Prethodno priopćenje

WATER CHEMISTRY IN CARP PONDS

Ljubica Debeljak ; Agronomski fakultet, Zagreb, Svetošimunska 25, Zagreb, Hrvatska
Krešimir Fašaić ; Ribarski centar, Zagreb, Kneza Mislava 2/V, Zagreb, Hrvatska

Sažetak

A research has been done in four carp ponds measuring 100, 173 and 202 ha each. In order to understand ichthyohygienic state of the ponds, basic hydrochemical parameters and qualitative composition of plankton were investigated. The following chemical parameters were investigated: the quantity of O2, CO2, NO3-; NH4+, NO2-,PO43-, consumption of KMnO4 and pH and their horizontal distribution. All the ponds are characterized by dissimilar bioproductivity (tables 1 and 2).
Water chemistry in all the ponds during the culturale season varied within large amplitude. All the parameters were within limits permissible for carp ponds, except for the quantity of dissolved oxygen in ponds of higher bioproductivity (tables 3-6). No matter what the bioproductive value was, hydrochemical parameters in each pond had distinct horizontal distribution tendency.

Ključne riječi

water chemistry; carp pond

Hrčak ID:

77090

URI

https://hrcak.srce.hr/77090

Datum izdavanja:

16.12.1992.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.077 *