01976nab a2200325 a 4500003000900000005001700009008004100026041001300067100002700080700003000107245012000137264000900257300001700266500010000283520091300383650003001296650003201326650002401358650002001382650002801402650002601430650002101456650003401477773005301511942000801564035001701572001000701589999001901596040003501615AR-ReUNN20260702003100.0260630s2007    ag |||||||||||||||||spa  0 aspaaeng1 aPizzolon, Lino91476661 aQuirós, Rolando914766710aProductividad primaria en un estanque de cría de peces (31° 12´ S; 57° 55´ W) / Lino Pizzolon, Rolando Quiros 1c2007  a18 páginas  aDisponible en estante de INICNE  Primary productivity in a fish pond (31° 12´ S; 57° 55´ W)  aGross and net primary productivity, respiration and related parameters were estimated in an experimental fish pond where silverside (Basilichthys bonariensis) were bred, using the oxygen light-dark bottle method. The results obtained showed a positive correlation (r = 0.83, p < 0.005) with temperature. The chlorophyll a concentration, the number of phytoplankton cells and the Secchi disk showed no correlation with primary productivity.  The mean gross primary productivity on sunny days was 2022 g C m -2 day -1 in the deepest zone, with a 47% variation. For the whole pond the results was 538.7 kgC ha-1 year -1 considering a correction for statistical average of sunny days. The respiration/gross primary relation was 0.50 for the whole pond.  With comparative purposes the primary productivity was estimated with the simplified method of daily curves and by the method of oxygen changes in open waters 4aPeces de Agua Dulce96471 4aEstanques Piscicolas963005 4aProductividad99641 4aArgentina94258 4aFreshwater Fish9117439 4aInland Waters9117440 4aBreeding9147041 4aBiological Production91471050 tEcosurx0325-108Xgv. 11 n. 21-22 (1984)w234603  cART  a(INICN)39234234804  c234804d234804  aAR-ReUNNbspacAR-ReUNNeaacr2