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Percent contribution of diatom species in surface sediments, size fraction > ...
preserved in surface sediments (0-1 cm) -
Quarternary diatom abundance of sediment core CRP-1 (Table 2)
Numbers represent occurence in a count of 300 valves. <1 = whole specimens observed in sample but not recorded in initial count of 300 valves. <0.1 = identifiable...