Effect of Snow Cover on the Distribution of Non-migratory Sika Deer on the Top of Mt. Tanzawa, Japan

Borkowski, Jakub; Habuto, Hiroki; Furubayashi, Kengo

doi:10.1007/bf02348332

Cited by 10 publications

(7 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In March 1995 a combination of high population density and deep snow led to a high mortality rate among deer, with the result that direct observations stopped because individuals were seen only sporadically. In 1994, although snow covered the study area from mid-January onwards, it was too shallow in January to affect food availability and the consequent deer space use pattern; however, this did occur in February 1994 (Borkowski et al 1996). In 1995, both January and February were snowless.…”

Section: Study Areamentioning

confidence: 93%

Influence of the density of a sika deer population on activity, habitat use, and group size

Borkowski¹

2000

Can. J. Zool.

Self Cite

View full text Add to dashboard Cite

The influence of population density of sika deer (Cervus nippon) on their activity, habitat use, and habitatrelated group size was studied in the area of Japan's Tanzawa Mountains in early winter. The percentage of active sika deer was higher in January 1994 (a low-density period) than in January 1995 (a high-density period). The pattern of habitat use differed between periods. During the high-density period, deer increased their relative use of lower quality habitats. A possible mechanism and implications of this are discussed. Changes in population density had a positive effect on group size in sika deer, though the variation among habitat types supported the hypothesis that food biomass is an important determinant of group size.

show abstract

Section: Study Areamentioning

confidence: 93%

Influence of the density of a sika deer population on activity, habitat use, and group size

Borkowski¹

2000

Can. J. Zool.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although in 1994, snow depth in the study area rarely exceeded 50 cm, it contributed to the deer slope use in winter (Borkowski, Habuto & Furubayashi, 1996).…”

Section: Study Areamentioning

confidence: 98%

Seasonal and diel variation in group size among Japanese sika deer in different habitats

Borkowski

Furubayashi

1998

Journal of Zoology

View full text Add to dashboard Cite

In¯uence of habitat type on the group size of sika deer was analysed on the basis of 2718 individuals observed in 708 groups, in the area where deer are under pressure neither from predators nor hunters. From spring to autumn, the percentage of individuals observed in the largest groups in open woodland was higher than both in clearings and closed woodland. In early winter, the percentage of individuals aggregated in the largest groups was highest in the clearings, while in late winter, the percentage of individuals observed in the largest groups was highest in the closed woodland. Besides, the percentage of large groups observed in the morning and evening (when most of deer are active) was much higher than during daytime (when level of deer activity is lower). Changes in food availability are suggested to be a factor responsible for variation in sika deer group size in different habitats.

show abstract

“…From these data, we calculated the percentage of each landscape characteristic in each mesh by using Quantum GIS (Version 1.6.0, http://qgis.osgeo.org/, accessed 2 Aug 2012). Previous studies have found that deer species avoid areas of deep snow (Borkowski et al 1996, Kiffner et al 2008, Honda 2009) because the snow interferes with their movement (Takatsuki 1992) and covers their food (Robinson and Merrill 2011). However, Kaji et al (2010) pointed out the importance of evergreen forest, where the snow is less deep than in other habitats because some of it is caught by the evergreen canopy.…”

Section: Data Sourcesmentioning

confidence: 99%

Estimation of deer population dynamics using a bayesian state-space model with multiple abundance indices

Iijima

Nagaike

Honda³

2013

Jour. Wild. Mgmt.

View full text Add to dashboard Cite

Deer population control is important in wildlife management, because overabundance of deer is a problem worldwide. For practical deer population control, deer population dynamics and the factors that influence them need to be evaluated in low‐cost and time‐efficient ways. However, in traditional methods of estimation, such as cohort analysis, large numbers of deer need to be caught for many years, and the ages of the deer must be determined. We estimated deer population dynamics by using a Bayesian state‐space model with multiple deer abundance indices (seen deer per unit effort, pellet group count, and block count) and numbers of deer hunted and culled in Yamanashi Prefecture, central Japan. In the state process of our state‐space model, latent deer abundance at year t in location m (Dt,m), with m being each cell of a grid mesh covering Yamanashi Prefecture, was assumed to decrease annually through hunting and culling, to increase with the population growth rate of each mesh (rm; which was determined from the percentages of forest, evergreen forest, and artificial grassland), and to fluctuate stochastically. In the observation process, Dt,m was assumed to be correlated with the deer abundance indices and a Gaussian white noise in the deer abundance indices. The estimated Dt,m was correlated with each deer abundance index, but the correlation coefficient was the greatest for pellet group density. The percentage of hunted and culled deer needed to reach 30% to reduce the annual growth rate (Dt,m/Dt−1,m). Increasing the percentage of artificial grassland increased rm. Our results showed that 1) deer abundance could be estimated by using only deer abundance indices in addition to population growth rate and the percentage of hunted and culled deer; and 2) preventing the intrusion of deer onto artificial grassland and intensive culling on artificial grassland were important to decrease deer abundance. © 2013 The Wildlife Society.

show abstract

Effect of Snow Cover on the Distribution of Non-migratory Sika Deer on the Top of Mt. Tanzawa, Japan

Cited by 10 publications

References 9 publications

Influence of the density of a sika deer population on activity, habitat use, and group size

Influence of the density of a sika deer population on activity, habitat use, and group size

Seasonal and diel variation in group size among Japanese sika deer in different habitats

Estimation of deer population dynamics using a bayesian state-space model with multiple abundance indices

Contact Info

Product

Resources

About