Limited mapping of migrations hampers conservation
The estimation of large carnivore populations presents major logistical challenges. We examined trends in the wolf Canis lupus population in Finland using two independent methods. We compared track indices from an annual wildlife winter census based on a constant, nationwide network of transect lines (wildlife triangles) with the number of reproductions confirmed to occur in the same year during 1996 to 2009. Nationwide, and in the eastern management zone, which is the core area of Finnish wolves, the frequency of wolf tracks in wildlife triangles (% of all triangles counted in a given year having wolf tracks) predicted quite well the log transformed number of reproductions taken place in these areas (adjusted R2‐values for linear regression models 0.59 and 0.68, respectively), while not for the western management zone (R2 = 0.38). However, although mean wolf densities were low (< 1 wolf/1000 km2 nationwide and <3 wolves/1000 km2 in the eastern zone), track indices could detect the major trends in Finland's wolf population. A clear reason for this was the substantial changes in population size during the study period.
To cope with the funding constraints of biodiversity protection, nature-based tourism, which is regarded as an important ecosystem service, is considered as an option for creating revenues for biodiversity conservation. Here we show that Finnish national parks (NPs) with high biodiversity values are more attractive for visitors than parks with lower biodiversity values, providing evidence on the direct linkage between biodiversity protection and the provisioning of ecosystem services in protected areas. We found that the number of visits NPs received annually, i.e., their attractiveness, was positively associated with the number of Natura2000 habitat types and occurrences of species considered threatened in Finland according to the International Union for the Conservation of Nature and Natural Resources (IUCN) Red List Categories and Criteria. Interestingly, recreational use also overlapped spatially with areas containing high biodiversity values: the number of occurrences of threatened species and Natura2000 habitat types were on average higher close to recreational routes than among randomly picked control areas within NPs. Our results emphasise the need for careful planning and park management in protecting biodiversity in NPs. However, these connections between biodiversity and recreational use of Communicated by
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