Analysis of Seasonal Activity Rhythm and Interspecific Differences in Sympatric Ungulates in Jiangxi Taohongling Reserve
From March 2017 to May 2019,we used infrared camera to monitor the seasonal activity rhythm of the sympatric-distributed ungulates in the Taohongling Sika Deer National Nature Reserve.During 15,208 effective camera working days,three species of ungulates,namely,sika deer(Cervus nippon),wild boar(Sus scrofa),and Reeves'munt-jac(Muntiacus reevesi)were captured with relative abundance index(RAI)of 3.90%,9.72%,and 39.59%,respectively.The annual activity pattern analysis showed that monthly RAIs(MRAI)of sika deer and wild boar was the highest in April,the MRAI of Reeves'muntjac was the highest in May and July,and all the three species became inactive in December.With the"overlap"statistical package in R,we used the kernel density estimation and coefficient of overlap to analyze the relevant monitoring data.The statistical results indicated that:(1)In the daily activity rhythm,sika deer was mainly active at night,supplemented by morning and dusk activities,while wild boar and and Reeves'muntjac were mainly active in the morning and dusk and supplemented by day activities.(2)The daily activity rhythm of sika deer had obvious seasonal varia-tion,and the overlap coefficient between spring and summer is the highest(Δ=0.83),while the daily activity rhythm of Reeves'muntjac and wild boar had no obvious seasonal changes.(3)There was a certain difference in the overlap coeffi-cient of the daily activity rhythm between different species.The daily activity patterns of wild boar and Reeves'muntjac are highly overlapping,but their peak activity is basically staggered from that of sika deer.The study revealed the activity rhythm and seasonal differences of three species of ungulates,which laid a foundation for further exploring the co-existence mechanism of sympatric-distributed ungulates.
Infrared camera technologyTaohongling ReserveUngulateActivity rhythmSeasonal variation
NETL
NSTL
万方数据
