Microbial remineralization processes during postspring-bloom with excess phosphate available in the northern Baltic Sea
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F24%3A00597546" target="_blank" >RIV/61388971:_____/24:00597546 - isvavai.cz</a>
Result on the web
<a href="https://academic.oup.com/femsec/article/100/8/fiae103/7718121?login=true" target="_blank" >https://academic.oup.com/femsec/article/100/8/fiae103/7718121?login=true</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/femsec/fiae103" target="_blank" >10.1093/femsec/fiae103</a>
Alternative languages
Result language
angličtina
Original language name
Microbial remineralization processes during postspring-bloom with excess phosphate available in the northern Baltic Sea
Original language description
The phosphorus (P) concentration is increasing in parts of the Baltic Sea following the spring bloom. The fate of this excess P-pool is an open question, and here we investigate the role of microbial degradation processes in the excess P assimilation phase. During a 17-day-long mesocosm experiment in the southwest Finnish archipelago, we examined nitrogen, phosphorus, and carbon acquiring extracellular enzyme activities in three size fractions (<0.2, 0.2-3, and >3 mu m), bacterial abundance, production, community composition, and its predicted metabolic functions. The mesocosms received carbon (C) and nitrogen (N) amendments individually and in combination (NC) to distinguish between heterotrophic and autotrophic processes. Alkaline phosphatase activity occurred mainly in the dissolved form and likely contributed to the excess phosphate conditions together with grazing. At the beginning of the experiment, peptidolytic and glycolytic enzymes were mostly produced by free-living bacteria. However, by the end of the experiment, the NC-treatment induced a shift in peptidolytic and glycolytic activities and degradation of phosphomonoesters toward the particle-associated fraction, likely as a consequence of higher substrate availability. This would potentially promote retention of nutrients in the surface as opposed to sedimentation, but direct sedimentation measurements are needed to verify this hypothesis.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10606 - Microbiology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
FEMS Microbiology Ecology
ISSN
0168-6496
e-ISSN
1574-6941
Volume of the periodical
100
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
fiae103
UT code for WoS article
001284966400002
EID of the result in the Scopus database
2-s2.0-85200772628