About: Trophic structure of nine Czech reservoirs regularly stocked with piscivorous fish.

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Trophic structure of nine Czech reservoirs regularly stocked with piscivorous fish. Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	For nearly twenty years, most Czech reservoirs supplying drinking water have been under special biomanipulation programme. The most common biomanipulative measure adopted was stocking with piscivorous fish (mostly 5 cm fry) using an annual stocking level of approx. 25,000 fish per reservoir. Nine reservoirs were studied for signs of top-down food web effects, as predicted by the trophic cascade hypothesis based on levels of total phosphorus (TP), chlorophyll a (Chl a), zooplankton biomass (ZB) and zooplankton community structure. In all nine reservoirs, only small Daphnia species were recorded such as D. galeata and D. cucullata. The relationship of Chl a level to TP, and of ZB to Chla, was positive under enhanced piscivory and did not differ statistically from the relationships in other reservoirs with natural fish stocks. The failure of this attempt at biomanipulation may be due to an insufficient stocking rate of predatory fish and/or inadequate data on the resident planktivorous fish levels. For nearly twenty years, most Czech reservoirs supplying drinking water have been under special biomanipulation programme. The most common biomanipulative measure adopted was stocking with piscivorous fish (mostly 5 cm fry) using an annual stocking level of approx. 25,000 fish per reservoir. Nine reservoirs were studied for signs of top-down food web effects, as predicted by the trophic cascade hypothesis based on levels of total phosphorus (TP), chlorophyll a (Chl a), zooplankton biomass (ZB) and zooplankton community structure. In all nine reservoirs, only small Daphnia species were recorded such as D. galeata and D. cucullata. The relationship of Chl a level to TP, and of ZB to Chla, was positive under enhanced piscivory and did not differ statistically from the relationships in other reservoirs with natural fish stocks. The failure of this attempt at biomanipulation may be due to an insufficient stocking rate of predatory fish and/or inadequate data on the resident planktivorous fish levels. (en)
Title	Trophic structure of nine Czech reservoirs regularly stocked with piscivorous fish. Trophic structure of nine Czech reservoirs regularly stocked with piscivorous fish. (en)
skos:prefLabel	Trophic structure of nine Czech reservoirs regularly stocked with piscivorous fish. Trophic structure of nine Czech reservoirs regularly stocked with piscivorous fish. (en)
skos:notation	RIV/60077387:_____/00:62003029!RIV/2003/AV0/A62003/N
http://linked.open.../vavai/riv/strany	141;149
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z6017912)
http://linked.open...iv/cisloPeriodika	429
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Hejzlar, Josef Kubečka, Jan Seďa, Jaromír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Hydrobiologický ústav AV ČR
http://linked.open...dnocenehoVysledku	729728
http://linked.open...ai/riv/idVysledku	RIV/60077387:_____/00:62003029
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	N/A (en)
http://linked.open.../riv/klicoveSlovo	N/A
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[995EFC136F7F]
http://linked.open...i/riv/nazevZdroje	Hydrobiologia
http://linked.open...in/vavai/riv/obor	DA
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...UplatneniVysledku	2000
http://linked.open...v/svazekPeriodika	429
http://linked.open...iv/tvurceVysledku	Hejzlar, Josef Kubečka, Jan Seďa, Jaromír
http://linked.open...n/vavai/riv/zamer	Biotické interakce v pelagické zóně lenitických ekosystémů, údolních nádrží a jezer různé trofie v podmínkách výrazného snížení emisí v postkomunistické Evropě
issn	0018-8158
number of pages	9 (xsd:int)

Faceted Search & Find service v1.16.118 as of Jun 21 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3240 as of Jun 21 2024, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (126 GB total memory, 58 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software