The effects of river patterns on riparian vegetation: A comparison of anabranching and single-thread incised channels

Moravian Geographical Reports

Šala Vladimír¹  Škarpich Václav²  Galia Tomáš²  Horáček Matěj²  Kapustová Veronika² 

[1] Czech Hydrometeorological Institute – Ostrava Branch, Ostrava, Czech Republic;Department of Physical Geography and Geoecology, Faculty of Science, University of Ostrava, Ostrava, Czech Republic;

关键词: riparian vegetation;    channel pattern;    phytosociological survey;    multivariate data analysis;    the morávka river;    outer western carpathians;    czech republic;   

DOI  :  10.1515/mgr-2016-0014

来源: DOAJ

【 摘 要 】

Riparian vegetation reflects the current conditions and the dynamics of streams. The floodplain vegetation along the watercourse of the Morávka River was subject to study in this project. In some reaches, the river has the natural character of an anabranching gravel-bed stream; in contrast, other Morávka R. reaches are incised into the bedrock. These cases were used to assess potential changes in vegetation conditions as evidence of negative processes taking place in the gravel-bed streams of the Beskydy Mts. The results demonstrate a higher biodiversity in the floodplain along the anabranching river channel. In contrast, the floodplain along the incised river channel shows low biodiversity values. Redundancy analysis was used to determine the relationships between plant species composition, distance from the main channel and relative elevation from the mean water level of the main channel. In addition, the results show a higher degree of change in plant species composition on the floodplain along the incised river channel. The analysis of floodplain groundwater fluctuations shows a decreasing trend in the annual maximum groundwater level.

【 授权许可】

Unknown