Dredging

Bacterium Could Treat PCBs Without the Need for Dredging

Researchers at Rensselaer Polytechnic Institute have discovered a tiny bacterium that could one day transform the way we remove polychlorinated biphenyls (PCBs) from our environment//. The organism could be the key to developing methods that help detoxify commercial PCB compounds on site — without ...

Dredging in Biological News

Douglas-fir, geoducks make strange bedfellows in studying climate change

...reens may reach 500 to 1,000 years in age, but geoducks rarely exceed 150 years. "Scientists at the Canadian Department of Fisheries and Oceans are dredging up shells of dead geoducks from the ocean floor," Black said, "and we hope we can append their growth patterns to chronology developed from live indiv...

UNH researchers test sediment-scrubbing technology in NH river

...uted sediment in coastal waterways. Rather than dredging up the problem, or burying it under several feet o...ntaminated sediment; more common responses include dredging or capping sediment beneath several feet of sand. But dredging is expensive, disrupts habitats and poses the prob...

Mercury contamination found in stranded Victorian dolphins

... have come from the sediments of the Bay and researchers are concerned that dredging activities may increase the dolphins' exposure. "Sediment contains mercu...pson said it was critical that further studies were done throughout the bay dredging process to ensure any further decline in dolphin health could be identified...

Journey to the center of the earth: Discovery sheds light on mantle formation

...aboard a 400-foot-long research icebreaker, Snow and his team sifted through thousands of pounds of rocks scooped up from the ocean floor by the ships dredging device. The samples were labeled and cataloged and then cut into slices thinner than a human hair to be examined under a microscope. That is when Sn...

Lowly Icelandic midges reveal ecosystem's tipping points

... the fish ran out of food." The model developed by Ives' team implicates dredging in the lake, an operation initiated in the 1960s and now abandoned that was...s in the fluctuation of midge populations. "Our model suggests that this dredging could, in principle, have caused greater fluctuations in midge populations,...

Dead clams tell many tales

...organisms had left behind for potential fossilization. Kidwell's research focuses on coastal and open-marine settings, where disruptions range from dredging and bottom-fishing to the chemical byproducts of urbanization and agriculture that flow into the oceans. She compiled nearly 100 live-dead studies on ...

Increase in ethanol production from corn could significantly impact

...ers could also both be attributed to soil erosion. High sedimentation rates carry financial consequences as they increase the cost of often-mandatory dredging for transportation and recreation. The committee observed that erosion might be minimized if future production of biofuels looks to perennial crops, ...

Beekeepers work hard for the honey, despite changing tupelo forest

...ay it is increasingly difficult to find places to put their hives. One reason is because the forest has taken a beating from more than 45 years of dredging of the Apalachicola for a river navigation project. The dumping of the dredged material has cut off many tupelo trees from their source of fresh water...

New Scripps Oceanography project to study sediments and ecosystem restoration in Venice lagoon

...nd toxicological implications of major public works in Venice and elsewhere." The field experiment phase by SIOSED scientists will include sediment dredging and transplantation to build six 35-meter-long and 10-meter-wide subtidal banks inside the lagoon. The banks will allow the researchers to test how th...

Dredging in Biological Technology

Chrome Group to Seek Listing for Some of its Subsidiaries

...erests in oil and gas, insurance, destination inspection services, bio-fuels energy production, petroleum products trading, real estate, logistics and dredging services. Chrome Oil Services Limited, the pioneer company in the group has been doing business since the early 1990s and has handled key projects (as...