Comparison of mayfly (Ephemeroptera) taxocenes of permanent and intermittent Central European small streams via species traits

0355678 - BC 2011 RIV PL eng J - Journal Article
Řezníčková, P. - Soldán, Tomáš - Pařil, P. - Zahrádková, S.
Comparison of mayfly (Ephemeroptera) taxocenes of permanent and intermittent Central European small streams via species traits.
Biologia. Roč. 65, č. 4 (2010), s. 720-729. ISSN 0006-3088. E-ISSN 1336-9563
R&D Projects: GA ČR GA206/06/1133; GA AV ČR 1QS500070505
Grant - others:Ministry of the Environment of the Czech Republic(CZ) MZP0002071101
Institutional research plan: CEZ:AV0Z50070508
Keywords : Ephemeroptera * drought survival * species traits
Subject RIV: EH - Ecology, Behaviour
Impact factor: 0.609, year: 2010

The recurrent drying out of small streams in past decades has shown an urgent need to pay attention to the impact of global climate change. The objectives of this study were to describe the effect of drying out on the composition of the mayfly taxocene and evaluate the relevance of individual species traits for survival of mayflies to drying out. The mayfly taxocenes of two model localities, one at an intermittent and one at a permanent brook, were investigated in 2002, 2003 and 2005. Compared with the permanent stream, the taxocene of the intermittent stream was short of nine species, foremost rheobionts and high oxygen demand species. To explain further differences between both stream types in survival and recolonisation ability, 15 species traits were evaluated. These included so-called "ecological traits" (e.g., habitat and substrate range, density, distribution, current velocity adaptation) and "biological traits" connected with life cycle and larval/adult adaptations.
Permanent Link: http://hdl.handle.net/11104/0194391