Biology and Biodiversity of River Systems
نویسنده
چکیده
In this chapter several approaches towards zonation and continuity of biocommunities in streams are analyzed. In older literature, rivers were described in well defined stretches from source to mouth. The biocommunities were described as entities in those stretches. Later, American scientists claimed that a river is a continuum with gradually changing conditions and henceforth gradually changing biocommunities with much overlap.
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