
author
1862–1950
A German zoologist and botanist, he helped turn plankton research into a more exact science through field studies, sampling methods, and careful observation. His work connected lakes, seas, and the tiny drifting life that sustains them.

by C. (Carl Heinrich) Apstein, Friedrich Borcherding, Stephan Clessin, Paul Kramer, E. Schmidt-Schwedt, Arthur Seligo, Friedrich Zschokke
Born in Stettin on September 19, 1862, Carl Heinrich Apstein studied at the University of Kiel and earned his doctorate in 1889. He first worked in zoology, then became especially known for research on plankton in both freshwater and marine environments.
Much of his scientific career centered on measuring and classifying the small organisms drifting through the water. He worked with the Zoological Institute in Kiel, took part in marine research expeditions, and wrote on topics ranging from zooplankton to algae, making him an important early figure in planktology.
Apstein died in Berlin in 1950. Remembered as a wide-ranging natural scientist, he is associated with the growth of modern aquatic biology at a time when the hidden life of lakes and oceans was only beginning to be studied in detail.