Environmental status of sediments in the lower Hawkesbury-Nepean River, New South Wales∗

Matthai, C.; Guise, K.; Coad, Peter; McCready, S.; Taylor, S. E.

doi:10.1080/08120090802547058

Cited by 9 publications

(10 citation statements)

References 44 publications

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“…Many such compounds, especially copper (Cu), lead (Pb) and zinc (Zn) are environmentally toxic and are persistent as pollution sources due to their affinity for, and immobilisation within, anaerobic sediments (Irvine and Birch 1998). Although studies of heavy metals in sediments are relatively rare in Australia (Matthai et al 2009), significantly higher levels of some metals (e.g., Cu, Pb, Zn) were found at boating 'hot spots' such as wharfs and boat slipways, compared to open water sites, in some cases exceeding sediment quality guidelines in the lower Hawkesbury-Nepan River (Matthai et al 2009). …”

Section: Anti-fouling Treatmentsmentioning

confidence: 98%

“…The presence of TBT in an actively polluting form is not; however, necessarily linked to its level in silt and mud sediments as it may be released from the boat hull in flakes which are deposited in high energy sandy areas, such as shipping channels. It may therefore potentially be present in measurable quantities in sediments in areas not otherwise exhibiting elevated concentrations of inorganic analytes or organic compounds (Matthai et al 2009). …”

Section: Anti-fouling Treatmentsmentioning

confidence: 98%

“…Such disturbance continues to provide a pollution source even after the use of the fuel has ceased (Davenport and Davenport 2006;Mastran et al 1994;Mosisch and Arthington 2001). Determining the contribution of recreational boating to such chemical pollution is problematic as PAH can occur naturally and anthropogenically (Berko 1999); however, chemical impacts are best monitored in the sediments except where the pollution is recent and acute (Mosisch and Arthington 2001;Matthai et al 2009). …”

Section: Engine Chemicalsmentioning

confidence: 98%

“…While acknowledging the environmental impacts of TBT and heavy metals, concerns have also been voiced regarding the organic biocides introduced as their replacement (e.g., Evans et al 2000;Matthai et al 2009;Thomas 2001). Specific concerns include limited knowledge of possible toxicity, sub-lethal impacts, persistence, and synergistic effects.…”

Section: Organic Biocidesmentioning

confidence: 99%

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The direct physical, chemical and biotic impacts on Australian coastal waters due to recreational boating

Burgin

Hardiman

2011

Biodivers Conserv

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In economically developed countries it is projected that by around 2015 over 50% of a person’s lifetime will become available for leisure. Demand for leisure needs, already strong, will continue to increase. One segment of the market, outdoor nature-based recreation (including tourism), is growing strongly worldwide. A substantial proportion of these activities are water-based. The associated demand for recreational vessels has increased rapidly in recent years and is projected to continue to trend upwards. Australian trends mirror those internationally. Using Australia as a case study, we review the direct physical, chemical and biotic impacts associated with recreational boating in coastal water environments. Major physical impacts include disturbance due to movement of craft in shallow waters (e.g., turbulence) and the effects of anchoring/drag, noise/interference/collision that impacts on wildlife. The most critical chemical impacts result from pollution due to fuels and oils, defouling treatments (even those not legislated in-country), and human waste (e.g., sewage effluent). Important biotic impacts are the potential continued introduction and secondary spread of non-native species. We conclude that while greater research effort will provide more environmentally benign products, with the increasing popularity of recreation vessels, it will be beyond the resources of Australian governments to police legislation effectively. However, based on Australian’s demonstrated engagement with government in terrestrial environmental management, with their deliberate engagement with the boating fraternity, the impacts of recreational boating would be lessened

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Section: Anti-fouling Treatmentsmentioning

confidence: 98%

Section: Anti-fouling Treatmentsmentioning

confidence: 98%

Section: Engine Chemicalsmentioning

confidence: 98%

Section: Organic Biocidesmentioning

confidence: 99%

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The direct physical, chemical and biotic impacts on Australian coastal waters due to recreational boating

Burgin

Hardiman

2011

Biodivers Conserv

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“…1) However, these antifoulants are toxic, 2) and many studies have reported detecting these antifoulants in water and sediment samples in various aquatic environments. [3][4][5] To develop environmentally sustainable antifouling agents, recent research has been focused on the behavior of microorganisms, biofilm formation and metabolite production which can inhibit marine invertebrate larval settlement and the attachment of algal spores. In the case of diatoms, Daume et al 6) have reported the inhibition of a Haliotis rubra settlement by monospecific diatomaceous biofilms.…”

mentioning

confidence: 99%

Isolation and Structural Determination of the Antifouling Diketopiperazines from Marine-Derived <i>Streptomyces praecox</i> 291-11

Cho¹,

Kang

Hong

et al. 2012

Bioscience, Biotechnology, and Biochemistry

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Composition of bacterial community and isolation of bacteria responsible for diuron degradation in sediment and soil under anaerobic condition

Duc

Oanh

2022

Arch Microbiol

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The herbicide diuron is extensively used in the agriculture sector and is detected widely in the environment. Although several studies on the degradation of diuron by aerobic micro-organisms have been reported, the degradation of diuron by anaerobic micro-organisms has not been received much attention. Also, no pure culture that can degrade diuron under anaerobic conditions has yet been reported.The evaluation of diuron degradation in the soil and sediment slurries showed that diuron led to a decrease in the biodiversity of the bacterial communities. Two mixed bacterial cultures, one from the soil and the other from sediment slurries, were isolated from the enrichment media under anaerobic conditions. After 30 days of incubation at 30 o C, the mixed bacterial culture from the soil degraded 84.5 ± 5.5%, and that from the sediment slurry degraded 94.5 ± 3.0% of diuron in liquid mineral medium at an initial concentration of 20 mg/L. 1-(3,4-dichlorophenylurea (DCPU), 3-(3-chlorophenyl)-1,1-dimethylurea (CPDMU), and 3,4-dichloroaniline (3,4-DCA) were the major diuron metabolites produced by both the indigenous micro-organisms and the isolated bacteria.

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Environmental status of sediments in the lower Hawkesbury-Nepean River, New South Wales∗

Cited by 9 publications

References 44 publications

The direct physical, chemical and biotic impacts on Australian coastal waters due to recreational boating

The direct physical, chemical and biotic impacts on Australian coastal waters due to recreational boating

Isolation and Structural Determination of the Antifouling Diketopiperazines from Marine-Derived <i>Streptomyces praecox</i> 291-11

Composition of bacterial community and isolation of bacteria responsible for diuron degradation in sediment and soil under anaerobic condition

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