Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
K-selected species are organisms that have low reproductive rates, produce fewer offspring, and have longer lifespans. They typically inhabit stable environments where resources are consistently available.
A species that has a disproportionately large impact on its environment relative to its abundance, often playing a critical role in maintaining ecosystem balance.