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Journal Article

Seasonal dynamics of moss-dwelling chironomid communities

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Nolte,  Ulrike
Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Nolte, U. (1991). Seasonal dynamics of moss-dwelling chironomid communities. Hydrobiologia, 3, 197-211.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-CA10-B
Abstract
Chironomid communities of mosses in a small upland stream in central Germany were highly dynamic across the year with respect to their abundance, biomass and dominant taxa. During 1988 semi-submersed mosses near a main spring and those occurring some 700 m downstream were compared with permanently submersed mosses in immediate vicinity of the downstream site. All chironomids sampled were conspicuously small, with nearly 98% < 5 mm in length. 65 Chironomid spp. from 26 genera were found, with a higher diversity near the source and a change in dominant taxa along the upper stream section. Results suggest that the dominance of chironomid taxa depended mainly on the location of the moss along the stream, whereas abundance and biomass were determined mainly by constancy in the ambient discharge as well as the factors influenced by this (e.g. temperature, detritus deposition). A trend was seen towards a seasonal succession among the chironomid taxa colonizing lotic mosses.