Associate Professor

Contact Information:

Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543
Lee Kong Chian Natural History Museum, National University of Singapore, 2 Conservatory Drive, Singapore 117377

Deputy Head, Lee Kong Chian Natural History Museum (LKCNHM)
Research Affiliate, Tropical Marine Science Institute (TMSI)

Freshwater and Invasion Biology Lab

Lee Kong Chian Natural History Museum

6516 2709
dbsyeod@nus.edu.sg, nhmyeod@nus.edu.sg

Academic Qualifications

PhD NUS, BSc (Hons) NUS

Teaching Areas

LSM3254 – Ecology of Aquatic Environments
LSM4264 – Freshwater Biology
LSM4257 – Aquatic Vertebrate Diversity
BL5230    – Biological Invasions

LSM1103 – Biodiversity
LSM2251 – Ecology and the Environment
LSM3251 – Ecology and the Environmental Processes
LSM3261 – Life Form and Function
LSM4261 – Marine Biology
LSM4263 – Field Studies in Biodiversity
LSM4266 – Aquatic Biodiversity

Research Areas

Research goals in fundamental and translational (used here in the broad sense of applying basic research to human/societal benefit) research in the following areas associated with fresh waters:

    • Freshwater biodiversity and ecology
    • Aquatic invasions
    • Freshwater decapod crustaceans


Current projects

Projects (together with students, staff, and collaborators) include biodiversity surveys and ecological studies of Singapore’s freshwater fauna such as plankton, invertebrates, and fishes; ecological studies of aquatic alien species in Singapore and tropical Asia; and systematics and taxonomy, and conservation of freshwater crabs and other decapod crustaceans.

  1. Freshwater biodiversity and ecology – Ongoing work focuses on diversity, ecology in tropical Asian fresh waters, with emphasis on Singapore’s streams and reservoirs, including functional diversity, biodiversity responses to environmental variables; food web and trophic interactions; and conservation, management and habitat restoration/rehabilitation.

  2. Aquatic (mostly freshwater) invasions – Investigating invasiveness, ecology, and impacts of aquatic alien species, e.g., competitive interactions between introduced and native species. Introduced species currently/recently studied include the golden apple snail (Pomacea canaliculata), redclaw crayfish (Cherax quadricarinatus), marbled gudgeon (Oxyeleotris marmorata), Midas (Amphilophus citrinellus) and Mayan (Cichlasoma uropthalmus) cichlids, and African sharptooth catfish (Clarias gariepinus).

  3. Freshwater crabs – Work includes systematic and taxonomic studies of Asian freshwater crabs; global IUCN Red List conservation assessments; and ecological and conservation studies of threatened species, e.g., the critically endangered Singapore freshwater crab (Johora singaporensis).

Editorial Activities


    • Associate Editor, Aquatic Invasions (2013–present)
    • Associate Editor, BioInvasions Records (2013–present)
    • Associate Editor, Diversity and Distributions (2019–present)
    • Editorial Board, Freshwater Biology (2018–present)
    • Associate Editor, Journal of Crustacean Biology (2017–present)
    • Associate Editor, Journal of Natural History (2017–present)
    • Associate Editor, Raffles Bulletin of Zoology (2002–present)



    • International Advisory Board, Crustacean Research(2015–2017)
    • Editorial Board, COSMOS (Journal of the Singapore National Academy of Sciences) (2010–2012)
    • Managing Editor, Raffles Bulletin of Zoology (2002–2004)
    • Editor, Singapore Institute of Biology Bulletin (2003–2007)


Selected Recent Journal Articles

For other publications, please see:
Google Scholar
Research Gate

Freshwater biodiversity and ecology

  1. Chua KWJ, Tan HH, Yeo DCJ (2019) Loss of endemic fish species drives impacts on functional richness, redundancy and vulnerability in freshwater ecoregions of Sundaland. Biological Conservation, 234: 72–81.

  2. Clews E, Corlett RT, Ho JKI, Kim DE, Koh CY, Liong SY, Meier R, Memory A, Ramchunder SJ, Sin TM, Siow HJMP, Sun Y, Tan HH, Tan SY, Tan HTW, Theng MTY, Wasson RJ, Yeo DCJ, Ziegler AD (2018) The biological, ecological and conservation significance of freshwater swamp forest in Singapore. Gardens’ Bulletin Singapore 70 (Suppl. 1): 9–32.

