Journal of the Korean Society of Environmental Restoration Technology (한국환경복원기술학회지)

The Korea Society of Environmental Restoration Technology (한국환경복원기술학회)
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Variations in Ecological Niche of Quercus variabilis and Quercus acutissima Leaf Morphological Characters in Response to Moisture and Nutrient Gradient Treatments under Climate Change Conditions

기후변화 조건에서 수분구배 및 영양소 구배에 따른 굴참나무와 상수리나무 잎 형태적 특성의 생태지위 변화

  • Park, Yeo-Bin (Department of Life Science, Kongju National University) ;
  • Kim, Eui-Joo (Department of Life Science, Kongju National University) ;
  • Park, Jae-Hoon (Department of Life Science, Kongju National University) ;
  • Kim, Yoon-Seo (Department of Life Science, Kongju National University) ;
  • Park, Ji-Won (Department of Life Science, Kongju National University) ;
  • Lee, Jung-Min (Department of Life Science, Kongju National University) ;
  • You, Young-Han (Department of Life Science, Kongju National University)
  • 박여빈 (국립공주대학교 생명과학과) ;
  • 김의주 (국립공주대학교 생명과학과) ;
  • 박재훈 (국립공주대학교 생명과학과) ;
  • 김윤서 (국립공주대학교 생명과학과) ;
  • 박지원 (국립공주대학교 생명과학과) ;
  • 이정민 (국립공주대학교 생명과학과) ;
  • 유영한 (국립공주대학교 생명과학과)
  • Received : 2024.02.01
  • Accepted : 2024.03.04
  • Published : 2024.04.30
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Abstract

This study attempted to elucidate the ecological niches and influencing environmental factors of Quercus variabilis and Quercus acutissima, which are representative deciduous broad-leaved trees in Korean forests, taxonomically close and genetically similar, under climate change conditions. Under climate change conditions induced by increased CO2 and temperature, soil moisture and nutrient environments were manipulated in four gradients. At the end of the growing, plants were harvested to measure growth responses, calculate ecological niches, and compare them with those of the control. Eperimental plants were grown for 180 days in a glass greenhouse designed with four gradients each for soil moisture and nutrient environments under climate change conditions induced by increased CO2 and temperature. After harvesting, growth responses of leaf traits were measured, ecological niches were calculated, and these were compared with those of the control groups. Furthermore, the responses of the two species' populations were interpreted using principal component analysis(PCA) based on leaf trait measurements. As a result, under climate change conditions, the ecological niche breadth for moisture environment was broader for Quercus variabilis than Quercus acutissima, whereas for the nutrient environment, Quercus acutissima exhibited a broader niche breadth than Quercus variabilis. And the rate of change in ecological niche breadth due to climate change decreased for Quercus variabilis in both moisture and nutrient environments, while for Quercus acutissima, it increased in the moisture environment but decreased in the nutrient environment. Additionally, in terms of group responses, both Quercus variabilis and Quercus acutissima expanded their ecological niches under climate change conditions in both soil moisture and nutrient conditions, with Quercus acutissima exhibiting a broader niche than Quercus variabilis under nutrient conditions. These results indicate that the changes in leaf morphological characteristics and the responses of individuals reflecting them vary not only under climate change conditions but also depending on environmental factors.

Keywords

Acknowledgement

본 연구는 환경부의 재원으로 한국환경산업기술원의 습지생태계 가치평가 및 탄소흡수 가치증진 기술개발사업의 지원을 받아 수행되었음(2022003630003).

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