Top-down and bottom-up control of plankton structure and dynamics in hypertrophic fishponds
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25173154%3A_____%2F23%3AN0000008" target="_blank" >RIV/25173154:_____/23:N0000008 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12220/23:43906377
Result on the web
<a href="https://link.springer.com/content/pdf/10.1007/s10750-023-05312-5.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1007/s10750-023-05312-5.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10750-023-05312-5" target="_blank" >10.1007/s10750-023-05312-5</a>
Alternative languages
Result language
angličtina
Original language name
Top-down and bottom-up control of plankton structure and dynamics in hypertrophic fishponds
Original language description
We investigated the effects of strong top-down control by high fish stock on structure and seasonal dynamics of plankton in nine fishponds under conventional fishery management based on auxiliary feeding during two vegetation seasons. Mean concentrations of total nitrogen, phosphorus, and high densities of phytoplankton, bacteria, heterotrophic nanoflagellates, and ciliates indicated hypertrophic state of the fishponds, as well as a markedly reduced control of these microbial food web components by crustacean zooplankton. Mean seasonal densities of zooplankton varied within one order of magnitude for cladocerans, copepods, nauplii, and rotifers. Daphnia were found in most fishponds in densities up to 630 ind. l(-1) (median: 53 ind. l(-1)). While TN and TP concentrations were high, dissolved inorganic N (median: 29 & mu;g l(-1)) and reactive P (median: 11 & mu;g l(-1)) indicated possible nutrient deficiency. The fish stock index (defined as the product of biomass and square root of densities) was used as a proxy for fish predation pressure. Multivariate analysis revealed that nutrients and high fish stocks (market carp, carp fry, and/or undesirable small planktivorous fishes) were the main driving forces shaping the fishpond plankton. The resulting trophic structure thus severely reduced the herbivorous zooplankton-fish link during a vegetation season.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - 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
Result continuities
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)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Hydrobiologia
ISSN
0018-8158
e-ISSN
1573-5117
Volume of the periodical
851
Issue of the periodical within the volume
5
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
7
Pages from-to
1095-1111
UT code for WoS article
001037077200001
EID of the result in the Scopus database
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