Evaluation of seasonal scale first flush pollutant loading and implications for urban runoff management

Soller, Jeffrey A.; Stephenson, J. Brad; Olivieri, K.J.; Downing, James; Olivieri, Adam W.

doi:10.1016/j.jenvman.2004.12.007

Cited by 90 publications

(64 citation statements)

References 5 publications

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“…First flush phenomenon, in which higher pollutant loadings occur in the first few storm events of a season, as has been observed for urban runoff (Soller et al, 2005), could be an important factor. Spikes of this nature are not observed in data preceding 1999 (data not shown), however, and may be attributed to ageing infrastructure and/or insufficient or inappropriate maintenance and upgrade programmes at wastewater treatment works, amongst other things, within these catchments.…”

Section: Discussionmentioning

confidence: 85%

River water quality in the northern sugarcane-producing regions of South Africa and implications for irrigation: A scoping study

Laan¹,

Antwerpen²,

Bristow³

2012

WSA

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Sustainable cultivation of crops under irrigation requires water of appropriate quality, especially with regards to salinity and sodicity. Agriculture can impact negatively on water quality, often through the export of nutrients (particularly nitrogen (N) and phosphorus (P)) from the root zone, resulting in eutrophication of surface water and pollution of groundwater. Sugarcane is the major irrigated crop with regards to area cultivated in the Crocodile, Komati-Lomati and Pongola River catchments. Increasing demand for and use of water resources in these catchments has led to concerns about deterioration in water quality. In this study, chemical water quality data obtained from the South African Department of Water Affairs was used to assess the quality of river water in the above catchments. Electrical conductivity (EC) data show an increase in salt concentration along the river course as a result of various anthropogenic activities in the catchment. Irrigators located further downstream will therefore generally have to pay more attention to the quality of their irrigation water and on-farm salinity management. For the lower parts of the Komati-Lomati and Pongola River catchments, hazards due to sodicity will also need attention. Interestingly, acidifying effects of mine water drainage are potentially being countered by high salt input from agricultural return flow. Nutrient enrichment was evident at many of the river sampling points. Increasing salt, sodicity, N and P over time for most of the rivers studied is also a concern that requires action to ensure the sustainability of irrigation activities in these catchments. More intensive monitoring, including measurement of organic N and P fractions, is recommended to improve understanding of the contribution of different anthropogenic activities to river water pollution and to develop effective mitigation strategies.

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Section: Discussionmentioning

confidence: 85%

River water quality in the northern sugarcane-producing regions of South Africa and implications for irrigation: A scoping study

Laan¹,

Antwerpen²,

Bristow³

2012

WSA

View full text Add to dashboard Cite

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“…Another analysis carried out in diverse studies consists in looking for relationships between the variations of pollutant concentration and the catchment characteristics (Göbel et al 2006;Mitchell 2005;Kayahanian et al 2007; Crabtree et al 2006;Brown and Peake 2006;Soller et al 2005;Lee and Bang 2000;Irish et al 1998). These studies attempt to find out whether it is possible to determine the concentration of several pollutants by analyzing only some of the associated factors, especially those that can be easily and economically assessed.…”

Section: N O T C O P Y E D I T E Dmentioning

confidence: 99%

Relationship between Urban Runoff Pollutant and Catchment Characteristics

Rodríguez-Hernández

Fernández-Barrera

Vega-Zamanillo

et al. 2013

J. Irrig. Drain Eng.

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“…In urban and agricultural environments, exposures to copper can occur when storm water pulses into an aquatic habitat (Anderson et al 1996;Soller et al 2005;Wheeler et al 2005). In a hatchery setting, fish can be intentionally treated with copper to control disease (e.g., Schlenk et al 1998).…”

Section: Introductionmentioning

confidence: 99%

Olfactory inhibition and recovery in chum salmon (Oncorhynchus keta) following copper exposure

Sandahl¹,

Miyasaka²,

Koide³

et al. 2006

Can. J. Fish. Aquat. Sci.

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Abstract:Copper can be an effective hatchery treatment to control certain parasitic and fungal infections in salmonids, yet it is also highly toxic to the fish's olfactory system. Numerous reports have described the early inhibitory impacts of copper on fish olfaction, but very few have addressed processes of recovery. Here we show that the chum salmon (Oncorhynchus keta) olfactory system can recover from short-term (4 h) exposures to copper (3-58 µgqL -1 ) within 1 day, as indicated by electro-olfactogram (EOG) recordings. Recovery followed initial EOG reductions of up to 88%. We also applied a novel cytophysiological approach to monitor changes in the olfactory receptor cells using a fluorescent styryl dye, AM1-43. Copper's influence on the number of receptor cells that labelled with the dye was biphasic, initially increasing the number at the two lowest copper concentrations (3 and 8 µgqL -1 ) and decreasing the number at the two highest concentrations (24 and 58 µg·L -1 ). Changes in the ability of olfactory receptor neurons to internalize the dye were monitored up to 10 days in fish recovering from copper exposure.Résumé : Le cuivre peut servir de traitement efficace des piscicultures afin de contrôler certaines infections à parasites ou à champignons chez les salmonidés, bien qu'il soit très toxique pour le système olfactif des poissons. De nombreux travaux ont décrit les premiers effets inhibiteurs du cuivre sur l'olfaction des poissons, mais très peu se sont intéressés aux processus de récupération. Nous montrons ici que le système olfactif du saumon kéta (Oncorhynchus keta) peut récupérer après de courtes (4 h) expositions au cuivre (3-58 µg·L -1 ) en moins d'une journée, d'après les enregistrements d'électro-olfactogrammes (EOG). La récupération fait suite à des réductions initiales de l'EOG pouvant atteindre 88 %. Une nouvelle méthode cytophysiologique utilisant un colorant styryle fluorescent, AM1-43, permet de suivre les changements dans les cellules olfactives réceptrices. L'effet du cuivre sur le nombre de cellules réceptrices marquées par le colorant se fait en deux phases, au départ une augmentation du nombre aux deux concentrations les plus faibles de cuivre (3 et 8 µg·L -1 ) et une diminution aux deux concentrations les plus élevées (24 et 58 µg·L -1 ). Nous avons suivi les changements de la capacité des neurones olfactifs récepteurs d'incorporer le colorant jusqu'à 10 jours chez des poissons en train de récupérer d'une exposition au cuivre.[Traduit par la Rédaction] Sandahl et al. 1847

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Evaluation of seasonal scale first flush pollutant loading and implications for urban runoff management

Cited by 90 publications

References 5 publications

River water quality in the northern sugarcane-producing regions of South Africa and implications for irrigation: A scoping study

River water quality in the northern sugarcane-producing regions of South Africa and implications for irrigation: A scoping study

Relationship between Urban Runoff Pollutant and Catchment Characteristics

Olfactory inhibition and recovery in chum salmon (Oncorhynchus keta) following copper exposure

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