Journal of Asia-Pacific Biodiversity xxx (2016) 1e7

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Original article Seasonal and altitudinal variation in roe deer (Capreolus pygargus tianschanicus) diet on Jeju Island, South

y y Pradeep Adhikari a, , Seon-Mi Park a, , Tae-Wook Kim a, Jun-Won Lee a, Ga-Ram Kim a, Sang-Hyun Han b,*, Hong-Shik Oh a,* a Faculty of Science Education, Jeju National University, Jeju, South Korea b Educational Science Research Institute, Jeju National University, Jeju, South Korea article info abstract

Article history: In order to understand the feeding ecology and dietary differences of roe deer (Capreolus pygargus Received 29 June 2016 tianschanicus) in different seasons and altitudes, this study was carried out at three altitudinal sites Received in revised form (Songdang 250e270 m above sea level (ASL), Aradong 330e370 m ASL, Mt. Hallasan 1100 m ASL) on Jeju 23 August 2016 Island, South Korea. Altogether, 205 taxa of six categories of foods (forbs-climbers, graminoids, Accepted 1 September 2016 trees, shrubs, conifers, and ferns) were identified using morphological and molecular analyses. The Available online xxx highest number of dietary plants was found in summer (93 taxa) and at Aradong (124 taxa) and lowest at Songdang (71 taxa) and in winter (51 taxa). Food categories were significantly different among the Keywords: ¼ < ¼ < altitude seasons (F 15.646, p 0.05) and altitudinal sites (F 3.941, p 0.05). This study revealed that dietary dietary selectivity of roe deer shifted with seasonal and altitudinal variations and preferred to the nutritive and food categories low fibers food. Jeju Island Copyright Ó 2016, National Science Museum of Korea (NSMK) and Korea National Arboretum (KNA). roe deer Production and hosting by Elsevier. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).

Introduction carrying capacities, and plan to minimize the damage in forest and agriculture (Cornelis et al 1999; Jackson 1974). It helps to under- The roe deer (Capreolus sp.) is a medium sized ungulate, globally stand the quality of the food that significantly impacts on the divided into two species, Capreolus pygargus and Capreolus capreo- growth, reproduction, and existence of animals, resulting in their lus. In West Asia, Central Asia, and Northeast Asia, including South population dynamics (Pekins et al 1998). Therefore, regular studies Korea, two subspecies of C. pygargus (Capreolus pygargus tianscha- on the diet and dietary habit of herbivores are required before nicus and Capreolus pygargus pygargus)areinexistence(Danilkin beginning habitat management and other conservation strategies. 1996). In Jeju Island C. p. tianschanicus is distributed from coastal The dietary selection of herbivores mostly alters with the available areas up to the high altitude region of Mt. Hallasan (Kim 2000; Kim plant resources. Seasonal and altitudinal variations are two et al 2007; Oh et al 2015; Yoon 2003). It is a significantly impacting fundamental factors for determining vegetation diversity herbivore in the grassland and forest ecosystems, mostly affecting (Oommen and Shanker 2005), which regulates the dietary habit of the composition of plant communities, plant productivity, and C. p. tianschanicus, as in other herbivores (Barancekova et al 2010). shaping the structure of vegetation (Danilkin 1996). Dietary plant species of herbivores have been examined in the The study of the feeding ecology of animals is important in order past by using direct observation (Boag et al 1990), feeding site to identify potential food resources (Minder 2012), predict their observation (Kim et al 2012; Mysterud et al 1997; Oh et al 2015), feeding test experiment (Kim 2000), bite count (Ortega et al 1995), fecal analysis (Barancekova et al 2010; Czernik et al 2013; Minder * Corresponding authors. Tel.: þ82-64-754-3280. 2012), and rumen or esophageal content analysis technique E-mail addresses: [email protected] (S.-H. Han), [email protected] (Argunov and Stepanova 2011). Among these techniques, direct (H.-S. Oh). observation is a more economical and practically feasible tech- Peer review under responsibility of National Science Museum of Korea (NSMK) and nique, which does not require advanced instruments and technol- Korea National Arboretum (KNA). y Pradeep Adhikari and Seon-Mi Park contributed equally to this work. ogy (Boag et al 1990). A molecular technique has been recently http://dx.doi.org/10.1016/j.japb.2016.09.001 pISSN2287-884X eISSN2287-9544/Copyright Ó 2016, National Science Museum of Korea (NSMK) and Korea National Arboretum (KNA). Production and hosting by Elsevier. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Please cite this article in press as: Adhikari P, et al., Seasonal and altitudinal variation in roe deer (Capreolus pygargus tianschanicus) diet on Jeju Island, South Korea, Journal of Asia-Pacific Biodiversity (2016), http://dx.doi.org/10.1016/j.japb.2016.09.001 2 P Adhikari et al. / Journal of Asia-Pacific Biodiversity xxx (2016) 1e7 attempted to analyze the plant-derived materials for species identification (Barcaccia et al 2015; Czernik et al 2013; Raggi et al 2015). DNA is a stable molecule carrying the genetic information and its sequences could be used for enzymatic amplification, even using fragmented and damaged DNA sources (Kramer and Coen 2001; Pereira et al 2008). The chloroplast DNA sequences are commonly used in plant identification because of the abundant numbers in a single cell, and they allow for highly conserved se- quences for primer development and inter/intraspecific nucleotide polymorphisms (Czernik et al 2013; Taberlet et al 1991; Taberlet et al 2007). Previous studies on the dietary species of C. p. tianschanicus present on Jeju Island were based on the observation of particular sites and feeding test experiments (Jeong et al 2001; Kim 2000; Oh et al 2015; Yoon 2003) but did not provide sufficient information to explain the relationship between the feeding ecology and envi- ronmental differences. This study was carried out to understand the feeding ecology of C. p. tianschanicus, as well as correlations between dietary plant species and variations in environmental conditions on Jeju Island, South Korea.

