Population Ecology

, Volume 55, Issue 1, pp 159–172

Comparison of genetic diversity in the two arctic–alpine plants Diapensia lapponica var. obovata (Diapensiaceae) and Empetrum nigrum var. japonicum (Empetraceae) between Sakhalin in Russian Far East and Jeju Island in Korea, the southernmost edge of their distribution range

  • Mi Yoon Chung
  • Jordi López-Pujol
  • Myung-Ok Moon
  • Jae Min Chung
  • Chan Soo Kim
  • Byung-Yun Sun
  • Ki-Joong Kim
  • Myong Gi Chung
Original article

DOI: 10.1007/s10144-012-0348-z

Cite this article as:
Chung, M.Y., López-Pujol, J., Moon, MO. et al. Popul Ecol (2013) 55: 159. doi:10.1007/s10144-012-0348-z

Abstract

We compared allozyme variation in the two arctic–alpine plants Diapensia lapponica var. obovata and Empetrum nigrum var. japonicum between Sakhalin Island in Russian Far East, within their range core, and the Korean island of Jeju, their world’s southernmost distribution. For D. lapponica var. obovata, Sakhalin populations harbored moderate levels of within-population genetic variation and low among-population divergence, whereas extremely low levels of within-population genetic diversity and high among-population differentiation were found in Jeju Island populations. In contrast, we found moderate levels of within-population variation and low among-population differentiation in E. nigrum var. japonicum in both northern populations (those of Sakhalin and an additional population from northern Japan) and Jeju Island populations. Under a similar scenario of immigration history of arctic–alpine plants on Jeju Island during the glacial periods of the Pleistocene and local persistence through glacial/interglacial cycles, the contrasting genetic structure between D. lapponica var. obovata and E. nigrum var. japonicum is mainly attributable to their different life-history, ecological, and demographic traits: (1) hermaphroditic versus monoecious, dioecious or polygamous, (2) seeds with no adaptations for long-distance dispersal versus berry-like drupes dispersed by animals and birds, and (3) a very small patch near the peak of Mt. Halla with a few hundred individuals versus a relatively continuous distribution around the peak of Mt. Halla with numerous individuals. From a conservation perspective, in situ and ex situ conservation measures should be strengthened for D. lapponica var. obovata on Jeju Island given their extreme rarity there.

Keywords

AllozymesConservationDemographyEcological traitsGenetic diversityLife-history traits

Copyright information

© The Society of Population Ecology and Springer Japan 2012

Authors and Affiliations

  • Mi Yoon Chung
    • 1
  • Jordi López-Pujol
    • 2
  • Myung-Ok Moon
    • 3
  • Jae Min Chung
    • 4
  • Chan Soo Kim
    • 5
  • Byung-Yun Sun
    • 6
  • Ki-Joong Kim
    • 7
  • Myong Gi Chung
    • 1
  1. 1.Department of Biology and the Research Institute of Natural ScienceGyeongsang National UniversityJinjuRepublic of Korea
  2. 2.BioC-GReB, Laboratori de Botànica, Facultat de FarmàciaUniversitat de BarcelonaBarcelonaSpain
  3. 3.Department of BiologyJeju National UniversityJejuRepublic of Korea
  4. 4.Department of Plant Resources ConservationKorea National ArboretumPocheonRepublic of Korea
  5. 5.Warm-temperate Forest Research CenterKorea Forest Research InstituteJejuRepublic of Korea
  6. 6.Faculty of Biological SciencesChonbuk National UniversityChonjuRepublic of Korea
  7. 7.School of Life SciencesKorea UniversitySeoulRepublic of Korea