Mayflies (Ephemeroptera) as indicators of environmental changes in the past five decades: a case study from the Morava and Odra River Basins (Czech Republic)

摘要

1. Large-scale and intensive human activities have caused widespread and profound changes in the diversity and structure of biological communities. Historical or long-term data are an important tool for the quantification and understanding of temporal changes. A comparison of Ephemeroptera collected at 60 streams in the Morava and Odra river basins in two periods, 1955-1960 and 2006-2011, enabled an estimate of changes in their assemblages induced by various human pressures to be made.