We analyzed research topics, temporal distribution of field sites, and researcher network of 1,508 limnology publications in the Korean Journal of Limnology (1968~2012) and the Korean Journal of Ecology and Environment (2013~2017). We found that water quality and sediment, phytoplankton, invertebrates, and fish were major subjects during the study periods. Survey of flora and fauna and physiological experiment of freshwater species were the largest subjects during 1970~80s, while other subjects including production, behavior, modeling, and ecological assessment have been rapidly increased since the 1990s. Most of the biological taxa equally studied lotic and lentic system, however, invertebrates and fish related studies more focused on the lotic system. Spatially, the field site of Korean limnology studies was found to be concentrated in main river channels runs through urban areas and artificial lakes than preserved natural areas. Freshwater system, located at the elevation range of 301~400m(upstream of main channels), had the lowest number of field sites. Collaboration among researchers and different institution types have been steadily increased and expanded as the number of publications increased.

Abstract
 서 론
 재료 및 방 법
 결 과
  1. 한국 육수학 연구 주제 변화
  2. 육수학 야외 연구지의 공간적 분포
  3. 연구자 네트워크
 고 찰
 적 요
 REFERENCES

• 김지윤(부산대학교 자연과학대학 생명과학과, 동방대학교 이학부 생명권환경과학과) | Kim, Ji Yoon (Department of Biological Sciences, Pusan National University, Department of Environmental Science, Toho University)
• 주기재(부산대학교 자연과학대학 생명과학과) | Gea-Jae Joo (Department of Biological Sciences, Pusan National University)
• 도윤호(공주대학교 자연과학대학 생명과학과) | Yuno Do (Department of Biological Science, Kongju National University) Corresponding author