What does a belt transect involve?

A belt transect is a method used in ecology to assess the distribution and abundance of organisms in a specific area. This technique involves placing a continuous strip or line—referred to as a transect line—across the area of interest and then systematically laying down quadrats at regular intervals along this line.

By using this method, researchers can determine how various factors—such as changes in environmental conditions—affect species distribution along the transect. As quadrats are sampled at set distances along the transect, it allows for a structured approach to investigate ecological patterns and relationships within the studied area. This systematic approach provides valuable data on species composition and density in different habitat zones.

The other possible answers describe different sampling methods that serve distinct purposes in ecological studies, but they do not capture the specific systematic approach and focus of a belt transect.