Article (Scientific journals)
Using zero-inflated models to predict the relative distribution and abundance of roe deer over very large spatial scales
Bouyer, Yaëlle; Rigot, Thibaud; Panzacchi, Manuela et al.
2015In Annales Zoologici Fennici, 52
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Keywords :
carnivore conservation; external evaluation; herbivore distribution; pellets
Abstract :
[en] In Norway, recovering populations of large carnivores commonly prey on roe deer (Capreolus capreolus). Understanding predator habitat use and ecology requires fine-scaled information on prey distribution and abundance. However, the massive spatial scales at which large carnivores use the landscape presents many practical and statistical challenges for developing functional prey distribution models. Pellet-count data from >1000 km of transects gathered across southeastern Norway from 2005 to 2011 were used to derive a map of relative prey abundance for roe deer. These data were modeled using zero-inflated hurdle models using both environmental and anthropogenic variables. Snow depth and agricultural fields were the most significant variables in explaining both presence and abundance. Internal k-cross validation of the model showed medium accuracy (Spearman r = 0.35), whereas external evaluation carried out on the basis of independently collected snow-tracking data (Spearman r = 0.37) and hunting statistics (Spearman r = 0.88) showed high accuracy. The map generated can facilitate both the study of broad scale processes linking predators and prey as well as roe deer management in southeastern Norway.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Bouyer, Yaëlle ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Biologie du comportement - Ethologie et psychologie animale
Rigot, Thibaud
Panzacchi, Manuela
Van Moorter, Bram
Poncin, Pascal ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Biologie du comportement - Ethologie et psychologie animale
Beudels-Jamar, Roseline
Odden, John
Linnell, John
Language :
English
Title :
Using zero-inflated models to predict the relative distribution and abundance of roe deer over very large spatial scales
Alternative titles :
[fr] Utilisation de modèles zero-inflated pour prédire la distribution et l'abondance relative du chevreuil à large échelle
Publication date :
2015
Journal title :
Annales Zoologici Fennici
ISSN :
0003-455X
Publisher :
Finnish Zoological and Botanical Publishing Board, Helsinki, Finland
Volume :
52
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Norwegian Directorate for Nature Management
RCN - Research Council of Norway [NO]
Offices of Environmental Affairs in the counties of Oslo & Akershus, Østfold, Vestfold, Telemark and Buskerud
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