What term describes an ecological transition zone where two distinct biological communities or biomes meet and integrate, such as the boundary between a forest and an open grassland?
Answer and explanation
Correct answer: A. Ecotone
- Step 1: Ecosystem boundaries in nature are rarely sharp barriers, frequently forming transitional boundary zones.
- Step 2: An ecotone possesses a unique blend of species from both bordering ecosystems and frequently exhibits higher species richness and population densities than either adjacent community alone, a phenomenon known as the 'edge effect'.
Answer
Ecotone
Why not the others: 'Climax community' A climax community is the stable, mature biological community reached at the end of ecological succession; 'Ecological niche' An ecological niche describes the complete functional role, habitat requirements, and resource interactions of a specific species; 'Biome' A biome is a large regional geographical unit of distinctive plant and animal communities determined by climate.
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