Floristic response to urbanization

Filtering of the bioregional flora in Indianapolis, Indiana, Usa

Rebecca W. Dolan, Myla Aronson, Andrew L. Hipp

Research output: Contribution to journalArticle

Abstract

Premise of the Study: Globally, urban plant populations are becoming increasingly important, as these plants play a vital role in ameliorating effects of ecosystem disturbance and climate change. Urban environments act as filters to bioregional flora, presenting survival challenges to spontaneous plants. Yet, because of the paucity of inventory data on plants in landscapes both before and after urbanization, few studies have directly investigated this effect of urbanization. Methods: We used historical, contemporary, and regional plant species inventories for Indianapolis, Indiana USA to evaluate how urbanization filters the bioregional flora based on species diversity, functional traits, and phylogenetic community structure. Key results: Approximately 60% of the current regional flora was represented in the Indianapolis flora, both historically and presently. Native species that survived over time were significantly different in growth form, life form, and dispersal and pollination modes than those that were extirpated. Phylogenetically, the historical flora represented a random sample of the regional flora, while the current urban flora represented a nonrandom sample. Both grami-noid habit and abiotic pollination are significantly more phylogenetically conserved than expected. Conclusions: Our results likely reflect the shift from agricultural cover to built environment, coupled with the influence of human preference, in shaping the current urban flora of Indianapolis. Based on our analyses, the urban environment of Indianapolis does filter the bioregional species pool. To the extent that these filters are shared by other cities and operate similarly, we may see increasingly homogenized urban floras across regions, with concurrent loss of evolutionary information.

Original languageEnglish (US)
Pages (from-to)1179-1187
Number of pages9
JournalAmerican Journal of Botany
Volume104
Issue number8
DOIs
StatePublished - Jan 1 2017

Fingerprint

Urbanization
urbanization
floristics
flora
Pollination
filter
Equipment and Supplies
Urban Population
Climate Change
pollination
Habits
Ecosystem
species inventory
species pool
growth form
Survival
ornamental plants
native species
Growth
species diversity

All Science Journal Classification (ASJC) codes

  • Genetics
  • Ecology, Evolution, Behavior and Systematics
  • Plant Science

Keywords

  • Phylogenetic diversity
  • Phylogenetic structure
  • Plant functional traits
  • Urban flora

Cite this

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title = "Floristic response to urbanization: Filtering of the bioregional flora in Indianapolis, Indiana, Usa",
abstract = "Premise of the Study: Globally, urban plant populations are becoming increasingly important, as these plants play a vital role in ameliorating effects of ecosystem disturbance and climate change. Urban environments act as filters to bioregional flora, presenting survival challenges to spontaneous plants. Yet, because of the paucity of inventory data on plants in landscapes both before and after urbanization, few studies have directly investigated this effect of urbanization. Methods: We used historical, contemporary, and regional plant species inventories for Indianapolis, Indiana USA to evaluate how urbanization filters the bioregional flora based on species diversity, functional traits, and phylogenetic community structure. Key results: Approximately 60{\%} of the current regional flora was represented in the Indianapolis flora, both historically and presently. Native species that survived over time were significantly different in growth form, life form, and dispersal and pollination modes than those that were extirpated. Phylogenetically, the historical flora represented a random sample of the regional flora, while the current urban flora represented a nonrandom sample. Both grami-noid habit and abiotic pollination are significantly more phylogenetically conserved than expected. Conclusions: Our results likely reflect the shift from agricultural cover to built environment, coupled with the influence of human preference, in shaping the current urban flora of Indianapolis. Based on our analyses, the urban environment of Indianapolis does filter the bioregional species pool. To the extent that these filters are shared by other cities and operate similarly, we may see increasingly homogenized urban floras across regions, with concurrent loss of evolutionary information.",
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Floristic response to urbanization : Filtering of the bioregional flora in Indianapolis, Indiana, Usa. / Dolan, Rebecca W.; Aronson, Myla; Hipp, Andrew L.

In: American Journal of Botany, Vol. 104, No. 8, 01.01.2017, p. 1179-1187.

Research output: Contribution to journalArticle

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