Assessed abundance and population trends of wolf in Croatia

Over the past eight years, the State Institute for Nature Protection, in cooperation with scientists from the Faculty of Veterinary Medicine of the University of Zagreb, has developed an Annual Report on the state of the wolf population as part of the implementation of the Wolf Management Plan. In assessing population sizes, all available data on the wolf are considered (livestock damages, telemetry research, photo trap monitoring, genetic research, etc.), including snow track monitoring, and expert estimates. Authorised experts of the Ministry of Environmental and Nature Protection, who are also members of the wolf and lynx intervention teams, map their estimates of wolf packs and estimated numbers of individuals per pack onto the habitat maps. Experts enter the data on the number and name of packs by location onto specific forms, listing the general population trends of wolves in that area (declining, unchanged, increasing) and important remarks. The expert assessments are interpreted for the telemetrically monitored wolf pack territories, and the average daily movements of wolves in a given habitat type. Due to the large number of border packs, the assessments are adjusted in such a way that the number of individuals in border packs is divided in half, due to their constant crossing of borders and time spent in neighbouring countries, and this final figure is added to the assessed numbers for the remainder of Croatia.

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