Which concept refers to organisms of the same species living together in a given area?

The concept that refers to organisms of the same species living together in a given area is a population. A population encompasses all individuals of a particular species that inhabit a specific geographic region at the same time. This group shares resources, interacts with one another, and has the potential to breed, which makes populations a fundamental unit of biological study in ecology.

In contrast, a community refers to all of the different species living and interacting within a certain area. An ecosystem includes both the living organisms (communities) and the non-living components (such as water, soil, and climate) of an environment. An organism is the individual living entity, which is distinct from a population that consists of multiple individuals of the same species. Understanding the definition of a population is crucial in the study of ecology and conservation biology, as it helps in assessing species health, biodiversity, and the dynamics of species interactions within their environments.