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Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density
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SYSNO ASEP 0342898 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Limnological changes in a pond ecosystem caused by grass carp (Ctenopharyngodon idella Val.) low stocking density Author(s) Pípalová, I. (CZ)
Květ, Jan (UEK-B) RID
Adámek, Z. (CZ)Number of authors 3 Source Title Czech Journal of Animal Science. - : Czech Academy of Agricultural Sciences - ISSN 1212-1819
Roč. 54, č. 1 (2009), s. 31-45Number of pages 15 s. Language eng - English Country CZ - Czech Republic Keywords aquatic macrophytes ; water and sediment chemistry ; phytoplankton Subject RIV EH - Ecology, Behaviour CEZ AV0Z60870520 - UEK-B (2005-2011) UT WOS 000263345400005 Annotation Grass carp (Ctenopharyngodon idella Val.) stocked (29 kg/ha) in a small pond reduced the biomass of aquatic macrophytes from 109 g/m(2) to 33 g/m(2) 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. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2011
Number of the records: 1