Minimal incorporation of Deepwater Horizon oil by estuarine filter feeders

MARINE POLLUTION BULLETIN

卷:80

Article

Fry, Brian^1,2  Anderson, Laurie C.^3,4,5 

[1] Louisiana State Univ, Dept Oceanog & Coastal Sci, Baton Rouge, IA 70803 USA

[2] Griffith Univ, Australian Rivers Inst, Brisbane, Qld 4111, Australia

[3] Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA

[4] South Dakota Sch Mines & Technol, Dept Geol & Geol Engn, Rapid City, SD 57701 USA

[5] South Dakota Sch Mines & Technol, Museum Geol, Rapid City, SD 57701 USA

关键词: Deepwater Horizon;    Oil;    Barnacles;    Mussels;    Carbon-13;    Carbon-14;   

DOI  :  10.1016/j.marpolbul.2013.10.018

来源: Elsevier

【 摘 要 】

Natural abundance carbon isotope analyses are sensitive tracers for fates and use of oil in aquatic environments. Use of oil carbon in estuarine food webs should lead to isotope values approaching those of oil itself, -27 parts per thousand for stable carbon isotopes reflecting oil origins and -1000 parts per thousand, for carbon-14 reflecting oil age. To test for transfer of oil from the 2010 Deepwater Horizon spill into estuarine food webs, filter-feeding barnacles (Balanus sp.) and marsh mussels (Geukensia demissa) were collected from Louisiana estuaries near the site of the oil spill. Carbon-14 analyses of these animals from open waters and oiled marshes showed that oil use was <1% and near detection limits estimated at 0.3% oil incorporation. Respiration studies showed no evidence for enhanced microbial activity in bay waters. Results are consistent with low dietary impacts of oil for filter feeders and little overall impact on respiration in the productive Louisiana estuarine systems. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free