Spatial distribution of two chironomid species in the bottom sediment of lough neagh, Northern Ireland

摘要: Distribution patterns in the larvae of two chironomid species with contrasting ecological traits, Ckironomus anthracinus Zetterstedt and Procladius signatus (Zetterstedt), were examined by taking replicate samples from Lough Neagh, Northern Ireland. The showed clear differences both vertical horizontal distributions. In terms distribution P. restricted to top 3 cm layer sediment, while C. most abundant 3–9 layer. Larvae rarely occurred below 12 sediment surface. departed significantly random distribution, though dispersion different between two. demonstrated a more strongly aggregated pattern than anthracinus. latter tendency towards regular which may be related its sedentary, territorial habit. Observed spatial these ...