期刊
WATER
卷 14, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/w14071014
关键词
species; morphospecies; morphotype; freshwater ecology; lotic and lentic habitat; self-organizing maps
Many hydrobiological studies have examined the factors affecting the distribution of species within the Chironomidae family. This research considers the most important factors and introduces the concept of "morphotaxon" to describe the ecological responses of Chironomidae. The validity of this concept is supported by the study, except for a few exceptions represented by species-rich genera.
Many hydrobiological studies have dealt with the autecology of species within the family Chironomidae and discussed factors affecting species distribution. The aim of the present research is to consider the most important factors affecting chironomid species distribution. Habitat type (lentic, lotic, krenal, rhithral, etc.), water temperature, conductivity, and trophic status are confirmed key factors controlling their assemblage structure. Here, we introduce the term morphotaxon as the taxonomic level, intermediate between genus and species, more suitable to describe the ecological responses of Chironomidae. The present uncertainty related to species identification is at the base of the proposal, with the assumption that species belonging to the same morphotaxon have similar ecological needs. In this study, this hypothesis was found to be valid, with few exceptions represented by species-rich genera (e.g., Tanytarsus, Paratanytarsus). The morphotaxon can be viewed as an interim measure waiting for the implementation of new complementary approaches, such as species identification with molecular methods.
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