This article focuses on the profile and satisfaction level of migration project Venezuelan community that arrived in Spain between 1998 2015. The empirical analysis a survey conducted to 383 Venezuelans illustrates expulsion factors activated emigration, achievement expectations, integration country destination, focusing theory social reproduction as an emigration strategy. first stage marks sl...

Peckarsky (1979) presents in situ studies of the movements of benthic stream invertebrates into and out of experimental cages. The conclusions drawn from these studies fall into two categories: species or species aggregates were characterized as having density-dependent or density-independent movements; and equilibrium benthic densities in cages were calculated and compared to natural densities...