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Quantifying interspecific coagulation efficiency of phytoplankton
Hansen, J.L.S.; Kiørboe, T. (1997). Quantifying interspecific coagulation efficiency of phytoplankton. Mar. Ecol. Prog. Ser. 159: 75-79
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599, more
Peer reviewed article  

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Keywords
    Aquatic communities > Plankton > Phytoplankton
    Chemical reactions > Coagulation
    Organism aggregations
    Particulates > Suspended particulate matter
    Ditylum brightwellii (T.West) Grunow, 1885 [WoRMS]; Skeletonema costatum (Greville) Cleve, 1873 [WoRMS]; Thalassiosira nordenskioeldii Cleve, 1873 [WoRMS]
    Marine/Coastal

Authors  Top 
  • Hansen, J.L.S.
  • Kiørboe, T., more

Abstract
    Non-sticky latex beads and sticky diatoms were used as models to describe mutual coagulation between sticky and non-sticky particles. In mixed suspensions of beads and Thalassiosira nordenskjoeldii, both types of particles coagulated into mixed aggregates at specific rates, from which the interspecific coagulation efficiency could be calculated. Stickiness between beads and T. nordenskjoeldii was 50% of that of T. nordenskjoeldii in monospecific suspensions, and this ratio remained constant throughout 12 experiments covering 1 order of magnitude variation in the stickiness level of T. nordenskjoeldii. Mutual coagulation between Skeletonema costatum and the non-sticky cells of Ditylum brightwellii also proceeded with half the efficiency of S. costatum alone. The latex beads were suitable to be used as 'standard particles' to quantify the ability of phytoplankton to prime aggregation of suspended particles.

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