Effects of urbanization on plant species diversity in central Arizona

Jason S. Walker, Nancy Grimm, John M. Briggs, Corinna Gries, Laura Dugan

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Modern urban development provides an excellent laboratory for examining the interplay among socioecological relationships. We analyzed how the rapidly urbanizing Phoenix, Arizona metropolis has affected plant species diversity and community composition at a regional scale. Species diversity and plant density probably result from abiotic sorting in undeveloped desert sites, but not in urban sites. We found that species richness at the plot scale was higher for desert as opposed to urban sites; however, the estimated total species pool in the urban ecosystem is higher than that in the desert, as a result of the increased importation of introduced species through the nursery trade. Ordination of plant communities suggests three unique groupings of species based on land-use type of the site (desert, urban, and agriculture) and two unique groupings of urban sites based on landscaping aesthetics (mesic or xeric). We therefore recognize both bottom-up and top-down controls of plant biodiversity within the urban ecosystem.

Original languageEnglish (US)
Pages (from-to)465-470
Number of pages6
JournalFrontiers in Ecology and the Environment
Volume7
Issue number9
DOIs
StatePublished - Nov 2009

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urbanization
deserts
species diversity
urban site
desert
urban ecosystem
top-down control
landscaping
species pool
urban development
ecosystems
aesthetics
introduced species
esthetics
plant density
ordination
sorting
community composition
plant community
plant communities

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology

Cite this

Effects of urbanization on plant species diversity in central Arizona. / Walker, Jason S.; Grimm, Nancy; Briggs, John M.; Gries, Corinna; Dugan, Laura.

In: Frontiers in Ecology and the Environment, Vol. 7, No. 9, 11.2009, p. 465-470.

Research output: Contribution to journalArticle

Walker, Jason S. ; Grimm, Nancy ; Briggs, John M. ; Gries, Corinna ; Dugan, Laura. / Effects of urbanization on plant species diversity in central Arizona. In: Frontiers in Ecology and the Environment. 2009 ; Vol. 7, No. 9. pp. 465-470.
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