Assertion: organic carbon | /r/HasProperty | allochthonous
Facets:
value: by atmospheric deposition
type: CAUSE
Source sentences:
text: Organic carbon can be allochthonous, or sourced from outside the system (e.g. by atmospheric deposition or transported long distances via stream flow) or it can be autochthonous, or sourced from the immediate surroundings of the system (e.g. plant and microbial matter and sediments/soils within the catchment).