primary producer
In ecology, an organism that produces organic matter from inorganic substances, typically through photosynthesis or chemosynthesis. Used in scientific contexts.
Plants, as primary producers, support the foundation of the ecosystem.
生産者 is a broader term meaning 'producer' in general, while 一次生産者 specifically refers to the first trophic level in ecology.
Compound of 一次 (primary, first-order) and 生産者 (producer). A direct calque of the English ecological term 'primary producer'.