Description of the Cyclic Dynamics of the Number of Specimens in the Population of Wood Grouse (Tetrao Urogallus L.) under Long-Term Monitoring
V. G. TELEPNEV1, L. N. ERDAKOV2,3
a:2:{s:4:"TEXT";s:310:"1Institute of Game Manаgement and Fur Farming RAAS, 630108, Novosibirsk, Parkhomenko str., 26
2Novosibirsk State Pedagogical University, 630126, Novosibirsk, Viluiskaya str., 28
3Institute of Systematics and Ecology of Animals SB RAS, 630091, Novosibirsk, Frunze str., 11";s:4:"TYPE";s:4:"html";}
Keywords: wood grouse, number of species, cyclical, period, the spectrum of rhythms, cycles, rhythms, fluctuations
Abstract
The study concerned the features of cyclic dynamics of the number of wood grouse. The investigation based on multi-year (1971-2012) data from the annual route records made on the territory of Novosibirsk hunting enterprise of All-Russian Research Institute for Hunting Husbandry and Livestock Breeding in Kyshtovski district and also in 12 populations of Novosibirsk Oblast monitored from 2000 to 2012. The number of species was estimated using annual route records. Chronograms were examined to look for hidden harmonic components. For every study area a spectrum of population dynamics was drawn. The periods and efficiency of harmonic components were also counted for every spectrum. It was determined that the spectrum of rhythms of grouse population comprises 8 well manifested harmonic components. The most efficient of them were 4.5 years old and 14.9 years old. In different areas, the ratio of the size and efficiency of the cycles of grouse population dynamics varied. The general trend was the increase in power of low frequency cycles to the north.
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