Diatom Analysis: Categories

Diatoms were present to a depth of 300 cm, the divison between pollen zones 8 and 9. Pollen zone 9 contained grey clay. There were 167 diatom species identified. 28 diatom species were categorized into groups for which conditions they could stand.
1. Eurtopic: Can tolerate a wide range of environmental conditions.
2. Halophilous: Tolerant to low salinity.
3. Eutrophic: Indicating increased production of the lake.
4. Alkaliphilous: Indicating alkaline waters.