Macrozoobenthos assemblage patterns in European carp (Cyprinus carpio) ponds - the importance of emersed macrophyte beds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F21%3A43902535" target="_blank" >RIV/60076658:12520/21:43902535 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1051/kmae/2021008" target="_blank" >https://doi.org/10.1051/kmae/2021008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/kmae/2021008" target="_blank" >10.1051/kmae/2021008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Macrozoobenthos assemblage patterns in European carp (Cyprinus carpio) ponds - the importance of emersed macrophyte beds

Popis výsledku v původním jazyce

Qualitative and quantitative differences in benthic macrozoobenthos distribution in carp pond littoral zones (macrophyte areas; LM) and pelagic zones (macrophyte-free areas; MF) were assessed in four commercial carp (Cyprinus carpio) grow-out ponds in the Czech Republic (semi-intensive management) and Austria (organic management) monthly over the growing season (June-September) of 2016 and 2017. While differences in environmental parameters and granulometric composition between LM and MF were statistically non-significant (p &gt; 0.05), organic matter content was significantly higher (p &lt; 0.05) in LM. Average macrozoobenthos density and biomass in LM (mean 431 ind.m(-2) and 6.78 g.m(-2)) was usually significantly higher (p &gt; 0.05) than MF (371 ind.m(-2) and 3.17 g.m(-2)). A similar trend was observed for zoobenthos diversity, with LM having a higher diversity (76 taxa) than MF (47 taxa). At the start of the growing season, chironomid density was higher (p &lt; 0.05) in muddy MF zones, regardless of management type, while oligochaete density was higher in muddy LM. The density of both groups later declined, such that density was significantly higher (p &gt; 0.05) in sandy substrates, regardless of habitat or management type. Our data suggest a significant drop in macrozoobenthos density and biomass compared with historical data, mainly due to new management techniques (fertilisation, supplementary feeding) and intensification (higher stock densities), suggesting that pond management is crucial as regards benthic invertebrate development and diversity. Our results indicate that emersed LM beds positively influence macrozoobenthos performance in carp ponds, potentially making them biodiversity hotspots. Further, LM beds can be regarded as invertebrate harbours, and hence should be protected and encouraged.

Název v anglickém jazyce

Macrozoobenthos assemblage patterns in European carp (Cyprinus carpio) ponds - the importance of emersed macrophyte beds

Popis výsledku anglicky

Qualitative and quantitative differences in benthic macrozoobenthos distribution in carp pond littoral zones (macrophyte areas; LM) and pelagic zones (macrophyte-free areas; MF) were assessed in four commercial carp (Cyprinus carpio) grow-out ponds in the Czech Republic (semi-intensive management) and Austria (organic management) monthly over the growing season (June-September) of 2016 and 2017. While differences in environmental parameters and granulometric composition between LM and MF were statistically non-significant (p &gt; 0.05), organic matter content was significantly higher (p &lt; 0.05) in LM. Average macrozoobenthos density and biomass in LM (mean 431 ind.m(-2) and 6.78 g.m(-2)) was usually significantly higher (p &gt; 0.05) than MF (371 ind.m(-2) and 3.17 g.m(-2)). A similar trend was observed for zoobenthos diversity, with LM having a higher diversity (76 taxa) than MF (47 taxa). At the start of the growing season, chironomid density was higher (p &lt; 0.05) in muddy MF zones, regardless of management type, while oligochaete density was higher in muddy LM. The density of both groups later declined, such that density was significantly higher (p &gt; 0.05) in sandy substrates, regardless of habitat or management type. Our data suggest a significant drop in macrozoobenthos density and biomass compared with historical data, mainly due to new management techniques (fertilisation, supplementary feeding) and intensification (higher stock densities), suggesting that pond management is crucial as regards benthic invertebrate development and diversity. Our results indicate that emersed LM beds positively influence macrozoobenthos performance in carp ponds, potentially making them biodiversity hotspots. Further, LM beds can be regarded as invertebrate harbours, and hence should be protected and encouraged.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40103 - Fishery

Projekt

<a href="/cs/project/LM2018099" target="_blank" >LM2018099: Jihočeské výzkumné centrum akvakultury a biodiverzity hydrocenóz</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Knowledge and Management of Aquatic Ecosystems

ISSN

1961-9502

e-ISSN

—

Svazek periodika

422

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

000624286500001

EID výsledku v databázi Scopus

2-s2.0-85102049090