Relation of Cladoceran Remains in Lake Sediments to Primary Productivity of Lakes

Abstract

Cladoceran microfossil remains from the surficial sediments of 19 Danish and 14 Indiana lakes were analyzed quantitatively. An attempt was made to correlate the numbers of remains with C 1 4 primary productivity measurements by previous authors. The Spearman rank correlation method gave no correlation for lakes in different drainage basins. It is suggested that under special circumstances there may be a correlation when only lakes of the same drainage basin are considered.