• Journal of the Korean Association of Geographic Information Studies
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• v.20 no.4
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• pp.139-151
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• 2017

The habitat preference of roe deers(Capreolus pygargus) in Jeju island, South Korea was analyzed by using their occurrence probability in MaxEnt model in this study. Totally 490 surveying data were gathered and 15 environmental variables were chosen for the model in which 6 variables out of 15 ones were filtered and finally removed because of there being higher correlation(over 0.7 in correlation coefficient). According to the modeling, roe deers were known to prefer the area ranging from 200 to 700 meter and over 1,500 meter in sea level, where there were not many dominant tree and/or dominant vegetation with low density so that understory vegetation can grow well with plentiful sunlight and can be used as a food of herbivore like roe deers. Otherwise, the region ranging from 700 to 1,500 meter was mostly covered with high density vegetation which cut off sunlight trying to penetrate through the dominant vegetation. It can cause a lower density of vegetation on surface, which can not attract to roe deers.

• Korean Journal of Environment and Ecology
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• v.30 no.1
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• pp.39-47
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• 2016

Recently, it has been reported that morphologically and genetically different two Siberian roe deer (Capreolus pygargus, Pallas, 1771), in Mainland and in Jeju island. Until now, this roe deer has not been clearly taxonomy of Siberian roe deer in Korean peninsula. So, the aim of this study was to compare the skull morphometrics of mainland and Jeju roe deer to obtain more information on the species status of C. pygargus and study the distribution of roe deer subspecies in this region. A total of 50 skulls of adult roe deer was compared and analyzed. The maximum skull length, condylo-basal length, basilar length, maximum skull width, cheek-bone width, interorbital width, rostrum length, length of upper tooth row from the Siberian roe deer in Jeju island were significantly smaller than those of the deer in mainland. Length of the skull was the principal factor of interpopulational variability in roe deer. Variation was not distributed along latitude, longitude, or elevation, but those factors did influence the variation through effects on primary production, which in turn caused isolated differences in skull morphology apparently related to types of forage selected by roe deer in various geographic areas. According to the analysis results of the skull characters, Mainland roe deer was more similar to C. p. tianschanicus which is a subspecies of Siberian roe deer. In addition, Jeju roe deer showed distinct differences compared to European roe deer, 3 subspecies of Siberian roe deer, so it appeared that they could be a unique native species inhabited only in Jeju Island. Because Siberian roe deer in Jeju Island can be classified at subspecies level in this study.

• Journal of Veterinary Clinics
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• v.31 no.1
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• pp.6-10
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• 2014

Siberian Roe deer which inhabits Jeju Island is unique native species. Most of all the roe deer infect a lot of ticks, which can affect its population directly and can act as a vector to spread vector-borne diseases. The purposes of this study were to identify the ticks and detect the piroplamsosis on the roe deer in Jeju island. We collected ticks and blood samples in 23 roe deer rescued and treated at the Jeju Wildlife Rescue Center. As a result, we identified the one species of ticks, Haemaphysalis longicornis in roe deer and detected the closely related to Theileria luwenshuni in all blood samples (100%) and 8 pooled ticks (34.8%). These results indicate that there may be a high prevalence particularly of T. luwenshuni infection in Jeju wild roe deer and H. longicornis is a major vector of these diseases. It suggested that Jeju roe deer may act as reservoirs for these zoonotic pathogens.

• Animal Systematics, Evolution and Diversity
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• v.16 no.2
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• pp.169-176
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• 2000

As one of researches to clarify the taxonomic status of roe deer from Jeju island (C. pygargus tianschanicus), we analyzed partial sequences of mtDNA cytochrome b gene from six roe deers at Jeju island in Korea. Maximum nucleotide Tamura & Nei's distance among three haplotypes was 0.005, and this distance was comparable to the diversity within other roe deer subspecies: it is suggested that roe deers from the mainland dispersed rarely to Jejudo Island, although further analyses are ne-cessary to decide whether or not it was occurred by human introduction. Furthermore, nucleotide distance between cytochrome b sequences of roe deers from Jeju (C. pygargus tianschanicus) and the sequence of roe deer from west Siberia(C. p. pygargus), obtained from GenBank, was average 0.013, and it is suggested that C. p. tianschanicus diverged from C. p. pygargus of west Siberia 0.65 Myr ago.