Materials and methods

Study area

Jeju Island (33 06ʹe34 00ʹ N and 126 08ʹe126 58ʹ E) is the largest island (1848 km2) of South Korea. This study was carried out at three different altitudinal sites [Songdang, 250e270 m above sea level (ASL); Aradong, 330e370 m ASL; Hallasan 1100 m ASL] of Jeju Island (Figure 1) from July 2014 to April 2016.

Direct observation

Field investigation was carried out every month at all study sites. The browsing pattern of C. p. tianschanicus was checked at every field visit. The plant specimens nibbled by C. p. tianschanicus were collected after morphological identification and field- recording. Each collected specimen was identified again according to Lee (2003). All collected specimens were preserved and depos- ited in the laboratory (JEL100-344). The conservation status of all identified species was checked in the Korean Red List of Threatened Species (NIBR 2012).

e e DNA sequence analysis Figure 1. Map of study sites: A, Songdang, 250 270 m ASL; B, Aradong, 330 370 m ASL; C, Hallasan 1100 m ASL. ASL ¼ above sea level.

A molecular identification technique was applied for those plant specimens which were too damaged by C. p. tianschanicus and were was conducted using the Basic Local Alignment Search Tool of the difficult to identify by their morphological features. Total DNA was National Center for Biotechnology Information nucleotide data- extracted from 0.4 mg of fresh sample using Wizard Genomic DNA base. The putative species were determined based on the similarity Purification Kit (Promega, Wisconsin, USA). Universal primers search results. Identification from the morphological study was designated by Taberlet et al (1991, 2007) were used in polymerase cross-checked with the data obtained from molecular analysis. chain reaction (PCR) for the amplification of three chloroplast DNA regions (trnL intron, P6-loop of trnL intron, and trnL-trnF intergenic spacer). The PCR amplification mixtures contained: total volume 25 Analysis of data ml including 10 PCR buffer,10 mM of dNTP,10 pmol of each primer, 1.5 units Taq DNA polymerase (GenetBio, Daejeon, South Korea), In order to compare the dietary selection of C. p. tianschanicus and 1 ml genomic DNA. The PCR reaction was done using the Gene with respect to different seasons and altitudes, we classified plant Pro Thermal Cycler (Hangzhou Bioer Technology, Hangzhou, ). species into six categories of food (forbs-climbers, graminoids, The PCR mixture underwent 40 cycles with denaturation at 95oC shrubs, trees, ferns, and conifers) based on plant morphology, for 1 minute, annealing at 55oC for 1 minute, and final extension at growth forms, and life span (Barancekova et al 2010; Cornelis et al 72oC for 1 minute. PCR products were separated using 1.5% agarose 1999; Minder 2012). The ShannoneWiener diversity index gel electrophoresis. The purified and amplified PCR product was (Shannon and Weaver 1949) was used to calculate the diversity of sequenced using a dye-termination method with the help of the six categories of foods in each study site and season: DNA sequencing professional company Macrogen Inc. (Seoul, South P 0 Korea). A similarity search for DNA sequences obtained in this study H ¼ (pi ln (pi))

