| Attributes | Values |
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| rdf:type
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| Description
| - Celkem 71 údajů zjištěných v letech 1968-2004 v Rokytné a Loučce bylo použito k odhadu druhové pestrosti ryb pomocí jednoho elektroodlovu a ke zjištění pravděpodobnosti detekce jednotlivých druhů. Průměrná odhadnutá druhová pestrost z jednoho odlovu (p´s1) byla v Rokytné a Loučce 95.4% a 96.2% celkové odhadnuté druhové pestrosti. Hodnoty p´s1 se na jednotlivých lokalitách pohybovali mezi 71.4% - 100% celkové odhadnuté druhové pestrosti. Další druhy nedetekované v prvním odlovu byly zjištěny ve 38% (Rokytná) a 22% (Loučka) případů. Hodnocení struktury společenstev pomocí mnohorozměrné statistiky (PCA) ukázalo značnou neshodu mezi daty získanými jedním a dvěma po sobě jdoucími elektroodlovy. Otázky týkající se rozhodnutí, zda provádět jeden nebo dva po sobě jdoucí lovy elektrickým agregátem, musí být založeny na cílech dané studie. K přesnějšímu zhodnocení struktury rybích společenstev jsou doporučovány dva odlovy. (cs)
- Altogether 71 samples collected in 1968–2004 from the Rokytná and Loučka rivers were used to estimate proportional fish species richness from single-pass electro-fishing and probabilities of detection for individual species. Mean estimated species richness from single-pass sampling (p´s1) was 95.4% and 96.2% of estimated total species richness for Rokytná and Loučka rivers, respectively. However, p´s1 values for individual sites ranged from 71.4% to 100% of estimated total species richness. Additional species unique to the second pass were collected in 38% (Rokytná) and 22% (Loučka) of the samples. When assessing the fish assemblage structure by a multivariate technique (PCA), considerable inaccuracy between the single-pass and two-pass electro-fishing data was also observed. Decisions whether to conduct one or more electro-fishing passes must be based on study objectives. For more accurate evaluations of fish assemblage structure two-passes are recommended.
- Altogether 71 samples collected in 1968–2004 from the Rokytná and Loučka rivers were used to estimate proportional fish species richness from single-pass electro-fishing and probabilities of detection for individual species. Mean estimated species richness from single-pass sampling (p´s1) was 95.4% and 96.2% of estimated total species richness for Rokytná and Loučka rivers, respectively. However, p´s1 values for individual sites ranged from 71.4% to 100% of estimated total species richness. Additional species unique to the second pass were collected in 38% (Rokytná) and 22% (Loučka) of the samples. When assessing the fish assemblage structure by a multivariate technique (PCA), considerable inaccuracy between the single-pass and two-pass electro-fishing data was also observed. Decisions whether to conduct one or more electro-fishing passes must be based on study objectives. For more accurate evaluations of fish assemblage structure two-passes are recommended. (en)
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| Title
| - Effect of multiple electro-fishing on determining the structure of fish communities in small streams
- Vliv opakovaných elektroodlovů na zjištění struktury rybích společenstev v malých tocích (cs)
- Effect of multiple electro-fishing on determining the structure of fish communities in small streams (en)
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| skos:prefLabel
| - Effect of multiple electro-fishing on determining the structure of fish communities in small streams
- Vliv opakovaných elektroodlovů na zjištění struktury rybích společenstev v malých tocích (cs)
- Effect of multiple electro-fishing on determining the structure of fish communities in small streams (en)
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| skos:notation
| - RIV/68081766:_____/06:00043725!RIV07-AV0-68081766
|
| http://linked.open.../vavai/riv/strany
| |
| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(SM/6/3/05), Z(AV0Z60930519)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/68081766:_____/06:00043725
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - electro-fishing efficacy; repeated sampling; probability of detection; species richness (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| |
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Lusk, Stanislav
- Humpl, Martin
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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