About: Importance of dissolved organic carbon for phytoplankton nutrition in a eutrophic reservoir

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About: Importance of dissolved organic carbon for phytoplankton nutrition in a eutrophic reservoir Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We performed 4 experiments with size fractionated phytoplankton organic C uptake in a eutrophic Římov Reservoir. Samples from surface and euphotic depth were incubated at in situ depths in light and dark bottles arrangement with 3H amino acids and glucose. Moreover, we measured silica deposition and chlorophyll content in diatom cells without and with glucose. Phytoplankton uptake of both substrates was low regardless the incubation depth. Thus, mixotrophic nutrition of the phytoplankton was of low importance under natural conditions. However, glucose addition in micromolar concentrations resulted in asignificant increase in diatom silification rates in a light bottle variant. Interestingly, chlorophyll fluorescence in diatom cells markedly decreased after the glucose addition indicating a potential restructuring of cell metabolism to benefit from a remarkably high concentration of available organic C in the environment. We performed 4 experiments with size fractionated phytoplankton organic C uptake in a eutrophic Římov Reservoir. Samples from surface and euphotic depth were incubated at in situ depths in light and dark bottles arrangement with 3H amino acids and glucose. Moreover, we measured silica deposition and chlorophyll content in diatom cells without and with glucose. Phytoplankton uptake of both substrates was low regardless the incubation depth. Thus, mixotrophic nutrition of the phytoplankton was of low importance under natural conditions. However, glucose addition in micromolar concentrations resulted in asignificant increase in diatom silification rates in a light bottle variant. Interestingly, chlorophyll fluorescence in diatom cells markedly decreased after the glucose addition indicating a potential restructuring of cell metabolism to benefit from a remarkably high concentration of available organic C in the environment. (en)
Title	Importance of dissolved organic carbon for phytoplankton nutrition in a eutrophic reservoir Importance of dissolved organic carbon for phytoplankton nutrition in a eutrophic reservoir (en)
skos:prefLabel	Importance of dissolved organic carbon for phytoplankton nutrition in a eutrophic reservoir Importance of dissolved organic carbon for phytoplankton nutrition in a eutrophic reservoir (en)
skos:notation	RIV/60077344:_____/10:00340601!RIV10-AV0-60077344
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1QS600170504), P(GA206/05/0007), P(GA206/06/0462), P(GP206/07/P407), Z(AV0Z60170517)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Nedoma, Jiří Znachor, Petr
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	Biologické centrum AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	263141
http://linked.open...ai/riv/idVysledku	RIV/60077344:_____/10:00340601
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	mixotrophy; phytoplankton; PDMPO; DOC; autoradiography; diatoms (en)
http://linked.open.../riv/klicoveSlovo	DOC diatoms autoradiography mixotrophy PDMPO phytoplankton - chlorophyll-a - running waters - long-term changes - nuclear power plant Temelín
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[B005472CB044]
http://linked.open...i/riv/nazevZdroje	Journal of Plankton Research
http://linked.open...in/vavai/riv/obor	DA
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Limnological basis of sustainable management of reservoirs Changes in bacterioplankton structure and functioning in a reservoir related to single-cell activities of major phylogenetic groups of bacteria Competition relationships among dominant species of phytoplankton in the reservoirs Mixotrophic nutrition of summer phytoplankton species in the Římov Reservoir
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	32
http://linked.open...iv/tvurceVysledku	Nedoma, Jiří Znachor, Petr
http://linked.open...ain/vavai/riv/wos	000274339900009
http://linked.open...n/vavai/riv/zamer	Struktura, funkce a vývoj vodních ekosystémů
issn	0142-7873
number of pages	10 (xsd:int)

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