Generation of enterococci bacteria in a coastal saltwater marsh and its impact on surf zone water quality

被引:139
作者
Grant, SB [1 ]
Sanders, BF
Boehm, AB
Redman, JA
Kim, JH
Mrse, RD
Chu, AK
Gouldin, M
McGee, CD
Gardiner, NA
Jones, BH
Svejkovsky, J
Leipzig, GV
机构
[1] Univ Calif Irvine, Henry Samueli Sch Engn, Irvine, CA 92697 USA
[2] Univ Calif Irvine, Sch Earth Syst Sci, Irvine, CA 92697 USA
[3] Orange Cty Sanitat Dist, Fountain Valley, CA 92728 USA
[4] URS Greiner Woodward Clyde, San Diego, CA USA
[5] Univ So Calif, Dept Biol Sci, Los Angeles, CA 90089 USA
[6] Ocean Imaging Inc, Solana Beach, CA 92075 USA
[7] Golden W Coll, Huntington Beach, CA 92647 USA
[8] Komex H2O Sci, Huntington Beach, CA 92649 USA
关键词
D O I
10.1021/es0018163
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Elevated levels of enterococci bacteria, an indicator of fecal pollution, are routinely detected in the surf zone at Huntington State and City Beaches in southern California. A multidisciplinary study was carried out to identify sources of enterococci bacteria landward of the coastline. We find that enterococci bacteria are present at high concentrations in urban runoff, bird feces, marsh sediments, and on marine vegetation. Surprisingly, urban runoff appears to have relatively little impact on surf zone water quality because of the long time required for this water to travel from its source to the ocean. On the other hand, enterococci bacteria generated in a tidal saltwater marsh located near the beach significantly impact surf zone water quality. This study identifies a potential tradeoff between restoring coastal wetlands and protecting beach water quality acid calls into question the use of ocean bathing water standards based on enterococci at locations near coastal wetlands.
引用
收藏
页码:2407 / 2416
页数:10
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