Number of the records: 1

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

SYSNO ASEP	0340601
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Importance of dissolved organic carbon for phytoplankton nutrition in a eutrophic reservoir
Author(s)	Znachor, Petr (BC-A)_{RID, ORCID} Nedoma, Jiří (BC-A)_{RID, ORCID}
Source Title	Journal of Plankton Research - ISSN 0142-7873 Roč. 32, č. 3 (2010), s. 367-376
Number of pages	10 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	mixotrophy ; phytoplankton ; PDMPO ; DOC ; autoradiography ; diatoms
Subject RIV	DA - Hydrology ; Limnology
R&D Projects	GP206/07/P407 GA ČR - Czech Science Foundation (CSF)
	GA206/06/0462 GA ČR - Czech Science Foundation (CSF)
	GA206/05/0007 GA ČR - Czech Science Foundation (CSF)
	1QS600170504 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z60170517 - HBU-Z, BC-A (2005-2011)
UT WOS	000274339900009
DOI	10.1093/plankt/fbp129
Annotation	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.
Workplace	Biology Centre (since 2006)
Contact	Dana Hypšová, eje@eje.cz, Tel.: 387 775 214
Year of Publishing	2010

Number of the records: 1