Ecology. 1971 Jul;52(4):655-659. doi: 10.2307/1934154.
Ecology
J Kalff
PMID: 28973802 DOI: 10.2307/1934154
The relationship between rates of phytoplankton photosynthesis and nutrient and growth factor deficiencies was investigated by the nutrient enrichment bioassay technique in a small tundra pond at Barrow, Alaska, Phosphate, nitrate, and ammonia deficiencies limited photosynthesis after the onset of a period of high sustained growth. Toward the end of this period, additional deficiencies for one or more trace elements and growth factors, with vitamin B
© 1971 by the Ecological Society of America.