We visited 51 lakes in Costa Rica as part of a broad-based survey to document their physical and chemical characteristics and how these relate to the mode of formation and geographical distribution of the lakes. The four oxbow lakes were low in elevation and tended to be turbid, high in conductivity and CO2, but low in dissolved O2; one of these, L. Gandoca, had a hypolimnion essentially compos...

In Hungary, irrigation determines the success of water-intensive beet cultivation. Taking into account guidelines circular economy, we investigated effect with pre-treated nutrient-rich effluent from an intensive catfish-farm on growth stages sugar and fodder beet. two-year-experiment (2020, 2021), two (‘Helenika’, ‘Grandiosa’) (‘Rózsaszín Béta’, ‘Béta Vöröshenger’) cultivars were grown. additi...

Caiman yacare (lagarto) and Melanosuchus niger (black caiman), sympatric species in the Bolivian Amazon basin, have been severely overexploited in the past. We present the results of a standardized survey of C. yacare and M. niger populations in order to evaluate their actual population status in twelve oxbow lakes of the Ichilo River floodplain. Additionally we explored the effect of environme...