Title: alga
Long Title: IUPAC Gold Book - alga
DOI: 10.1351/goldbook.14433
Status: current

Definition
Any of various chiefly aquatic, eukaryotic, photosynthetic organisms, ranging in size from single-celled forms to the giant kelp.

Note
Algae of various species, often unicells, are used for toxicity testing in ecotoxicology. They are an important component of aquatic food webs.

Source
- PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 838 (https://doi.org/10.1351/PAC-REC-08-07-09)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/14433/html
- json: https://goldbook.iupac.org/terms/view/14433/json
- xml: https://goldbook.iupac.org/terms/view/14433/xml

Citation: Citation: 'alga' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14433
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Accessed: 2026-07-01T07:59:16+00:00