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National Repository of Grey Literature 24 records found  beginprevious21 - 24  jump to record: Search took 0.01 seconds. 
Restoration of grassland ecosystems in present restoration ecology
 Prach, Karel
The following conclusions have been drawn. (a) Both degradation and restoration seem to be faster on nutrient-rich than on nutrient-poor sites but the latter may be easier encroached by woody species. (b) Restoration is difficult if water and/or nutrient regimes have changed during degradation. (c) Restoration is easier if target species still occur either at the site itself or in its close surroundings. (d) Some restoration measures can be profitable for one group of organisms and detrimental for some others, thus consultancy among experts is needed prior to the start of the restoration. (e) Long-lasting management and monitoring must be guaranteed. Obstacles to successful restoration are also reviewed. Finally, the need of cooperation between scientists and practitioners is emphasised.
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Dragonfly communities of drainage ditches in Radovesická spoil heap.
 TICHÁNEK, Filip
Adult dragonflies colonising drainage ditches were sampled for obtaining data about occurrence and habitat associations of endangered dragonflies and their communities.
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Ecology and conservation of invertebrates at anthropogenic sites
 TROPEK, Robert
This thesis deals with communities of arthropods (and partly also vascular plants) colonising diverse anthropogenic sites. It reveals a conservation potential of these sites and focus on ecological requirements of both whole communities and individual species generalising these findings for usage in restoration of these sites.
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The comparison of diversity on spontaneously re-vegetated and technically reclamed dumps from coal mining in the Most region
 MÁLKOVÁ, Lucie
Sites left to spontaneous vegetation succession and those technically reclamed were studied and compared on dumps in the Most Region, NW Czech Republic. Data were sampled in summer 2008 and 2010. Species composition and species diversity were analyzed using phytosociological reléves arranged along 100m transects. Alfa- and beta-diversity were evaluated. There were significant differences between sites in alfadiversity. Beta-diversity was highest in the spontaneously re-vegetated sites. There were also differences in species composition among the studied sites. I consider using spontaneous succession as appropriate in restoration of land disturbed by brown coal mining. It is a good alternative to expensive technical reclamation.
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National Repository of Grey Literature : 24 records found   beginprevious21 - 24  jump to record:
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