uncertainty
means the lack of precise knowledge of the input values, which is due to measurement error or to lack of knowledge of the steps required, and the pathways from hazard or risk, when building the scenario being assessed.
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uncertainty
Means the lack of precise knowledge of the input values which is due to measurement error or to lack of knowledge of the steps required, and the pathways from hazard to risk, when building the scenario being assessed.
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unestablished alien
An alien lacking self-maintaining populations outside its natural range, either because it were {sic} unable so far to settle, or is too newly arrived.
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unintentional introduction
unintended introduction made as a result of a species utilising humans or human delivery systems as vectors for dispersal outside its natural range.
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unintentional introduction
An introduction of a species outside its natural range introduced unwittingly by humans or human delivery systems.
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unintentional introduction
introduction of nonindigenous species that occurs as the result of activities other than the purposeful or intentional introduction of the species involved, such as the transport of nonindigenous species in ballast or in water used to transport fish, mollusks or crustaceans for aquaculture or other purposes.
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unintentional introduction
Refers to all other introductions which are not intentional.
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unintentional introduction
unintended introduction made as a result of a species utilising humans or human delivery systems as vectors for dispersal outside its natural range (IUCN 2000).
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unintentional introduction
The inadvertent or accidental transfer of alien organisms ...
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unintentional introductions
The introduction of non-native species as the accidental or incidental consequence of human activities. ...
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