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• Abdullah, Mohamed I; Fredriksen, Stein & Christie, Hartvig (2017). The impact of the kelp (Laminaria hyperborea) forest on the organic matter content in sediment of the west coast of Norway. Marine Biology Research. ISSN 1745-1000. 13(2), p. 151–160. doi: 10.1080/17451000.2016.1240369.
• Abdullah, Mohamed I & Fredriksen, Stein (2014). The exudation of nitrate by the kelp Laminaria hyperborea, an observation during in situ incubation experiments. Marine Biology Research. ISSN 1745-1000. 10(7), p. 725–730. doi: 10.1080/17451000.2013.850514.
• Coleman, Heather M.; Abdullah, Mohamed I; Eggins, Brian R. & Palmer, Fiona L. (2005). Photocatalytic degradation of 17 beta-oestradiol, oestriol and 17 alpha-ethynyloestradiol in water monitored using fluorescence spectroscopy. Applied Catalysis B: Environmental. ISSN 0926-3373. 55, p. 23–30.
• Abdullah, Mohamed I & Fredriksen, Stein (2004). Production, respiration, and exudation of dissolved organic matter by the kelp Laminaria hyperborea along the west coast of Norway. Journal of the Marine Biological Association of the United Kingdom. ISSN 0025-3154. 84, p. 887–894.

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• Pinturier-Geiss, Laurence; Dale, Barrie; Abdullah, Mohamed I & Karlsen, Dag Arild (2000). Lipid composition and cultural eutrophication in the oslofjord (Norway). Show summary

  The aim of this work is to evaluate variations in chemical signals extracted from sediments as a mean of tracing out the development of eutrophication, and to compare this with potential parallel variations in the dinocyst assemblages. The lipid fraction of the organic matter was analysed by TLC-FID, GC-FID and GC-MS.Particular attention was given to the polar fraction (phospholipids, glycolipids) and hydrocarbons. The down-core distribution of lipids is strongly correlated with the dinocyst signal.The highest concentrations as well as a marked increase in the HC concentration are observed during the period of intensive eutrophication.The molecular composition of HC and fatty acid methyl esters of the polar fraction enables identification of the predominant source of the Om: bacteria and dinocyst.

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