| Subject | English | German |
| gen. | algae growth | Algenwachstum |
| gen. | algae growth | Algenwuchs |
| nat.res. | algae growth | Algenentwicklung |
| environ. | growth of algae | Algenpest (Flos algae) |
| environ. | growth of algae | Algenwachstum (Flos algae) |
| environ. | growth of algae | Algenblüte (Flos algae) |
| gen. | growth of algae | Algenwaschstum (makhno) |