  3. Ho JKI, Quek RF, Ramchunder SJ, Memory A, Theng MTY, Yeo DCJ, Clews E (2018) Aquatic macroinvertebrate richness, abundance and distribution in the Nee Soon freshwater swamp forest, Singapore. Gardens’ Bulletin Singapore 70 (Suppl. 1): 71–108.

  4. Li T, Loh YX, Lim W, Nyanasengeran M, Low BW, Tan HH, Yeo DCJ, Cai Y (2019) The fish fauna of Bukit Timah Nature Reserve, Singapore. Gardens’ Bulletin Singapore 71 (Suppl. 1): 557–573.

  5. Liew JH, Chua KWJ, Arsenault ER, Thorp JH, Suvarnaraksha A, Amirrudin A, Yeo DCJ (2019) Quantifying terrestrial carbon in freshwater food webs using amino acid isotope analysis: Case study with an endemic cavefish. Methods in Ecology and Evolution 2019;0 0:1–12. DOI: 10.1111/2041-210X.13230.

  6. Liew JH, Giam X, Clews E, Tan KYW, Tan HH, Kho ZY, Yeo DCJ (2018) Contrasting changes in freshwater fish assemblages and food webs follow modification of tropical waterways. Ecology of Freshwater Fish. DOI: 10.1111/eff.12419 2017.

  7. Liew JH, Jardine T, Lim RBH, Kwik JTB, Tan HH, Kho ZY, Yeo DCJ (2018) Bottom-up influences on freshwater food webs support the ‘environmental filtering’ hypothesis. Limnology and Oceanography. DOI: 10.1002/lno.10813

  8. Lim RBH, Liew JH, Kwik JTB, Yeo DCJ (2018) Predicting food web responses to biomanipulation using Bayesian Belief Network: Assessment of accuracy and applicability using in-situ exclosure experiments. Ecological Modelling 384: 308–315.

  9. Mowe MAD, Song Y, Sim DZH, Lu J, Mitrovic SM, Tan TW, Yeo DCJ (2019) Comparative study of six emergent macrophyte species for controlling cyanobacterial blooms in a tropical reservoir. Ecological engineering 129 (2019): 11–21.

  10. Ng TH, Tan SK, Ahmad A, Do VT, Joshi RC, Wang WY, Tan HH, Yeo DCJ (2018) Not in the Least Concern: anthropogenic influences on a Southeast Asian apple snail Pila scutata (Ampullariidae). Oryx, 53(2):230–238.

  11. Song Y, Liew JH, Sim DZH, Mowe MAD, Mitrovic S, Tan HTW; Yeo DCJ (2018) Effects of macrophytes on lake-water quality across latitudes: a meta-analysis. Oikos, 128: 468-481.

  12. Song Y, Mowe MAD, Mitrovic SM, Tan HTW, Yeo DCJ (2019) An ex-situ mesocosm study of emergent macrophytes effects on phytoplankton communities. Fundamental and Applied Limnology, 192(3): 225–235.

  13. Tay YC, Ng DJJ, Loo JB, Huang D, Cai Y, Yeo DCJ, Meier R (2018) Roads to isolation: similar genomic history patterns in two freshwater crab species of contrasting environmental tolerances and range sizes. Ecology and Evolution 8(9): 4657–4668.

  14. Wilkinson C, Yeo DCJ, Tan HH, Hadi Fikir A, Ewers R (2019) Resilience of tropical freshwater fish (Nematabramis everetti) populations to severe drought over a land-use gradient in Borneo. Environmental Research Letters, 14: 045008.

  15. Wilkinson CL, Yeo DCJ, Tan HH, Fikri AH, Ewers RM (2018) Land use change leads to significant loss of freshwater fish species and functional richness in Sabah, Malaysia. Biological Conservation 222: 164–171.

  16. Wilkinson CL, Yeo DCJ, Tan HH, Fikri AH, Ewers RM (2018) The availability of freshwater fish resources is maintained across a land-use gradient in Sabah, Borneo. Aquatic Conservation: Marine and Freshwater Ecosystems, 28(5): 1044–1054.


