Biotic factors refer to all the living components of an ecosystem. Living organisms are often divided into categories such as producers, consumers and decomposers.

Ecosystems are made up of living – or biotic – organisms, like plants and animals;which rely on nonliving – or abiotic – things, like the sun and the weather,to survive and thrive.

The biotic parts of the ecosystem, which include bacteria, flora and fauna, have a complex relationship with the abiotic components - changing one will lead to a change in the other.

Plant ecology, terrestrial ecosystem science. Major areas of research include the nutritional ecology of alpine plants, resource use by plant communities, abiotic and biotic constraints on primary ...