CONTENTS
3
INTRODUCTION............................................................................................................5
Survey of Literature Data Concerning Distribution and Quantitative
Presentation of Mayflies and Stoneflies in the Investigated Area....................................9
MATERIAL AND METHODS......................................................................................17
Material.............................................................................................................17
Methods Used....................................................................................................19
Selection of Localities Studied.............................................................19
Methods of Sampling and Study of Environmental Factors.................25
Methods of Evaluation of Qualitative and Quantitative Changes
in Distribution of Mayflies and Stoneflies.........................................................28
RESULTS.......................................................................................................................36
Qualitative Analysis of Occurrence of Individual Species in the Labe, Odra
and Morava River Basins...................................................................................36
Species Composition of Fauna of Mayflies and Stoneflies................36
The Ephemeroptera..............................................................36
The Plecoptera.....................................................................41
Chorological Analysis of Individual Species.....................................................47
The Ephemeroptera..............................................................47
The Plecoptera.....................................................................48
Species Composition of Investigated Localities and Faunal Exchange............50
The Labe River Basin..........................................................50
The Odra River Basin..........................................................66
The Morava River Basin......................................................69
Distribution, Abundance and Life Cycles of Species Found at Selected
Localities..........................................................................................................76
The Ephemeroptera..............................................................76
The Plecoptera...................................................................106
Characteristics of Individual Species from the Biodiversity Protection
Point of View..................................................................................................136
The Ephemeroptera............................................................136
The Plecoptera...................................................................138
4
Statistical Evaluation of Biodiversity of Mayflies and Stoneflies Found at
Selected Localities of the Labe, Odra and Morava River Basins...................142
Biodiversity of Mayflies and Stoneflies in the Investigated Area:
Q Coefficient....................................................................................142
Multicriterial Analysis......................................................................156
Hierarchic Divisive Classification of Localities................156
Detrended Correspondence Analysis: Ordination
of Species and Localities...................................................162
Prediction of Changes of Investigated Localities............................................167
DISCUSSION AND CONCLUSIONS........................................................................177
Characteristics Features and Origin of Mayfly and Stonefly Fauna in the
Investigated Area............................................................................................177
Specific Factors Affecting Distribution of Mayflies
and Stoneflies...................................................................................177
Historical Factors Forming Mayfly and Stonefly Fauna in the
Investigated Area..............................................................................178
Origin and Chorological Specificity of Central European
Mayflies and Stoneflies...................................................................181
Recent Area Changes and Main Factors Affecting Distribution of Mayflies and Stoneflies in the Investigated Area..........................................................185
Main Factors Limiting Distribution of Mayflies and Stoneflies
in the Investigated Area..................................................................................189
Statistical Methods to Evaluate Changes of Biodiversity
and their Efficiency........................................................................................195
Evaluation According to Q Coefficients...........................................195
Hierarchic Divisive Classification (TWINSPAN)............................200
Detrended Correspondence Analysis (DCA)....................................204
Prediction of Changes and Future Prospects..................................................207
SUMMARY.................................................................................................................213
SOUHRN (SUMMARY IN CZECH)..........................................................................223
REFERENCES.............................................................................................................237
APPENDIX (Tables XIII - XXV)...............................................................................267