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Statements

Subject Item
n2:RIV%2F60077344%3A_____%2F06%3A00080150%21RIV07-AV0-60077344
rdf:type
n15:Vysledek skos:Concept
dcterms:description
Plankton biomass and composition, extracellular phosphatase activity (EPA) of planktonic microorganisms, aluminium (Al) speciation, and phosphorus (P) cycling were studied in acidified lakes of different trophy in the Bohemian Forest. Enormous EPA and high planktonic C:P ratios suggested severe P limitation of the plankton. The terrestrial Al inputs, together with in-lake processes controlling the formation of particulate Al reduced P availability for planktonic microorganisms. Ionic Al reduced EPA at pH <5. Both particulate and ionic Al forms affected P availability, specifically shaped the plankton composition in the lakes, and delayed plankton recovery from acidification. The study demonstrated the key role of Al in overall P availability, food web structure, plankton dynamics, and recent recovery of chronically acidified lakes. Plankton biomass and composition, extracellular phosphatase activity (EPA) of planktonic microorganisms, aluminium (Al) speciation, and phosphorus (P) cycling were studied in acidified lakes of different trophy in the Bohemian Forest. Enormous EPA and high planktonic C:P ratios suggested severe P limitation of the plankton. The terrestrial Al inputs, together with in-lake processes controlling the formation of particulate Al reduced P availability for planktonic microorganisms. Ionic Al reduced EPA at pH <5. Both particulate and ionic Al forms affected P availability, specifically shaped the plankton composition in the lakes, and delayed plankton recovery from acidification. The study demonstrated the key role of Al in overall P availability, food web structure, plankton dynamics, and recent recovery of chronically acidified lakes. Biomasa a složení planktonu, aktivita extracelulárních fosfatáz (EPA) planktonních mikroorganismů, speciace hliníku (Al) a koloběh fosforu (P) byly studovány v acidifkovaných šumavských jezerech o různé trofii. Enormní EPA a vysoké C:P poměry ukazovaly na výraznou P limitaci planktonu. Terestrický přísun Al, spolu s procesy ovlivňujícími tvorbu partikulovaného Al v jezerech, redukovaly dostupnost fosforu pro planktonní mikroorganismy. Iontový Al redukoval EPA při pH <5. Partikulované i iontové formy Al ovlivňují dostupnost P, specificky působí na složení planktonu jezer a zpomalují zotavování planktonu z acidifikace. Studie ukázala klíčovou úlohu Al pro celkovou dostupnost P, strukturu potravních sítí, dynamiku planktonu a probíhající zotavování chronicky acidifikovaných jezer.
dcterms:title
Klíčová role hliníku pro dostupnost fosforu, strukturu potravních sítí a dynamiku planktonu v silně acidifikovaných jezerech A key role of aluminium in phosphorus availability, food web structure, and plankton dynamics in strongly acidified lakes A key role of aluminium in phosphorus availability, food web structure, and plankton dynamics in strongly acidified lakes
skos:prefLabel
Klíčová role hliníku pro dostupnost fosforu, strukturu potravních sítí a dynamiku planktonu v silně acidifikovaných jezerech A key role of aluminium in phosphorus availability, food web structure, and plankton dynamics in strongly acidified lakes A key role of aluminium in phosphorus availability, food web structure, and plankton dynamics in strongly acidified lakes
skos:notation
RIV/60077344:_____/06:00080150!RIV07-AV0-60077344
n3:strany
S441;S451
n3:aktivita
n9:Z n9:P
n3:aktivity
P(GA206/00/0063), P(GA206/03/1583), P(GA206/97/0072), P(IAA6017202), Z(AV0Z60050516), Z(AV0Z60170517), Z(MSM6007665801)
n3:cisloPeriodika
Suppl. 20
n3:dodaniDat
n18:2007
n3:domaciTvurceVysledku
n14:4286731 n14:9040358 n14:7264798 n14:9408150
n3:druhVysledku
n11:J
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
463555
n3:idVysledku
RIV/60077344:_____/06:00080150
n3:jazykVysledku
n17:eng
n3:klicovaSlova
extracellular phosphatases; bacterioplankton; phytoplankton; zooplankton; acidification; recovery
n3:klicoveSlovo
n8:acidification n8:phytoplankton n8:zooplankton n8:bacterioplankton n8:recovery n8:extracellular%20phosphatases
n3:kodStatuVydavatele
SK - Slovenská republika
n3:kontrolniKodProRIV
[D88803067817]
n3:nazevZdroje
Biologia
n3:obor
n16:EE
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
8
n3:projekt
n4:IAA6017202 n4:GA206%2F03%2F1583 n4:GA206%2F97%2F0072 n4:GA206%2F00%2F0063
n3:rokUplatneniVysledku
n18:2006
n3:svazekPeriodika
61
n3:tvurceVysledku
Fott, J. Kohout, L. Vrba, Jaroslav Kopáček, Jiří Štrojsová, Alena Nedbalová, Linda Bittl, T. Nedoma, Jiří
n3:zamer
n10:MSM6007665801 n10:AV0Z60050516 n10:AV0Z60170517
s:issn
0006-3088
s:numberOfPages
11