): 167-172, DOI:10.3354/meps324167, https://hdl.handle.net/1912/4508
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