Little bluestem litter dynamics in Minnesota old fields

John J Pastor, M. A. Stillwell, David Tilman

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

We studied the decay and nitrogen dynamics of little bluestem (Schizachyrium scoparium) litter in fertilized and unfertilized Minnesota old fields, using the litterbag technique. Annual decay rates and nitrogen leaching losses during the first month of decay were highly correlated with N content of litter and not with fertilizer additions. After the first month of decay, nitrogen was immobilized for at least 18 months. In contrast to decay rates and early N leaching losses, these immobilization rates were correlated with the amount of ammonium nitrate added in fertilizer rather than with initial %N. Therefore, litter quality and exogenous nitrogen supply appear to have different and independent effects on decay rates and N dynamics of little bluestem litter.

Original languageEnglish (US)
Pages (from-to)327-330
Number of pages4
JournalOecologia
Volume72
Issue number3
DOIs
StatePublished - Jun 1 1987

Keywords

  • Decomposition
  • Fertilization
  • Nitrogen
  • Schizachyrium scoparium

Fingerprint Dive into the research topics of 'Little bluestem litter dynamics in Minnesota old fields'. Together they form a unique fingerprint.

Cite this