scholarly journals Combining Ballast Water Exchange and Treatment To Maximize Prevention of Species Introductions to Freshwater Ecosystems

2015 ◽  
Vol 49 (16) ◽  
Author(s):  
Elizabeta Briski ◽  
Stephan Gollasch ◽  
Matej David ◽  
R. Dallas Linley ◽  
Oscar Casas-Monroy ◽  
...  
Keyword(s):  
Ballast Water ◽  
Water Exchange ◽  
Freshwater Ecosystems ◽  
Species Introductions

Diapausing zooplankton eggs remain viable despite exposure to open-ocean ballast water exchange: evidence from in situ exposure experiments

2010 ◽  
Vol 67 (2) ◽  
pp. 417-426 ◽  
Author(s):  
Derek K. Gray ◽  
Hugh J. MacIsaac
Keyword(s):  
Great Lakes ◽  
Cold Storage ◽  
Ballast Water ◽  
Water Exchange ◽  
Egg Viability ◽  
Ocean Water ◽  
Diapausing Eggs ◽  
Species Introductions ◽  
Ballast Tanks

To reduce the transfer of nonindigenous species, regulations require transoceanic ships to exchange ballast with ocean water before discharging into the Great Lakes. Although ballast water exchange (BWE) is effective for live freshwater animals, laboratory experiments provide mixed results with regards to its impact on diapausing zooplankton eggs. We conducted an in situ test of the effectiveness of BWE for treating diapausing eggs in ballast sediments. Incubation chambers containing ballast sediment were placed in ballast tanks of cargo vessels transiting from North America to Europe. Each vessel had paired ballast tanks, one of which remained filled with Great Lakes water (control), while the second was exchanged with mid-ocean water. Laboratory viability tests were then conducted to compare viability of eggs recovered from sediments placed in both treatments, as well as identical sediments that remained at the laboratory in cold storage. No significant differences in egg viability were detected between treatments, but more species hatched from sediment that remained in cold storage. Results indicate that physical conditions in ballast tanks may affect egg viability, but saltwater exposure does not eliminate the risk of species introductions via diapausing eggs. Strategies that minimize sediment accumulation in ballast tanks can reduce the risk of species introductions via diapausing eggs.

scholarly journals Ballast Water Exchange Plus Treatment Lowers Species Invasion Rate in Freshwater Ecosystems

2020 ◽  
Vol 55 (1) ◽  
pp. 82-89
Author(s):  
Johanna N. Bradie ◽  
David Andrew R. Drake ◽  
Dawson Ogilvie ◽  
Oscar Casas-Monroy ◽  
Sarah A. Bailey
Keyword(s):  
Ballast Water ◽  
Water Exchange ◽  
Freshwater Ecosystems ◽  
Species Invasion ◽  
Invasion Rate

EVALUATING AN INVASIVE SPECIES POLICY: BALLAST WATER EXCHANGE IN THE GREAT LAKES

2007 ◽  
Vol 17 (3) ◽  
pp. 655-662 ◽  
Author(s):  
Christopher Costello ◽  
John M. Drake ◽  
David M. Lodge
Keyword(s):  
Invasive Species ◽  
Great Lakes ◽  
Ballast Water ◽  
Water Exchange ◽  
Invasive Species Policy

Numerical Simulation of Sloshing of Water in Ship Tanks During Sequential Ballast Water Exchange in Seaways

2002 ◽  
Author(s):  
Makoto Arai ◽  
Humberto S. Makiyama ◽  
Liang-Yee Cheng
Keyword(s):  
Ballast Water ◽  
Water Exchange ◽  
Sea Water ◽  
Marine Pollution ◽  
Aquatic Organisms ◽  
Exchange Method ◽  
Ballast Tank ◽  
Open Sea ◽  
Merchant Ship ◽  
Ballast Tanks

In recent years, ballast water has been blamed for a variety of marine pollution problems, particularly for transporting harmful aquatic organisms from one part of the world to another and damaging the ecosystem of the new areas. A relatively simple mechanism to control this problem is to exchange ballast water on the high seas between ports in order to remove invasive species before the ship reaches its destination. However, some issues regarding ballast exchange on the open sea need to be addressed before this operation is introduced. One of them is the sloshing of the sea water in the ballast tank. In this paper, ballast water exchange on the open sea by means of the Sequential exchange method is simulated. Irregular seaways are generated from the ISSC spectrum, and the sloshing response of the water in the ballast tanks of a large merchant ship is numerically computed by using a finite difference code developed by the authors. The results showed that there is little possibility that severe sloshing presents a serious problem in regard to the ballast tank’s strength, especially in the case of a bulk carrier whose tanks are generally short in length, with sloshing anticipated only at the low water level.

scholarly journals Efficacy of open-ocean ballast water exchange: a review

2016 ◽  
Vol 7 (4) ◽  
pp. 375-388 ◽  
Author(s):  
Vanessa Molina ◽  
Lisa Drake
Keyword(s):  
Ballast Water ◽  
Water Exchange ◽  
Open Ocean

scholarly journals Ballast Water Exchange and Invasion Risk Posed by Intracoastal Vessel Traffic: An Evaluation Using High Throughput Sequencing

2018 ◽  
Vol 52 (17) ◽  
pp. 9926-9936 ◽  
Author(s):  
John A. Darling ◽  
John Martinson ◽  
Yunguo Gong ◽  
Sara Okum ◽  
Erik Pilgrim ◽  
...  
Keyword(s):  
High Throughput ◽  
Ballast Water ◽  
Water Exchange ◽  
High Throughput Sequencing ◽  
Invasion Risk
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