Here's why:
* Population ecology specifically studies how populations of organisms change over time. It examines factors like birth rates, death rates, immigration, emigration, and how these factors influence population size, distribution, and structure.
* Other types of ecology focus on broader levels of organization. For example, community ecology examines interactions between different species within an ecosystem, while ecosystem ecology studies the flow of energy and nutrients within an entire ecosystem.
Therefore, population ecology is the most relevant field for understanding dynamic changes within a single species.
