Alien Plant Invasion Flashcards

1
Q

Alien plants

A

Plant taxa in a given area whose presence there is due to intentional or accidental introduction as a result of human activity

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2
Q

Naturalized plants

A

Alien plants that reproduce consistently and sustain populations over more than one life cycle without direct intervention by humans; they often recruit offspring freely, and do not necessarily invade natural, semi‐natural or human‐made ecosystems

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3
Q

Invasive plants

A

Alien plants that produce reproductive offspring, often in very large numbers, at considerable distances from parent plants, and thus have the potential to spread over a considerable area

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4
Q

Weeds

A

Plants (not necessarily alien) that grow in sites where they are not wanted and which usually have detectable economic or environmental effects. [synonyms: plant pests, harmful species; problem plants]

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5
Q

Environmental weeds

A

alien plant taxa that invade natural vegetation, usually adversely affecting native biodiversity and/or ecosystem functioning

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6
Q

Transformers

A

a subset of invasive plants which change the character, condition, form or nature of ecosystems over a substantial area relative to the extent of that ecosystem

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7
Q

Invasion meltdown

A

Synergistic interactions between invasive species to accelerate invasions

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8
Q

Good invader

A
Phenotypic plasticity
Good competitor
Taxonomy
Reproduction and dispersal
-short juvenile period (many small seeds)
-vegetative production
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9
Q

Invasive species

A

Lantana camara

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10
Q

NEMBA Categories

A

Cat 1: declared weeds
Cat 2: plant invaders but commercial plantation
Cat 3: ornamental plant invaders
Bush encroachers: indigenous but must be managed

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