Emergence and survival of bromus setifolius seedlings in different microsites of a patagonian arid steppe

A. Soriano, Osvaldo Sala

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

In a plant community of the arid steppe, structurally characterized by shrubs encircled by grasses and scattered tussocks with bare soil patches interspersed, the hypothesis of differential seedling survival in differentially protected microsites was tested. Seeds of Bromus setifolius were placed in the soil at two different depths and in two different microhabitats: leeward of a shrub and bare soil patch. No changes were recorded in the germination rate treatments. However, seadling survival under shrub protection was lower than in bare soil patches. Higher soil water potential in bare soil patches - probably due to smaller root biomass of established grasses - appeared to be the major determinant of the higher survival rate observed. A model based on seed density and seedling survival is proposed for seedling recruitment in relation to distance from the mother plant. The promotion of seedling establishment in the best suited microhabitats is visualized as a possible means of enhancing recovery of vegetation.

Original languageEnglish (US)
Pages (from-to)91-100
Number of pages10
JournalIsrael Journal of Botany
Volume35
Issue number2
DOIs
StatePublished - Jan 1 1986
Externally publishedYes

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Bromus
bare soil
steppes
steppe
seedling
shrub
seedlings
microhabitat
shrubs
soil
microhabitats
grass
seed
soil water potential
seedling establishment
grasses
plant community
germination
seeds
plant communities

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science
  • Ecology, Evolution, Behavior and Systematics

Cite this

Emergence and survival of bromus setifolius seedlings in different microsites of a patagonian arid steppe. / Soriano, A.; Sala, Osvaldo.

In: Israel Journal of Botany, Vol. 35, No. 2, 01.01.1986, p. 91-100.

Research output: Contribution to journalArticle

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