Biodiversity Research Center, Academia Sinica

Dr. Chih-Yu Chiu Research Fellow

Lab PI

Dr. Chih-Yu Chiu

Research Fellow

Ph.D.—National Tsukuba University,
Tsukuba, Japan,1988

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Office: Greenhouse Builiding 206



Research Fields
  • Soil biochemistry
  • Microbiology
  • Lake metabolism

Research Directions

  • 1.Soil bacterial communities in forests
    Differences in the soil bacterial community caused by forest management practices were characterized using 16S ribosomal RNA gene clone libraries. The disturbance of forest harvesting and tree species conversion influence the composition of bacterial community between natural and disturbed forests and increase the diversity of the disturbed forest soil community.
  • 2.Characteristics of humic substances in forest soils
    We investigated soil organic matter in different types of forests. Humic substances were characterized by use of solid-state 13C-NMR spectroscopy. Relatively low degree of humification in soils of the perhumid cypress forest was due to high precipitation and acidity.
  • 3.Lake metabolism
    We used high-frequency in situ dissolved oxygen measurements to investigate the seasonal variability and factors regulating metabolism subalpine lakes in Taiwan. Gross primary production (GPP) and ecosystem respiration both peaked in early summer and mid-autumn but dropped during the typhoon season and winter. Ecosystem respiration was more resistant to external disturbances than GPP and showed strong daily variation during typhoon seasons. Seasonal winter mixing and typhoon-induced water mixing in summer and autumn play a key role in determining the extent to which the lake is a seasonal carbon sink or source to the atmosphere.


Latest published paper

期刊論文 ( 2016 - 2021 )