Please cite this article in press as: Adhikari P, et al., Seasonal and altitudinal variation in roe deer (Capreolus pygargus tianschanicus) diet on Jeju Island, South Korea, Journal of Asia-Pacific Biodiversity (2016), http://dx.doi.org/10.1016/j.japb.2016.09.001 P Adhikari et al. / Journal of Asia-Pacific Biodiversity xxx (2016) 1e7 3

th fi where, pi is the proportion of the number of species in the i food Table 2. Species identi cation at different taxonomic levels using molecular category. One way analysis of covariance in IBM SPSS 24.0 (IBM technique. Corp. Armonk, NY, USA) was used to assess the significant differ- Molecular marker No. of DNA sequences Species Genus Family ences among seasons and altitudes. trnL intron 35 14 10 11 P6-loop of trnL intron 32 9 6 17 Results trnL-trnF intergenic spacer 9 2 5 2 Total 76 25 21 30 Dietary plant identification

A total of 205 plant taxa were collected (Table S1), identified, Table 3. List of higher taxonomic levels of dietary plant species of Capreolus pygargus and classified into 34 orders, 56 families, 135 genera, and 165 tianschanicus. species (Table 1). A total of 144 plant taxa were identified using Class Order Family No. of taxa fi morphological analysis, but 61 plant taxa could not be identi ed Leptosporangiatae Filicales Aspidiaceae 1 through morphological analysis and anatomical comparison, so we Lycopsida Lycopodiales Lycopodiaceae 1 used the molecular technique for identification. However, not all Coniferopsida Coniferales Pinaceae 2 plant taxa could be identified up to the species level using DNA Monocotyledonae Aspargaceae 1 fi Commelinales Commelinaceae 1 sequence comparison. Twenty-two plant taxa were identi ed only Cyperales Cyperaceae 8 to species level, but the remaining taxa were identified to the genus Graminales Gramineae 36 (11 taxa) and family (28 taxa) level. Altogether, 76 DNA sequences Liliales Dioscoreaceae 3 determined and identified dietary plants to different taxonomic Iridaceae 1 levels (Table 2). Liliaceae 5 Orchidales Orchidaceae 1 Dicotyledonae (144 taxa) were found in the highest proportion Zingiberales Zingiberaceae 1 followed by Monocotyledonae (57 taxa), Coniferopsida (2 taxa), Dicotyledonae Apiales Pittosporaceae 1 Lycopsida (1 taxon), and Leptosporangiate (1 taxon) (Table 3). Campanulales Campanulaceae 3 Forbs-climbers contributed the highest proportion of the overall Compositae 17 Caryophyllales Amaranthaceae 2 diet (56.58%) followed by graminoids (21.95%), trees (11.21%), Caryophyllaceae 3 shrubs (8.29%), conifers (0.97%), and ferns (0.97%). The highest Chenopodiaceae 1 numbers of plant taxa were observed in the Gramineae family (36 Cucurbitales Cucurbitaceae 3 taxa). Ericales Ericaceae 1 Fagales Fagaceae 2 Gentianales Apocynaceae 1 Seasonal variation in dietary selection Oleaceae 4 Geraniales Geraniaceae 1 The summer season had the highest record of dietary plants (93 Oxalidaceae 1 taxa), followed by spring (80 taxa), autumn (65 taxa), and winter Simaroubaceae 1 Magnoliales Lauraceae 2 (51 taxa). Forbs-climbers contributed a relatively higher proportion Malphighiales Violaceae 2 of the diet in spring (66.25%), summer (54.83%), and autumn Myrtiflorae Halorrahagaceae 1 (55.38%) (Figure 2). Graminoids contributed the second largest part Papaverales Cruciferae 4 of the diet and covered 22.5%, 25.8%, and 27.69% in summer, Parietales Hypericaceae 1 Theaceae 1 autumn, and spring, respectively, with the majority from the Gra- Piperales Saururaceae 1 mineae, Cyperaceae, and Liliaceae families. In winter, the main diet Plantaginales Plantaginaceae 1 of C. p. tianschanicus shifted towards woody trees (29.41%; Acer Polygonales Polygonaceae 6 pseudosieboldianum, Quercus serrata, Viburnum dilatatum, and 1 Pittosporum tobira) and perennial shrubs (27.45%). C. p. tianschani- Menispermaceae 1 Ranunculaceae 10 cus uses deciduous leaves, stems and barks of the trees, and ever- Rhamnales Vitaceae 4 green climbers for its diet. Interestingly, conifers and ferns were Leguminosae 23 also observed in the winter diet. Cereals, cultivated crops, and 13 ornamental plants were also used for diet in late autumn, whole Rubiales Adoxaceae 3 Caprifoliaceae 2 winter, and early spring. 0 Rubiaceae 2 Diversity index H of dietary plant species was highest in winter Sapindales Aceraceae 3 0 0 0 (H ¼ 1.559), followed by summer (H ¼ 1.124), autumn (H ¼ 1.086), Aquifoliaceae 1 and spring (H0 ¼ 0.923). The dietary selection of food categories Celastraceae 1 fl (forbs-climbers, graminoids, shrubs, trees, conifers, and ferns) were Tubi orales Acanthaceae 1 fi Convolvulaceae 1 statistically signi cant among seasons (one way analysis of Labiatae 7 covariance, F ¼ 15.646, p < 0.05). Comparison of means (one way Umbellales Araliaceae 3 Cornaceae 1 Table 1. Taxonomic status of dietary plants found in different study sites. Umbelliferae 3 Urticales Cannabinaceae 1 Taxonomic categories Songdang Aradong Hallasan Overall Moraceae 1 Urticaceae 2 Class 4 5 4 5 Order 19 30 23 34 Family 26 41 29 56 analysis of covariance, Games-Howell test) between seasons Genus 39 66 47 135 Species 54 101 69 165 showed that the highest mean difference was found between Unidentified* 17 23 16 40 winter and spring [I J ¼ 1.849, standard error (SE) ¼ 0.298], fol- Total taxa 71 124 85 205 lowed by winter and autumn (I J ¼ 1.427, SE ¼ 0.338) and winter * Indicates the plant taxa were not identified to species level. and summer seasons (I J ¼ 1.411, SE ¼ 0.319) (Table 4).

