About: Massive occurrence of heterotrophic filaments in acidified lakes: seasonal dynamics and composition.

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About: Massive occurrence of heterotrophic filaments in acidified lakes: seasonal dynamics and composition. 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)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We documented permanent presence of heterotrophic filaments in three acidified lakes (pH<5) in the Bohemian Forest. Due to acidification, crustacean zooplankton were absent in all but one lake. In terms of carbon flow, microorganisms were thus almost exclusive players in the pelagic food webs with variety of extremely long (>100 micro m) heterotrophic filaments. The filaments usually accounted for > 50 of total heterotrophic microbial biomass in the pelagic zone (medians of the total biomass: 82-108 micro g C l-1), except for anoxic bottom layers and for episodic appearance of Daphnia longispina in one lake. Seasonal filament formation was mainly induced and maintained by grazing of mixotrophic flagellates (Dinobryon spp.) on small unicellular bacteria in the absence of cladoceran filtration. The filaments were less active than unicellular suspended bacteria. Fluorescence in situ hybridisation revealed that usually <50 of total bacteria were targeted with oligonucleotide probes for Eubacteria. We documented permanent presence of heterotrophic filaments in three acidified lakes (pH<5) in the Bohemian Forest. Due to acidification, crustacean zooplankton were absent in all but one lake. In terms of carbon flow, microorganisms were thus almost exclusive players in the pelagic food webs with variety of extremely long (>100 micro m) heterotrophic filaments. The filaments usually accounted for > 50 of total heterotrophic microbial biomass in the pelagic zone (medians of the total biomass: 82-108 micro g C l-1), except for anoxic bottom layers and for episodic appearance of Daphnia longispina in one lake. Seasonal filament formation was mainly induced and maintained by grazing of mixotrophic flagellates (Dinobryon spp.) on small unicellular bacteria in the absence of cladoceran filtration. The filaments were less active than unicellular suspended bacteria. Fluorescence in situ hybridisation revealed that usually <50 of total bacteria were targeted with oligonucleotide probes for Eubacteria. (en)
Title	Massive occurrence of heterotrophic filaments in acidified lakes: seasonal dynamics and composition. Massive occurrence of heterotrophic filaments in acidified lakes: seasonal dynamics and composition. (en)
skos:prefLabel	Massive occurrence of heterotrophic filaments in acidified lakes: seasonal dynamics and composition. Massive occurrence of heterotrophic filaments in acidified lakes: seasonal dynamics and composition. (en)
skos:notation	RIV/60077387:_____/03:62033039!RIV/2004/AV0/A62004/N
http://linked.open.../vavai/riv/strany	281;294
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA206/00/0063), P(GA206/03/1583), P(GA206/97/0072), P(GA206/99/0405), P(IAA6017202), P(IPP1011802), Z(AV0Z6017912)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2004
http://linked.open...aciTvurceVysledku	Kopáček, Jiří Nedoma, Jiří Šimek, Karel Vrba, Jaroslav
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	614396
http://linked.open...ai/riv/idVysledku	RIV/60077387:_____/03:62033039
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	bacterioplankton; phylogenetic identification; heterotrophic filaments (en)
http://linked.open.../riv/klicoveSlovo	bacterioplankton heterotrophic filaments phylogenetic identification
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[8F14A1394227]
http://linked.open...i/riv/nazevZdroje	FEMS Microbiology Ecology
http://linked.open...in/vavai/riv/obor	EE
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Biodiversity of microbial loop ,carbon flow and nutrient cycling in acidified lakes in the Šumava Mountains : pathways and controlling mechanisms Aquatic insects of the Křemená river basin (Šumava Mts.): A case study of long-term environmental effects and stream restoration on biodiversity Biogeochemical cycles of nutrients in mountain catchment-lake ecosystems: Anthropogenic impacts and possibilities of recovery Nutrient cycling in the nitrogen-saturated mountain forest ecosystem: history, present, and future of water, soil, and Norway spruce forest status Detection, localisation and quantification of extracellular enzymatic activities on cellular and population level in natural lake seston Microanalytical methods in investigations of structure and processes in animate and inanimate matter
http://linked.open...UplatneniVysledku	2003
http://linked.open...v/svazekPeriodika	46
http://linked.open...iv/tvurceVysledku	Kopáček, Jiří Šimek, Karel Nedoma, Jiří Vrba, Jaroslav Nedbalová, L. Kohout, L. Ráčková, P.
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	0168-6496
number of pages	14 (xsd:int)

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