نتایج جستجو برای: ballast water

تعداد نتایج: 551909  

Journal: :Marine pollution bulletin 2007
Lisa A Drake Martina A Doblin Fred C Dobbs

A prominent vector of aquatic invasive species to coastal regions is the discharge of water, sediments, and biofilm from ships' ballast-water tanks. During eight years of studying ships arriving to the lower Chesapeake Bay, we developed an understanding of the mechanisms by which invasive microorganisms might arrive to the region via ships. Within a given ship, habitats included ballast water, ...

Journal: :Applied and environmental microbiology 2004
Martina A Doblin Linda C Popels Kathryn J Coyne David A Hutchins S Craig Cary Fred C Dobbs

It is well established that cyst-forming phytoplankton species are transported in ships' ballast tanks. However, there is increasing evidence that other phytoplankton species which do not encyst are also capable of surviving ballast transit. These species have alternative modes of nutrition (hetero- or mixotrophy) and/or are able to survive long-term darkness. In our studies of no-ballast-on-bo...

Journal: :Ecological applications : a publication of the Ecological Society of America 2013
Deborah A Reusser Henry Lee Melanie Frazier Gregory M Ruiz Paul W Fofonoff Mark S Minton A Whitman Miller

Ballast water discharges are a major source of species introductions into marine and estuarine ecosystems. To mitigate the introduction of new invaders into these ecosystems, many agencies are proposing standards that establish upper concentration limits for organisms in ballast discharge. Ideally, ballast discharge standards will be biologically defensible and adequately protective of the mari...

2007
Martina A. Doblin Kathryn J. Coyne Johanna M. Rinta-Kanto Steven W. Wilhelm Fred C. Dobbs

We measured the presence, viability and potential toxicity of cyanobacteria in ships’ ballast tanks during three domestic voyages through the North American Great Lakes. Using molecular methods, the toxin-producing forms of Microcystis and Anabaena were monitored in ballast water after ships’ ballast tanks were filled at their first port of call, and at subsequent ports as ships transited the G...

2015
Robert C. Cope Thomas A. A. Prowse Joshua V. Ross Talia A. Wittmann Phillip Cassey

Biological invasions have the potential to cause extensive ecological and economic damage. Maritime trade facilitates biological invasions by transferring species in ballast water, and on ships' hulls. With volumes of maritime trade increasing globally, efforts to prevent these biological invasions are of significant importance. Both the International Maritime Organization and the Australian go...

Journal: :Marine pollution bulletin 2009
Christina Simkanin Ian Davidson Maurya Falkner Mark Sytsma Gregory Ruiz

Ballast water is a dominant mechanism for the interoceanic and transoceanic dispersal of aquatic non-native species (ANS), but few studies have addressed ANS transfers via smaller scale vessel movements. We analyzed ballast water reporting records and ANS occurrence data from four US West Coast port systems to examine patterns of intra-coastal ballast water transfer, and assess how ballast tran...

Journal: Pollution 2020

Ships transport about 80 percent of world trade and transfer approximately three to five billion tons of ballast water internationally every year. Due to the likely presence of pollutants, the ballast water discharged by ships can have negative effects on aquatic ecosystems. This study was conducted on 10 ships that entered the Bushehr port to determine the effectiveness of the ballast water ex...

2015
Irena Kaczmarska James M. Ehrman Sarah Bailey

Most harmful diatoms belong to the marine, planktonic genus Pseudo-nitzschia and are responsible for amnesic shellfish poisoning through the production of domoic acid. Fifteen Pseudo-nitzschia species, nine of them toxigenic (approximately 60% of the species found in our samples) were recovered from 185 ship ballast tanks (water and sediment) destined for Canadian ports. Our results demonstrate...

Journal: :Marine pollution bulletin 2013
Katharine J Carney Oihane C Basurko Kayvan Pazouki Sara Marsham Jane E Delany D V Desai A C Anil Ehsan Mesbahi

As implementation of the Ballast Water Convention draws nearer a major challenge is the development of protocols which accurately assess compliance with the D-2 Standard. Many factors affect the accuracy of assessment: e.g. large volume of ballast water, the shape, size and number of ballast tanks and the heterogeneous distribution of organisms within tanks. These factors hinder efforts to obta...

2005
JOHN M. DRAKE DAVID M. LODGE MARK LEWIS

—Introductions of non-indigenous species in ballast water are one of the greatest threats to freshwater and marine ecosystems worldwide. New approaches to reducing the release of organisms from ballast water are under consideration nationally and internationally. Unfortunately, the development of scientifically defensible policy for controlling introductions from ballast water has been retarded...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید