1. Tariq, F.S., A.W. Samsuri, D.S. Karam, A.Z. Aris and G. Jamilu, 2019. Bioavailability and mobility of arsenic, cadmium and manganese in gold mine tailings amended with rice husk ash and Fe-coated rice husk ash. Environ. Monit. Assess., Vol. 191. 10.1007/s10661-019-7359-6.
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2. Smith, H.G., D.S. Karam and A.T. Lennard, 2018. Evaluating tracer selection for catchment sediment fingerprinting. J. Soils Sedim., 18: 3005-3019.
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3. Fahmi, A.H., A.W. Samsuri, H. Jol and D. Singh, 2018. Bioavailability and leaching of Cd and Pb from contaminated soil amended with different sizes of biochar. R. Soc. Open Sci., Vol. 5. 10.1098/rsos.181328.
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4. Amirruddin, A.D., F.M. Muharam and D.S. Karam, 2018. Evaluation of ground-level and space-borne sensor as tools in monitoring nitrogen nutrition status in immature and mature oil palm. J. Plant Nutr., 41: 371-383.
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5. Abidin, N., D. Zulperi, S.I. Ismail, M.T. Yusof, N.W. Ismail- Suhaimy, D.S. Karam and M. Hakiman, 2018. Diagnostic approach and genetic diversity of jackfruit bronzing bacterium in Malaysia. Asian J. Plant Pathol., 12: 46-55.
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6. Zulperi, D., N. Manaf, S.I. Ismail, D.S. Karam and M.T. Yusof, 2017. First report of Pantoea stewartii subsp. stewartii causing fruit bronzing of jackfruit (Artocarpus heterophyllus), a new emerging disease in Peninsular Malaysia. Plant Dis., 101: 831-831.
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7. Rajoo, K.S., A. Ismail, D.S. Karam, S.Z. Zulkifli, H. Omar and A. Lim, 2017. Heavy metal bioaccumulation in soil arthropods at Malaysian sanitary landfill. J. Environ. Sci. Poll. Res., 3: 160-163.
8. Rajoo, K.S., A. Ismail, D.S. Karam, H. Omar, F.M. Muharam and D. Zulperi, 2017. Phytoremediation studies on arsenic contaminated soils in Malaysia. J. Adv. Chem. Sci., 3: 490-493.
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9. Keeren, S.R., A. Ismail, D.S. Karam, S. Zulkifli and H. Omar., 2017. Heavy metals bioaccumulation in soil athropods at Malaysian sanitary landfills. J. Environ. Sci. Poll. Res., 3: 160-163.
10. Amirruddin, A.D., F.M. Muharam, T.N. Paing, D.S.K. Singh and M.M. Yusoff, 2017. Nitrogen effects on growth and spectral characteristics of immature and mature oil palms. Asian J. Plant Sci., 16: 200-210.
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11. Tariq, F.S., A.W. Samsuri, D.S. Karam and A.Z. Aris, 2016. Phytoremediation of gold mine tailings amended with iron-coated and uncoated rice husk ash by vetiver grass (Vetiveria zizanioides (Linn.) Nash). Appl. Environ. Soil Sci., 10.1155/2016/4151898.
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12. Rajoo, K.S., D.S. Karam, A. Arifin and F.M. Muharam, 2016. Phytoremediation potential of Dipterocarpus chataceus planted on sewage sludge contaminated soil. Middle-East J. Scient. Res., 24: 1169-1177.
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13. Rajoo, K.S., D.S. Karam and A. Ismail, 2016. Phytoremediation of soils contaminated with heavy metals in Malaysia- A Review. Plant Soil. Environ., 16: 1504-1514.
14. Karam, D.S., A. Arifin, K.S. Rajoo, F.M. Muharam, M.R.M. Kasim and A.R. Hazandy, 2016. Proposed soil quality index for rehabilitated tropical forest sites in Malaysia. Am. J. Applied Sci., 14: 13-24.
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15. Karam, D.S., A. Arifin, K.S. Rajoo, A.S. Jamaluddin and M.R. Karim, 2016. Forest Soils, UPM Press, Malaysia,.
16. Jusop, S., R. Othman, M. Osman, D.S. Karam, M.Y.A. Samad and M.R. Ariffin, 2016. Bauxite Mining in Pengerang. UPM Press, Serdang..
17. Malik, M.N.A., A. Abdu, D.S. Karam, S. Jusop and H.A. Hamid et al., 2015. The fertility status of soils at rehabilitated degraded land in universiti putra malaysia planted with Pinus caribaea and Swietenia macrophylla. Am. J. Appl. Sci., 12: 752-758.
