Media type: E-Article Title: Environmental Requirements of Fresh-Water Plankton Algae. Experimental Studies in the Ecology of Phytoplankton Contributor: Nielsen, E. Steemann; Rodhe, Wilhelm Published: JSTOR, 1949 Published in: Oikos, 1 (1949) 1, Seite 153 Language: Not determined DOI: 10.2307/3565053 ISSN: 0030-1299 Keywords: Ecology, Evolution, Behavior and Systematics Origination: Footnote: