7. Issues and Challenges in Aquatic Invasive Alien Species - Seafdec

Glossary
Term
Alien species
Ballast water
Baseline port survey
Establishment
Aquatic Species
Fouling organisms
Intentional introduction
Introduction
Invasive alien species
Native species
Pathway
Probiotic
Risk
Risk analysis
Unintentional
introduction
Vector
Definition
A species, subspecies or lower taxon, introduced outside its natural past or present
distribution; includes any part, gametes, seeds, eggs, or propagules of such species
that might survive and subsequently reproduce.
Any water and associated sediments used to manipulate the trim and stability of
a vessel.
Biological surveys that determine the baseline level of introduced marine species
in a port.
The process of an alien species in a new habitat successfully producing viable
offspring with the likelihood of continued survival.
Includes any of the varieties of marine, brackish water or fresh water fishes,
crustaceans, aquatic molluscs, marine sponges, sea cucumber, aquatic plants
and other aquatic life but does not include turtles or their eggs.
Animals and plants, such as barnacles, mussels and seaweeds that attach to
human-made substrates, such as piers, navigation buoys and the bottom of ships.
The deliberate movement and/ or release by humans of an alien species outside
its natural range.
The movement by human agency, indirect or direct, of an alien species outside of
its natural range (past or present). This movement can be either within a country
or between countries or areas beyond national jurisdiction.
An alien species whose introduction and/ or spread threaten biological diversity.
A native species is a species, subspecies or lower taxon occurring within its
natural range and dispersal potential (i.e., within the range it occupies naturally or
could occupy without direct or indirect introduction or care by humans.
As applicable: The geographic route by which a species moves outside its natural
range (past or present); The corridor of introduction (e.g road, canal, tunnel) and /
or The human activity that gives rise to an intentional or unintentional introduction.
A live microbial adjunct which has a beneficial effect on the host by modifying the
host-associated or ambient microbial community, by ensuring improved use of the
feed or enhancing its nutritional value, by enhancing the host response towards
disease, or by improving the quality of its ambient environment.
The likelihood and magnitude of an event.
1. Assessment of the consequences of the introduction and of the likelihood of
establishment of an alien species using science-based information (i.e. risk
assessment), and 2. Identification of measures that can be implemented to reduce
or manage these risks (i.e., risk management), taking into account socio-economic
and cultural considerations.
All other introductions which are not intentional.
The physical means or agent (i.e. aeroplane, ship) in or on which a species is
transported or moves outside its natural range (past or present). Ballast water,
ships’ hulls, and the movements of commercial oysters are examples of vectors.
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