• Proceedings of the Zoological Society Korea Conference
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• 2001.10a
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• pp.134.3-134
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• 2001

• Proceedings of the Korean System Dynamics Society
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• 2006.11a
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• pp.71-92
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• 2006

• Proceedings of the Zoological Society Korea Conference
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• 1999.04a
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• pp.44.2-44
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• 1999

• KSBB Journal
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• v.23 no.1
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• pp.77-82
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• 2008

We investigated several biological activities using the ethanol extract and its fractions from Pimpinella komarovii leaves to evaluate the usefulness of its extract as a functional biomaterial. The ethanol extract showed antioxidant activities, such as DPPH scavenging activity $(IC_{50}=231.8{\mu}g/m{\ell})$. superoxide scavenging activity $(IC_{50}=23.6{\mu}g/m{\ell})$, and xanthine oxidase inhibitory activity $(IC_{50}=587.8{\mu}g/m{\ell})$. Its EtOAc fraction showed the strongest antioxidant activities among several fractions. The inhibitory effect of ethanol extract on tyrosinase activity was higher than water fraction. When $50{\mu}g/m{\ell}$ of EtOAc fraction was applied, the inhibition ratio of tyrosinase activity was much higher (42%) than that of melasolv. The EtOAc fraction also showed higher inhibitory effect on melanogenesis in Melan-a cells. The n-hexane and EtOAc fractions dose-dependently inhibited the NO production in a RAW 264.7 cells. These results suggest that extract of Pimpinella komarovii could be used as functional biomaterial in developing a skin whitening agent having the antioxidant activity.

• Korean System Dynamics Review
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• v.12 no.2
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• pp.95-126
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• 2011

This paper aims at developing a System Dynamics model with an augmented predator-prey interaction structure to deal with the population management of roe deer in Jeju, Korea. Although people still regard the creature as one of the important tourist attractions, there has been much debate on the issues of the appropriateness of the population size of roe deers because they have been stigmatized as crop damagers, and roadkill/poaching victims due to their natural habit to move around from the top mountain to the lowland of the island. The model is therefore to incorporate these migrating and grazing behaviors into an augmented Lotka-Volterra model coupling roe deer population in both parts of the island to that of predators and preys of the species. The authors also provide a comprehensive set of dynamic hypotheses and relevant CLD/SFD to understand the population dynamics of roe deer and co-evolving species and perform the steady-state analysis of the proposed equation system to verify the model behavior of the numerical example lastly presented in this paper.

• Journal of the Korean Association of Geographic Information Studies
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• v.16 no.2
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• pp.65-74
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• 2013

A research program for the roe deer (Capreolus pygargus) has been set up at the Jeju Experimental Forest of Warm-temperate and Subtropical Forest Research Center in Jeju Island. To explore the home range size and habitat environment, 3 males and 3 females have been captured and released with GPS-CDMA based telemetry since 24th April 2012. Among them 2 females were captured at Hannam Forest of Seoguipo, were pregnant and monitored by the tracking system. There are significantly different patterns in behavior around the parturition. After parturition they show recurrence behavior toward one point in the forest, while they have irregular patterns in moving before. To calculate the home range size, the MCP (minimum convex polygon) and Kernel Method are applied through the extension of ESRI ArcView GIS 3.2a. The pregnant female captured 9th May 2012 has the size of MCP=67ha and Kernel 95%=0.5ha and the pregnant female captured 12th July 2012 has the size of MCP=82ha and Kernel 95%=0.9ha. Although a fawn could move immediately just after the birth likely others to avoid any risks, they stay at very narrow space significantly, and the size become wider when more time goes by. Furthermore, they mainly have a home range away from human activity area such as forest tracking roads. The habitat environment for the parturition is summarized as 40years old cryptomeria forests with new sprouting shrubs for foods, which are the controlled forest through the thinning and removing shrubs 2 years ago. This means that forest works could cause positive results for the parturition and survival of young. The period of parturition is earlier than highland in Jeju Island, the size of home range is narrower than other countries, and the habitat environment of the shelter for a fawn is similar to previous research in other countries.