Effects of Deadwood on Macroinvertebrate Assemblages in Three Sand-Type Lowland Streams

The objective of the manuscript was to study effects dead wood on macroinvertebrates (MI) assemblages occupying different habitat patches. Three streams were studied, with control and wooded sections in each stream from which MI sampled for all substrate types (wood, fine detritus, gravel, sand). This contribution deals three German Ihle, Nieplitz, Verlorenwasser, belong type 14 (sand-dominated lowland stream) are located landscape unit Fläming. stream, where large could be most influential, has been relatively understudied. focused quantifying distribution macroinvertebrate taxonomy performing statistical analysis densities regard type. area-specific invertebrate differentiated density, dry matter density taxonomic richness invertebrates. In addition macroinvertebrates, a special focus aquatic semi-aquatic insects. There significant differences between wooden sections. (individual species richness) detritus only Verlorenwasser significantly positively affected (two or times) by deadwood. Detritus Nieplitz contained more sensitive like EPT than On other hand, no difference populations determined sand compared water bodies, promoted investigated indicators macrozoobenthos as colonization Verlorenwasser. Ihle also although not richness. Two correlations identified. that present inhibited. Additionally, larger area encouraged. influence deadwood position investigated, but there difference. Incline bridges, flow guides parallel settled similar quality quantity.