Please cite this article in press as: Adhikari P, et al., Seasonal and altitudinal variation in roe deer (Capreolus pygargus tianschanicus) diet on Jeju Island, South Korea, Journal of Asia-Pacific Biodiversity (2016), http://dx.doi.org/10.1016/j.japb.2016.09.001 4 P Adhikari et al. / Journal of Asia-Pacific Biodiversity xxx (2016) 1e7

Spring Summer Autumn Winter

60

50

40

30

20 Taxa number 10

0

Figure 2. Distribution of food categories in different seasons.

Altitudinal variation in dietary selection tianschanicus. Six species of endemic plants of Jeju Island and two species of threatened taxa (Abies koreana and Cirsium rhinoceros) Plants belonging to the forbs-climbers found a high degree of were detected in the diet (Table 5). selection at all study sites (Songdang, 49.29%; Aradong, 62.9%; Diversity index H0 of dietary species at Songdang, Aradong, and Hallasan, 45.88%). The highest number of plant taxa in the forbs- Hallasan was 1.261, 1.137, and 1.342, respectively. Food categories climbers category at all study sites were from the Leguminosae (forbs-climbers, graminoids, shrubs, trees, conifers, and ferns) were family. Graminoids were the second highest at all sites (Songdang, statistically significant among the three altitudinal sites in dietary 29.57%; Aradong, 13.70%; Hallasan, 22.35%) (Figure 3). Gramineae selection (one way analysis of covariance, F ¼ 3.941, p < 0.05). was the most common family of the graminoids, and was dominant Comparison of means (one way analysis of covariance, Games- at all study sites. Shrubs under the families Rubiaceae, Rosaceae, Howell test) between different sites showed that highest mean and Berberidaceae were frequently used in the diet and their difference was found between Hallasan and Songdang (I J ¼ 0.651, consumption was highest at Aradong. With an increase in altitude, SE ¼ 0.260) and the lowest was between Hallasan and Aradong the proportions of trees and conifers in the diet increased. Many (I J ¼ 0.577, SE ¼ 0.260) (Table 6). cases of tearing and peeling the bark from trees were observed in the forests of Aradong and Hallasan. Twelve taxa of trees were Discussion partially damaged at Hallasan and seven taxa at Aradong by C. p. tianschanicus. Two species of ferns (Athyrium koryoense and Lyco- The dietary study of C. p. tianschanicus identified 205 potential podium chinense) were observed at Songdang and Aradong, and taxa, which was broader in terms of species number than previous only one species (A. koryoense) at Hallasan. We have observed the studies carried out on Jeju Island. Compared with previous studies damages in agriculture and horticulture plants by roe deer in on Jeju Island, 31.85% genera and 21.76% species matched those Aradong. Ten species of cultivated plants, including radish, pump- found by Oh et al (2015) and 17.03% genera and 8.16% species kin, nappa cabbage, and deodeok (Codonopsis lanceolata) and three matched those found by Kim (2000). In contrast to Kim (2000) and species of ornamental plants Rhododendron schlippenbachii, Cam- Oh et al (2015), this study was carried out in relatively different elia japonica, and Abelia grandiflora were browsed by C. p. habitats (forests and shrub lands of different altitudes, cultivated

Table 4. Multiple comparisons showing mean difference between seasons in dietary plants species.

