Ecological Questions 13/2010: 47 – 53 DOI: 10.2478/v10090–010–0015–4 Wolves in the Toruń Basin Piotr Sewerniak Department of Soil Science, Institute of Geography, Nicolaus Copernicus University, Gagarina 9, 87-100 Toruń, Poland, e-mail:
[email protected] Abstract. The present wolf population of the Toruń Basin is one of the very few that exist in the central and the western part of Po- land. Wolves populated the region at the turn of the 20th and 21st centuries, and at least since 2004 they reproduced in the forests on both sides of the Vistula River. The population from the Toruń Basin is probably an important source of wolves that colonize Western Poland and spread to Western Europe. However, the human pressure on the environment is continuously increasing in the Toruń Basin, therefore the future stability of the existence of wolves in the region is uncertain. The aim of the paper is to present the main data on the occurrence of wolves in the Toruń Basin, together with the main human threats to the wolf population in this region. Key words: Canis lupus, the Toruń Basin, the Bydgoszcz Primeval Forest, predators, Poland. 1. Introduction The Toruń Basin is a large, latitudinal elongated area (about 250 square km), built mainly of fluvial and eolian sands. The region is characterized by poor soils, not suitable for agricultural purposes (Bednarek & Jankowski 2006). Con- sequently, the afforestation rate is high in the Toruń Basin, with Scots pine (Pinus sylvestris) as a dominant tree spe- cies in forest stands on poor habitats. The high proportion of forest in the land use of the Toruń Basin results in the fact that the region is an important refuge of wild animals, such as the wolf (Canis lupus).