Botany - Ecosystem Question with Solution | TestHub

Pioneer community: The first biotic community that develops in a bare area is termed as a pioneer community. E.g., Lichens on a rock, phytoplanktons in the pond.

In hydrarch succession, pioneer community is formed by the phytoplanktons i.e., the minute microscopic autotrophic organisms like diatoms, unicellular, colonial, or filamentous green algae, and blue-green algae.