Season (I) Season (J) Mean difference (I J)SE p Significance 95% Confidence interval

Lower bound Upper bound

Spring Summer 0.437 0.204 0.145 NS 0.968 0.093 Autumn 0.422 0.233 0.276 NS 1.032 0.188 Winter 1.849 0.298 2.15 10 7 * 2.635 1.063 Summer Autumn 0.015 0.259 > 0.99 NS 0.660 0.691 Winter 1.411 0.319 1.64 10 4 * 2.248 0.575 Spring 0.437 0.204 0.145 NS 0.093 0.968 Autumn Winter 1.427 0.338 3.27 10 4 * 2.312 0.541 Spring 0.422 0.233 0.276 NS 0.188 1.032 Summer 0.015 0.259 > 0.99 NS 0.691 0.660 Winter Spring 1.849 0.298 2.14 10 7 * 1.063 2.635 Summer 1.411 0.319 1.64 10 4 * 0.575 2.248 Autumn 1.427 0.338 3.27 10 4 * 0.541 2.312

NS ¼ not significant; SE ¼ standard error. * Significant difference at the 0.05 level.

Please cite this article in press as: Adhikari P, et al., Seasonal and altitudinal variation in roe deer (Capreolus pygargus tianschanicus) diet on Jeju Island, South Korea, Journal of Asia-Pacific Biodiversity (2016), http://dx.doi.org/10.1016/j.japb.2016.09.001 P Adhikari et al. / Journal of Asia-Pacific Biodiversity xxx (2016) 1e7 5

Songdang Aradong Hallasan

90 80 70 60 50 40 30

Taxa number 20 10 0

Figure 3. Distribution of food categories in different sites.

Table 5. List of endemic flora of Jeju Island found in the diet of Capreolus pygargus tianschanicus.

Family name Scientific name Common name Finding site

Pinaceae Abies koreana Red-cone Korean fir Aradong, Hallasan Fagaceae Quercus glauca Ring-cup oak Hallasan Berberidaceae Berberis amurensis var. quelpartensis Jejudo berberry Songdang, Hallasan Labiatae Scutellaria indica var. coccinea Pink Indian skullcap Aradong Compositae Cirsium rhinoceros Korean prickly thistle Aradong, Hallasan Urticaceae Boehmeria hirtella Hairy long leaf false nettle Aradong

Table 6. Multiple comparisons showing mean difference between sites in dietary plant species.

Site (I) Site (J) Mean difference (I J)SE p Significance 95% Confidence interval

Lower bound Upper bound

Songdang Aradong 0.074 0.208 0.932 NS 0.567 0.418 Hallasan 0.651 0.260 0.036 * 1.268 0.034 Aradong Songdang 0.074 0.208 0.932 NS 0.418 0.567 Hallasan 0.577 0.260 0.071 NS 1.193 0.038 Hallasan Songdang 0.651 0.260 0.036 * 0.034 1.268 Aradong 0.577 0.260 0.071 NS 0.038 1.193

NS ¼ not significant; SE ¼ standard error. * Significant difference at the 0.05 level. land and semi urban areas, and pasture land) in different seasons. selectivity was high. The lower values of diversity indices in spring Kim (2000) used the feeding test experiment on captured animals and summer seasons support these findings. The general approach in an artificial environment and Oh et al (2015) focused their study of diet selection could be to maximize the nutrient (protein and in and around cultivated land; therefore neither of these studies sugar) intake, minimize toxic compounds, and facilitate the intake could represent the actual feeding behavior in free-range condi- of less-fibrous and easily digestible food (Hanley 1997; Hofmann tions in the wild. Dietary species were found to be markedly 1989). Dietary preferences for these food categories were re- different in number and species in C. p. pygargus abundant in Russia ported in previous studies of Jeju Island (Kim 2000; Oh et al 2015; (Argunov and Stepanova 2011) and C. capreolus abundant in West Yoon 2003) and for C. pygargus in Russia (Argunov and Stepanova Asia and Europe (Czernik et al 2013; Mysterud et al 1997; Wallach 2011) and C. capreolus in Europe (Barancekova et al 2010; Minder et al 2010). Changes in altitude and latitude cause climatic variation 2012). In autumn, the abundance of herbaceous plants was which affects the richness, evenness, and diversity of plants species reduced and the dietary selection shifted towards the vegetative (Willig et al 2003). Other environmental factors, such as topog- part of deciduous trees and half woody brows, particularly thorny raphy and soil quality, could also be possible reasons for the large shrubs together with forbs and graminoids, as reported in the diet difference in plants species. of C. capreolus by Minder (2012). The highest value of the diversity Our study revealed that roe deer is an intermediate feeder index in winter and the highest significant difference between (Hofmann 1989) has found to be consumed six categories of plants spring and winter seasons revealed that C. p. tianschanicus (forbs-climbers, graminoids, shrubs, trees, conifers, and ferns) but consumed a broad category of food in the winter. Due to cold and when the resource was plentiful their concentration was found in low moisture in winter, aerial parts of herbaceous and graminoid forbs, climbers, and bamble based food (e.g., Rubus sp.). Bidens plants usually die and their seeds might be in dormant stage frondosa, Paederia scandens, Vicia villosa, Mimosa pudica, Vigna instead of germinating and growing, which resulted in less abun- sinensis, Hedera rhombea, Aster hayatae, C. rhinoceros, and Cassia dance of dietary species. Thus, dependency on forbs-climbers and nomame are some representative species of which dietary graminoids reduced significantly and dietary requirements were

