National Repository of Grey Literature 39 records found  beginprevious30 - 39  jump to record: Search took 0.00 seconds. 
Cray fish as bioindicators of human impact in freshwater ecosystems in CR - sensitivity of model species on selected toxic compounds and case study from the model catchment
MAHOVSKÁ, Ivana
This thesis deals with monitoring the occurrence of crayfish in selected river basins in the western Bohemia, considering the human impact on freshwater ecosystems and his influence on crayfish and other aquatic organisms. The selected river basin territory was Úhlava, Úslava and Otava. In the localities, numerical and species-wise representation of crayfish was monitored by finding data from the Agency for Nature Conservation and Landscape of Czech Republic database. The flow and environment characteristics were also monitored. This thesis focuses on water quality in streams of selected major river basins, Úhlava, Úslava and Otava rivers in the period from 2006 to 2011. Results of the findings show a sympatric occurrence of original species, stone crayfish (Austropotamobius torrentium), noble crayfish (Astacus astacus) and part of the original danube crayfish (Astacus leptodactylus) with invasively spreading species of spiny-cheek crayfish (Orconectes limosus) and signal crayfish (Pacifastacus leniusculus). With respect to this fact, the sensitivity of spiny-cheek crayfish (Orconectes limosus) and signal crayfish (Pacifastacus leniusculus) are evaluated in a form of own test results on acute toxicity. The thesis compared current results of occurrence and the protection of crayfish in the Czech Republic and abroad. The conclusion of this thesis is a proposal of a freshwater biomonitoring system, using the crayfish.
Vliv hospodářských zásahů na změnu v biologické rozmanitosti ve zvláště chráněných územích: Monitorování změn biologické rozmanitosti v důsledku globálního charakteru a ve vztahu k hospodaření a využívání území NPR Božídarské rašeliniště
Okresní muzeum, Chomutov ; Farkač, Jan ; Roth, Jiří ; Wagner, Bohdan ; Němcová, Lenka ; Tejrovský, Vít ; Ondráček, Čestmír
Cílem průzkumů Božídarského rašeliniště bylo v roce 2001 doplňování druhové bohatosti jednotlivých skupin posuzovaných organismů (lišejníky, mechy, houby, vyšší rostliny, vybraní bezobratlí a obratlovci). U vyšších rostlin byl průzkum dále zaměřen na přesnou lokalizaci jednotlivých populací, výpisy dalších údajů z historických pramenů a posouzení zastoupení zvláště chráněných a ohrožených druhů v průběhu let.
Ground and rove beetles (Coleoptera, Staphylinidae) of NNR Brouskův Mlýn and their use in biomonitoring of habitat state
Boháč, Jaroslav
In the NNR Brouskův Mlýn, there more than 150 species of ground beetle and rove beetle families occure at biotopes of flooded habitats. The species are specialized to flooding.

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