Phytoplankton nutrient deficiency as related to atmospheric nitrogen deposition in northern Minnesota acid-sensitive lakes

R. P. Axler, C. R. Rose, C. A. Tikkanen

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

Four acid-sensitive lakes were studied. N enrichment generally caused a greater biomass response than P, although N + P almost always yielded the greatest effect and co-limitation was likely in two of the lakes. Predictions based on DlN:TP ratios generally agreed with the growth bioassays; TN:TP and DlN:SRP were not useful and could be misleading. Atmospheric deposition could satisfy most of the daily algal N demand and increase the fertility of these lakes. Results suggest that although water quality protection based solely on P may not protect against this non-point source of nutrients, without these control strategies, P inputs would be expected to have a disproportionately greater stimulation of phytoplankton growth. -from Authors

Original languageEnglish (US)
Pages (from-to)1281-1296
Number of pages16
JournalCanadian Journal of Fisheries and Aquatic Sciences
Volume51
Issue number6
DOIs
StatePublished - 1994

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