Low Specific Phosphorus Uptake Affinity of Epilithon in Three Oligo- to Mesotrophic Post-mining Lakes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F21%3A43903294" target="_blank" >RIV/60076658:12310/21:43903294 - isvavai.cz</a>

Alternative codes found

RIV/60077344:_____/21:00552463 RIV/00216275:25310/21:39917525

Result on the web

<a href="https://www.frontiersin.org/articles/10.3389/fmicb.2021.735498/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fmicb.2021.735498/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fmicb.2021.735498" target="_blank" >10.3389/fmicb.2021.735498</a>

Result language

angličtina

Original language name

Low Specific Phosphorus Uptake Affinity of Epilithon in Three Oligo- to Mesotrophic Post-mining Lakes

Original language description

Epilithon contributes to phosphorus (P) cycling in lakes, but its P uptake traits have been rarely studied. We measured the chemical composition of epilithon and its inorganic P uptake kinetics using isotope P-33 in three deep oligo- to mesotrophic post-mining lakes in April, July, and October 2019. Over the sampling period, epilithon biomass doubled, while the P content in biomass dropped to 60% of the April values, and the seasonal changes in P content expressed per epilithon area were only marginal and statistically not significant. High epilithic C:P molar ratios (677 on average) suggested strong P deficiency in all investigated lakes. Regarding the kinetic parameters of phosphorus uptake, maximum uptake velocity (V-max, seasonal range 1.9-129 mg P g OM-1 h(-1)) decreased by an order of magnitude from April to October, while half-saturation constant (K-S, seasonal range 3.9-135 mg P L-1) did not show any consistent temporal trend. Values of epilithic specific P uptake affinity (SPUA(E), seasonal range 0.08-3.1 L g OM-1 h(-1)) decreased from spring to autumn and were two to four orders of magnitude lower than the corresponding values for seston (SPUA(sest)), which showed an opposite trend. Considering our results, we suggest a possible mechanism underlying a stable coexistence of planktonic and epilithic microorganisms, with plankton prospering mostly in summer and autumn and epilithon in winter and spring season. Additionally, a phenomenon of reversible abiotic P adsorption on epilithon was observed.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10606 - Microbiology

Project

<a href="/en/project/GA19-05791S" target="_blank" >GA19-05791S: The effect of periphyton assemblages on productivity and phosphorus cycling in oligotrophic post-mining lakes</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Frontiers in Microbiology

ISSN

1664-302X

e-ISSN

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Volume of the periodical

12

Issue of the periodical within the volume

OCT 6 2021

Country of publishing house

CH - SWITZERLAND

Number of pages

13

Pages from-to

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UT code for WoS article

000710115100001

EID of the result in the Scopus database

2-s2.0-85117465951