| Attributes | Values |
|---|
| rdf:type
| |
| Description
| - Na písečných plážích řeky Moravy byla zkoumána účinnost tří různých technik bodového elektrolovu 0+ ryb. Při přímém elektrolovu (DE) operátor manipuluje s anodou připevněnou na nástavci. Při elektrolovu hodem (TE) je anoda házena do vody z větší vzdálenosti ze břehu. Při dálkovém elektrolovu (RE) je anoda předem položena na dno a po rekolonizaci prostoru rybami je na dálku aktivována. Tato studie ukázala, že při DE jsou plašeny ryby, které před lovcem utíkají a snižují tak účinnost této techniky (30% ve srovnání s RE). Ve velikostní struktuře a relativní abundanci společenstev nebyl mezi DE a RE nalezen žádný statisticky významný rozdíl, TE však pravděpodobně nadhodnocoval relativní abundanci oukleje. RE byl nejúčinnější technikou elektrolovu a pokud bude redukována jeho časová náročnost, bude také nejvhodnější pro monitoring společenstev 0+ ryb na písečných plážích. (cs)
- The efficiencies of three different techniques for 0+ fish point abundance sampling by electric fishing were tested on a sandy beach of the Morava River. During direct electric fishing (DE), the operator immerses an anode fastened on an extension pole. During thrown anode electric fishing (TE), the anode is thrown at a distance from the bank. During remote electric fishing (RE), a pre-positioned anode is activated after allowing sufficient time for fish to recolonise the area. The DE technique was found to disturb fish and that fish tend to escape, thereby reducing its efficiency (30% of efficiency of RE). There was no significant difference in relative abundance estimates or size structure of assemblages between DE and RE, but TE seemed overestimate relative abundance of bleak. RE was the most efficient technique and if time required for deployment could be reduced, it would be also the most suitable for monitoring 0+ fish assemblages on sandy river beaches.
- The efficiencies of three different techniques for 0+ fish point abundance sampling by electric fishing were tested on a sandy beach of the Morava River. During direct electric fishing (DE), the operator immerses an anode fastened on an extension pole. During thrown anode electric fishing (TE), the anode is thrown at a distance from the bank. During remote electric fishing (RE), a pre-positioned anode is activated after allowing sufficient time for fish to recolonise the area. The DE technique was found to disturb fish and that fish tend to escape, thereby reducing its efficiency (30% of efficiency of RE). There was no significant difference in relative abundance estimates or size structure of assemblages between DE and RE, but TE seemed overestimate relative abundance of bleak. RE was the most efficient technique and if time required for deployment could be reduced, it would be also the most suitable for monitoring 0+ fish assemblages on sandy river beaches. (en)
|
| Title
| - Inter-calibration of three electric fishing techniques to estimate 0+ juvenile fish densities on sandy river beaches
- Vzájemná kalibrace tří technik elektrolovu pro odhady hustot 0+ juvenilních ryb na říčních písečných plážích (cs)
- Inter-calibration of three electric fishing techniques to estimate 0+ juvenile fish densities on sandy river beaches (en)
|
| skos:prefLabel
| - Inter-calibration of three electric fishing techniques to estimate 0+ juvenile fish densities on sandy river beaches
- Vzájemná kalibrace tří technik elektrolovu pro odhady hustot 0+ juvenilních ryb na říčních písečných plážích (cs)
- Inter-calibration of three electric fishing techniques to estimate 0+ juvenile fish densities on sandy river beaches (en)
|
| skos:notation
| - RIV/68081766:_____/05:00023141!RIV06-AV0-68081766
|
| http://linked.open.../vavai/riv/strany
| |
| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(GA524/02/0924), P(IAB6093106), Z(AV0Z60930519)
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| http://linked.open...iv/cisloPeriodika
| |
| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
| |
| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
| |
| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/68081766:_____/05:00023141
|
| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - electric fishing; 0+ juvenile fish; point abundance sampling (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
|
| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...i/riv/nazevZdroje
| - Fisheries Management and Ecology
|
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
| |
| http://linked.open...iv/tvurceVysledku
| - Jurajda, Pavel
- Janáč, Michal
|
| http://linked.open...n/vavai/riv/zamer
| |
| issn
| |
| number of pages
| |
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