Changes to benthic infauna caused by scallop dredging at a site in Port Phillip Bay, southeastern Australia, were examined experimentally using a BACl (before, after, control, impact) design. The experimental dredging was undertaken by commercial fishermen and was typical of normal commercial operations in its spatial extent, intensity and duration Changes to benthic community structure followi...

Dredging poses a potential risk to tropical ecosystems, especially in turbidity-sensitive environments such as coral reefs, filter feeding communities and seagrasses. There is little detailed observational time-series data on the spatial effects of dredging on turbidity and light and defining likely footprints is a fundamental task for impact prediction, the EIA process, and for designing monit...

This paper was initially presented at the CEDA Dredging Days in November 2015 and was included in the conference proceedings. It is reprinted here in an adapted version with permission. Underwater sound from anthropogenic sources and its potential adverse effects on the marine environment is a topic of much global interest. In recent years, there is recognition that sound from some shipping and...

This study modeled the effects of hydraulic dredging on the lower Karun river in Ahvaz range to thevillage is Farsyan . using software 4.1 HEC-RAS, one-dimensional model of the flow field wassimulated . After entering the information into the model and its calibration based on the selected,design flow model was implemented to extract the water surface elevation levels and spreading areaswere me...

Remotely sensed assessment of dredging impacts on water turbidity is straightforward when turbidity plumes show up in clear water. However, it is more complicated in turbid waters as the spatial or temporal changes in turbidity might be of natural origin. The plausibility of attributing turbidity patterns to dredging activities would be greatly enhanced when demonstrating association between dr...

PURPOSE: The Fish Larvae and Egg Exposure System (FLEES) was designed to simulate the resuspension of sediment related to dredging operations and has been used over time to generate biological response data for dredging projects where environmental windows (EW) severely restrict dredging operations (Lutz et al. 2012). This technical note focuses on the physical and behavioral effects of resuspe...

Suction dredging for gold in river channels is a small-scale mining practice whereby streambed material is sucked up a pipe, passed over a sluice box to sort out the gold, and discarded as tailings over another area of bed. Natural resource managers should be concerned about suction dredging because it is common in streams in western North America that contain populations of sensitive aquatic s...

Dredging activities inevitably cause sediment dispersion. In certain locations, where there are important ecological areas such as mangroves or coral reefs, carefully planning the dredging can significantly reduce negative impacts. This article utilizes the dredging at Phuket port, Thailand, as a case study to demonstrate how computer simulations can be helpful to protect existing coral reefs. ...

This study investigates the fate of sediment suspended due to dredging in Newark Bay, New Jersey to characterize exposure of winter flounder spawning habitat. Winter flounder is a recreationally and commercially significant species which has experienced a steady population decline over the last twenty years. Winter flounder eggs are demersal and adhesive. Possible factors affecting spawning hab...

Lauritzen Canal, a portion of San Francisco Bay near Richmond, California, USA, was heavily contaminated with dichlorodiphenyltrichloroethane (DDT) and dieldrin as a result of releases from a pesticide-formulating firm. In 1996 and 1997, 82,000 m3 of contaminated sediment was removed from the canal by dredging. This study evaluated the success of the dredging based largely on body burdens of DD...