A stoichiometric insight into the seasonal imbalance of phosphorus and nitrogen in central European fishponds

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25173154%3A_____%2F24%3AN0000002" target="_blank" >RIV/25173154:_____/24:N0000002 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1186/s12302-024-00968-9" target="_blank" >https://link.springer.com/article/10.1186/s12302-024-00968-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1186/s12302-024-00968-9" target="_blank" >10.1186/s12302-024-00968-9</a>

Result language

angličtina

Original language name

A stoichiometric insight into the seasonal imbalance of phosphorus and nitrogen in central European fishponds

Original language description

BackgroundThis study examines seasonal and regional trends in chlorophyll-a concentrations and the dynamics of nitrogen (N) and phosphorus (P) in 32 fishponds (resulting in 150 pond-year cases) employed for fish production. Fishponds have a poor ecological state, requiring further insights for pond management. To gain those insights, monthly data on the pond environment were collected over the growing seasons from April to September (up to 14 years) across lowland to highland regions in Czechia. We used a ratio of dissolved inorganic nitrogen to total phosphorus (DIN:TP) to investigate seasonal patterns of N and P limitations.ResultsFishponds in the lowland region (below 199 m above sea level, a.s.l.) were predominantly N-limited (80%), while ponds in the midland region (200-449 m a.s.l.) exhibited P limitation at the beginning of the growing season (April-May) and N limitation by the end of the season (August-September; 90% of fishponds). Highland fishponds (above 450 m a.s.l.) showed frequent P limitations, especially during the beginning of the season. Chlorophyll-a concentrations varied on both regional and seasonal scales, with the overall phytoplankton biomass peak at 31 ha of pond surface area. Chlorophyll-a remained stable at the beginning of the season regardless of the DIN:TP ratio but increased with a lower DIN:TP ratio by its end. The chlorophyll-a concentrations were lowest at the beginning and highest at the end of the season and decreased with altitude.ConclusionsSeasonal and regional variations in nutrient limitations and chlorophyll-a occur in fishponds. Our study suggests that targeted seasonal nutrient input and enhanced monitoring can significantly improve fishpond management practices and ecosystem stability.

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

10617 - Marine biology, freshwater biology, limnology

Project

<a href="/en/project/GA17-09310S" target="_blank" >GA17-09310S: Fishponds as models for exploring plankton diversity and dynamics of hypertrophic shallow lakes</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

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

Name of the periodical

Environmental Sciences Europe

ISSN

—

e-ISSN

2190-4707

Volume of the periodical

36

Issue of the periodical within the volume

139

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

1-9

UT code for WoS article

001283949400001

EID of the result in the Scopus database

2-s2.0-85200457201