Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density
Grass carp (Ctenopharyngodon idella Val.) stocked (29 kg/ha) in a small pond reduced the biomass of aquatic macrophytes from 109 g/m2 to 33 g/m2 during one growing season. The only changes in hydrochemical parameters (pH, alkalinity, acidity, BOD5, CODMn, NH4-N, NO2-N, NO3-N, TN, PO4-P and TP) assoc...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2009-01-01
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| Series: | Czech Journal of Animal Science |
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| Online Access: | https://cjas.agriculturejournals.cz/artkey/cjs-200901-0005_limnological-changes-in-a-pond-ecosystem-caused-by-grass-carp-ctenopharyngodon-idella-val-low-stocking-densi.php |
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| author | I. Pípalová J. Květ Z. Adámek |
| author_facet | I. Pípalová J. Květ Z. Adámek |
| author_sort | I. Pípalová |
| collection | DOAJ |
| description | Grass carp (Ctenopharyngodon idella Val.) stocked (29 kg/ha) in a small pond reduced the biomass of aquatic macrophytes from 109 g/m2 to 33 g/m2 during one growing season. The only changes in hydrochemical parameters (pH, alkalinity, acidity, BOD5, CODMn, NH4-N, NO2-N, NO3-N, TN, PO4-P and TP) associated with the grass carp stocking were a decrease in pH (from 8.43 to 7.57) and in NO3-N concentration (from 0.99 mg/l to 0.56 mg/l). The increases in organic matter content and NO3-N concentration in the surface sediment layer were higher in the control pond than in the pond stocked with grass carp. No changes were detected in the other parameters (NH4-N, PO4-P and TP) in the upper sediment layer and between all parameters measured in the lower inorganic layer. The grass carp grazing had no impact on phytoplankton biomass (concentration of chlorophyll-a) or species composition. There were no changes either in the abundance or in the species composition of zooplankton and zoobenthos induced by grass carp. Statistically significant indirect changes (in water and sediment chemistry) following the grass carp stocking were connected especially with a reduction in the biomass of the filamentous alga (Cladophora globulina) or rather with its maintenance in the control pond. |
| first_indexed | 2024-04-10T08:27:39Z |
| format | Article |
| id | doaj.art-c45124025c3849bca7024de617fbb6be |
| institution | Directory Open Access Journal |
| issn | 1212-1819 1805-9309 |
| language | English |
| last_indexed | 2024-04-10T08:27:39Z |
| publishDate | 2009-01-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Czech Journal of Animal Science |
| spelling | doaj.art-c45124025c3849bca7024de617fbb6be2023-02-23T03:32:40ZengCzech Academy of Agricultural SciencesCzech Journal of Animal Science1212-18191805-93092009-01-01541314510.17221/1737-CJAScjs-200901-0005Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking densityI. Pípalová0J. Květ1Z. Adámek2Faculty of Agriculture, University of South Bohemia in České Budějovice, České Budějovice, Czech RepublicFaculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czech RepublicResearch Institute of Fish Culture and Hydrobiology, University of South Bohemia in České Budějovice, Vodňany, Czech RepublicGrass carp (Ctenopharyngodon idella Val.) stocked (29 kg/ha) in a small pond reduced the biomass of aquatic macrophytes from 109 g/m2 to 33 g/m2 during one growing season. The only changes in hydrochemical parameters (pH, alkalinity, acidity, BOD5, CODMn, NH4-N, NO2-N, NO3-N, TN, PO4-P and TP) associated with the grass carp stocking were a decrease in pH (from 8.43 to 7.57) and in NO3-N concentration (from 0.99 mg/l to 0.56 mg/l). The increases in organic matter content and NO3-N concentration in the surface sediment layer were higher in the control pond than in the pond stocked with grass carp. No changes were detected in the other parameters (NH4-N, PO4-P and TP) in the upper sediment layer and between all parameters measured in the lower inorganic layer. The grass carp grazing had no impact on phytoplankton biomass (concentration of chlorophyll-a) or species composition. There were no changes either in the abundance or in the species composition of zooplankton and zoobenthos induced by grass carp. Statistically significant indirect changes (in water and sediment chemistry) following the grass carp stocking were connected especially with a reduction in the biomass of the filamentous alga (Cladophora globulina) or rather with its maintenance in the control pond.https://cjas.agriculturejournals.cz/artkey/cjs-200901-0005_limnological-changes-in-a-pond-ecosystem-caused-by-grass-carp-ctenopharyngodon-idella-val-low-stocking-densi.phpaquatic macrophyteswater and sediment chemistryphytoplanktonzooplanktonzoobenthos |
| spellingShingle | I. Pípalová J. Květ Z. Adámek Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density Czech Journal of Animal Science aquatic macrophytes water and sediment chemistry phytoplankton zooplankton zoobenthos |
| title | Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density |
| title_full | Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density |
| title_fullStr | Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density |
| title_full_unstemmed | Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density |
| title_short | Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density |
| title_sort | limnological changes in a pond ecosystem caused by grass carp ctenopharyngodon idella val low stocking density |
| topic | aquatic macrophytes water and sediment chemistry phytoplankton zooplankton zoobenthos |
| url | https://cjas.agriculturejournals.cz/artkey/cjs-200901-0005_limnological-changes-in-a-pond-ecosystem-caused-by-grass-carp-ctenopharyngodon-idella-val-low-stocking-densi.php |
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