نتایج جستجو برای: ballast water

تعداد نتایج: 551909  

Journal: :Environmental technology 2015
Zhishan Yang Wenju Jiang Yi Zhang T M Lim

Ship-borne ballast water contributes significantly to the transfer of non-indigenous species across aquatic environments. To reduce the risk of bio-invasion, ballast water should be treated before discharge. In this study, the efficiencies of several conventional and advanced oxidation processes were investigated for potential ballast water treatment, using a marine dinoflagellate species, Scri...

2012

The ballast water treatment method consists of bubbling the inert gas via a row of pipes (orifices at the bottom of the pipes) located at the bottom of the tank, while maintaining a negative pressures of -2 psi at the ullage space. The inert gas from a standard shipboard inert gas generator is composed of 84% Nitrogen, 12-14% CO2 and 2% Oxygen. The ballast water will be equilibrated with gas fr...

Journal: :Marine pollution bulletin 2013
Daniel Masson Gerard Thomas Sylvie Genauzeau Olivier Le Moine Annick Derrien

The most important oyster farming area in Europe is in a close proximity of two medium size merchant ports. Cargo ships deballast in this area before loading, releasing unwanted or noxious marine species. During a sampling campaign aboard these arriving ships, we found in some ballast water samples a huge number of potentially toxic dinoflagellates and some potentially pathogenic bacteria. A mo...

2015
Myint Myint Maw Junsheng Wang Fabo Li Jinhu Jiang Younan Song Xinxiang Pan Christopher Q. Lan Yanqun Li

Ship ballast water treatment methods face many technical challenges. The effectiveness of every treatment method usually is evaluated by using large scale equipment and a large volume of samples, which involves time-consuming, laborious, and complex operations. This paper reports the development of a novel, simple and fast platform of methodology in evaluating the efficiency and the best parame...

2015
Oscar Casas-Monroy Robert D. Linley Jennifer K. Adams Farrah T. Chan D. Andrew R. Drake Sarah A. Bailey

Understanding the implications of different management strategies is necessary to identify best conservation trajectories for ecosystems exposed to anthropogenic stressors. For example, science-based risk assessments at large scales are needed to understand efficacy of different vector management approaches aimed at preventing biological invasions associated with commercial shipping. We conduct...

2016
Hugh J. MacIsaac Emma M. De Roy Brian Leung Alice Grgicak-Mannion Gregory M. Ruiz

The Indo-Pacific Red Lionfish was first reported off the Florida coast in 1985, following which it has spread across much of the SE USA, Gulf of Mexico, and Caribbean Sea. Lionfish negatively impact fish and invertebrate assemblages and abundances, thus further spread is cause for concern. To date, the fish has not been reported on the Pacific coast of North or Central America. Here we examine ...

Journal: :Marine pollution bulletin 2017
Marco R Hernandez Mattias L Johansson Yanyu Xiao Mark A Lewis Hugh J MacIsaac

Ballast water has been a major source of non-indigenous species introductions. The International Maritime Organization has proposed performance standard that will establish an upper limit for viable organisms in discharged ballast. Here we test different sampling efforts for zooplankton in ballast water on a commercial vessel. We fit different probability density functions to find the most repr...

Journal: :Trends in ecology & evolution 2000
Ricciardi MacIsaac

The North American Great Lakes have been invaded and dramatically altered by more than 145 alien species. Many invasions have occurred during the past few decades because of the release of Eurasian ballast water from transoceanic ships. Current regulations require ships to exchange foreign ballast with highly saline water before entering the Great Lakes; this procedure should prevent colonizati...

2012
Kaveh Emami Vahid Askari Matthias Ullrich Khwajah Mohinudeen Arga Chandrashekar Anil Lidita Khandeparker J. Grant Burgess Ehsan Mesbahi

To evaluate a rapid and cost-effective method for monitoring bacteria in ballast water, several marine bacterial isolates were characterized by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS). Since International Maritime Organization (IMO) regulations are concerned with the unintended transportation of pathogenic bacteria through ballast water, empha...

Journal: :Environmental science & technology 2015
Scott P Egan Erin Grey Brett Olds Jeffery L Feder Steven T Ruggiero Carol E Tanner David M Lodge

Invasive species introduced via the ballast water of commercial ships cause enormous environmental and economic damage worldwide. Accurate monitoring for these often microscopic and morphologically indistinguishable species is challenging but critical for mitigating damages. We apply eDNA sampling, which involves the filtering and subsequent DNA extraction of microscopic bits of tissue suspende...

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