Spectral analysis and population biology analysis of red deer Cervus elaphus L roaring activity Analyse spectrale et biologie des populations analyse de lactivite de brame chez le cerf elaphe Cervus elaphus L

Malgras, J.; Maillard, D.

Comptes Rendus de l'Academie des Sciences Serie III Sciences de la Vie. Octobre; 31910: 921-929


Accession: 038675637

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In population biology, data sets frequently consist of time series which must be analyzed wing specific methods, like spectral analysis. This paper provides an original application to the study of red deer (Cervus elaphus L.) roaring activity, which could be used as a biological indicator of variation of population size. Spectral and cross-spectral analysis have highlighted a strong correlation between the numbers of roaring red deer and the count of roars. These indicate that number of roarings can be confidently used to monitor population size in this species. We did not observe any peak in the number of roars throughout the day. However, a 10-day period of peak intensity of roaring has been found. We propose therefore to sample throughout the entire day during this peak period in order to improve the sampling design.