  1. Chang, E.H., Tsai, I.J., Jien, S.H., Tian, G., Chiu, C.Y.*, 2020, “Biogeographic Changes in Forest Soil Microbial Communities of Offshore Islands—A Case Study of Remote Islands in Taiwan”, Forests, 12(1) 4. (SCIE) (IF: 2.221; SCIE ranking: 46.2%,84.8%) Link
  2. Xu, W., Whitman, B.W., Gundale, M J., Chien, C.C., Chiu, C.Y.*, 2020, “Functional response of the soil microbial community to biochar applications”, GCB Bioenergy, 13, 269–281. (SCIE) (IF: 5.316; SCIE ranking: 23.2%,1.1%) Link
  3. Shiau, Y.J., Chang, E.H., Tian, G., Chen, T.H., and Chiu, C.Y.*, 2020, “Improvements in soil C and N compositions after 40 and 80 years of reforestation in subtropical low mountain forests.”, Journal of Geophysical Research – Biogeosciences,
  4. Shiau, Y.J., Lin, C.W., Cai, Y., Jia, Z., Lin, Y.T., and Chiu, C.Y.*, 2020, “Niche differentiation of active methane-oxidizing bacteria in estuarine mangrove forest soils in Taiwan.”, Microorganisms, 8, 1248. (SCIE) (IF: 4.152; SCIE ranking: 46.2%,84.8%) Link
  5. Yam, R.S.W. , Fan, Y.T., Tan, Z., Wang, T.D. and Chiu, C.Y., 2020, “Assessing impacts of metallic contamination along the tidal gradient of a riverine mangrove: multi-metal bioaccumulation and biomagnification of filter-feeding bivalves”, Forests, 11, 504. (SCIE) (IF: 2.221; SCIE ranking: 46.2%,84.8%) Link
  6. Chiu, C.Y., Jones, J.R., Rusak, J.A., Lin, H.C, Nakayama, K., Kratz, T.K., Liu, W.C., Tang, S.L., and Tsai, J.W., 2020, “Terrestrial loads of dissolved organic matter drive inter-annual carbon flux in subtropical lakes during times of drought”, Science of the Total Environment, 717, 137052. (SCIE) (IF: 6.551; SCIE ranking: 8.3%) Link
  7. Shiau, Y.J. and Chiu, C.Y.*, 2020, “Biogeochemical processes of C and N in the soil of mangrove forest ecosystems”, Forests, 11, 492. (SCIE) (IF: 2.221; SCIE ranking: 46.2%,84.8%) Link
  8. Wang, H.C., Tian, G., Chen, C.P., Chang, E.H., Chou, C.Y., Chiou, C.R. and Chiu, C.Y.*, 2019, “Response of humic acids and soil organic matter to vegetation replacement in subtropical high mountain forests”, Journal of Geophysical Research-Biogeosciences, 124, 3727-3736. (SCIE) (IF: 3.408; SCIE ranking: 32.5%,20.5%)
  9. Chang, E.H., Tian, G., Shiau, Y.J., Chen, T.H., and Chiu, C.Y.*, 2019, “Influence of thorny bamboo plantations on soil microbial biomass and community structure in subtropical badland soils”, Forests, 10(10), 854. (SCIE) (IF: 2.221; SCIE ranking: 46.2%,84.8%) Link
  10. Lin, Y.T., Lin, Y.F., Tsai, I.J., Chang, E.H., Jien, S.H., Lin, Y.J., and Chiu, C.Y.*, 2019, “Structure and diversity of soil bacterial communities in offshore islands”, Scientific Reports, 9,4689. (SCIE) (IF: 3.998; SCIE ranking: 23.9%) Link
  11. Liu, W.C., Liu, H.M. and Chiu, C.Y., 2019, “Investigating suspended-sediment transport in a shallow lake using a three-dimensional hydrodynamic and sediment model”, Journal of Earth System Science, 128, 29. (SCIE) (IF: 1.423; SCIE ranking: 75.5%)
  12. Lin, C.W., Tian, G., Pai, C.W., and Chiu, C.Y.*, 2018, “Characterization of phosphorus in subtropical coastal sand dune forest soils”, Forests, 9(11), 710. (SCIE) (IF: 2.221; SCIE ranking: 46.2%,84.8%) Link
  13. Lin, Y.T., Whitman, W.B., Coleman, D.C., and Chiu, C.Y.*, 2018, “Effects of reforestation on the structure and diversity of bacterial communities in subtropical low mountain forest soils”, Frontiers in Microbiology, 9, 1968. (SCIE) (IF: 4.236; SCIE ranking: 25%) Link
  14. Lin, Y.T. Whitman, W.B., Coleman, D.C., Shiau, Y.J., Jien, S.H. and Chiu, C.Y.*, 2018, “The influences of thorny bamboo growth on the bacterial community in badland soils of southwestern Taiwan”, Land Degradation & Development, 29(8), 2728-2738. (SCIE) (IF: 3.775; SCIE ranking: 15.8%,28.3%) Link
  15. Shiau, Y.J., Pai, C.W., Tsai, J.W., Liu, W.C., Yam, R.S.W., Chang, S.C., Tang, S.L. and Chiu, C.Y.*, 2018, “Characterization of phosphorus in a toposequence of subtropical perhumid forest soils facing a subalpine lake”, Forests, 9(6), 294. (SCIE) (IF: 2.221; SCIE ranking: 46.2%,84.8%) Link
  16. Tandon, K., Yang, S.H., Wan, M.T., Yang, C.C. Baatar, B., Chiu, C.Y., Tsai, J.W., Liu, W.C. and Tang, S.L., 2018, “Bacterial community in water and air of two sub-alpine lakes in Taiwan.”, MICROBES AND ENVIRONMENTS, 33(2), 120-126. Link
  17. Shiau, Y.J., Cai, Y.F., Lin, Y.T., Jia, Z.J., Chiu, C.Y.*, 2018, “Community structure of active aerobic methanotrophs in red mangrove (Kandelia obovata) soils under different frequency of tides”, Microbial Ecology, 75(3), 761-770. (SCIE) (IF: 3.356; SCIE ranking: 25.4%,39%,9.3%) Link
  18. Chang, E.D., Chen, C.P., Tian, G., and Chiu, C.Y.*, 2018, “Replacement of natural hardwood forest with planted bamboo and cedar in a humid subtropical mountain affects soil microbial community”, Applied Soil Ecology, 124, 146-154. (SCIE) (IF: 3.187; SCIE ranking: 31.6%) Link
  19. Shiau, Y.J., Cai, Y., Jia, Z, Chen, C.L., and Chiu, C.Y.*, 2018, “Phylogenetically distinct methanotrophs modulate methane oxidation in rice paddies across Taiwan.”, Soil Biology & Biochemistry, 124, 59-69. (SCIE) (IF: 5.795; SCIE ranking: 2.6%) Link
