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Lab Publications

Most of our publications can be downloaded from ResearchGate. Please feel free to contact me if you cannot find the paper(s) you need.

(*undergraduate, **graduate, or ***postdoctoral mentee/advisee)

Matthew Troia (Postdoc)
Charlotte Chang (NIMBioS postdoc)
Anchor 1


Giam X, Olden JD, Simberloff, D. 2018. Impact of coal mining on stream biodiversity in the US and its regulatory implications. Nature Sustainability 1: 176–183.

​Giam X, Olden JD. 2018. Drivers and interrelationships among multiple dimensions of rarity for freshwater fishes. Ecography 41: 331-344.

Olden, JD, Comte L, Giam X. 2018. The homogocene: A research prospectus for the study of biotic homogenisation. NeoBiota 37: 23-36.

Kao AB, Berdahl AM, Hartnett AT, Lutz MJ, Bak-Coleman JB, Ioannou CC, Giam X, Couzin ID 2018. Counteracting estimation bias and social influence to improve the wisdom of crowds. Journal of the Royal Society Interface 15: 20180130.

Chang CH***, Cruyff MJLF, Giam X. In Press. Examining conservation compliance with randomized response technique analyses. Conservation Biology. doi: 10.1111/cobi.13133

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


Giam X. 2017. Global biodiversity loss from tropical deforestation. Proceedings of the National Academy of Sciences USA 114: 5775-5777. [Invited Commentary]

Giam X, Chen W, Schriever TA, Van Driesche R, Muneepeerakul R, Lytle DA, Olden JD. 2017. Hydrology drives seasonal variation in dryland stream macroinvertebrate communities. Aquatic Sciences 79: 705-717.

Aziz SA, Clements GR, Giam X, Forget P-M, Campos-Arceiz A. 2017. Coexistence and Conflict between the Island Flying fox (Pteropus hypomelanus) and Humans on Tioman Island, Peninsular Malaysia. Human Ecology 45:377-389. [Corrigendum: Aziz SA et al. 2017. Human Ecology 45:391]

Chong KY, Raphael MB, Carrasco LR, Yee ATK, Giam X, Yap VB, Tan HTW. 2017. Reconstructing the invasion history of a spreading, non-native, tropical tree through a snapshot of current distribution, sizes, and growth rates. Plant Ecology 218: 673-685.


Giam X, Olden JD. 2016. Environment and predation govern fish community assembly in temperate streams. Global Ecology and Biogeography 25:1194-1205.

Giam X, *Mani L, Koh LP, Tan HTW. 2016. Saving tropical forests by knowing what we consume. Conservation Letters 9: 267-274.

Giam X, Olden JD. 2016. Quantifying variable importance in a multimodel inference framework. Methods in Ecology and Evolution 7: 388-397.

**Dala-Corte RB, Giam X, Olden JD, Becker FG, Guimaraes TDF, Melo AS. 2016. Revealing the pathways by which agricultural land-use affects stream fish communities in South Brazilian grasslands. Freshwater Biology 61: 1921-1934.

Chisholm RA, Giam X, Sadanandan KR, Fung T, Rheindt FE. 2016. A robust nonparametric method for quantifying undetected extinctions. Conservation Biology 30: 610-617.

Sekar N, Giam X, Sharma NP, Sukumar R. 2016. How much Dillenia indica seed predation occurs from Asian elephant dung? Acta Oecologica 70: 53-59.

Pellegrini AFA, Socolar JB, Elsen PR, Giam X. 2016. Trade-offs between savanna woody plant diversity and carbon storage in the Brazilian Cerrado. Global Change Biology 22:3373-3382.

Wijedasa LS, Jauhiainen J, Kononen M, Lampela M, Vasander H, Leblanc M-C, Evers S, Smith TEL, Yule CM, Varkkey H, et al. (incl. Giam X). 2016. Denial of long-term issues with agriculture on tropical peatlands will have devastating consequences. Global Change Biology 23: 977-982. [Letter to Editor]


Giam X, Hadiaty R, Tan HH, Parenti LR, Wowor D, Sauri S, Chong KY, Yeo DCJ, Wilcove D. 2015. Mitigating the impact of oil palm monoculture on freshwater fishes in Southeast Asia. Conservation Biology 29: 1357-1367.

Giam X, Olden JD. 2015. A new R2-based metric to shed greater insight on variable importance in artificial neural networks. Ecological Modelling 313: 307-313.

Burivalova Z, Lee TM, Giam X, Sekercioglu CH, Wilcove DS, Koh LP. 2015. Avian responses to selective logging shaped by species traits and logging practices. Proceedings of the Royal Society B-Biological Sciences 282: 20150164.

Green JMH, Sripanomyom S, Giam X, Wilcove DS. 2015. The ecology and economics of shorebird conservation in a tropical human-modified landscape. Journal of Applied Ecology 52: 1483-1491.

Hua F, Hu J, Liu Y, Giam X, Lee TM, Luo H, Wu J, Liang Q, Zhao J, Long X, Pang H, Wang B, Liang W, Zhang Z, Gao X, Zhu J. 2015. Community-wide changes in inter-taxonomic temporal co-occurrence resulting from phenological shifts. Global Change Biology 22: 1746-1754.

Harris JBC, Green JMH, Prawiradilaga DM, Giam X, Giyanto, Hikamatullah D, Putra CA, Wilcove DS. 2015. Using market data and expert opinion to identify overexploited species in the wild bird trade. Biological Conservation 187: 51-60.


Tedesco PA, Bigorne R, Bogan AE, Giam X, Jezequel C, Hugueny B. 2014. Estimating how many undescribed species have gone extinct. Conservation Biology 28: 1360-2370.


