Effects of changing land use on the microbial water quality of tidal creeks

DiDonato, Guy T.; Stewart, J R; Sanger, Denise; Robinson, Brian; Thompson, Brian; Holland, A.F.; Dolah, Robert F. Van

doi:10.1016/j.marpolbul.2008.08.019

Cited by 55 publications

(39 citation statements)

References 40 publications

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“…Conditions in urban streams reflect changes in the upland landscape, including changes in hydrology and water quality (Arnold & Gibbons, 1996;Carvalho et al, 2010;DiDonato et al, 2009;Hatt, Fletcher, Walsh, & Taylor, 2004;Nagy, Lockaby, Kalin, & Anderson, 2012;Olivera & DeFee, 2007;Sun, Chen, Chen, & Ji, 2013;Walsh et al, 2005;Wu, Thompson, Kolka, Franz, & Stewart, 2013). For example, increases in total discharge, peak discharge, and flashiness have been reported in urban streams as impervious land cover increases within a watershed (Nelson et al, 2009;Schoonover, Lockaby, & Helms, 2006;.…”

Section: Urban Landscapes and Watershedsmentioning

confidence: 99%

Watershed features and stream water quality: Gaining insight through path analysis in a Midwest urban landscape, U.S.A.

Stewart

Thompson

et al. 2015

Landscape and Urban Planning

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Section: Urban Landscapes and Watershedsmentioning

confidence: 99%

Watershed features and stream water quality: Gaining insight through path analysis in a Midwest urban landscape, U.S.A.

Stewart

Thompson

et al. 2015

Landscape and Urban Planning

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“…The increase in NPS contaminant loading has been attributed to a variety of factors such as hydrology, geology, and climate as well as the intensity and type of watershed land uses (Didonato et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Characterization of nonpoint source microbial contamination in an urbanizing watershed serving as a municipal water supply

Rowny

Stewart

2012

Water Research

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Inland watersheds in the southeastern United States are transitioning from agricultural and forested land uses to urban and exurban uses at a rate greater than the national average. This study sampled creeks representing a variety of land use factors in a rapidly urbanizing watershed that also serves as a drinking water supply. Samples were collected bimonthly under dry-weather conditions and four times during each of three storm events and assessed for microbial indicators of water quality. Concentrations of fecal indicator bacteria (FIB) including fecal coliforms and Escherichia coli were measured using standard membrane filtration techniques. Results showed that FIB concentrations varied between 10(0) and 10(4) colony forming units (CFU) per 100 mL. An analysis of variance (ANOVA) showed that FIB were generally higher in more developed watersheds (p < 0.01). Concentrations were also significantly greater during storm events than during dry-weather conditions (p < 0.02), although concentrations demonstrated both intra and inter-storm variability. These results indicate that the magnitude of microbial contamination is influenced by intensity of watershed development, streamflow and antecedent precipitation. Dry-weather FIB loads showed considerable seasonal variation, but the average storm event delivered contaminant loads equivalent to months of dry-weather loading. Analysis of intra-storm loading patterns provided little evidence to support "first-flush" loading of either FIB, results that are consistent with environmental reservoirs of FIB. These findings demonstrate that single sampling monitoring efforts are inadequate to capture the variability of microbial contaminants in a watershed, particularly if sampling is conducted during dry weather. This study also helps to identify timing and conditions for public health vulnerabilities, and for effective management interventions.

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“…In the creeks sampled in this study, Sanger et al (1999a, b), DiDonato et al (2008 found significantly higher concentrations of nitrate plus nitrite, pathogen indicators (i.e., enterococci, fecal coliforms and coliphages), total PAHs, and total PCBs in the suburban and/or urban systems. Although samples were collected in different locations across the creek channel in the 1st and 2nd/3rd order, previous research comparing macrobenthic communities between intertidal and subtidal microhabitats found few differences between these habitats (Filipowicz 2004).…”

Section: Resultsmentioning

confidence: 51%

Land use effects on macrobenthic communities in southeastern United States tidal creeks

Washburn

Sanger

2010

Environ Monit Assess

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Runoff from impervious land cover has a major impact on headwater tidal creek ecosystems resulting from ever increasing development along the coastline. Tidal creek habitats can serve as "early warning systems" for anthropogenic stressors due to their proximity to the uplands. In this study, the macrobenthic community was sampled along the longitudinal gradient of tidal creeks (i.e., first order, second order, and third order) in North Carolina, South Carolina, and Georgia which varied in their levels of watershed development (salt marsh, forested, suburban, and urban). This study was designed to assess the condition of macrobenthic communities in tidal creek ecosystems under varying levels of anthropogenic stressors and test whether the conclusions of a previous study in South Carolina (Holland et al., J Exp Mar Biol Ecol 298:151-178, 2004) could be generalized to the southeastern USA. Metrics of community-level and species-specific response within tidal creeks draining watersheds of varying degrees of impervious cover suggest the macrobenthic community may be a useful indicator of development in tidal creeks ecosystems. The differences observed when data from all three states were pooled was consistent with previous findings in South Carolina tidal creeks which illustrates that macrobenthic communities in tidal creeks may react to watershed development in similar patterns along the southeastern coast of the USA.

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Effects of changing land use on the microbial water quality of tidal creeks

Cited by 55 publications

References 40 publications

Watershed features and stream water quality: Gaining insight through path analysis in a Midwest urban landscape, U.S.A.

Watershed features and stream water quality: Gaining insight through path analysis in a Midwest urban landscape, U.S.A.

Characterization of nonpoint source microbial contamination in an urbanizing watershed serving as a municipal water supply

Land use effects on macrobenthic communities in southeastern United States tidal creeks

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