Separation of algae from detritus for stable isotope or ecological stoichiometry studies using density fractionation in colloidal silica

By S. Hamilton, S. Sippel, Stuart E. Bunn. 2005

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The ecology of freshwater epipelic algae: an update (2008, background): “…benthic algal experts; although, no published work has directly assessed this problem, and although separation of algae and detritus is possible (Hamilton et al. 2005), no single standard separation method is available that accurately removes the problem of contamination of the epipelic…”
Does nutrient enrichment decouple algal–bacterial production in periphyton? (2008, methodology): “Epilithon in these tubes was separated from inorganic material by centrifugation in colloidal Si using the method of Hamilton et al. (2005).”
Comparison of methods to determine algal δ13C in freshwater (2008, background): “Despite promising efforts to develop new techniques that refine isotopic signatures of particular groups of organisms (Boschker and Middelburg 2002, Pel et al. 2004, Hamilton et al. 2005, Pond et al. 2006), the majority of studies still rely on indirect methods to infer algal signatures.”
Stable isotope and fatty acid tracers in energy and nutrient studies of jellyfish: a review (2008, background): “Hamilton et al. (2005) showed that in many cases, water or sediment samples can be centrifuged in a silica gel to separate microalgae from sediment and detrital matter.”