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Statements

Subject Item
n2:RIV%2F60077344%3A_____%2F13%3A00392558%21RIV14-AV0-60077344
rdf:type
n10:Vysledek skos:Concept
dcterms:description
Planktonic ciliates occasionally form brief rapid increases in numbers (blooms) that can be trophically important. Although model simulations and mesocosm studies indicate that blooms occur over 10 to 20 days, field data are rarely sufficiently detailed to reveal their occurrence and demise. Our data (collected over 57 weeks across a coastal lagoon) offer insights into the population dynamics of a single species, place these in the context of the entire ciliate assemblage, and provide guidance on what should continue to be examined. Specifically, to evaluate population dynamics we examine two species of Cyrtostrombidium, characterise temporal and spatial variation of their abundance, and relate these to abiotic phenomena and biological factors. This is also the first report of Cyrtostrombidium in a tropical coastal lagoon. Collectively our analysis reveals key aspects of the dynamics of this genus: 1) small-scale peaks in abundance are similar to 30 m in size and can persist for similar to 10-30 days, reaching a maximum of 100 cells ml(-1); 2) these increases are driven by biotic factors (revealed through autocorrelation analysis); 3) long-term trends are driven by the shift between dry and rainy seasons and by the periods of isolation of lagoon from the sea (revealed through multiple regression analysis); 4) blooms may at times control primary production; 5) conjugation, an ecologically important event, may be associated with blooms (at times 9% of population was conjugating); and 6) dinoflagellate parasitism, poorly described in oligotrichs, is potentially important in population demise. These results both reflect on how ciliates may behave in short-term events and should encourage the continued need for detailed observations of field samples at a high taxonomic resolution. Planktonic ciliates occasionally form brief rapid increases in numbers (blooms) that can be trophically important. Although model simulations and mesocosm studies indicate that blooms occur over 10 to 20 days, field data are rarely sufficiently detailed to reveal their occurrence and demise. Our data (collected over 57 weeks across a coastal lagoon) offer insights into the population dynamics of a single species, place these in the context of the entire ciliate assemblage, and provide guidance on what should continue to be examined. Specifically, to evaluate population dynamics we examine two species of Cyrtostrombidium, characterise temporal and spatial variation of their abundance, and relate these to abiotic phenomena and biological factors. This is also the first report of Cyrtostrombidium in a tropical coastal lagoon. Collectively our analysis reveals key aspects of the dynamics of this genus: 1) small-scale peaks in abundance are similar to 30 m in size and can persist for similar to 10-30 days, reaching a maximum of 100 cells ml(-1); 2) these increases are driven by biotic factors (revealed through autocorrelation analysis); 3) long-term trends are driven by the shift between dry and rainy seasons and by the periods of isolation of lagoon from the sea (revealed through multiple regression analysis); 4) blooms may at times control primary production; 5) conjugation, an ecologically important event, may be associated with blooms (at times 9% of population was conjugating); and 6) dinoflagellate parasitism, poorly described in oligotrichs, is potentially important in population demise. These results both reflect on how ciliates may behave in short-term events and should encourage the continued need for detailed observations of field samples at a high taxonomic resolution.
dcterms:title
Insights on short–term blooms of planktonic ciliates, provided by an easily recognised genus: Cyrtostrombidium Insights on short–term blooms of planktonic ciliates, provided by an easily recognised genus: Cyrtostrombidium
skos:prefLabel
Insights on short–term blooms of planktonic ciliates, provided by an easily recognised genus: Cyrtostrombidium Insights on short–term blooms of planktonic ciliates, provided by an easily recognised genus: Cyrtostrombidium
skos:notation
RIV/60077344:_____/13:00392558!RIV14-AV0-60077344
n10:predkladatel
n18:ico%3A60077344
n3:aktivita
n13:I
n3:aktivity
I
n3:cisloPeriodika
1
n3:dodaniDat
n7:2014
n3:domaciTvurceVysledku
n12:9569308
n3:druhVysledku
n14:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
80412
n3:idVysledku
RIV/60077344:_____/13:00392558
n3:jazykVysledku
n17:eng
n3:klicovaSlova
bloom; conjugation; parasitism; patch; population dynamics; lagoon
n3:klicoveSlovo
n6:lagoon n6:parasitism n6:conjugation n6:population%20dynamics n6:patch n6:bloom
n3:kodStatuVydavatele
PL - Polská republika
n3:kontrolniKodProRIV
[A3D94C9ABBB5]
n3:nazevZdroje
Acta Protozoologica
n3:obor
n4:EE
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n7:2013
n3:svazekPeriodika
52
n3:tvurceVysledku
Macek, Miroslav Montagnes, D. J. S. Bulit, C.
n3:wos
000317848700001
s:issn
0065-1583
s:numberOfPages
12
n15:doi
10.4467/16890027AP.13.001.0829