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Home Range and Daily Activity of Nutria (Myocastor coypus) Using Radio Tracking in South Korea

  • Journal of Environmental Impact Assessment
  • Abbr : J EIA
  • 2020, 29(3), pp.182-197
  • Publisher : Korean Society Of Environmental Impact Assessment
  • Research Area : Engineering > Environmental Engineering
  • Received : April 13, 2020
  • Accepted : June 9, 2020
  • Published : June 30, 2020

Areum Kim 1 Young-Chae Kim 1 Do-Hun Lee 1

1국립생태원

Accredited

ABSTRACT

This study investigated the home range and characteristics of activities to contribute to the improvement of management techniques and the successful promotion of management policies of invasive nutria, which is a representative invasive species of South Korea. Six individuals were captivated for the study. Remote radio tracking on three of them was carried out followed by the analysis of the results. The average home range of the follow-up individuals were confirmed to be 0.043 km2 at MCP 95%, 0.085 km2 at K 95%. It was 0.018 km2 at K 50%, which is the core space. In 95% MCP, males exhibited the home range with 0.058 km2, showed wider home range 0.046 km2 than females who showed 0.012 km2, and showed a wider home range 0.015 km2 more at night than during the day. As a result of comparing the results of this study with the case studies of overseas studies, it is determined that the magnitude of the derived home range is the result of a stable habitat in which the procurement of food resources is smooth and human interference is limited. The daily moved distance of males was larger than that of females, with a maximum moved distance of 1,278m per day. Activity at the study site is high from around sunset to around 6 A.M., 10 P.M., 7 P.M., 1A.M., and 5 A.M., and high around sunrise and low during the daytime such as 2 P.M., which reflected the propensity of nocturnal animals to act. The results of this study on the home range and activity in nutria can be used as useful data for improving the management of invasive alien species for the installation and operation of traps, the spatial setting of controlled areas, and the calculation of the amount of resources together with a basic understanding of nutria’s behaviors in South Korea.

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