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Statements

Subject Item
n2:RIV%2F67985939%3A_____%2F09%3A00329645%21RIV10-AV0-67985939
rdf:type
n18:Vysledek skos:Concept
dcterms:description
The responses of the sporelings to the experimental treatments were evaluated and compared with those observed in the lake. The experiments showed that an Al concentration higher than 300 µg l–1, and high acidity (pH 4), inhibit sporeling growth, in particular resulted in a pronounced reduction in absorptive organs (macrogametophyte rhizoids, roots and root hairs). With increasing concentrations of Al and at pH 4, the ratio of the below-ground to above-ground sporeling biomass decreased to less than 1. The responses of the lake sporelings, rooting in the upper sediment layer, were similar to those exposed to 100–300 µg l–1 of Al in the laboratory, and reflected the Al toxicity of the lake water.. The quillworts at Plešné Lake survived because adult plants can tolerate these adverse conditions and are very long lived. The population recovered when the pH of the water increased to over 5 and the Al concentration decreased to below 300 µg l–1. The responses of the sporelings to the experimental treatments were evaluated and compared with those observed in the lake. The experiments showed that an Al concentration higher than 300 µg l–1, and high acidity (pH 4), inhibit sporeling growth, in particular resulted in a pronounced reduction in absorptive organs (macrogametophyte rhizoids, roots and root hairs). With increasing concentrations of Al and at pH 4, the ratio of the below-ground to above-ground sporeling biomass decreased to less than 1. The responses of the lake sporelings, rooting in the upper sediment layer, were similar to those exposed to 100–300 µg l–1 of Al in the laboratory, and reflected the Al toxicity of the lake water.. The quillworts at Plešné Lake survived because adult plants can tolerate these adverse conditions and are very long lived. The population recovered when the pH of the water increased to over 5 and the Al concentration decreased to below 300 µg l–1.
dcterms:title
Effects of aluminium toxicity and low pH on the early development of Isoëtes echinospora Effects of aluminium toxicity and low pH on the early development of Isoëtes echinospora
skos:prefLabel
Effects of aluminium toxicity and low pH on the early development of Isoëtes echinospora Effects of aluminium toxicity and low pH on the early development of Isoëtes echinospora
skos:notation
RIV/67985939:_____/09:00329645!RIV10-AV0-67985939
n3:aktivita
n4:P n4:Z
n3:aktivity
P(GA206/04/0967), P(GA206/07/1200), P(KJB600050704), Z(AV0Z60050516), Z(AV0Z60170517)
n3:cisloPeriodika
2
n3:dodaniDat
n5:2010
n3:domaciTvurceVysledku
n7:2654482
n3:druhVysledku
n6:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
312373
n3:idVysledku
RIV/67985939:_____/09:00329645
n3:jazykVysledku
n16:eng
n3:klicovaSlova
uillwort; reproduction; acidification
n3:klicoveSlovo
n14:uillwort n14:acidification n14:reproduction
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[E0D782BC9A0B]
n3:nazevZdroje
Preslia
n3:obor
n17:EF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:projekt
n8:KJB600050704 n8:GA206%2F07%2F1200 n8:GA206%2F04%2F0967
n3:rokUplatneniVysledku
n5:2009
n3:svazekPeriodika
81
n3:tvurceVysledku
Hekera, P. Čtvrtlíková, Martina Vrba, Jaroslav Znachor, Petr
n3:wos
000267467700004
n3:zamer
n15:AV0Z60170517 n15:AV0Z60050516
s:issn
0032-7786
s:numberOfPages
15