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001-es BibID:	BIBFORM058677
Első szerző:	Árva Diána (hidrobiológus)
Cím:	The relative importance of spatial and environmental processes in distribution of benthic chironomid larvae within a large and shallow lake / Diána Árva, Mónika Tóth, Hajnalka Horváth, Sándor A. Nagy, András Specziár
Dátum:	2014
ISSN:	0018-8158
Megjegyzések:	Although chironomids are popular modelorganisms in ecological research and indicators ofbioassessment, the relative role of dispersal andenvironmental filtering in their community assemblyis still poorly known, especially at fine spatial scales.In this study, we applied a metacommunity frameworkand used various statistical tools to examine therelative role of spatial and local environmental factorsin distribution of benthic chironomid taxa and theirassemblages in large and shallow Lake Balaton,Hungary. Contrary to present predictions on themetacommunity organisation of aquatic insects withwinged terrestrial adults, we found that dispersallimitation can considerably affect distribution ofchironomids even at lake scale. However, we alsorevealed the predominant influence of environmentalfiltering, and strong taxa?environment relationshipswere observed especially along sediment type, sedimentorganic matter content and macrophyte coveragegradients. We account that identified reference conditionsand assemblages along with specified optima andtolerances of the abundant taxa can contribute to ourunderstanding of chironomid ecology and be utilisedin shallow lake bioassessment. Further, we proposethat predictive models of species?environment relationshipsshould better take into account pure spatialstructuring of local communities and species-specificvariability of spatial processes and environmentalcontrol even at small spatial scales.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Hydrobiologia. - 742 : 1 (2014), p. 249-266. -
További szerzők:	Tóth Mónika (1983-) Horváth Hajnalka Nagy Sándor Alex (1956-) (hidrobiológus) Specziár András
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