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impacts on the landscape: landscape-ecological aspects of the project „Danube-Oder-Elbe Canal“ in the territory of the Czech Republic. Olomouc: Univerzita Palackeho. Darby, S. & Sear D. (2008). River restoration: Managing the Uncertainty in Restoring Physical Habitat. Chicester: John Willey and Sons. Eiseltova, M. (Ed.) (1995). Restoration of Stream Ecosystem - an integrated catchment approach. Gloucester: IWRB Publishing. Klimo, E. & Hager H. (Eds.) (2001). The floodplain forests in Europe: current situation and perspectives. European Forest Institute Research Report

., Adam, D., Vrška, T., Hort, L., Unar, P., Král, K., Šamonil, P., Horal, D., (2008). Tree layer dynamics of the Cahnov-Soutok near-natural floodplain forest after 33 years (1973-2006). European Journal of Forest Research, 127 (4): pp. 337-345. Janík, D., Adam, D., Vrška, T., Hort, L., Unar, P., Král, K., Šamonil, P., Horal, D., (2011). Field maple and hornbeam populations along a 4-m elevation gradient in an alluvial forest. European Journal of Forest Research, 130: pp. 197-208. Klimo, E., Hager, H., (2000). The floodplain forests in Europe. EFI, Leiden, Boston, Köln

sytému ekologické stability. Doplněk Publisher, Brno, pp 122. Maděra, P. (2003). Změny geobiocenóz lužních lesů. Hab. Thesis, Mendel University of Agriculture and Forestry, Brno, pp 117. Maděra, P., Vukelič, J., Buček, A. & Baričevič, D. (2008). Floodplain forest plant communities. In: Klimo, E., Hager, H., Matić, S., Anić, I. & Kulhavý, J. (Eds.), Floodplain forests of the temperate zone of Europe. pp 102-159. Lesnická práce, Kostelec nad Černými lesy Machar, I. (2001a). Krajinně ekologické hodnocení lužních lesů v Litovelském Pomoraví. PhD. thesis. Mendel

, 591 p. Jakubec, B. (1981). Vodohospodářské úpravy na jižní Moravě. Lesnická práce , 5: 204–212. Janík, D., Adam, D., Vrška, T., Hort, L., Unar, P., Král, K., Šamonil, P., Horal, D. (2008). Tree layer dynamics of the Cahnov-Soutok near-natural floodplain forest after 33 years (1973-2006). European Journal of Forest Research , 127 (4): 337–345. Janík, D., Adam, D., Vrška, T., Hort, L., Unar, P., Král, K., Šamonil, P., Horal, D. (2011). Field maple and hornbeam populations along a 4-m elevation gradient in an alluvial forest. European Journal of Forest Research

on spatial distribution of mule deer. Ecology, 83 : 530-544. Kirchner, K., Ivan, A. (1999). Anastomosing river system in PLA Litovelské Pomoraví. Geologické výzkumy na Moravě a ve Slezsku, VI : 19-20. Klimo, E., Hager, H., (2001). The floodplain forests in Europe: current situation and perspectives. European Forest Institute research report, 10. Koninklijke Brill NV, Leiden, pp 267. Konvička, M., Čížek, L. & Beneš, J. (2006). Ohrožený hmyz nížinných lesů: ochrana a management. Sagittaria, Olomouc. Korňan, M. (2006). Hodnotenie vplyvu lesohospodárskeho

Abstract

The Gabčíkovo hydroelectric power plant has significantly influenced Danube water regime, thus the condition of floodplain forests in the region. Forest condition has been regularly monitored since 1995 using aerial photos. The subject of this study was to improve the procedure of floodplain forest health evaluation based on digital multispectral aerial images. Firstly, the forest mask was created with overall accuracy 89%, and next, tree health was evaluated using defoliation as health indicator. We applied orthogonal transformation of 4 original bands of multispectral imagery into two-dimensional space. Marginal values of digital numbers (DN) of the first component (New Synthetic Channel - NSC1) were defined by fully foliated willow and poplar. The second component (NSC2) was optimised for damage estimation. Calculated DN values of NSC2 represented a perpendicular distance from the line of DN values of the first component. The distance from the line was proportionate to tree damage extent in a given pixel. We generated linear regression model between pair values of NSC2 and defoliation evaluated for 38 trees in the field, respectively, from aerial photos. A decline prediction resulted in r-square equal 0.86. Finally, we used the model to predict defoliation for each picture element (pixel) of the component NSC2.

of water regime and habitat continuity on the plant species composition of floodplain forests. Journal of Vegetation Science 20, 37-48. GLAVAĆ, V., 1975: Das Pruno-Fraxinetum Oberdorfer 53 in Nordwestkroatien. Beiträge zu naturkundlichen Forschung in Südwestdeutschland-DTl 35, 95-101. GLOBEVNIK, L.,MIKO[, M., 2009: Boundary conditions of morfodynamic processes in the Mura River in Slovenia. Catena 79, 265-276. GORŠAK, B., BAKAN, B., 2003: Mura nature park (in Slovenian). Proteus 7, 311-322. GRIME, J. P., 1979: Plant strategies and vegetation processes. Wiley

. Bratislava: Veda, vydavateľstvo SAV . Jurko, A. (1958). Soil-ecological conditions and forest communities of the Podunajská nížina lowland (in Slovak). Bratislava: SAV . Kollár, J., Kubíček, F. & Šimonovič V. (2010). Herb layer production in the willow stands on the Danubian soft-wood floodplain forest sites. Ekológia (Bratislava), 29, 15-19. DO I: 10.4149/ekol_2010_01_15. Kubíček, F. & Brechtl J. (1970). Production and phenology of the herb layer in an oak-hornbeam forest. Biológia, 25, 651-666. Kubíček, F. & Jurko A. (1975). Estimation of above-ground biomass of the herb

Abstract

In soil of floodplain forests along the Danube and Moravia Rivers a rare nematode species Paratrophurus hungaricus Andrássy, 1973 was recorded for the first time from the territory of Slovakia. Presented here are some notes on morphology and ecology of the species observed.

. & Spampinato, G. 1999: Syntaxonomy of hygrophilous woods of the Alno-Quercion roboris . Annali di Botanica 57: 133-146. Čarni, A. 2005: Vegetation of trampled habitats in the Prekmurje region (NE Slovenia). Hacquetia 4: 151-159. Čarni A., Košir, P., Marinček, L., Marinšek, A., Šilc, U. & Zelnik, I. 2008: Komentar k vegetacijski karti gozdnih združb Slovenije v merilu 1:50.000 - list Murska Sobota. PAZU, Murska Sobota. Čermák, J. 1998: Leaf distribution in large trees and stands of the floodplain forest in southern Moravia. Tree Physiology 18: 727-737. Čermák, J. Kučera, J