Juniper Publishers Annals of Reviews and Research

                         Juniper Publishers-Open Access Journal of Annals of Reviews & Research   Abstract This study was conducted to investigate the effect of linear and non-linear methods of estimating fish mortality on feed conversion ratio (FCR) and profitability of cage cultured   Oreochromis shiranus   (Makumba). Two treatments were used, designated as T 1   and T 2   and were replicated three times. In each cage, 105000 fish were stocked at an initial average body weight of 1.59±0.04g and cultured for 365 days. The fish was fed twice a day with formulated feed (36% Crude Protein) at 4-1% body weight with feed adjustments based on standing biomass from linear and non-linear estimated mortality. The results showed that there were significant differences between the two treatments on FCR . Final mean weight was 179.41±7.71g and feed convers...

                         Juniper Publishers-Open Access Journal of Annals of Reviews & Research   Abstract Fluvial islands are very changeable areas once they have vertical accretion by sediment from the flood as the same time as suffer erosion by channel flow. This factor acts directly over the characteristics of their vegetal cover in terms of composition and successional stages. In an island of the Upper Paraná River a floristic composition survey was performed in order to evaluate the plant succession stage of three forest fragments. The study areas were: Forest 1, an abandoned pasture under successional process over the last 10 years; Forest 2, a 55-year-old primary forest settled over a sand bar; and Forest 3, a fragment of a remaining forest. Floristic composition analysis showed that island soil has disturbed by trampling cattle reflecting on the species se...