Spatial and temporal microbial pollution patterns in a tropical estuary during high and low river flow conditions

MARINE POLLUTION BULLETIN

卷:114

Article

Wiegner, T. N.¹  Edens, C. J.²  Abaya, L. M.²  Carlson, K. M.^1,4  Lyon-Colbert, A.^3,5  Molloy, S. L.^3,6 

[1] Univ Hawaii, Dept Marine Sci, 200 W Kawili St, Hilo, HI 96720 USA

[2] Univ Hawaii, Trop Conservat Biol & Environm Sci Grad Program, 200 W Kawili St, Hilo, HI 96720 USA

[3] Calif State Univ Hayward, Dept Biol Sci, Hayward, CA 94542 USA

[4] Kaloko Honokohau Natl Hist Pk 73-4786 Kanalani St, Kailua, HI 96740 USA

[5] Oregon State Univ, Coll Publ Hlth & Human Sci, 160SW 26th St, Corvallis, OR 97331 USA

[6] Nat Resources Div, 295 Riverside Circle, Naples, FL 34102 USA

关键词: Fecal indicator bacteria;    Spatial and temporal patterns;    Storms;    Mapping;    Hawai'i;    Estuary;   

DOI  :  10.1016/j.marpolbul.2016.11.015

来源: Elsevier

【 摘 要 】

Spatial and temporal patterns of coastal microbial pollution are not well documented. Our study examined these patterns through measurements of fecal indicator bacteria (FIB), nutrients, and physiochemical parameters in Hilo Bay, Hawai'i, during high and low river flow. >40% of samples tested positive for the human-associated Bacteroides marker, with highest percentages near rivers. Other FIB were also higher near rivers, but only Clostridium perfringens concentrations were related to discharge. During storms, FIB concentrations were three times to an order of magnitude higher, and increased with decreasing salinity and water temperature, and increasing turbidity. These relationships and high spatial resolution data for these parameters were used to create Enterococcus spp. and C. perfringens maps that predicted exceedances with 64% and 95% accuracy, respectively. Mapping microbial pollution patterns and predicting exceedances is a valuable tool that can improve water quality monitoring and aid in visualizing FIB hotspots for management actions. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free