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#non-native species

2 public questions tagged with this topic.

SPECIES

What is a typical reason non-native species become invasive?

“Phenotypic plasticity” for what is a typical reason non-native species become invasive. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Management outcomes depend on scale and context: suppressing abundance at one site does not guarantee regional eradication when dispersal reconnects treated and untreated populations. The remaining alternatives—“Presence of natural predators”, “Low reproductive rates”, “Specialized diet”—refer to different states, processes, or scales and therefore do not express

Ref: NCERT Biology Class 12, Ch. 15 Biodiversity and Conservation

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Species Control

Characteristic generally NOT true for invasive species:

The keyed exception is “Less likely to invade species-rich ecosystems.” In the context of characteristic generally not true for invasive species, that statement differs from the governing ecological pattern and must be evaluated against the mechanism rather than accepted from wording alone. Species management must identify the demographic stage and ecological process that most strongly limits population growth. Prevention, early detection, removal, habitat manipulation, and biological control act at different points in an invasion or recovery trajectory. The remaining alternatives—“Greater phe

Ref: Ecology: From Individuals to Ecosystems, Begon et al., 5th Ed., Ch. 21

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