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Effects of eutrophication on diatom abundance, biovolume and diversity in tropical coastal waters
Lim, J.H.; Lee, C.W. (2017). Effects of eutrophication on diatom abundance, biovolume and diversity in tropical coastal waters. Environ. Monit. Assess. 189(9): 189-432.
In: Environmental Monitoring and Assessment. Kluwer: Dordrecht. ISSN 0167-6369; e-ISSN 1573-2959, more
Peer reviewed article  

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Author keywords
    Diatom abundance; Diatom community; Diatom biovolume; Tropical waters

Authors  Top 
  • Lim, J.H.
  • Lee, C.W.

    Diatom abundance, biovolume and diversity were measured over a 2-year period along the Straits of Malacca at two stations with upper (Klang) and lower (Port Dickson) states of eutrophication. Diatom abundance, which ranged from 0.2 × 104 to 21.7 × 104 cells L−1 at Klang and 0.9 × 103– 41.3 × 103 cells L−1 at Port Dickson, was influenced partly by nutrient concentrations. At Klang, the diatoms were generally smaller and less diverse (H′ = 0.77 ± 0.48) and predominated by spp. (60 ± 32% of total diatom biomass). In contrast, diatoms were larger and more diverse (H′ = 1.40 ± 0.67) at Port Dickson. Chaetoceros spp. were the most abundant diatoms at Port Dickson but attributed only 48 ± 30% of total diatom biomass. Comparison of both Klang and Port Dickson showed that their diatom community structure differed and that eutrophication reduced diatom diversity at Klang. We also observed how Si(OH)4 affected the abundance of Skeletonema spp. which in turn influenced the temporal variation of diatom community at Klang. Our results highlighted how eutrophication affects diatom diversity and community structure.

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