18. Karam, D.S., M.N.C. Jamil, N. Jaafar, K.S. Rajoo and A. Arifin, 2015. Effects of different incubation periods on microbial biomass carbon (MBC) in two soil series. J. Environ. Sci. Pollut. Res., 1: 20-22.
19. Mohd-Aizat, A., M.K. Mohamad-Roslan, W.N.A. Sulaiman and D.S. Karam, 2014. The relationship between soil pH and selected soil properties in 48 years logged-over forest. Int. J. Environ. Sci., 4: 1129-1140.
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20. Karam, D.S., A. Abdu, R. Othman, S. Jusop and A.H.M. Hanif, 2014. Impact of enrichment planting activity on soil physico-chemical properties of degraded forestland. Int. J. Environ. Sci., 5: 407-422.
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21. Abdu, A. and D.S. Karam, 2014. Forest Soil. In: Introductory Forest Science, Ratnasingam, J., L.F. See and F.H. Ibrahim (Eds.)., UPM Press, Serdang.
22. Singh, K.S.D., A. Arifin, O. Radziah, J. Shamshuddin, A.H. Hazandy and N.M. Majid, 2013. Status of soil microbial population, enzymatic activity and biomass of selected natural, secondary and rehabilitated forests. Am. J. Environ. Sci., 4: 301-309.
23. Rajoo, K.S., A. Abdu, H. Abdul-Hamid, D.S. Karam, S. Jusop, A.S. Jamaluddin. and W.W. Zhen, 2013. Assessment of heavy metals uptake and translocation by Aquilaria malaccensis planted in soils containing sewage sludge. Am. J. Appl. Sci., 10: 952-964.
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24. Rajoo, K.S., A. Abdu, D.K. Singh, H. Abdul-Hamid, S. Jusop and W.W. Zhen, 2013. Heavy metal uptake and translocation by Dipterocarpus verrucosus from sewage sludge contaminated soil. Am. J. Environ. Sci., 9: 259-268.
25. Karam, D.S., A. Arifin, R. Othman, S. Jusop, H. Abdul-Hamid and T. Seema, 2013. Changes in the physico-chemical properties of soils under rehabilitated lowland dipterocarps forest at Chikus Forest Reserve, Perak, Malaysia. J. Macrotrend Appl. Sci., 1: 42-57.
26. Karam, D.S., A. Arifin, O. Radziah, J. Shamshuddin and A. Hamid et al., 2013. Evaluation of soil biological properties of 9- and 15-year-old stands in the oil palm plantation in Perak, Malaysia. Afr. J. Agric., 8: 3904-3910.
27. Arifin, A., D.S. Karam, J. Shamshuddin, N.M. Majid, O. Radziah, A.H. Hazandy and I. Zahari, 2012. Proposing a suitable soil quality index for natural, secondary and rehabilitated tropical forests in Malaysia. Afr. J. Biotechnol., 11: 3297-3309.
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28. Singh, D.K., F. Abood, H. Abdul-Hamid, Z. Ashaari and A. Abdu, 2011. Boric acid toxicity trials on the wood borer Heterobostrychus aequalis waterhouse (Coleoptera: Bostrychidae). Am. J. Agric. Biol. Sci., 6: 84-91.
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29. Karam, D.S., A. Arifin, O. Radziah, J. Shamshuddin and N.M. Majid et al., 2011. Impact of long-term forest enrichment planting on the biological status of soil in a deforested dipterocarp forest in perak, Malaysia. Sci. World J., 10.1100/2012/641346.
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30. Karam, D.S., A. Abdu, O. Radziah, J. Shamshuddin and H. Abdul-Hamid et al., 2011. Assessing soil biological properties of natural and planted forests in the Malaysian tropical lowland dipterocarp forests. Am. J. Appl. Sci., 8: 854-859.
31. Abdu, A., N. Aderis, H. Abdul-Hamid, N.M. Majid, S. Jusop, D.S. Karam and K. Ahmad, 2011. Using Orthosiphon stamineus B. for phytoremediation of heavy metals in soils amended with sewage sludge. Am. J. Appl. Sci., 8: 323-331.
32. Ahmadpour, P., A.M. Nawi, A. Abdu, H. Abdul-Hamid and D.K. Singh et al., 2010. Uptake of heavy metals by Jatropha curcas L. planted in soils containing sewage sludge. Am. J. Applied Sci., 7: 1291-1299.