Jokijaksoilla

Jokijaksoilla is a Finnish locative plural form derived from jokijakso, a compound of joki (river) and jakso (section or stretch). The word literally means “on river sections” and is used to refer to multiple segments of a river in spatial descriptions.

Grammatically, jokijaksoilla combines the base jokijakso with the locative suffix -illa/-illä, signaling a location on several river segments. It functions primarily as a grammatical form rather than as a standalone concept, and it appears in written Finnish especially in technical or descriptive contexts.

Usage and context, Jokijaksoilla is most commonly found in geography, hydrology, environmental science, and related planning or mapping documents. It helps researchers and planners delineate study areas, monitoring sites, or ecological zones along different parts of a river, rather than describing a single continuous stretch. The plural form allows concise references to multiple sections without repeating the noun.

Example sentence: Tutkimukset tehtiin jokijaksoilla, joilla vedenlaatu mittattiin säännöllisesti. This illustrates how jokijaksoilla conveys location across several river segments within a single statement.

Related terms include jokijakso (a river section) and jokijalostus (a different compound term); in practice, jokijaksoilla is most relevant in technical Finnish describing spatial features along rivers.