Please cite this article in press as: Adhikari P, et al., Seasonal and altitudinal variation in roe deer (Capreolus pygargus tianschanicus) diet on Jeju Island, South Korea, Journal of Asia-Pacific Biodiversity (2016), http://dx.doi.org/10.1016/j.japb.2016.09.001 6 P Adhikari et al. / Journal of Asia-Pacific Biodiversity xxx (2016) 1e7 covered by other categories of foods such as trees, shrubs, conifers, C. p. tianschanicus during the germinating and growing season can and ferns, including cultivated crops as reported in the dietary dramatically decline the plants communities as well as increase the studies of C. pygargus in Russia (Argunov and Stepanova 2011) and number of threatened species (Goetsh and Wigg 2011). In accor- C. capreolus in Europe (Barancekova et al 2010; Goetsh and Wigg dance with Yoon (2003), we also found threatened plant taxa 2011; Minder 2012; Mysterud et al 1997). (A. koreana and C. rhinoceros) in the diet, which indicated that the Altitude is an important factor for determining species richness regular diet of C. p. tianschanicus consists of some threatened plant and diversity of plants (Oommen and Shanker 2005). The increase taxa. Further study is required to understand the impact of C. p. in elevation and the decrease of temperature leads to a reduction in tianschanicus on the threat to plant species. Crop loss and forest biodiversity (Trigas et al 2013). Lower altitudes have a higher damage caused by C. capreolus in Europe has also been reported temperature compared with high altitudes, which results in high (Holisova et al 1982; Kjostvedt et al 1998; Putman 2012). biodiversity and a more enhanced opportunity for dietary selection. The dietary preference of C. p. tianschanicus found in this study, The Songdang site is pastural land of Jeju Island, located at the in decreasing order, was forbs-climbers, graminoids, shrubs, trees, lowest altitude. Usually, there might be high biodiversity, but conifers, and ferns. The dietary species in spring and summer were grassland management activities and a preference to grow grami- highly selective, with predominantly herbaceous vegetation which noid species has led to the reduction of other categories of plants. A is rich in nutrient content as well as being easily digestible but in total of 10 species of graminoids, including Agrostis clavata, winter all categories of plant and food groups were used in the diet. Imperata cylindrica, Miscanthus sinensis, and Poa annua, were found Our findings showed that the dietary species and habit of C. p. more frequently in the diet. The intermediate value of the diversity tianschanicus shifted with environmental conditions, such as sea- index at Songdang revealed that C. p. tianschanicus was relatively sonal and altitudinal variations. This study suggests that informa- less selective and certain categories of food might be consumed in tion on dietary species in different seasons and altitudes may help higher proportions. The lowest value of the diversity index at to understand the feeding ecology of C. p. tianschanicus, and local Aradong revealed that C. p. tianschanicus was relatively more se- environmental conditions should be considered for natural habitat lective in dietary species. It was selected the forbs-climbers management and adoption of other conservation strategies. belonging to the Compositae, Leguminosae, Rosaceae, and Ranun- culaceae families over other food categories. With an increase in Acknowledgments the altitude, consumption of graminoids, trees, and conifers was increased. At Hallasan there was much snowfall and chilly weather The study was supported by a grant from the Jeju Green Envi- in winter compared with the other sites (Songdang and Aradong) ronment Center under the Research Development Program (2014) and as a result only low numbers of herbaceous plants were and the authors are thankful for the assistance. available, so the major dietary dependency shifted towards the higher and evergreen plants. We found the highest proportion of Appendix A. Supplementary data trees and conifers in the winter diet at higher altitudes, which is in accordance with the study by Mysterud et al (1997) on C. capreolus Supplementary data related to this article can be found at http:// in Norway. dx.doi.org/10.1016/j.japb.2016.09.001. Based on direct observation and browsing signs at