Pore water transport of enterococci out of beach sediments

MARINE POLLUTION BULLETIN

卷:62

Article

Phillips, Matthew C.^1,2  Solo-Gabriele, Helena M.^1,2  Reniers, A. J. H. M.^1,3  Wang, John D.^1,3  Kiger, Russell T.²  Abdel-Mottaleb, Noha^1,2 

[1] Univ Miami, NSF NIEHS Oceans & Human Hlth Ctr, Miami, FL 33149 USA

[2] Univ Miami, Dept Civil Arch & Environm Engn, Coral Gables, FL 33146 USA

[3] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Div Appl Marine Phys, Miami, FL 33149 USA

关键词: Enterococci;    Beach sand;    Pore water;    Sand cores;    Columns;   

DOI  :  10.1016/j.marpolbul.2011.08.049

来源: Elsevier

【 摘 要 】

Enterococci are used to evaluate the safety of beach waters and studies have identified beach sands as a source of these bacteria. In order to study and quantify the release of microbes from beach sediments, flow column systems were built to evaluate flow of pore water out of beach sediments. Results show a peak in enterococci (average of 10% of the total microbes in core) released from the sand core within one pore water volume followed by a marked decline to below detection. These results indicate that few enterococci are easily removed and that factors other than simple pore water flow control the release of the majority of enterococci within beach sediments. A significantly larger quantity and release of enterococci were observed in cores collected after a significant rain event suggesting the influx of fresh water can alter the release pattern as compared to cores with no antecedent rainfall. (C) 2011 Elsevier Ltd. All rights reserved.

【 授权许可】

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