Significance of beach geomorphology on fecal indicator bacteria levels.

Abstract:

:Large databases of fecal indicator bacteria (FIB) measurements are available for coastal waters. With the assistance of satellite imagery, we illustrated the power of assessing data for many sites by evaluating beach features such as geomorphology, distance from rivers and canals, presence of piers and causeways, and degree of urbanization coupled with the enterococci FIB database for the state of Florida. We found that beach geomorphology was the primary characteristic associated with enterococci levels that exceeded regulatory guidelines. Beaches in close proximity to marshes or within bays had higher enterococci exceedances in comparison to open coast beaches. For open coast beaches, greater enterococci exceedances were associated with nearby rivers and higher levels of urbanization. Piers and causeways had a minimal contribution, as their effect was often overwhelmed by beach geomorphology. Results can be used to understand the potential causes of elevated enterococci levels and to promote public health.

journal_name

Mar Pollut Bull

authors

Donahue A,Feng Z,Kelly E,Reniers A,Solo-Gabriele HM

doi

10.1016/j.marpolbul.2017.05.024

subject

Has Abstract

pub_date

2017-08-15 00:00:00

pages

160-167

issue

1-2

eissn

0025-326X

issn

1879-3363

pii

S0025-326X(17)30408-3

journal_volume

121

pub_type

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