Aquatic invasions

  1. Ho JKI, Ramchunder SJ, Memory A, Tan HH, Yeo DCJ (2019) Native and introduced fish community structure in a freshwater swamp forest: implications for conservation and management. Aquatic Conservation: Marine and Freshwater Ecosystems, 29(1): 47–58.

  2. Tan  WT, Loke LHL, Yeo DCJ, Tan SK, Todd PA (2018) Do Singapore’s seawalls host non-native marine molluscs? Aquatic Invasions, 13: 365–378.

  3. Vilizzi L, Copp GH, Adamovich B, Almeida D, Chan J, Davison PI, Dembski S, Ekmekçi FG, Ferincz A, Forneck SC, Hill JE, Kim J-E, Koutsikos N, Leuven RSEW, Luna SA, Magalhães F, Marr SM, Mendoza R, Mourão CF, Neal JW, Onikura N, Perdikaris C, Piria M, Poulet N, Puntila R, Range IL, Simonović P, Ribeiro F, Tarkan AS, Troca DFA, Vardakas L, Verreycken H, Vintsek L,Weyl OLF, Yeo DCJ, Zeng Y (2019) A global review and meta-analysis of applications of the freshwater Fish Invasiveness Screening Kit. Reviews in Fish Biology and Fisheries (2019). https://doi.org/10.1007/s11160-019-09562-2

  4. Wells FE, Tan KS, Todd PA, Jaafar Z, Yeo DCJ (2019) A low number of invasive marine species in the tropics: A case study from Singapore. Management of Biological Invasions, 10(1): 23–45.

  5. Zeng Y, Shakir KK, Yeo DCJ (2019) Competition between a native freshwater crab and an invasive crayfish in tropical Southeast Asia. Biological Invasions, 21(8): 2653–2663.

  6. Zeng Y, Yeo DCJ (2018) Assessing the aggregated risk of invasive crayfish and climate change to freshwater crabs: a Southeast Asian case study. Biological Conservation 223: 58–67.

Freshwater decapod crustaceans

  1. Khoo MDY, Tiong NJL, Li T, Lim W, Ng DJJ, Nyanasengeran M, Yeo DCJ, Cai Y (2019) The freshwater decapod crustaceans of Bukit Timah Nature Reserve, Singapore. Gardens’ Bulletin Singapore 71 (Suppl. 1): 575–581.
  2. Pati SK, Mitra S, Yeo DCJ (2019) A new species of Acanthopotamon Kemp, 1918 (Decapoda: Brachyura: Potamidae: Potaminae) from northeastern India, with a key to the species of the genus and notes on their distribution in relation to freshwater ecoregions. Journal of Crustacean Biology (2018) 1–9. doi:10.1093/jcbiol/ruz040.


Selected recent book/book chapters/editorships

For other publications, please see:
Google Scholar
Research Gate

Freshwater biodiversity and ecology

  1. Klaus S, Ng NK, Pati SK, Naruse T, Brandis D, Rogers DC, Yeo DCJ (2019) Chapter 16.6. Decapoda. In: Rogers DC, Thorp JH (eds.), Keys to Palaearctic Fauna; Thorp and Covich’s Freshwater Invertebrates – Volume IV. Academic Press. Pp. 845–866.

  2. Ow YX, Chua SC, Friess D, Lai S, Lee AC, Liew JH, Ng LCS, Ooi SK, Sew G, Tan S, Tay SHX, Tay YC, Toh TC, Yaakub SM, Yeo DCJ (2018) Chapter 1. Ecosystems, habitat connectivity & sustainable development. In: Jaafar Z, Huang D, Tanzil JTI, Ow YX, Yap N (eds.) The Singapore Blue Plan 2018. The Singapore Institute of Biology. Pp. 23–51.

Aquatic invasions

  1. Ng TH, Tan SK, Yeo DCJ (2017) South American apple snails, Pomacea spp. (Ampullariidae), in Singapore. In: Joshi RC, Cowie RH, Sebastian LS (2017) Biology and management of invasive apple snails. Philippine Rice Research Institute (PhilRice), Maligaya, Science City of Muñoz, Nueva Ecija 3119. Pp. 221–239.


Updated 19 August 2019