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… closed natural migrations routes; can the fish pass these migration barriers? Implementation: Between 2000 and 2006 a … system originally installed in the Rhine delta to study migration in sea trout and salmon), and one of these fish was … release was planned for April 2010, when 30 Tortoises en route to Cousine Island Reptiles 100 juveniles weighing …

… capacity of existing land resources as well as to migration of the population from areas affected from both … globe, farm labour shortage mainly due to rural to urban migration in search of easier means of income sources is the … Centre d'Ecologie Fonctionnelle et Evolutive CNRS – 1919, route de Mende. 34293 Montpellier cedex. France. …

… minimum effective size and viability requirements, species migration requirements, integrity, ecological processes and … pass over a concentrated period of time (e.g., during migration). Precedents for thresholds for congregations … the population may pass through (e.g., along a migratory route) over a relatively short period, even if few …