The non-living components of an ecosystem are called abiotic components. E.g. stone, air, soil, etc.
Water flow
Unidirectional water … See more

The concept of trophic levels are used in food webs to visualise the manner in which energy is transferred from one part of an ecosystem to another. Trophic levels can be assigned … See more

A food chain is a linear system of links that is part of a food web, and represents the order in which organisms are consumed from one trophic level to the next. Each link in a food chain is … See more

Energy inputs
Energy sources can be autochthonous or allochthonous.
• Autochthonous … See more

The living components of an ecosystem are called the biotic components. Streams have numerous types of biotic organisms that live in them, including bacteria, primary producers, insects and other invertebrates, as well as fish and other vertebrates. See more

Diversity, productivity, species richness, composition and stability are all interconnected by a series of feedback loops. Communities can have a series of complex, direct … See more

Local species richness
Large rivers have comparatively more species than small streams. Many relate this pattern to the greater area and volume of larger systems, as well as an increase in habitat diversity. Some systems, however, show a … See more