Mapping trends of large and medium size carnivores of conservation interest in Romania

Authors

  • Constantin Cazacu Department of Systems Ecology, Bucharest University, Splaiul Independenţei 91-95 Sector 5, 76201, Bucharest, Romania
  • Mihai Cristian Adamescu Department of Systems Ecology, Bucharest University, Splaiul Independenţei 91-95 Sector 5, 76201, Bucharest, Romania
  • Ovidiu Ionescu Transilvania University, Faculty of Silviculture and Forest Engineering, Department of Silviculture, 1 Beethoven Lane, 500123, Brașov, Romania; Forest Research and Management Institute, 13 Cloșca Street, 500040, Brașov, Romania
  • Georgeta Ionescu Transilvania University, Faculty of Silviculture and Forest Engineering, Department of Silviculture, 1 Beethoven Lane, 500123, Brașov, Romania; Forest Research and Management Institute, 13 Cloșca Street, 500040, Brașov, Romania
  • Ramon Jurj Forest Research and Management Institute, 13 Cloșca Street, 500040, Brașov, Romania
  • Marius Popa Forest Research and Management Institute, 13 Cloșca Street, 500040, Brașov, Romania
  • Roxana Cazacu Forest Research and Management Institute, 13 Cloșca Street, 500040, Brașov, Romania
  • Ancuta Cotovelea 2Transilvania University, Faculty of Silviculture and Forest Engineering, Department of Silviculture, 1 Beethoven Lane, 500123, Brașov, Romania; Forest Research and Management Institute, 13 Cloșca Street, 500040, Brașov, Romania

DOI:

https://doi.org/10.15287/afr.2014.170

Keywords:

carnivore population trend, game management, Man Kendall statistics, trend detection, GIS

Abstract

We analysed yearly estimates of population size data during 2001-2012 for five carnivores species of conservation interest (Ursus arctos, Canis lupus, Lynx lynx, Felis silvestris and Canis aureus). Population size estimations were done by the game management authorities and integrated by the competent authorities on the Ministry of Environment and Climate Change. Trends in data were detected using non-parametric Mann-Kendall test. This test was chosen considering the short length of data series and its usefulness for non-normal distributed data. The trend was tested at three spatial scales: game management units (n=1565), biogeographical region (n=5) and national. Trends depicted for each game management unit were plotted using ArcGIS, resulting species trend distribution maps. For the studied period increasing population trends were observed for Ursus arctos, Canis lupus, Canis aureus and Lynx lynx, while for Felis silvestris there was no trend recorded. Such an analysis in especially useful for conservation proposes, game management and reporting obligations under article 17 of the EC Habitat Directive, using population trend as a proxy for population dynamics. We conclude that the status of the five carnivore species is favourable during the study period.

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Published

2014-06-04

Issue

Vol. 57 No. 1 (2014)

Section

Research article

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