  20. Chang, E.D., Tian, G., and Chiu, C.Y.*, 2017, “The effect of re-planting of trees on soil microbial communities in wildfire-induced subalpine grassland”, Forests, 8(10), 385. (SCIE) (IF: 2.221; SCIE ranking: 46.2%,84.8%) Link
  21. Shiau, Y.J., and Chiu, C.Y.*, 2017, “Changes in soil biochemical properties in a cedar plantation invaded by moso bamboo.”, Forests, 8, 222. (SCIE) (IF: 2.221; SCIE ranking: 46.2%,84.8%) Link
  22. Shiau, Y.J, Chen, J.S., Chung, T.L., Tian, G. and Chiu, C.Y.*, 2017, “13C NMR spectroscopy characterization of particle-size fractionated soil organic carbon in subalpine forest and grassland ecosystems”, Botanical Studies, 58, 23. (SCIE) (IF: 2.163; SCIE ranking: 46.2%,84.8%) Link
  23. Shiau, Y.-J., Lin, M-F., Tan, C.-C., Tian, G. and Chiu, C.-Y.*, 2017, “Assessing N2 fixation in estuarine mangrove soils”, ESTUARINE COASTAL AND SHELF SCIENCE, 189, 84-89. (SCIE) (IF: 2.333; SCIE ranking: 38.8%,22.4%) Link
  24. Lin, Y.T., Whitman, W.B., Coleman D.C., Jien, S.H. and Chiu, C.Y.*, 2017, “Cedar and bamboo plantations alter structure and diversity of the soil bacterial community from a hardwood forest in subtropical mountain”, Applied Soil Ecology, 112, 28-33. (SCIE) (IF: 3.187; SCIE ranking: 31.6%) Link
  25. Shiau, Y.-J., Wang, H.-C., Chen, T.-H., Jien, S.-H., Tian, G., and Chiu, C.-Y.*, 2017, “Improvement in the biochemical and chemical properties of badland soils by thorny bamboo”, Scientific Reports, 7, 40561. (SCIE) (IF: 3.998; SCIE ranking: 23.9%) Link
  26. Chang , E.-H., Tian, G. , and Chiu, C.-Y.*, 2017, “Soil microbial communities in natural and managed cloud montane forests”, Forests, 8(2), 33. (SCIE) (IF: 2.221; SCIE ranking: 46.2%,84.8%) Link
  27. Shiau, Y. J., Lee, S.C., Chen, T.H., Tian, G., and Chiu, C.Y. *, 2017, “Water salinity effects on growth and nitrogen assimilation rate of mangrove (Kandelia candel) seedlings. ”, Aquatic Botany, 137, 50-55. (SCIE) (IF: 1.71; SCIE ranking: 45.3%,39.3%) Link
  28. Kimura, N., Liu W.C., Tsai, J.W., Chiu, C.Y., Kratz, T.K. and Tai A., 2017, “Contribution of extreme meteorological forcing to vertical mixing in a small, shallow subtropical lake”, JOURNAL OF LIMNOLOGY, 76(1), 116-128. (SCIE) (IF: 1.267; SCIE ranking: 68.2%) Link
  29. Lin, Y,T., Jia, Z., Wang, D., Chiu, C.Y.*, 2017, “Effects of temperature on the composition and diversity of bacterial communities in bamboo soils at different elevations”, Biogeosciences, 14(21), 4879-4889. (SCIE) (IF: 3.48; SCIE ranking: 20%,22.5%) Link
  30. Chang, E.H., Chen, T.H., Tian, G., Hsu, C.K., and Chiu, C.Y.* , 2016, “Effect of 40 and 80 years of conifer regrowth on soil microbial activities and community structure in subtropical low mountain forests”, Forests, 7(10), 244. (SCIE) (IF: 2.221; SCIE ranking: 46.2%,84.8%) Link
  31. Wang. H.C., Chou, C.Y., Chiou, C.R., Tian, G, and Chiu, C.Y.*, 2016, “Humic acid composition and characteristics of soil organic matter in relation to the elevation gradient of moso bamboo plantations ”, PLoS ONE, 11(9), e0162193. (SCIE) (IF: 2.74; SCIE ranking: 38%) Link
  32. Lin, Y.T. and Chiu, C.Y.* , 2016, “Elevation gradient of soil bacterial communities in bamboo plantations.”, Botanical Studies, 57, 8. (SCIE) (IF: 2.163; SCIE ranking: 46.2%,84.8%) Link
  33. Jien, S.H., Baillie, I, Hu, C.C., Chen, T.H., Iizuka, Y., and Chiu, C.Y.* , 2016, “Forms and distribution of phosphorus in a placic podzolic toposequence in a subtropical subalpine forest, Taiwan. ”, Catena, 140, 145-154. (SCIE) (IF: 4.333; SCIE ranking: 10.5%,13.2%,8.5%) Link
  34. Tsai, J.W., Kratz, T.K., Rusak, J.A., Shih, W.Y., Liu, W.C., Tang, S.L., and Chiu, C.Y.*, 2016, “Absence of winter and spring monsoons cause water level changes and rapid shifts in metabolism in a subtropical lake.”, Inland Waters, 6(3), 436-448. (SCIE) (IF: 1.516; SCIE ranking: 45.5%,46.7%) Link
  35. Shiau, Y.J., Dham, V., Tian, G. and Chiu, C.Y.*, 2016, “Factors influencing removal of sewage nitrogen through denitrification in mangrove soils.”, Wetlands, 36, 621-630. (SCIE) (IF: 1.783; SCIE ranking: 59.2%,67.9%) Link
  36. Jien, S.H., Baillie, I, Huang, W.S., Chen, Y.Y. and Chiu, C.Y. *, 2016, “Incipient ferralization and weathering indices along a soil chronosequence in Taiwan ”, European Journal of Soil Science, 67, 583-596. (SCIE) (IF: 3.742; SCIE ranking: 21.1%) Link
  37. Wang, H.C., Tian, G., and Chiu, C.Y.* , 2016, “Invasion of moso bamboo into a Japanese cedar plantation affects the chemical composition and humification of soil organic matter. ”, Scientific Reports, 6, 32211. (SCIE) (IF: 3.998; SCIE ranking: 23.9%) Link
  38. Chang, E.H, Chen, T.H., Tian, G and Chiu, C.Y.* , 2016, “The effect of altitudinal gradient on soil microbial community activity and structure in moso bamboo plantations. ”, Applied Soil Ecology, 98, 213-220. (SCIE) (IF: 3.187; SCIE ranking: 31.6%) Link