Nitrogen and phosphorus dynamics in hot desert streams of Southwestern U.S.A.

Nancy Grimm, Stuart G. Fisher, W. L. Minckley

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

Nitrogen to phosphorus ratios and concentrations of nitrate and soluble reactive phosphate are presented for an array of Southwestern streams as evidence that nitrogen is the limiting nutrient where such limitation occurs. Nitrate uptake in sections of intermittent streams was attributable to autotrophic activity. Uptake of soluble reactive phosphate was unrelated to any indicator of autotrophic activity, thus concentrations of this nutrient in desert and semi-desert stream waters may be controlled by other factors.

Original languageEnglish (US)
Pages (from-to)303-312
Number of pages10
JournalHydrobiologia
Volume83
Issue number2
DOIs
StatePublished - Sep 1 1981

Keywords

  • Arizona
  • deserts
  • nitrogen
  • nutrient limitation
  • phosphorus
  • production
  • streams

ASJC Scopus subject areas

  • Aquatic Science

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