refugium

Definitions

1. Any local environment that has escaped regional ecological change and therefore provides a habitat for endangered species.
2. A separate section of a fishtank that shares the same water supply, used for denitrification, plankton production, etc.

Equivalents

Examples

“Beetles fly⟳, many ants send⟳ forth massive swarms of reproductive alate females and males, arachnids and insect predators emerge⟳ from their hidden refugia, and termite swarm.”

CEFR level