Research Note: Alignment of elongated Nassella pulchra plants with hill-slope contours

Jeffrey S. Fehmi, Michele Hammond, James W. Bartolome

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

On 10 sloped grassland sites, 175 Nassella pulchra plants were randomly selected and their basal geometry measured. Plants were not circular (p < 0.001) with an average elongation of 30.3% + 20.7 and 89% of the plants had greater than 10% elongation. Sixty-six percent of the plants had the elongation oriented along the contours. Elongation was correlated with slope steepness (p = 0.003, r2 = 0.06), but unrelated to the angle the long axis was deflected from the slope fall line (p = 0.21, r2 = 0.02). This elongation and orientation potentially reduced overland flow compared to circular plants.

Original languageEnglish (US)
Pages (from-to)212-215
Number of pages4
JournalArid Land Research and Management
Volume22
Issue number3
DOIs
StatePublished - Jul 1 2008

Keywords

  • California annual grassland
  • Hydrology
  • Model assumptions

ASJC Scopus subject areas

  • Soil Science

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