J 2009

Risk analysis of riparian trees and large woody debris in the managed river ecosystems (case study from the National park Podyjí, Czech Republic)

MÁČKA, Zdeněk and Martin BRAUN

Basic information

Original name

Risk analysis of riparian trees and large woody debris in the managed river ecosystems (case study from the National park Podyjí, Czech Republic)

Name in Czech

Riziková analýza břehových porostů a říčního dřeva ve vodohospodářsky využívaných říčních ekosystémech (případová studie z NP Podyjí, Česká republika)

Authors

MÁČKA, Zdeněk (203 Czech Republic, guarantor) and Martin BRAUN (203 Czech Republic)

Edition

Geoscape, Ústí nad Labem, Jan Evangelista Purkyne University, 2009, 1802-1115

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

Earth magnetism, geodesy, geography

Country of publisher

Czech Republic

Confidentiality degree

is not subject to a state or trade secret

RIV identification code

RIV/00216224:14310/09:00029302

Organization unit

Faculty of Science

Keywords (in Czech)

vegetační doprovod; říční dřevo; říční ekosystém; národní park Podyjí/Thayatal; Česká republika;

Keywords in English

riparian vegetation; large woody debris; fluvial ecosystem; national park Podyjí/Thayatal; Czech Republic;

Tags

International impact, Reviewed
Changed: 26/5/2009 14:46, doc. RNDr. Zdeněk Máčka, Ph.D.

Abstract

V originále

Riparian trees and large woody debris (LWD) have become recently the subject of research also in the Czech Republic. The presented paper deals with the mapping and measurement of LWD in the riparian zone of the Dyje River upstream of the water reservoir Znojmo. The main objective of the study was to find out the number, dimensions, volume and spatial distribution of individual LWD pieces as well as LWD accumulations. Mapping of the LWD was initiated by the hazardous situation during the flood in March 2006, when the large amount of woody debris was transported to Znojmo reservoir and threatened its earth dam. Mapping in the 3.4 km long stretch of the Dyje River showed the presence of 1,108 pieces of LWD which represents 215 m3 of tree biomass. Altogether 110 wood jams are present which are located within the riparian zone. Transport potential of the river during floods is high, however, highly sinuous valley morphology and well developed riparian vegetation inhibit the transport of LWD for long distances.

Links

GA205/08/0926, research and development project
Name: Environmentální význam mrtvého dřeva v říčních ekosystémech
Investor: Czech Science Foundation, Environmental significance of the woody debris in river ecosystems