the study sites, we predicted that some plants such as Adenophora remotiflora, References Plantago asiatica, C. rhinoceros, Disporum sessile, Chenopodium album, minor, A. hayatae, Potentilla fragarioides var. major, Argunov AV, Stepanova VV. 2011. Diet structure of the Siberian roe deer in Yakutia. Clematis mandshurica, Agrostis flaccidi var. trinii, Arundinaria simo- Russian Journal of Ecology 42:161e164. nii, Cynodon dactylon, Berberis amurensis var. quelpartensis, Rubus Barancekova M, Krojerova-Prokesova J, Sustr P, et al. 2010. Annual changes in roe parvifolius, and Morus bombycis, of the food categories forbs- deer (Capreolus capreolus L.) diet in the Bohemian forest, Czech Republic/Ger- many. European Journal of Wildlife Research 56:327e333. climbers, graminoids, shrubs, and trees, could be the major di- Barcaccia G, Lucchin M, Cassandro M. 2015. DNA barcoding as a molecular tool to etary species of C. p. tianschanicus. Most of these species were also track down mislabeling and food piracy. Diversity 8:2. fi documented as the favorable dietary species of C. p. tianschanicus Boag B, Macfarlane Smith WH, Grif ths DW. 1990. Observations on the grazing of double oilseed rape and other crops by roe deer. Applied Animal Behaviour (Kim 2000). Jeju Island is rich in endemic vascular taxa (90 sp.) Science 28:213e220. (Kim 2009). Geographical isolation and limited interchange of biota Cornelis J, Casaer J, Hermy M. 1999. Impact of season, habitat and research tech- with the inland could be the reason for this high degree of ende- niques on diet composition of roe deer (Capreolus capreolus): a review. Journal of Zoology 248:1951e2207. mism. We found six endemic taxa in the diet, which were also Czernik M, Taberlet P, Swisłocka M, et al. 2013. Fast and efficient DNA-based method described in previous dietary reports of Jeju Island (Kim 2000; Oh for winter diet analysis from stools of three cervids: moose, red deer, and roe et al 2015; Yoon 2003). deer. Acta Theriologica 58:379e386. fi Danilkin A. 1996. Behavioural ecology of Siberian and European roe deer. 1st ed. Dietary resources were found to be suf cient for C. p. tianscha- London: Great Britain by St Edmundsbury Press, Chapman and Hall. p. 277. nicus in spring, summer, and autumn, but not in winter. Due to the Goetsh C, Wigg J. 2011. Chronic over browsing and biodiversity collapse in a forest lack of food in the natural habitat, the C. p. tianschanicus population understory in Pennsylvania: Results from a 60 year-old deer exclusion plot. Journal of the Torrey Botanical Society 138:220e224. was concentrated in and around cultivated land, damaging the food Hanley TA. 1997. A nutritional view of understanding and complexity in the prob- crops. We have listed 13 species of cultivated and ornamental lem of diet selection by deer (Cervidae). Oikos 79:209e218. plants browsed by C. p. tianschanicus. Similar reports were found in Hofmann RR. 1989. Evolutionary steps of ecophysiological adaptation and diversi- fi previous studies carried out on Jeju Island (Jeong et al 2001; Oh et al cation of ruminants: a comparative view of their digestive system. Oecologia 78:443e457. 2015; Yoon 2003). The crop loss was much more frequent in mid- Holisova V, Obrtel R, Kozena I. 1982. The winter diet of roe deer (Capreolus cap- altitude mountainous areas, especially during heavy snowfall. reolus) in the Southern Moravian agricultural landscape. Folia Zoologica 31: e Trees in the forests of Aradong and Hallasan were damaged by C. 209 225. Jackson JE. 1974. Feeding habits of deer. Mammal Review 4:93e101. p. tianschanicus through browsing of the lateral branches and Jeong CD, Kim MH, Park HS, et al. 2001. Analysis of the damage state made by wildlife peeling off the bark of the trees using their antlers (data not in Jeju Island and a study on effective ways to cope with it. Korea: Research report, shown). Kim et al (2012) found 25 species of trees were seriously Department of Agriculture and Forest. pp. 166e170. Kim BS, Oh JG, Oh HS. 2007. The current number of its individuals and management damaged in the southeastern marginal region of the Hallasan plan of roe deer (Capreolus pygarus tianschanicus Satunin) inhabiting Mt. Halla National Park. In addition, overgrazing and browsing activities of (Hallasan), Jeju Island, Korea. Korean Journal of Environment Ecology 21:66e373.

