Impact of the ring-billed gull (Larus delawarensis) on the microbiological quality of recreational water

Leévesque, Benoît; Brousseau, Pauline; Simard, Pierre; Dewailly, Éric; Meisels, Monica; Ramsay, Daniele; Joly, J

doi:10.1128/aem.59.4.1228-1230.1993

Cited by 58 publications

(1 citation statement)

References 20 publications

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“…Many factors can impact coliform abundance in aquatic environments, including pH, nutrient availability, temperature, and anthropogenic pollution, as well as mammalian and avian abundances (8,22,30,36). Waterfowl excrete a large amount of fecal matter, and their feces have commonly been found to harbor pathogens (4,9,13,25). Microorganisms that are excreted in the feces of ducks have been linked to human health hazards such as Salmonella, pathogenic bacteria that reside in the digestive tracts of animals and can lead to gastrointestinal disruptions in humans (32).…”

Section: Introductionmentioning

confidence: 99%

Waterfowl Influence on Fecal Indicator Bacteria in Central Florida Freshwater Lakes

Schomaker

Gasper

2018

finefocus

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Bacteria are important natural components of virtually every environment, including water systems. While many are beneficial to the ecosystem in which they are found, some can be indicators of pathogens that can endanger human health. Fecal coliform bacteria such as Escherichia coli are bacterial indicators that can originate from many of the same sources as pathogenic bacteria and serve as a sign that pathogens may be present. These bacterial counts can be influenced by many different well-studied environmental factors, including pH, temperature, and nutrient availability. In addition to these factors, mammalian and waterfowl presence can influence coliform abundance. While this area of research has been examined before, conflicting conclusions have been reached as to whether or not waterfowl abundance positively correlates with coliform bacteria abundance. Levels of E. coli as well as Enterococcus, a genus of non-coliform bacterial organisms that are also found in high concentrations in feces, were measured by membrane filtration of water samples collected from six freshwater lakes around Lakeland, FL and were isolated from fresh fecal samples that were simultaneously collected from waterfowl species present at the lakes. Results suggest a correlation between the abundance of E. coli and the presence of waterfowl.

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Section: Introductionmentioning

confidence: 99%

Waterfowl Influence on Fecal Indicator Bacteria in Central Florida Freshwater Lakes

Schomaker

Gasper

2018

finefocus

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Salmonellain Aquatic Environments

Borrego

Castro

Figueras

2003

Encyclopedia of Environmental Microbiology

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Taxonomic Position of Salmonella The Role of Salmonella in Human Infection Importance of Salmonella in Water Environments Water Treatment and Salmonella Survival of Salmonella in Aquatic Environments Waterborne Outbreaks Caused by Salmonella Salmonella in Shellfish Detection and Enumeration Methods

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Water Quality in South San Francisco Bay, California: Current Condition and Potential Issues for the South Bay Salt Pond Restoration Project

Grenier

Davis

2010

Reviews of Environmental Contamination and Toxicology

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The SBSPRP is an extensive tidal wetland restoration project that is underway at the margin of South San Francisco Bay, California. The Project, which aims to restore former salt ponds to tidal marsh and manage other ponds for water bird support, is taking place in the context of a highly urbanized watershed and an Estuary already impacted by chemical contaminants. There is an intimate relationship between water quality in the watershed, the Bay, and the transitional wetland areas where the Project is located. The Project seeks to restore habitat for endangered and endemic species and to provide recreational opportunities for people. Therefore, water quality and bioaccumulation of contaminants in fish and wildlife is an important concern for the success of the Project. Mercury, PCBs, and PBDEs are the persistent contaminants of greatest concern in the region. All of these contaminants are present at elevated concentrations both in the abiotic environment and in wildlife. Dioxins, pyrethroids, PAHs, and selenium are also problematic. Organochlorine insecticides have historically impacted the Bay, and they remain above thresholds for concern in a small proportion of samples. Emerging contaminants, such as PFCs and non-PBDE flame retardants, are also an important water quality issue. Beyond chemical pollutants, other concerns for water quality in South San Francisco Bay exist, and include biological constituents, especially invasive species, and chemical attributes, such as dissolved oxygen and salinity. Future changes, both from within the Project and from the Bay and watershed, are likely to influence water quality in the region. Project actions to restore wetlands could worsen, improve, or not affect the already impaired water quality in South Bay. Accelerated erosion of buried sediment as a consequence of Project restoration actions is a potentially serious regional threat to South Bay water and sediment quality. Furthermore, the planned restoration of salt ponds to tidal marsh has raised concerns about possible increased net production of methylmercury and its subsequent accumulation in the food web. This concern applies not only to the restored marshes, but also to the South Bay as a whole, which could be affected on a regional scale. The ponds that are converted to tidal marsh will sequester millions of cubic meters of sediment. Sequestration of sediment in marshes could remove contaminated sediment from the active zone of the Bay but could also create marshes with contaminated food webs. Some of the ponds will not be restored to marsh but will be managed for use by water birds. Therefore, the effect of dense avian populations on eutrophication and the introduction of pathogens should be considered. Water quality in the Project also could be affected by external changes, such as human population growth and climate change. To address these many concerns related to water quality, the SBSPRP managers, and others faced with management of wetland restoration at a regional scale, should practice adaptive management...

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Impact of the ring-billed gull (Larus delawarensis) on the microbiological quality of recreational water

Cited by 58 publications

References 20 publications

Waterfowl Influence on Fecal Indicator Bacteria in Central Florida Freshwater Lakes

Waterfowl Influence on Fecal Indicator Bacteria in Central Florida Freshwater Lakes

Salmonellain Aquatic Environments

Water Quality in South San Francisco Bay, California: Current Condition and Potential Issues for the South Bay Salt Pond Restoration Project

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