. "14310" . "P\u0159\u00EDsp\u011Bvek k pozn\u00E1n\u00ED ekologie drobn\u00FDch tok\u016F zne\u010Di\u0161t\u011Bn\u00FDch d\u016Fln\u00EDmi vodami obsahuj\u00EDc\u00ED vysok\u00E9 koncentrace \u017Eeleza a manganu" . "P\u0159\u00EDsp\u011Bvek k pozn\u00E1n\u00ED ekologie drobn\u00FDch tok\u016F zne\u010Di\u0161t\u011Bn\u00FDch d\u016Fln\u00EDmi vodami obsahuj\u00EDc\u00ED vysok\u00E9 koncentrace \u017Eeleza a manganu"@cs . "723255" . "7"^^ . . "80-244-0166-5" . "Small streams in the area of closing uranium mining in the Czech-Moravian Highlands (Czech Republic) were affected by mine waters with high contents of iron and manganese. These elements have a direct toxic or inhibit effect to the bottom biota. After decreasing of contents of metals in water (under 0.2 mg.l-1 Fe and 0.05 mg.l-1 Mn) there is main effect of change of bottom habitats. Bottom of stream is hard incrusted by iron and manganese hydroxides to the dept about 10 - 15 cm. Free surface layer is very thin - only about 1 - 2 cm. Communities of bottom organisms react in firsts seasons on higher contents of metals and now predominantly on changes of habitats. Many species disappeared from affected stretches (about 150 - 250 m long), for example planarids, oligochaets, mayflies Baetis, Ephemerella, blackflies, midges etc. Some populations are very small with not normal distributions of age's steadies (Gammarus fossarum). On the other hand, permanent biota of these stretches was consisting mainly of"@en . . "P\u0159\u00EDsp\u011Bvek k pozn\u00E1n\u00ED ekologie drobn\u00FDch tok\u016F zne\u010Di\u0161t\u011Bn\u00FDch d\u016Fln\u00EDmi vodami obsahuj\u00EDc\u00ED vysok\u00E9 koncentrace \u017Eeleza a manganu"@cs . . "Hele\u0161ic, Jan" . . . . . . . "Contribution to knowledge of ecology of small creeks polluted by mine waters with high contents of iron and manganese"@en . . "Kouty nad Desnou" . "Kouty nad Desnou" . . "RIV/00216224:14310/00:00002534!RIV/2002/MSM/143102/N" . "ecology of creeks, mine watres, iron, manganse"@en . "Scheibov\u00E1, Daniela" . "P\u0159\u00EDsp\u011Bvek k pozn\u00E1n\u00ED ekologie drobn\u00FDch tok\u016F zne\u010Di\u0161t\u011Bn\u00FDch d\u016Fln\u00EDmi vodami obsahuj\u00EDc\u00ED vysok\u00E9 koncentrace \u017Eeleza a manganu" . "Zeman, Josef" . "2000-01-01+01:00"^^ . "RIV/00216224:14310/00:00002534" . "3"^^ . "0"^^ . "XII. Limnologick\u00E1 konference %22Limnologie na p\u0159elomu tisicilet\u00ED%22, Kouty nad Desnou. Sborn\u00EDk refer\u00E1t\u016F" . . "0"^^ . "[43F158BBA894]" . "3"^^ . "Univerzita Palack\u00E9ho v Olomouci" . . "Z(MSM 143100010)" . . . . "Contribution to knowledge of ecology of small creeks polluted by mine waters with high contents of iron and manganese"@en . "Drobn\u00E9 toky v oblasti utlumu t\u011B\u017Eby uranu jsou zne\u010Di\u0161t\u011Bny d\u016Fln\u00EDmi vodami obshuj\u00EDc\u00EDmi vy\u0161\u0161\u00ED koncentrace \u017Eeleza a manganu. V prvn\u00ED f\u00E1zi p\u016Fsobilo p\u0159dev\u0161\u00EDm zne\u0161i\u0161t\u011Bn\u00ED toxicky a inhibi\u010Dn\u011B. Nyn\u00ED po poklesu onshu Fe pod hranici 0,2 mg/l a Mn pod hranici 0,05 mg/l se projevuje p\u0159edev\u0161\u00EDm zm\u011Bna biotopu toku - siln\u00E1 inkrustace dnov\u00FDch sediment\u016F hydro-oxidy \u017Eeleza a manganu. Spole\u010Dnstvo makrozoobentosu reagovalo na tyto zm\u011Bny prost\u0159ed\u00ED v\u00FDrazn\u00FDm \u00FAbytkem biomasy (produkce), vymizen\u00EDm citlv\u00FDch druh\u016F pot\u0159ebuj\u00EDc\u00EDh hyporheickou z\u00F3nu a zv\u00FD\u0161en\u00EDm driftu. To se projebilo p\u0159edev\u0161\u00EDm n\u00E1rustem po\u010Detnosti filtruj\u00EDc\u00EDch sb\u011Bra\u010D\u016F - chrost\u00EDk\u016F \u010Deledi Hydropsychidae." . . . "181" .