The vegetation of wet meadows in relation to their land-use

Susan M. Galatowitsch, Diane C. Whited, Richard Lehtinen, Jason Husveth, Karen Schik

Research output: Contribution to journalArticlepeer-review

109 Scopus citations

Abstract

Wetland biomonitoring approaches are needed to determine when changes in response to stressors are occurring and to predict the consequences of proposed land-use changes. These approaches require an understanding of shifts in biota that occur in response to land-use, data that are lacking for most kinds of wetlands. Changes in floristic composition corresponding to land-use differences at multiple scales (site to 2500 m radius) were characterized for 40 wet meadows associated with prairie glacial marshes in Minnesota (U.S.A.). In general, guild was more useful than species composition for indicating land-use impacts. Site impacts (stormwater, cultivation) and landscape disturbance (agriculture and urbanization, combined), coincide with a reduction in native graminoid and herbaceous perennial abundance (e.g., Carex lasiocarpa, Calamagrostis canadensis, Spartina pectinata). This vegetation is replaced with annuals (e.g, Bidens cernua, Polygonum pensylvanicum) in recently cultivated sites or introduced perennials (e.g., Phalaris arundinacea, Typha angustifolia) and floating aquatics (lemnids) in stormwater impacted wetlands. Ditches also reduce native perennial importance and increase perennials, but only when they are in highly impacted landscapes.

Original languageEnglish (US)
Pages (from-to)121-144
Number of pages24
JournalEnvironmental Monitoring and Assessment
Volume60
Issue number2
DOIs
StatePublished - 2000

Keywords

  • Impact assessment
  • Land-use impacts
  • Minnesota
  • Wet meadows
  • Wetland vegetation

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