Purpose. To investigate the peculiarities of growth age-1+ paddlefish depending on water temperature and quantitative parameters zooplankton development in ponds forest-steppe zone Ukraine. Methodology. Age-1+ paddlefish, a North American zooplanktophagus were reared polyculture with cyprinids 72-hectare pond using semi-intensive technology. The stocking density age-1 an average weight 86.5 g w...

Earthworms (Haplotaxida: Lumbricina) are bioindicators of soil fertility. Agricultural systems applied to an agricultural area can affect the presence earthworms there. This study aims determine density in plantations owned by PT. Cinquer Agro Nusantara with Agroforestry-Organic, Monoculture-Semiorganic, Polyculture-Organic, Monoculture-Organic, and farmer-owned Monoculture-Inorganic system. Th...

Loss of nitrogen from the soil-plant system has raised environmental concern. This study assessed the fluxes of nitrous oxide (N2O) in the subsurface flow constructed wetlands (CWs). To better understand the mechanism of N2O emission, spatial distribution of ammonia-oxidizing bacteria (AOB) in four kinds of wetlands soil were compared. N2O emission data showed large temporal and spatial variati...