Yeo HHT, Chong KY, Yee ATK, Giam X, Corlett RT, Tan HTW. 2014. Leaf litter depth as an important factor inhibiting seedling establishment of an exotic palm in tropical secondary forest patches. Biological Invasions 16: 281-392.

Giam X, Koh LP, Wilcove DS. 2014. Tropical crops: cautious optimism. Science 346: 928. [Letter to Editor]


Wilcove DS, Giam X, Edwards DP, Fisher B, Koh LP. 2013. Navjot’s nightmare revisited: logging, agriculture, and biodiversity in Southeast Asia. Trends in Ecology and Evolution 28: 531-540.


Lim NT-L, Giam X, Brynes G, Clements GR. 2013. Occurrence of the Sunda colugo (Galeopterus variegatus) in the tropical forests of Singapore: A Bayesian approach. Mammalian Biology 78: 63-67.

Koh LP, Kettle CJ, Sheil D, Lee TM, Giam X, Gibson L, Clements GR. 2013. Biodiversity state and trends in Southeast Asia. In: Encyclopedia of Biodiversity, 2nd edition. Levin S (editor). pp 509–527. Elsevier Inc, ISBN: 978-0-12-384720-1.


Giam X, Koh LP, Tan HH, Miettinen J, Tan HTW, Ng PKL. 2012. Global extinctions of freshwater fishes follow peatland conversion in Sundaland. Frontiers in Ecology and the Environment 10: 465-470.

Giam X, Scheffers BR, Sodhi NS, Wilcove DS, Ceballos G, Ehrlich PR. 2012. Reservoir of richness: least disturbed tropical forests are centres of undescribed species diversity. Proceedings of the Royal Society B-Biological Sciences 279: 67-76. [Corrigendum: Giam X et al. 2013. Proceedings of the Royal Society B-Biological Sciences 280: 20130879]


Giam X, Wilcove DS. 2012. The geography of conservation ecology research in Southeast Asia: current biases and future opportunities. The Raffles Bulletin of Zoology Supplement 25: 29-36.


Jaafar Z, Giam X. 2012. Misinformation and omission in science journalism. Tropical Conservation Science 5: 142-149.


Giam X, Ng TH, Lok AFSL, Ng HH. 2011. Local geographic range predicts freshwater fish extinctions in Singapore. Journal of Applied Ecology 48: 356-363.


Giam X, Clements GR, Aziz SA, Chong KY, Miettinen J. 2011. Rethinking the ‘back to wilderness’ concept for Sundaland’s forests. Biological Conservation 144: 3149-3152.


Fisher BP, Edwards D, Giam X, Wilcove DS. 2011. The high costs of conserving Southeast Asia’s lowland rainforests. Frontiers in Ecology and the Environment 9: 329-334.


Scheffers BR, Yong DL, Harris JBC, Giam X, Sodhi NS. 2011. The world's rediscovered species: back from the brink? PLoS ONE 6:e22531.

Edwards DP, Fisher B, Giam X, Wilcove DS. 2011. Underestimating the costs of conservation in Southeast Asia. Frontiers in Ecology and the Environment 9: 544-545. [Letter to Editor]


Giam X, Sodhi NS, Brook BW, Tan HTW, Bradshaw CJA. 2010. Relative need for conservation assessments of plant species among ecoregions. Journal of Biogeography 38: 55-68.


Giam X, Bradshaw CJA, Tan HTW, Sodhi NS. 2010. Future habitat loss and the conservation of plant biodiversity. Biological Conservation 143: 1594-1602.


Giam X, Ng TH, Yap VB, Tan HTW. 2010. The extent of undiscovered species in Southeast Asia. Biodiversity and Conservation 19: 943–954.


Bradshaw CJA, Giam X, Sodhi NS. 2010. Evaluating the relative environmental impact of countries. PLoS ONE 5: e10440.

Giam X. 2010. Wind energy and bats in China. Frontiers in Ecology and the Environment 8: 179-180. [Letter to Editor]


Clements GR, Giam X, Laurence WF. 2010. Will India’s mega-census leave a mega-footprint? Current Science 99: 556. [Letter to Editor]


Bradshaw CJA, Giam X, Tan HTW, Brook BW, Sodhi NS. 2008. Threat or invasive status in legumes is related to opposite extremes of the same ecological and life-history attributes. Journal of Ecology 96: 869-883.


Lok AFSL, Tan K-x, Giam X, Ng TP, Tan HTW. 2008. The spread of Jacaranda obtusifolia Humb. & Bonpl. (Bignoniaceae) into the Central Catchment Nature Research, Singapore. Nature in Singapore 1: 143-147.

Chua S, Giam X, Yeo CK, Tan HTW. 2008. Attitudes towards biological conservation of one class of National University of Singapore undergraduate students. Nature in Singapore 1: 9-20.

Tan HTW, Giam X. 2008. Plant Magic: Auspicious and Inauspicious Plants from around the World. Marshall Cavendish Editions, Singapore.

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Latest Publications


Xingli's commentary on John Alroy's paper, which estimates biodiversity losses from tropical deforestation, out now in PNAS.

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We are looking for enthusiastic, creative, motivated, and hardworking graduate students (MS and PhD) and undergraduate students to join us.

Our lab is inclusive, welcoming, and committed to advancing diversity; we welcome everyone regardless of their ethnicity, color, socioeconomic background, gender identity, sexual orientation, religion, and age. We especially encourage members of historically underrepresented groups including (but not limited to) people of color, women, veterans, and people from socioeconomically disadvantaged communities to inquire about  opportunities.

Visit our Join Us! page or contact me at to find out more.

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