Assessing the performance of four indicative analysis devices for ballast water compliance monitoring, considering organisms in the size range ≥10 to <50 μm

To minimize the global transfer of harmful aquatic organisms and pathogens, the International Maritime Organization (IMO) has introduced the standard in Regulation D-2 to limit the number of viable organisms in ballast water discharged by ships. To meet the standard, many ships are installing ballas...

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Published in:Journal of environmental management 2022-09, Vol.317, p.115300-115300, Article 115300
Main Authors: Casas-Monroy, Oscar, Kydd, Jocelyn, Rozon, Robin M., Bailey, Sarah A.
Format: Article
Language:English
Subjects:
Aquatic invasive species
Autotrophs
ballast water
Ballast water management
Ballast water treatment
Canada
compliance
Compliance monitoring devices
environmental management
Heterotrophs
microscopy
Phytoplankton
uncertainty
water management
water uptake
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creator Casas-Monroy, Oscar
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description To minimize the global transfer of harmful aquatic organisms and pathogens, the International Maritime Organization (IMO) has introduced the standard in Regulation D-2 to limit the number of viable organisms in ballast water discharged by ships. To meet the standard, many ships are installing ballast water management systems. Concurrently, regulators are looking for indicative analysis devices able to assess compliance with Regulation D-2, producing rapid, accurate and reliable results while being easy to operate. The purpose of this research is to compare four indicative analysis devices against detailed microscopy for measuring the size class of organisms ≥10 to
doi_str_mv 10.1016/j.jenvman.2022.115300
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Indicative analysis devices also were challenged with natural environmental samples containing different organism abundance levels, ranging from low (nominally &lt;10 cells mL−1) to high (nominally &gt;150 cells mL−1) during laboratory tests. While the indicative analysis devices examined during this research produced numeric estimates having weak correlations with the standard reference method, categorical outcomes (above/below the D-2 standard) had high agreement (89% or better) when assessing ballast water samples, but lower agreement (67% or poorer) during laboratory tests. There was a relatively high rate of false negative results measured by all devices during laboratory tests. 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Indicative analysis devices also were challenged with natural environmental samples containing different organism abundance levels, ranging from low (nominally &lt;10 cells mL−1) to high (nominally &gt;150 cells mL−1) during laboratory tests. While the indicative analysis devices examined during this research produced numeric estimates having weak correlations with the standard reference method, categorical outcomes (above/below the D-2 standard) had high agreement (89% or better) when assessing ballast water samples, but lower agreement (67% or poorer) during laboratory tests. There was a relatively high rate of false negative results measured by all devices during laboratory tests. 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Indicative analysis devices also were challenged with natural environmental samples containing different organism abundance levels, ranging from low (nominally &lt;10 cells mL−1) to high (nominally &gt;150 cells mL−1) during laboratory tests. While the indicative analysis devices examined during this research produced numeric estimates having weak correlations with the standard reference method, categorical outcomes (above/below the D-2 standard) had high agreement (89% or better) when assessing ballast water samples, but lower agreement (67% or poorer) during laboratory tests. There was a relatively high rate of false negative results measured by all devices during laboratory tests. 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subjects Aquatic invasive species
Autotrophs
ballast water
Ballast water management
Ballast water treatment
Canada
compliance
Compliance monitoring devices
environmental management
Heterotrophs
microscopy
Phytoplankton
uncertainty
water management
water uptake
title Assessing the performance of four indicative analysis devices for ballast water compliance monitoring, considering organisms in the size range ≥10 to <50 μm
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