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Article
H. K. Schulz, Auteur ; P. Smietana, Auteur ; R. Schulz, AuteurOn the basis of inventory data collected since 1994, the recent stocking situation for freshwater crayfish in three 10 by 10 km study sites in northeastern Germany (Uckermark) and northwestern Poland (Szczecin area, Koszalin area) is described. [...]
Article
F. Gherardi, Auteur ; P. Smietana, Auteur ; P. Laurent, AuteurThe main object of the present essay is to summarise some aspects underlying the interactions between non-indigenous (NICS) and indigenous (ICS) crayfish species. The discussion has been also extended to the effects exercised by NICS on the natu[...]
Article
R. Schulz, Auteur ; P. Smietana, Auteur
Article
D. Wysocki, Auteur ; J. Adamowicz, Auteur ; R. Kosciow, Auteur ; P. Smietana, AuteurThe size and quality of breeding territory of Blackbird populations were studied in 1997-2000 in two parks of Szczecin (NW Poland). The Blackbird density as well as timing of territory occupation influenced the territory size. A significant redu[...]
