Dispersion and retrievability of water quality indicators during tidal cycles in coastal Salaya, Gulf of Kachchh (West coast of India)

Mohandass, Chellandi; Kumar, Shravan; Ramaiah, N.; Vethamony, P.

doi:10.1007/s10661-009-1203-3

Cited by 8 publications

(5 citation statements)

References 11 publications

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“…Similarly to the present investigation, Mohandass, Kumar, Ramahiah and Vethamony (), found that strong currents and flow appear to play a prominent role in dispersion of bacteria in coastal Salaya (India). The pollutant concentrations of the sources were chosen considering, that the sites where the shrimp ponds discharge their effluents have antibiotics concentrations of 3.0 mg L −1 (Le & Munekage ).…”

Section: Discussionsupporting

confidence: 87%

Assessment of the tidal currents and pollutants dynamics associated with shrimp aquaculture effluents in SAMARE coastal lagoon (NW Mexico)

Ley

Osuna

2012

Aquac Res

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The pollutant dispersion induced by the tidal hydrodynamics was investigated through a modified model in Santa María-La Reforma coastal lagoon, a body water that receives effluents containing chemicals that are used in shrimp aquaculture. Maxima tidal currents (0.7 ms À1 ) were predicted within the main channel. Residual currents, of the order of 0.01 ms À1 , were also predicted. The hypothetical pollutant, released at four selected sites that receive effluents from shrimp aquaculture and agriculture within the lagoon, spread towards the northern and southern inlets. The advection and diffusion processes allow the pollutant in most of the cases, to reach the inlets in about 120 h. The spreading of the pollutant in the coastal lagoon seems to be modulated by the tidal velocity fields. The presence of an area where tidal currents converge in the eastern part of Talchichitle Island suggests that a potential accumulation of pollutants occurs in this site.

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Section: Discussionsupporting

confidence: 87%

Assessment of the tidal currents and pollutants dynamics associated with shrimp aquaculture effluents in SAMARE coastal lagoon (NW Mexico)

Ley

Osuna

2012

Aquac Res

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“…In the present study from Indian waters, the coliform and Streptococci were lowest during post monsoon and highest during monsoon. A similar pattern was also reported in Indian coastal zones such as Tamil Nadu beaches [1], Cauvery river estuary [14], Tamirabarani river estuary [13], Mandovi and Zuari estuary [4], Gujarat waters [29], the Visakhapatnam coast [3], and Mumbai waters [30]. …”

Section: Discussionsupporting

confidence: 78%

Biomonitoring along the Tropical Southern Indian Coast with Multiple Biomarkers

et al. 2016

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We assessed the spatial and temporal variations of pollution indicators and geochemical and trace metal parameters (23 in total) from water and sediment (144 samples) of three different eco-niches (beach, fishing harbor, and estuary) in larger coastal cities of southern India (Cuddalore and Pondicherry) for one year. A total of 120 marine Pseudomonas isolates were challenged against different concentrations of copper solutions and 10 different antibiotics in heavy metal and antibiotic resistance approaches, respectively. The study shows that 4.16% of the isolates could survive in 250 mM of copper; 70% were resistant to minimum concentrations. Strains were resistant (98.4%) to at least one antibiotic in Cuddalore compared to the Pondicherry (78.4%) region. Pollution index (PI) (0–14.55) and antibiotic resistance index (ARI) (0.05–0.10) ratio indicated that high bacterial and antibiotic loads were released into the coastal environment. The degree of trace metal contamination in sediments were calculated by enrichment factor (EF), contamination factor (CF), pollution load index (PLI), and geo-accumulation index (Igeo). Statistical parameters like two-way analysis of variance (ANOVA), correlation, factor analysis and scatter matrix tools were employed between the 23 parameters in order to find sources, pathways, disparities and interactions of environmental pollutants. It indicates that geochemical and biological parameters were not strongly associated with each other (except a few) and were affected by different sources. Factor analysis elucidated, ‘microbe–metal’ interaction (Factor 1–48.86%), ‘anthropogenic’ factor (Factor 2–13.23%) and ‘Pseudomonas–Cadmium’ factor (Factor 3–11.74%), respectively.

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“…Transport of FIO in coastal waters is driven via tides and currents, allowing their movement from a source, such as rivers and streams, to a distant bathing water or away from it (Kim et al, 2004) and currents also influence bacterial population decay by cell separation (de Brauwere et al, 2014). Flooding tides tend to dilute nearshore FIO sources which results in a reduction in bacterial concentration (Boehm & Weisberg, 2005; Coelho et al, 1999; Mohandass et al, 2010). Falling ebb tides may allow drainage of IE generated in tidal saltwater marshes and beach aquifers (Boehm et al, 2004) causing an increase in concentrations of FIO in bathing waters (Boehm et al, 2004; Grant et al, 2001).…”

Section: Biological Chemical and Physical Factors Influencing Bathing...mentioning

confidence: 99%

Forecasting bathing water quality in the UK: A critical review

Krupska,

Speight,

Robinson

et al. 2024

WIREs Water

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Climate change is altering rainfall patterns resulting in increasing variability and intensity of rainfall events worldwide. Increases to short duration, intense rainfall (i.e., convective rainfall), will lead to increases in sewage overflow and run‐off from agricultural land. Such events generate spikes in micro‐organisms from feces and manure, especially Escherichia coli and intestinal enterococci, that temporarily end up in bathing waters posing serious health risks to bathers. Forecasting of bathing water quality associated with convective rainfall presents a distinctive forecasting challenge due to high uncertainties associated with predicting the timing, location, and impact of such events. In this article, we review examples of bathing water quality forecasting practices, with a focus on the United Kingdom where convective rainfall in the summer bathing water season is a particular concern, and question whether the current approach is robust in a changing climate. We discuss potential upgrades in bathing water forecasting and identify the main challenges that must be addressed before an improved framework for bathing water forecasting can be achieved. Although developments in meteorological and hydrological short‐range forecasting capabilities are promising, convective rainfall forecasting has significant predictability limits. We suggest taking full advantage of short‐range forecasts to provide sub‐daily bathing water forecasts, focusing on targeted bathing water monitoring regimes to improve model accuracy with the ultimate goal of providing improved information and guidance for beach users.This article is categorized under: Science of Water > Water and Environmental Change Human Water > Water Governance Science of Water > Water Quality

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Dispersion and retrievability of water quality indicators during tidal cycles in coastal Salaya, Gulf of Kachchh (West coast of India)

Cited by 8 publications

References 11 publications

Assessment of the tidal currents and pollutants dynamics associated with shrimp aquaculture effluents in SAMARE coastal lagoon (NW Mexico)

Assessment of the tidal currents and pollutants dynamics associated with shrimp aquaculture effluents in SAMARE coastal lagoon (NW Mexico)

Biomonitoring along the Tropical Southern Indian Coast with Multiple Biomarkers

Forecasting bathing water quality in the UK: A critical review

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