The method for separating shells from other mineral matter has been well
known for many years. This method is primarily based on the fact that
empty shells are filled with air and therefore float on the water
surface, whereas other mineral matter sinks. However, in mires, this
method is not optimal. In such environments, empty shells become filled
with water, causing both empty shells and living animals to sink during
the wet sieving process. The present method is designed based on this
principle.
Horsák M., 2003: How to sample mollusc communities in mires easily [Jak
jednodušeji vzorkovat prameništní malakocenózy]. – Malacologica
Bohemoslovaca, 2: 11–14.
Publication date: 10. 7. 2003.