Factors affecting growth and viability of natural diatom populations in the meso-eutrophic Římov Reservoir (Czech Republic)

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F15%3A00443835" target="_blank" >RIV/60077344:_____/15:00443835 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s10750-015-2417-8" target="_blank" >http://dx.doi.org/10.1007/s10750-015-2417-8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10750-015-2417-8" target="_blank" >10.1007/s10750-015-2417-8</a>

Result language
angličtina
Original language name
Factors affecting growth and viability of natural diatom populations in the meso-eutrophic Římov Reservoir (Czech Republic)
Original language description
Algal population size may vary substantially over the season in response to varying growth and loss rates strongly affected by environmental drivers. In our study, we measured growth and viability of Fragilaria crotonensis, a dominant diatom of the summer phytoplankton in the small, meso-eutrophic, dimictic freshwater Římov Reservoir (Czech Republic). Over two consecutive seasons, Fragilaria growth and viability were assessed with PDMPO, a specific Si-deposition tracer in diatoms, and SYTOX Green, a membrane permeability probe, respectively. Using multiple linear regression with stepwise forward selection of environmental variables, diatom growth and viability were found to be driven by different factors. Fragilaria growth was positively affected by daily light exposure during the 24-h incubation with PDMPO and by mean river discharge into the reservoir over the 10 days before our measurements. Fragilaria viability, in contrast, declined markedly with decreased ambient silica concentra
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DA - Hydrology and limnology
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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