Please cite this article in press as: Adhikari P, et al., Seasonal and altitudinal variation in roe deer (Capreolus pygargus tianschanicus) diet on Jeju Island, South Korea, Journal of Asia-Pacific Biodiversity (2016), http://dx.doi.org/10.1016/j.japb.2016.09.001 P Adhikari et al. / Journal of Asia-Pacific Biodiversity xxx (2016) 1e7 7

Kim CS. 2009. Vascular plants diversity of Jeju Island, Korea. Korean Journal of Plant Ortega IM, Bryant FC, Lynndrawe D. 1995. Contrasts of esophageal-fistula versus Resources 22:558e570. bite-count techniques to determine cattle diets. Journal of Range Management Kim EM, Park Y, Kwon J, et al. 2012. Peeling damage of sapling caused by developing 48:498e502. process of roe deer antlers in warm-temperature forests of Jeju Island. Korean Pekins PJ, Smith KS, Mautz WW. 1998. The energy costs of gestation in White-tailed Journal of Agriculture and Forest Meteorology 14:254e259. Deer. Canadian Journal of Zoology 76:1091e1097. Kim JE. 2000. Study of the native plants preferably fed by the roe deer (Capreolus Pereira F, Carneiro J, Amorim A. 2008. Identification of species with DNA-based capreolus bedfordi) in Mount Halla. Dissertation. Jeju, South Korea: Cheju Na- technology: current progress and challenges. Recent Patents on DNA and Gene tional University. p. 17. Sequences 2:187e199. Kjostvedt JH, Mysterud A, Ostbye E. 1998. Roe deer (Capreolus capreolus) use of Putman R. 2012. Scoping the economic benefits and costs of wild deer and their agriculture crops during winter in the Lier valley, Norway. Wildlife Biology 4: management in Scotland. Scottish Natural Heritage Commissioned Report No. 23e31. 526, Scotland. p. 35. Kramer MF, Coen DM. 2001. Enzymatic amplification of DNA by PCR: standard Raggi L, Bitocchi E, Russi L, et al. 2015. Understanding genetic diversity and popu- procedures and optimization. Current Protocols in Molecular Biology 57:15.1.1e lation structure of a Poa pratensis worldwide collection through morphological, 15.1.14. nuclear and chloroplast diversity analysis. PLoS One 10:e0124709. Lee TB. 2003. Coloured Flora of Korea. Seoul: Hyangmunsa. Shannon CE, Weaver W. 1949. The mathematical theory of communication. Urbana: Minder I. 2012. Local and seasonal variations of roe deer diet in relation to food The University of Illinois Press. p. 125. resource availability in a Mediterranean environment. European Journal of Taberlet P, Coissac E, Pompanon F, et al. 2007. Power and limitations of the chlo- Wildlife Research 58:215e225. roplast trnL (UAA) intron for plant DNA barcoding. Nucleic Acid Research 35:1e8. Mysterud A, Bjornsen BH, Ostbye E. 1997. Effects of snow depth on food and habitat Taberlet P, Gielly L, Pautou G, et al. 1991. Universal primers for amplification of three selection by roe deer (Capreolus capreolus) along an altitudinal gradient in non-coding regions of chloroplast DNA. Plant Molecular Biology 17:1105e1109. south-central Norway. Wildlife Biology 3:27e33. Trigas P, Panitsa M, Tsiftsis S. 2013. Elevational gradient of species National Institute of Biological Resources (NIBR). 2012. Korean Red List of Threat- richness and endemism in Crete-the effect of post-isolation mountain uplift on ened Species: Mammals, Birds, Reptiles, Amphibians, Fishes and Vascular a continental island system. PLoS One 8:e59425. plants. In: Ahn YS, editor. Red list of the Republic of Korea. Incheon, South Korea: Wallach AD, Shanas U, Inbar M. 2010. Feeding activity and dietary composition of National Institute of Biological Resources. pp. 36e53. roe deer at the southern edge of their range. European Journal of Wildlife Oh HS, Han SH, Sung KK, et al. 2015. Survey of crop damage area by roe deer pop- Research 56:1e9. ulation. Research report. South Korea: Jeju Special Self-Governing Province. Willig MR, Kaufmann DM, Stevens RD. 2003. Latitudinal gradients of biodiversity: p. 58. pattern, process, scale and synthesis. Annual Review Ecology, Evolution and Oommen MA, Shanker K. 2005. Elevational species richness patterns emerge from Systematics 34:273e309. multiple local mechanisms in Himalayan woody plants. Ecology 86:3039e Yoon SI. 2003. A study on ecological characteristics of roe deer (Capreolus pygargus 3047. tianschanicus) in Jeju Island, Korea. Dissertation. Korea: Korea University. p. 104.

Please cite this article in press as: Adhikari P, et al., Seasonal and altitudinal variation in roe deer (Capreolus pygargus tianschanicus) diet on Jeju Island, South Korea, Journal of Asia-Pacific Biodiversity (2016), http://dx.doi.org/10.1016/j.japb.2016.09.001