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Coastwise ANS: Assessment of Coastwise Traffic Patterns and Managementof Aquatic Nonindigenous Species Risk on NOBOBs and Coastwise Vesselsof the Great Lakes and East Coast of the United States and Canada

Ships that engage in strictly coastwise traffic patterns (e.g., along  the coast of the eastern US and among the ports of the Great Lakes)   do  not have to undergo treatment of ballast water or treat NOBOB tanks  under U.S. law. Preliminary analysis indicates that coastwise   shipping  patterns and ballast water discharges pose a significant risk for  facilitating the secondary spread of nonindigenous species among the  freshwater and estuarine habitats along both the east coast and in   the  Great Lakes.  Yet coastwise shipping activities have not been studied  nor assessed with respect to ANS risk.  In this project we will expand upon previous work (Reid  8- NOBOB-S)  to explore the efficacy of salinity-based treatments of residual  organisms (especially low-salinity tolerant organisms) in ballast  tanks, including those in NOBOB condition. We will focus on coastal  organisms in Great Lakes and other coastal estuarine habitats of the  North American Atlantic coast that are interconnected via coastwise  shipping patterns and will use a detailed analysis of coastwise  traffic to guide us in a risk assessment of the potential for   transfer  of low salinity organisms between these ecosystems/habitats. These  data and assessments are required to make informed predictions and  recommendations for the best combination of management strategies of  ballast water exchange and brine exposures for preventing the  secondary coastal spread of nonindigenous species into the freshwater  and estuarine habitats of the United States. Input will include  experimental and published data on salinity tolerances, coastwise and  Great Lakes shipping patterns, and environmental compatibility   between Great Lakes and U.S. east coast ports.    (AIS); (aquatic invasive species); (ANS); (aquatic nuisance   species); (ballast ship); (ballast ships); (ballast water); (ballast   tank); (ballast tanks)

In progress
Start Date
End Date
Scope of Study
Field Investigation
Scale of Phenomena
Impact of Pollutants
Exotic Species
Treatment / Manufacturing Processes
Economic Instruments Study
Purpose of Project
Program Effectiveness / Regulatory
Special Survey
Trend Assessment
Resource Being Monitored
Biology And Life History
Environmental Requirements / Tolerance
Control And Mitigation
Integrated Control Strategy
Ecosystem Effects
Community Structure
Prevention and Introduction
Establishment of International Protocols
Spread of Established ANS Populations
Mechanisms of Spread
Socio-economic Consideration and Analysis
Shipping and Navigation
Annex Numbers
Review of Pollution from Shipping Sources
Aquatic Nuisance Species

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