The influence intenzity of eutrophication on fishpond yield

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

Petr Spurný¹  Tomáš Brabec¹  Radovan Kopp¹  Jan Mareš¹  Tomáš Vítek¹  Lucie Straková¹  Jan Šťastný¹ 

[1] Ústav zoologie, rybářství, hydrobiologie a včelařství, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika;

关键词: fish pond;    fisherymanagenent;    cyanobacteria;    eutrophication;   

DOI  :  10.11118/actaun201159060053

来源: DOAJ

【 摘 要 】

Fish ponds have been always built for purpose of fish farming and some additional functions. We evaluated fish farming operation (in years 1990–2007) on the Sykovec and Medlov pond in altitude 700 meters above sea level and Jaroslavický dolní pond in altitude 200 m. The samples for hydrochemical and hydrobiological analyses were taken regularly at monthly intervals in 2008. We chose some parameters as a total nitrogen (NT), total phosphor (PT), chlorophyll-a and chemical oxygen demand (COD) and structure of phytoplankton which has an impact on fish production. We compared our result with former research work from 1996–1997. Higher levels of monitored parameters have got a negative effect on spectrum of fish kind in managed fishponds.

【 授权许可】

Unknown