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The sika deer (Cervus nippon), introduced or released for various purposes, has rapidly expanded its populations worldwide owing to its high environmental adaptability, and is now recognized as a major driver of ecological and economic damage in forests and farmlands. Island ecosystems are particularly vulnerable to invasive species because of their limited area, isolation, and high levels of native species; however, ecological research on the impacts of invasive sika deer remains scarce in Korea. Therefore, this study aimed to elucidate the feeding patterns of sika deer inhabiting three offshore islands of the Yellow Sea—Gureopdo, Nanjido, and Anmado—using fecal DNA metabarcoding. Between March and October 2024, a total of 45 fecal samples (15 per island) were collected, and dietary plant taxa were identified through DNA extraction and next-generation sequencing-based metabarcoding. The results revealed a strong dietary dependence on Carex in Gureopdo, a mixed feeding strategy involving both trees and herbs in Nanjido, and a wide range of resources including cultivated and ornamental plants in Anmado. These findings demonstrate that invasive sika deer adopt different feeding strategies depending on vegetation structure and environmental conditions, highlighting their potential impacts on island ecosystems. To our knowledge, this is the first study in Korea to clarify the feeding ecology of invasive sika deer using molecular techniques, providing baseline information for the development of integrated management strategies encompassing population control, habitat restoration, eDNA-based long-term monitoring, and community-based cooperation.

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기사명 저자명 페이지 원문 목차
Comparison and directions for improvement of the ecological and natural map and the urban ecological map, the major systems of national environmental policy Wooseok Oh, Hye-Yeon Yoon, Jangsam Cho p. 149-156
Competitor, stress-tolerator, and ruderal strategies and functional traits of plant communities across coastal habitats in the Southwestern Coast of Korea Dong-Ho Son, Jong-Wook Kim, Jangsam Cho p. 157-163
Impact of forest management on grade changes in the ecological and natural map of Korea Wooseok Oh, Hye-Yeon Yoon, Jangsam Cho p. 164-169
Causes of Coreopsis basalis and Coreopsis lanceolata misidentification in Korea and species differentiation through genetic analysis Ki-Hyun Park, In Jung An p. 170-176
Halophyte adaptation under sea-level rise : a case study from Muan-Gun, South Korea Seok Yeoul Ko, Min Jae Kim, Jangsam Cho, Jong-Wook Kim p. 177-183
Selection of shell orientation for successful settlement in two different barnacle species on an artificial rocky intertidal zone of South Korea Ji Yeong Kim, Baek-Jun Kim p. 184-190
Effect of collection site and cone position on callus induction from immature embryos of Abies koreana Il Ryong Kim, Da Young Park, Da Young Lee, Hyeong Cheol Park p. 191-197
Analysis of changes in the important plant communities (Quercus mongolica, Quercus variabilis, Pinus densiflora) of the Korean Peninsula in the last 10 years, focusing on the ecological and nature map Ki-Hyun Park, Dong-Ho Son p. 198-207
Development of a multiplex polymerase chain reaction–capillary gel electrophoresis assay for detecting seven living modified canola events A-Mi Yoon, Da Som Park, Jeong Chan Moon, Wonkyun Choi p. 208-215
Diet composition of invasive sika deer (Cervus nippon) in Korean islands revealed by fecal DNA analysis Cheol-Young Kim, Ki-Beom Park, Ji-Eun-Bak, A-Ram Jo, Youngho Cho p. 216-224
Import status of ornamental Atyidae in the Republic of Korea Youngjun Park, Doyoung Chae, Mingyo Jeong p. 225-231
Misidentification in invasive alien species reports : clarifying the false report of Procambarus clarkii in Byeongcheon Stream, South Korea Soon Jae Eum, Youngho Cho, Ki Hyun Park, Youngjun Park p. 232-237
First report of a Saltwater Crocodile (Crocodylus porosus Schneider, 1801) discovered in Sacheon, Gyeongsangnam-Do, South Korea Hae-jun Baek, Jeongseop An, Beom-jun Jang, Min-ji Cha p. 238-242

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